rust/integral-geometry/src/lib.rs
author alfadur
Tue, 04 Jun 2019 23:19:18 +0300
changeset 15140 901751d3cd80
parent 15046 dc4a12a84c92
child 15203 decb2f1c682b
permissions -rw-r--r--
make custom combinators high order
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use fpnum::{distance, fp, FPNum, FPPoint};
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use std::{
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    cmp::{max, min},
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    ops::{Add, AddAssign, Div, DivAssign, Mul, MulAssign, RangeInclusive, Sub, SubAssign},
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};
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#[derive(PartialEq, Eq, Clone, Copy, Debug)]
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pub struct Point {
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    pub x: i32,
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    pub y: i32,
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}
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impl Point {
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    pub const ZERO: Self = Self::new(0, 0);
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    #[inline]
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    pub const fn new(x: i32, y: i32) -> Self {
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        Self { x, y }
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    }
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    #[inline]
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    pub const fn diag(v: i32) -> Self {
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        Self::new(v, v)
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    }
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    #[inline]
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    pub fn signum(self) -> Self {
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        Self::new(self.x.signum(), self.y.signum())
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    }
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    #[inline]
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    pub fn abs(self) -> Self {
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        Self::new(self.x.abs(), self.y.abs())
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    }
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    #[inline]
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    pub const fn dot(self, other: Point) -> i32 {
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        self.x * other.x + self.y * other.y
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    }
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    #[inline]
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    pub fn max_norm(self) -> i32 {
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        std::cmp::max(self.x.abs(), self.y.abs())
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    }
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    #[inline]
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    pub fn integral_norm(self) -> u32 {
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        distance(self.x, self.y).abs_round()
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    }
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    #[inline]
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    pub const fn transform(self, matrix: &[i32; 4]) -> Self {
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        Point::new(
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            matrix[0] * self.x + matrix[1] * self.y,
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            matrix[2] * self.x + matrix[3] * self.y,
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        )
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    }
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    #[inline]
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    pub const fn rotate90(self) -> Self {
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        Point::new(self.y, -self.x)
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    }
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    #[inline]
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    pub const fn cross(self, other: Point) -> i32 {
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        self.dot(other.rotate90())
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    }
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    #[inline]
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    pub fn clamp(self, rect: &Rect) -> Point {
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        Point::new(rect.x_range().clamp(self.x), rect.y_range().clamp(self.y))
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    }
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    #[inline]
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    pub const fn line_to(self, end: Point) -> Line {
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        Line::new(self, end)
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    }
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    #[inline]
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    pub const fn ray_with_dir(self, direction: Point) -> Ray {
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        Ray::new(self, direction)
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    }
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    #[inline]
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    pub const fn tangent_mul(self, x: i32) -> i32 {
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        x * self.y / self.x
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    }
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    #[inline]
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    pub const fn cotangent_mul(self, y: i32) -> i32 {
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        y * self.x / self.y
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    }
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    #[inline]
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    pub fn to_fppoint(self) -> FPPoint {
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        FPPoint::new(self.x.into(), self.y.into())
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    }
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    #[inline]
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    pub fn from_fppoint(p: &FPPoint) -> Self {
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        Self::new(p.x().round(), p.y().round())
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    }
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}
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#[derive(PartialEq, Eq, Clone, Copy, Debug)]
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pub struct Size {
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    pub width: usize,
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    pub height: usize,
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}
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impl Size {
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    pub const EMPTY: Self = Self::square(0);
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    #[inline]
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    pub const fn new(width: usize, height: usize) -> Self {
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        Self { width, height }
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    }
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    #[inline]
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    pub const fn square(size: usize) -> Self {
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        Self {
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            width: size,
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            height: size,
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        }
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    }
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    #[inline]
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    pub const fn area(&self) -> usize {
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        self.width * self.height
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    }
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    #[inline]
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    pub const fn linear_index(&self, x: usize, y: usize) -> usize {
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        y * self.width + x
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    }
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    #[inline]
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    pub fn is_power_of_two(&self) -> bool {
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        self.width.is_power_of_two() && self.height.is_power_of_two()
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    }
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    #[inline]
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    pub fn next_power_of_two(&self) -> Self {
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        Self {
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            width: self.width.next_power_of_two(),
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            height: self.height.next_power_of_two(),
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        }
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    }
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    #[inline]
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    pub const fn transpose(&self) -> Self {
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        Self::new(self.height, self.width)
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    }
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    #[inline]
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    pub fn to_mask(&self) -> SizeMask {
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        SizeMask::new(*self)
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    }
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    #[inline]
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    pub fn to_square(&self) -> Self {
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        Self::square(max(self.width, self.height))
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    }
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    pub fn to_grid_index(&self) -> GridIndex {
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        GridIndex::new(*self)
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    }
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    #[inline]
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    pub fn contains(&self, other: Self) -> bool {
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        self.width >= other.width && self.height >= other.height
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    }
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}
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#[derive(PartialEq, Eq, Clone, Copy, Debug)]
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pub struct SizeMask {
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    size: Size,
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}
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impl SizeMask {
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    #[inline]
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    pub fn new(size: Size) -> Self {
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        debug_assert!(size.is_power_of_two());
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        let size = Size {
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            width: !(size.width - 1),
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            height: !(size.height - 1),
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        };
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        Self { size }
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    }
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    #[inline]
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    pub fn contains_x<T: Into<usize>>(&self, x: T) -> bool {
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        (self.size.width & x.into()) == 0
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    }
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    #[inline]
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    pub fn contains_y<T: Into<usize>>(&self, y: T) -> bool {
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        (self.size.height & y.into()) == 0
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    }
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    #[inline]
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    pub fn contains(&self, point: Point) -> bool {
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        self.contains_x(point.x as usize) && self.contains_y(point.y as usize)
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    }
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}
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pub struct GridIndex {
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    shift: Point,
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}
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impl GridIndex {
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    pub fn new(size: Size) -> Self {
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        assert!(size.is_power_of_two());
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        let shift = Point::new(
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            size.width.trailing_zeros() as i32,
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            size.height.trailing_zeros() as i32,
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        );
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        Self { shift }
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    }
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    pub fn map(&self, position: Point) -> Point {
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        Point::new(position.x >> self.shift.x, position.y >> self.shift.y)
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    }
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}
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macro_rules! bin_op_impl {
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    ($op: ty, $name: tt) => {
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        impl $op for Point {
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            type Output = Self;
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            #[inline]
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            fn $name(self, rhs: Self) -> Self::Output {
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                Self::new(self.x.$name(rhs.x), self.y.$name(rhs.y))
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            }
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        }
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    };
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}
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macro_rules! scalar_bin_op_impl {
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    ($($op: tt)::+, $name: tt) => {
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        impl $($op)::+<i32> for Point {
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            type Output = Self;
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            #[inline]
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            fn $name(self, rhs: i32) -> Self::Output {
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                Self::new(self.x.$name(rhs), self.y.$name(rhs))
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            }
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        }
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    };
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}
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macro_rules! bin_assign_op_impl {
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    ($op: ty, $name: tt) => {
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        impl $op for Point {
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            #[inline]
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            fn $name(&mut self, rhs: Self) {
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                self.x.$name(rhs.x);
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                self.y.$name(rhs.y);
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            }
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        }
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    };
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}
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macro_rules! fp_scalar_bin_op_impl {
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    ($($op: tt)::+, $name: tt) => {
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        impl $($op)::+<FPNum> for Point {
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            type Output = FPPoint;
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            #[inline]
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            fn $name(self, rhs: FPNum) -> Self::Output {
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                FPPoint::new(rhs.$name(self.x), rhs.$name(self.y))
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            }
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        }
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    };
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}
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macro_rules! left_fp_scalar_bin_op_impl {
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    ($($op: tt)::+, $name: tt) => {
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        impl $($op)::+<Point> for FPNum {
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            type Output = FPPoint;
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            #[inline]
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            fn $name(self, rhs: Point) -> Self::Output {
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                FPPoint::new(self.$name(rhs.x), self.$name(rhs.y))
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            }
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        }
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    };
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}
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bin_op_impl!(Add, add);
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bin_op_impl!(Sub, sub);
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bin_op_impl!(Mul, mul);
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bin_op_impl!(Div, div);
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scalar_bin_op_impl!(Mul, mul);
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scalar_bin_op_impl!(Div, div);
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fp_scalar_bin_op_impl!(Mul, mul);
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fp_scalar_bin_op_impl!(Div, div);
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left_fp_scalar_bin_op_impl!(Mul, mul);
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left_fp_scalar_bin_op_impl!(Div, div);
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bin_assign_op_impl!(AddAssign, add_assign);
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bin_assign_op_impl!(SubAssign, sub_assign);
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bin_assign_op_impl!(MulAssign, mul_assign);
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bin_assign_op_impl!(DivAssign, div_assign);
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#[derive(PartialEq, Eq, Clone, Copy, Debug)]
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pub struct Rect {
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    top_left: Point,
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    bottom_right: Point,
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}
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impl Rect {
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    pub const EMPTY: Self = Self {
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        top_left: Point::ZERO,
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        bottom_right: Point::diag(-1),
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    };
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    #[inline]
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    pub fn new(top_left: Point, bottom_right: Point) -> Self {
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        debug_assert!(top_left.x <= bottom_right.x + 1);
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        debug_assert!(top_left.y <= bottom_right.y + 1);
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        Self {
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            top_left,
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            bottom_right,
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        }
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    }
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    pub fn from_box(left: i32, right: i32, top: i32, bottom: i32) -> Self {
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        Self::new(Point::new(left, top), Point::new(right, bottom))
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    }
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    pub fn from_size(top_left: Point, size: Size) -> Self {
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        Self::new(
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   333
            top_left,
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            top_left + Point::new(size.width as i32 - 1, size.height as i32 - 1),
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        )
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   336
    }
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   337
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    pub fn from_size_coords(x: i32, y: i32, width: usize, height: usize) -> Self {
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        Self::from_size(Point::new(x, y), Size::new(width, height))
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   340
    }
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   341
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   342
    pub fn at_origin(size: Size) -> Self {
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   343
        Self::from_size(Point::ZERO, size)
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   344
    }
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   345
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   346
    #[inline]
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   347
    pub const fn width(&self) -> usize {
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   348
        (self.right() - self.left() + 1) as usize
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   349
    }
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   350
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   351
    #[inline]
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   352
    pub const fn height(&self) -> usize {
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   353
        (self.bottom() - self.top() + 1) as usize
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   354
    }
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   355
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   356
    #[inline]
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   357
    pub const fn size(&self) -> Size {
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   358
        Size::new(self.width(), self.height())
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   359
    }
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   360
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   361
    #[inline]
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   362
    pub const fn area(&self) -> usize {
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   363
        self.size().area()
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   364
    }
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   365
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   366
    #[inline]
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   367
    pub const fn left(&self) -> i32 {
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   368
        self.top_left().x
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   369
    }
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   370
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   371
    #[inline]
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   372
    pub const fn top(&self) -> i32 {
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   373
        self.top_left().y
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   374
    }
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   375
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   376
    #[inline]
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   377
    pub const fn right(&self) -> i32 {
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   378
        self.bottom_right().x
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   379
    }
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   380
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   381
    #[inline]
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   382
    pub const fn bottom(&self) -> i32 {
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   383
        self.bottom_right().y
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diff changeset
   384
    }
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   385
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   386
    #[inline]
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2e2b31cf0871 make stuff const
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   387
    pub const fn top_left(&self) -> Point {
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   388
        self.top_left
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diff changeset
   389
    }
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diff changeset
   390
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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   391
    #[inline]
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2e2b31cf0871 make stuff const
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   392
    pub const fn bottom_right(&self) -> Point {
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7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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   393
        self.bottom_right
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diff changeset
   394
    }
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   395
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   396
    #[inline]
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diff changeset
   397
    pub fn center(&self) -> Point {
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diff changeset
   398
        (self.top_left() + self.bottom_right()) / 2
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   399
    }
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   400
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   401
    #[inline]
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   402
    pub fn with_margin(&self, margin: i32) -> Self {
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   403
        let offset = Point::diag(margin);
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3078123e84ea Bezierize land outline
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diff changeset
   404
        Self::new(self.top_left() + offset, self.bottom_right() - offset)
14156
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   405
    }
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   406
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   407
    #[inline]
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   408
    pub fn x_range(&self) -> RangeInclusive<i32> {
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   409
        self.left()..=self.right()
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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parents: 14155
diff changeset
   410
    }
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   411
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   412
    #[inline]
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   413
    pub fn y_range(&self) -> RangeInclusive<i32> {
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   414
        self.top()..=self.bottom()
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
alfadur
parents: 14155
diff changeset
   415
    }
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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parents: 14155
diff changeset
   416
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   417
    #[inline]
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   418
    pub fn contains(&self, point: Point) -> bool {
15046
dc4a12a84c92 remove RangeContains in favor of standard contains
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diff changeset
   419
        self.x_range().contains(&point.x) && self.y_range().contains(&point.y)
14156
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   420
    }
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   421
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   422
    #[inline]
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   423
    pub fn contains_inside(&self, point: Point) -> bool {
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   424
        point.x > self.left()
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
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diff changeset
   425
            && point.x < self.right()
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
alfadur
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diff changeset
   426
            && point.y > self.top()
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
alfadur
parents: 14155
diff changeset
   427
            && point.y < self.bottom()
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
alfadur
parents: 14155
diff changeset
   428
    }
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
alfadur
parents: 14155
diff changeset
   429
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
alfadur
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diff changeset
   430
    #[inline]
14738
16024046d458 rescue the atlas
alfadur
parents: 14648
diff changeset
   431
    pub fn contains_rect(&self, other: &Self) -> bool {
16024046d458 rescue the atlas
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parents: 14648
diff changeset
   432
        self.contains(other.top_left()) && self.contains(other.bottom_right())
16024046d458 rescue the atlas
alfadur
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diff changeset
   433
    }
16024046d458 rescue the atlas
alfadur
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diff changeset
   434
16024046d458 rescue the atlas
alfadur
parents: 14648
diff changeset
   435
    #[inline]
14158
3119d665d3c6 collapse rectangle types back together with consistent usage of size
alfadur
parents: 14156
diff changeset
   436
    pub fn intersects(&self, other: &Rect) -> bool {
14747
75ff5c643004 actually atlas tests were also broken
alfadur
parents: 14746
diff changeset
   437
        self.left() <= other.right()
14156
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
alfadur
parents: 14155
diff changeset
   438
            && self.right() >= other.left()
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
alfadur
parents: 14155
diff changeset
   439
            && self.top() <= other.bottom()
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
alfadur
parents: 14155
diff changeset
   440
            && self.bottom() >= other.top()
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
alfadur
parents: 14155
diff changeset
   441
    }
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
alfadur
parents: 14155
diff changeset
   442
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
alfadur
parents: 14155
diff changeset
   443
    #[inline]
14158
3119d665d3c6 collapse rectangle types back together with consistent usage of size
alfadur
parents: 14156
diff changeset
   444
    pub fn split_at(&self, point: Point) -> [Rect; 4] {
14156
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
alfadur
parents: 14155
diff changeset
   445
        assert!(self.contains_inside(point));
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
alfadur
parents: 14155
diff changeset
   446
        [
14158
3119d665d3c6 collapse rectangle types back together with consistent usage of size
alfadur
parents: 14156
diff changeset
   447
            Self::from_box(self.left(), point.x, self.top(), point.y),
3119d665d3c6 collapse rectangle types back together with consistent usage of size
alfadur
parents: 14156
diff changeset
   448
            Self::from_box(point.x, self.right(), self.top(), point.y),
3119d665d3c6 collapse rectangle types back together with consistent usage of size
alfadur
parents: 14156
diff changeset
   449
            Self::from_box(point.x, self.right(), point.y, self.bottom()),
3119d665d3c6 collapse rectangle types back together with consistent usage of size
alfadur
parents: 14156
diff changeset
   450
            Self::from_box(self.left(), point.x, point.y, self.bottom()),
14156
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
alfadur
parents: 14155
diff changeset
   451
        ]
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
alfadur
parents: 14155
diff changeset
   452
    }
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
alfadur
parents: 14155
diff changeset
   453
14158
3119d665d3c6 collapse rectangle types back together with consistent usage of size
alfadur
parents: 14156
diff changeset
   454
    #[inline]
14738
16024046d458 rescue the atlas
alfadur
parents: 14648
diff changeset
   455
    pub fn with_margins(&self, left: i32, right: i32, top: i32, bottom: i32) -> Self {
16024046d458 rescue the atlas
alfadur
parents: 14648
diff changeset
   456
        Self::from_box(
14746
19d30d96d7d6 fix atlas.insert
alfadur
parents: 14738
diff changeset
   457
            self.left() - left,
14738
16024046d458 rescue the atlas
alfadur
parents: 14648
diff changeset
   458
            self.right() + right,
14746
19d30d96d7d6 fix atlas.insert
alfadur
parents: 14738
diff changeset
   459
            self.top() - top,
14738
16024046d458 rescue the atlas
alfadur
parents: 14648
diff changeset
   460
            self.bottom() + bottom,
16024046d458 rescue the atlas
alfadur
parents: 14648
diff changeset
   461
        )
16024046d458 rescue the atlas
alfadur
parents: 14648
diff changeset
   462
    }
16024046d458 rescue the atlas
alfadur
parents: 14648
diff changeset
   463
16024046d458 rescue the atlas
alfadur
parents: 14648
diff changeset
   464
    #[inline]
14158
3119d665d3c6 collapse rectangle types back together with consistent usage of size
alfadur
parents: 14156
diff changeset
   465
    pub fn quotient(self, x: usize, y: usize) -> Point {
14161
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   466
        self.top_left() + Point::new((x % self.width()) as i32, (y % self.height()) as i32)
14156
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
alfadur
parents: 14155
diff changeset
   467
    }
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
alfadur
parents: 14155
diff changeset
   468
}
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
alfadur
parents: 14155
diff changeset
   469
14152
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   470
trait RangeClamp<T> {
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   471
    fn clamp(&self, value: T) -> T;
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   472
}
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   473
14161
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   474
impl<T: Ord + Copy> RangeClamp<T> for RangeInclusive<T> {
14152
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   475
    fn clamp(&self, value: T) -> T {
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   476
        if value < *self.start() {
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   477
            *self.start()
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   478
        } else if value > *self.end() {
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   479
            *self.end()
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   480
        } else {
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   481
            value
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   482
        }
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   483
    }
14072
8a0d69c16cad Implement OutlinePoints for land generators, some ground work for template based landgen
unc0rr
parents: 13971
diff changeset
   484
}
8a0d69c16cad Implement OutlinePoints for land generators, some ground work for template based landgen
unc0rr
parents: 13971
diff changeset
   485
14115
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   486
pub struct Polygon {
14146
376a0551b00a - Add distance-divider option to land_dump
unc0rr
parents: 14145
diff changeset
   487
    vertices: Vec<Point>,
14115
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   488
}
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   489
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   490
impl Polygon {
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   491
    pub fn new(vertices: &[Point]) -> Self {
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   492
        let mut v = Vec::with_capacity(vertices.len() + 1);
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   493
        v.extend_from_slice(vertices);
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   494
        if !v.is_empty() {
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   495
            let start = v[0];
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   496
            v.push(start);
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   497
        }
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   498
        Self { vertices: v }
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   499
    }
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   500
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   501
    pub fn edges_count(&self) -> usize {
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   502
        self.vertices.len() - 1
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   503
    }
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   504
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   505
    pub fn get_edge(&self, index: usize) -> Line {
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   506
        Line::new(self.vertices[index], self.vertices[index + 1])
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   507
    }
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   508
14145
6e0be42d0a8f polygonize OutlinePoints
alfadur
parents: 14133
diff changeset
   509
    pub fn split_edge(&mut self, edge_index: usize, vertex: Point) {
6e0be42d0a8f polygonize OutlinePoints
alfadur
parents: 14133
diff changeset
   510
        self.vertices.insert(edge_index + 1, vertex);
6e0be42d0a8f polygonize OutlinePoints
alfadur
parents: 14133
diff changeset
   511
    }
6e0be42d0a8f polygonize OutlinePoints
alfadur
parents: 14133
diff changeset
   512
6e0be42d0a8f polygonize OutlinePoints
alfadur
parents: 14133
diff changeset
   513
    pub fn iter<'a>(&'a self) -> impl Iterator<Item = &Point> + 'a {
6e0be42d0a8f polygonize OutlinePoints
alfadur
parents: 14133
diff changeset
   514
        (&self.vertices[..self.edges_count()]).iter()
6e0be42d0a8f polygonize OutlinePoints
alfadur
parents: 14133
diff changeset
   515
    }
6e0be42d0a8f polygonize OutlinePoints
alfadur
parents: 14133
diff changeset
   516
14155
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   517
    pub fn iter_mut<'a>(&'a mut self) -> impl Iterator<Item = &mut Point> + 'a {
14176
8f82d87d223f save edges_count
alfadur
parents: 14173
diff changeset
   518
        let edges_count = self.edges_count();
14155
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   519
        let start = self.vertices.as_mut_ptr();
14176
8f82d87d223f save edges_count
alfadur
parents: 14173
diff changeset
   520
        let end = unsafe { start.add(edges_count) };
14161
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   521
        PolygonPointsIteratorMut {
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   522
            source: self,
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   523
            start,
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   524
            end,
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   525
        }
14115
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   526
    }
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   527
14155
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   528
    fn force_close(&mut self) {
14154
a65b60f36b96 fix polygons getting unclosed on mirroring
alfadur
parents: 14152
diff changeset
   529
        if !self.vertices.is_empty() {
14229
87f1054c2333 fix polygon closure
alfadur
parents: 14228
diff changeset
   530
            let edges_count = self.edges_count();
87f1054c2333 fix polygon closure
alfadur
parents: 14228
diff changeset
   531
            self.vertices[edges_count] = self.vertices[0];
14154
a65b60f36b96 fix polygons getting unclosed on mirroring
alfadur
parents: 14152
diff changeset
   532
        }
a65b60f36b96 fix polygons getting unclosed on mirroring
alfadur
parents: 14152
diff changeset
   533
    }
a65b60f36b96 fix polygons getting unclosed on mirroring
alfadur
parents: 14152
diff changeset
   534
14115
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   535
    pub fn iter_edges<'a>(&'a self) -> impl Iterator<Item = Line> + 'a {
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   536
        (&self.vertices[0..self.edges_count()])
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   537
            .iter()
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   538
            .zip(&self.vertices[1..])
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   539
            .map(|(s, e)| Line::new(*s, *e))
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   540
    }
14161
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   541
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   542
    pub fn bezierize(&mut self, segments_number: u32) {
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   543
        fn calc_point(p1: Point, p2: Point, p3: Point) -> FPPoint {
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   544
            let diff13 = (p1 - p3).to_fppoint();
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   545
            let diff13_norm = diff13.distance();
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   546
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   547
            if diff13_norm.is_zero() {
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   548
                diff13
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   549
            } else {
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   550
                let diff12_norm = (p1 - p2).to_fppoint().distance();
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   551
                let diff23_norm = (p2 - p3).to_fppoint().distance();
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   552
                let min_distance = min(diff13_norm, min(diff12_norm, diff23_norm));
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   553
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   554
                diff13 * min_distance / diff13_norm / 3
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   555
            }
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   556
        }
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   557
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   558
        if self.vertices.len() < 4 {
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   559
            return;
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   560
        }
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   561
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   562
        let delta = fp!(1 / segments_number);
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   563
        let mut bezierized_vertices = Vec::new();
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   564
        let mut pi = 0;
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   565
        let mut i = 1;
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   566
        let mut ni = 2;
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   567
        let mut right_point = calc_point(self.vertices[pi], self.vertices[i], self.vertices[ni]);
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   568
        let mut left_point;
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   569
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   570
        pi += 1;
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   571
        while pi != 0 {
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   572
            pi = i;
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   573
            i = ni;
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   574
            ni += 1;
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   575
            if ni >= self.vertices.len() {
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   576
                ni = 0;
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   577
            }
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   578
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   579
            left_point = right_point;
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   580
            right_point = calc_point(self.vertices[pi], self.vertices[i], self.vertices[ni]);
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   581
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   582
            bezierized_vertices.extend(BezierCurveSegments::new(
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   583
                Line::new(self.vertices[pi], self.vertices[i]),
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   584
                left_point,
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   585
                -right_point,
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   586
                delta,
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   587
            ));
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   588
        }
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   589
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   590
        self.vertices = bezierized_vertices;
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   591
    }
14115
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   592
}
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   593
14155
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   594
struct PolygonPointsIteratorMut<'a> {
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   595
    source: &'a mut Polygon,
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   596
    start: *mut Point,
14161
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   597
    end: *mut Point,
14155
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   598
}
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   599
14161
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   600
impl<'a> Iterator for PolygonPointsIteratorMut<'a> {
14155
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   601
    type Item = &'a mut Point;
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   602
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   603
    fn next(&mut self) -> Option<<Self as Iterator>::Item> {
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   604
        if self.start == self.end {
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   605
            None
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   606
        } else {
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   607
            unsafe {
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   608
                let result = &mut *self.start;
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   609
                self.start = self.start.add(1);
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   610
                Some(result)
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   611
            }
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   612
        }
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   613
    }
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   614
}
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   615
14161
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   616
impl<'a> Drop for PolygonPointsIteratorMut<'a> {
14155
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   617
    fn drop(&mut self) {
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   618
        self.source.force_close();
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   619
    }
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   620
}
09f62bb046ef actually there is a way to preserve mutable polygon iterator
alfadur
parents: 14154
diff changeset
   621
14115
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   622
impl From<Vec<Point>> for Polygon {
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   623
    fn from(mut v: Vec<Point>) -> Self {
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   624
        if !v.is_empty() && v[0] != v[v.len() - 1] {
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   625
            let start = v[0];
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   626
            v.push(start)
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   627
        }
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   628
        Self { vertices: v }
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   629
    }
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   630
}
d0b0d61b7d5e add polygons
alfadur
parents: 14113
diff changeset
   631
14097
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   632
#[derive(PartialEq, Eq, Clone, Copy, Debug)]
14152
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   633
pub struct Ray {
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   634
    pub start: Point,
14161
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   635
    pub direction: Point,
14152
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   636
}
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   637
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   638
impl Ray {
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   639
    #[inline]
14648
2e2b31cf0871 make stuff const
alfadur
parents: 14229
diff changeset
   640
    pub const fn new(start: Point, direction: Point) -> Ray {
14152
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   641
        Self { start, direction }
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   642
    }
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   643
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   644
    #[inline]
14648
2e2b31cf0871 make stuff const
alfadur
parents: 14229
diff changeset
   645
    pub const fn tangent_mul(&self, x: i32) -> i32 {
14163
11202097584f fix tangents
alfadur
parents: 14162
diff changeset
   646
        self.direction.tangent_mul(x)
14152
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   647
    }
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   648
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   649
    #[inline]
14648
2e2b31cf0871 make stuff const
alfadur
parents: 14229
diff changeset
   650
    pub const fn cotangent_mul(&self, y: i32) -> i32 {
14163
11202097584f fix tangents
alfadur
parents: 14162
diff changeset
   651
        self.direction.cotangent_mul(y)
14152
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   652
    }
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   653
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   654
    #[inline]
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   655
    pub fn orientation(&self, point: Point) -> i32 {
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   656
        (point - self.start).cross(self.direction).signum()
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   657
    }
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   658
}
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   659
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   660
#[derive(PartialEq, Eq, Clone, Copy, Debug)]
14097
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   661
pub struct Line {
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   662
    pub start: Point,
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   663
    pub end: Point,
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   664
}
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   665
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   666
impl Line {
14648
2e2b31cf0871 make stuff const
alfadur
parents: 14229
diff changeset
   667
    pub const ZERO: Self = Self::new(Point::ZERO, Point::ZERO);
14097
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   668
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   669
    #[inline]
14648
2e2b31cf0871 make stuff const
alfadur
parents: 14229
diff changeset
   670
    pub const fn new(start: Point, end: Point) -> Self {
2e2b31cf0871 make stuff const
alfadur
parents: 14229
diff changeset
   671
        Self { start, end }
14097
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   672
    }
14098
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   673
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   674
    #[inline]
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   675
    pub fn center(&self) -> Point {
14109
f483f844da98 component-wise division is actually useful sometimes
alfadur
parents: 14102
diff changeset
   676
        (self.start + self.end) / 2
14098
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   677
    }
14127
5c1ce63114a5 a bit of simplification
alfadur
parents: 14117
diff changeset
   678
5c1ce63114a5 a bit of simplification
alfadur
parents: 14117
diff changeset
   679
    #[inline]
14152
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   680
    pub fn scaled_direction(&self) -> Point {
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   681
        self.end - self.start
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   682
    }
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   683
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   684
    #[inline]
14127
5c1ce63114a5 a bit of simplification
alfadur
parents: 14117
diff changeset
   685
    pub fn scaled_normal(&self) -> Point {
14152
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   686
        self.scaled_direction().rotate90()
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   687
    }
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   688
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   689
    #[inline]
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   690
    pub fn to_ray(&self) -> Ray {
c416d32764b7 organize landgen a bit more
alfadur
parents: 14147
diff changeset
   691
        Ray::new(self.start, self.scaled_direction())
14127
5c1ce63114a5 a bit of simplification
alfadur
parents: 14117
diff changeset
   692
    }
14097
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   693
}
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   694
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   695
impl IntoIterator for Line {
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   696
    type Item = Point;
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   697
    type IntoIter = LinePoints;
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   698
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   699
    fn into_iter(self) -> Self::IntoIter {
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   700
        LinePoints::new(self)
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   701
    }
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   702
}
14072
8a0d69c16cad Implement OutlinePoints for land generators, some ground work for template based landgen
unc0rr
parents: 13971
diff changeset
   703
13956
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   704
pub struct LinePoints {
13959
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   705
    accumulator: Point,
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   706
    direction: Point,
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   707
    sign: Point,
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   708
    current: Point,
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   709
    total_steps: i32,
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   710
    step: i32,
13956
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   711
}
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   712
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   713
impl LinePoints {
14097
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   714
    pub fn new(line: Line) -> Self {
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   715
        let dir = line.end - line.start;
13956
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   716
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   717
        Self {
14648
2e2b31cf0871 make stuff const
alfadur
parents: 14229
diff changeset
   718
            accumulator: Point::ZERO,
13959
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   719
            direction: dir.abs(),
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   720
            sign: dir.signum(),
14097
e5904ead4864 Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents: 14080
diff changeset
   721
            current: line.start,
13959
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   722
            total_steps: dir.max_norm(),
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   723
            step: 0,
13956
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   724
        }
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   725
    }
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   726
}
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   727
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   728
impl Iterator for LinePoints {
13959
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   729
    type Item = Point;
13956
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   730
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   731
    fn next(&mut self) -> Option<Self::Item> {
13959
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   732
        if self.step <= self.total_steps {
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   733
            self.accumulator += self.direction;
13956
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   734
13959
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   735
            if self.accumulator.x > self.total_steps {
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   736
                self.accumulator.x -= self.total_steps;
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   737
                self.current.x += self.sign.x;
13956
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   738
            }
13959
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   739
            if self.accumulator.y > self.total_steps {
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   740
                self.accumulator.y -= self.total_steps;
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   741
                self.current.y += self.sign.y;
13956
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   742
            }
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   743
13959
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   744
            self.step += 1;
13956
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   745
13959
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   746
            Some(self.current)
13956
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   747
        } else {
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   748
            None
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   749
        }
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   750
    }
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   751
}
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   752
13962
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   753
pub struct ArcPoints {
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   754
    point: Point,
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   755
    step: i32,
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   756
}
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   757
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   758
impl ArcPoints {
14648
2e2b31cf0871 make stuff const
alfadur
parents: 14229
diff changeset
   759
    pub const fn new(radius: i32) -> Self {
13962
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   760
        Self {
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   761
            point: Point::new(0, radius),
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   762
            step: 3 - 2 * radius,
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   763
        }
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   764
    }
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   765
}
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   766
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   767
impl Iterator for ArcPoints {
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   768
    type Item = Point;
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   769
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   770
    fn next(&mut self) -> Option<Self::Item> {
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   771
        if self.point.x < self.point.y {
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   772
            let result = self.point;
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   773
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   774
            if self.step < 0 {
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   775
                self.step += self.point.x * 4 + 6;
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   776
            } else {
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   777
                self.step += (self.point.x - self.point.y) * 4 + 10;
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   778
                self.point.y -= 1;
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   779
            }
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   780
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   781
            self.point.x += 1;
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   782
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   783
            Some(result)
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   784
        } else if self.point.x == self.point.y {
13968
85645992bc8a Fix ArcPoints never finishing
unc0rr
parents: 13964
diff changeset
   785
            self.point.x += 1;
13971
48796bef9e69 Add --protocol option to engine
unc0rr
parents: 13968
diff changeset
   786
13962
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   787
            Some(self.point)
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   788
        } else {
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   789
            None
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   790
        }
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   791
    }
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   792
}
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   793
13963
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   794
pub struct EquidistantPoints {
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   795
    vector: Point,
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   796
    iteration: u8,
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   797
}
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   798
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   799
impl EquidistantPoints {
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   800
    pub fn new(vector: Point) -> Self {
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   801
        Self {
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   802
            vector,
13964
a325ed57ebfe Don't generate unnecessary duplication in case of equal coordinates
unc0rr
parents: 13963
diff changeset
   803
            iteration: if vector.x == vector.y { 4 } else { 8 },
13963
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   804
        }
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   805
    }
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   806
}
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   807
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   808
impl Iterator for EquidistantPoints {
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   809
    type Item = Point;
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   810
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   811
    fn next(&mut self) -> Option<Self::Item> {
13964
a325ed57ebfe Don't generate unnecessary duplication in case of equal coordinates
unc0rr
parents: 13963
diff changeset
   812
        if self.iteration > 0 {
13963
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   813
            self.vector.x = -self.vector.x;
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   814
            if self.iteration & 1 == 0 {
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   815
                self.vector.y = -self.vector.y;
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   816
            }
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   817
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   818
            if self.iteration == 4 {
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   819
                std::mem::swap(&mut self.vector.x, &mut self.vector.y);
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   820
            }
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   821
13964
a325ed57ebfe Don't generate unnecessary duplication in case of equal coordinates
unc0rr
parents: 13963
diff changeset
   822
            self.iteration -= 1;
13963
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   823
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   824
            Some(self.vector)
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   825
        } else {
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   826
            None
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   827
        }
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   828
    }
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   829
}
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   830
14160
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   831
pub struct BezierCurveSegments {
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   832
    segment: Line,
14167
4791c9a7d5e8 add more point operators
alfadur
parents: 14165
diff changeset
   833
    control_point1: FPPoint,
4791c9a7d5e8 add more point operators
alfadur
parents: 14165
diff changeset
   834
    control_point2: FPPoint,
14160
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   835
    offset: FPNum,
14161
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   836
    max_offset: FPNum,
14160
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   837
    delta: FPNum,
14161
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   838
    have_finished: bool,
14160
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   839
}
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   840
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   841
impl BezierCurveSegments {
14161
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   842
    pub fn new(segment: Line, p1: FPPoint, p2: FPPoint, delta: FPNum) -> Self {
14160
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   843
        Self {
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   844
            segment,
14167
4791c9a7d5e8 add more point operators
alfadur
parents: 14165
diff changeset
   845
            control_point1: segment.start.to_fppoint() - p1,
4791c9a7d5e8 add more point operators
alfadur
parents: 14165
diff changeset
   846
            control_point2: segment.end.to_fppoint() - p2,
14160
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   847
            offset: fp!(0),
14161
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   848
            max_offset: fp!(4095 / 4096),
14160
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   849
            delta,
14161
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   850
            have_finished: false,
14160
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   851
        }
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   852
    }
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   853
}
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   854
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   855
impl Iterator for BezierCurveSegments {
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   856
    type Item = Point;
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   857
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   858
    fn next(&mut self) -> Option<Self::Item> {
14161
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   859
        if self.offset < self.max_offset {
14160
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   860
            let offset_sq = self.offset * self.offset;
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   861
            let offset_cub = offset_sq * self.offset;
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   862
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   863
            let r1 = fp!(1) - self.offset * 3 + offset_sq * 3 - offset_cub;
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   864
            let r2 = self.offset * 3 - offset_sq * 6 + offset_cub * 3;
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   865
            let r3 = offset_sq * 3 - offset_cub * 3;
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   866
14167
4791c9a7d5e8 add more point operators
alfadur
parents: 14165
diff changeset
   867
            let p = r1 * self.segment.start
4791c9a7d5e8 add more point operators
alfadur
parents: 14165
diff changeset
   868
                + r2 * self.control_point1
4791c9a7d5e8 add more point operators
alfadur
parents: 14165
diff changeset
   869
                + r3 * self.control_point2
4791c9a7d5e8 add more point operators
alfadur
parents: 14165
diff changeset
   870
                + offset_cub * self.segment.end;
14160
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   871
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   872
            self.offset += self.delta;
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   873
14167
4791c9a7d5e8 add more point operators
alfadur
parents: 14165
diff changeset
   874
            Some(Point::from_fppoint(&p))
14161
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   875
        } else if !self.have_finished {
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   876
            self.have_finished = true;
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   877
3078123e84ea Bezierize land outline
unc0rr
parents: 14160
diff changeset
   878
            Some(self.segment.end)
14160
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   879
        } else {
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   880
            None
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   881
        }
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   882
    }
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   883
}
37c99587825d Implement BeizerCurveSegments, no tests
unc0rr
parents: 14158
diff changeset
   884
13956
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   885
#[cfg(test)]
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   886
mod tests {
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   887
    use super::*;
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   888
13959
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   889
    fn get_points(coords: &[(i32, i32)]) -> Vec<Point> {
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   890
        coords.iter().map(|(x, y)| Point::new(*x, *y)).collect()
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   891
    }
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   892
13956
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   893
    #[test]
13963
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   894
    fn line_basic() {
14098
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   895
        let line: Vec<Point> = Line::new(Point::new(0, 0), Point::new(3, 3))
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   896
            .into_iter()
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   897
            .collect();
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   898
        let v = get_points(&[(0, 0), (1, 1), (2, 2), (3, 3)]);
13956
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   899
14098
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   900
        assert_eq!(line, v);
13959
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   901
    }
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   902
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   903
    #[test]
13963
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   904
    fn line_skewed() {
14098
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   905
        let line: Vec<Point> = Line::new(Point::new(0, 0), Point::new(5, -7))
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   906
            .into_iter()
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   907
            .collect();
13962
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   908
        let v = get_points(&[
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   909
            (0, 0),
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   910
            (1, -1),
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   911
            (2, -2),
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   912
            (2, -3),
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   913
            (3, -4),
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   914
            (4, -5),
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   915
            (4, -6),
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   916
            (5, -7),
3f69a70063a5 Implement ArcPoints iterator for circles
unc0rr
parents: 13959
diff changeset
   917
        ]);
13959
1fa905aa4cdb move point struct into integral-geometry and use it to refactor a bit
alfadur
parents: 13958
diff changeset
   918
14098
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   919
        assert_eq!(line, v);
13956
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   920
    }
13963
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   921
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   922
    #[test]
13964
a325ed57ebfe Don't generate unnecessary duplication in case of equal coordinates
unc0rr
parents: 13963
diff changeset
   923
    fn equidistant_full() {
14098
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   924
        let n: Vec<Point> = EquidistantPoints::new(Point::new(1, 3)).collect();
13963
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   925
        let v = get_points(&[
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   926
            (-1, -3),
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   927
            (1, -3),
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   928
            (-1, 3),
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   929
            (1, 3),
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   930
            (-3, -1),
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   931
            (3, -1),
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   932
            (-3, 1),
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   933
            (3, 1),
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   934
        ]);
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   935
14098
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   936
        assert_eq!(n, v);
13963
7e7a03e85ac4 Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents: 13962
diff changeset
   937
    }
13964
a325ed57ebfe Don't generate unnecessary duplication in case of equal coordinates
unc0rr
parents: 13963
diff changeset
   938
a325ed57ebfe Don't generate unnecessary duplication in case of equal coordinates
unc0rr
parents: 13963
diff changeset
   939
    #[test]
a325ed57ebfe Don't generate unnecessary duplication in case of equal coordinates
unc0rr
parents: 13963
diff changeset
   940
    fn equidistant_half() {
14098
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   941
        let n: Vec<Point> = EquidistantPoints::new(Point::new(2, 2)).collect();
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   942
        let v = get_points(&[(-2, -2), (2, -2), (-2, 2), (2, 2)]);
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   943
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   944
        assert_eq!(n, v);
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   945
    }
13964
a325ed57ebfe Don't generate unnecessary duplication in case of equal coordinates
unc0rr
parents: 13963
diff changeset
   946
14098
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   947
    #[test]
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   948
    fn line() {
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   949
        let l = Line::new(Point::new(1, 1), Point::new(5, 6));
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   950
5ade484f3351 Refactor tests, add fn center() for Line
unC0Rr
parents: 14097
diff changeset
   951
        assert_eq!(l.center(), Point::new(3, 3));
13964
a325ed57ebfe Don't generate unnecessary duplication in case of equal coordinates
unc0rr
parents: 13963
diff changeset
   952
    }
14099
bf40b5f938b0 - Add methods to work with Rect as box
unC0Rr
parents: 14098
diff changeset
   953
bf40b5f938b0 - Add methods to work with Rect as box
unC0Rr
parents: 14098
diff changeset
   954
    #[test]
bf40b5f938b0 - Add methods to work with Rect as box
unC0Rr
parents: 14098
diff changeset
   955
    fn rect() {
14158
3119d665d3c6 collapse rectangle types back together with consistent usage of size
alfadur
parents: 14156
diff changeset
   956
        let r = Rect::from_box(10, 100, 0, 70);
14099
bf40b5f938b0 - Add methods to work with Rect as box
unC0Rr
parents: 14098
diff changeset
   957
14102
5d42204ac35e Start convertion of FindPoint()
unC0Rr
parents: 14099
diff changeset
   958
        assert!(r.contains_inside(Point::new(99, 69)));
5d42204ac35e Start convertion of FindPoint()
unC0Rr
parents: 14099
diff changeset
   959
        assert!(!r.contains_inside(Point::new(100, 70)));
5d42204ac35e Start convertion of FindPoint()
unC0Rr
parents: 14099
diff changeset
   960
14099
bf40b5f938b0 - Add methods to work with Rect as box
unC0Rr
parents: 14098
diff changeset
   961
        assert_eq!(r.top_left(), Point::new(10, 0));
14158
3119d665d3c6 collapse rectangle types back together with consistent usage of size
alfadur
parents: 14156
diff changeset
   962
        assert_eq!(r.with_margin(12), Rect::from_box(22, 88, 12, 58));
14099
bf40b5f938b0 - Add methods to work with Rect as box
unC0Rr
parents: 14098
diff changeset
   963
    }
14146
376a0551b00a - Add distance-divider option to land_dump
unc0rr
parents: 14145
diff changeset
   964
376a0551b00a - Add distance-divider option to land_dump
unc0rr
parents: 14145
diff changeset
   965
    #[test]
376a0551b00a - Add distance-divider option to land_dump
unc0rr
parents: 14145
diff changeset
   966
    fn fit() {
14158
3119d665d3c6 collapse rectangle types back together with consistent usage of size
alfadur
parents: 14156
diff changeset
   967
        let r = Rect::from_box(10, 100, 0, 70);
14146
376a0551b00a - Add distance-divider option to land_dump
unc0rr
parents: 14145
diff changeset
   968
14156
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
alfadur
parents: 14155
diff changeset
   969
        assert_eq!(Point::new(0, -10).clamp(&r), Point::new(10, 0));
7f5a591e1c43 separate rectangle types based on right/bottom edge inclusivity
alfadur
parents: 14155
diff changeset
   970
        assert_eq!(Point::new(1000, 1000).clamp(&r), Point::new(100, 70));
14146
376a0551b00a - Add distance-divider option to land_dump
unc0rr
parents: 14145
diff changeset
   971
    }
13956
75eaf7c71789 Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff changeset
   972
}