author | unC0Rr |
Wed, 28 Aug 2024 15:34:49 +0200 | |
branch | transitional_engine |
changeset 16051 | 2003b466b279 |
parent 15948 | 9bd828451d77 |
parent 16010 | 5ba4d3a0c3eb |
child 16056 | d4675c190fa5 |
permissions | -rw-r--r-- |
15235 | 1 |
use fpnum::{fp, integral_sqrt, 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 const fn signum(self) -> Self { |
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Self::new(self.x.signum(), self.y.signum()) |
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} |
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|
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#[inline] |
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pub const 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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let sqr = (self.x as u64).wrapping_pow(2) + (self.y as u64).wrapping_pow(2); |
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integral_sqrt(sqr) as u32 |
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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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Self::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) -> Self { |
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Self::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 const 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 const fn as_power_of_two(&self) -> Option<PotSize> { |
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PotSize::new(self.width, self.height) |
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} |
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#[inline] |
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pub const fn next_power_of_two(&self) -> PotSize { |
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PotSize::new_impl( |
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self.width.next_power_of_two(), |
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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_square(&self) -> Self { |
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Self::square(max(self.width, self.height)) |
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} |
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#[inline] |
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pub fn is_square(&self) -> bool { |
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self.width == self.height |
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} |
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#[inline] |
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pub const 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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#[inline] |
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pub fn join(&self, other: Self) -> Self { |
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Self::new(max(self.width, other.width), max(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 PotSize { |
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size: Size, |
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} |
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impl PotSize { |
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188 |
#[inline] |
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const fn new_impl(width: usize, height: usize) -> Self { |
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190 |
debug_assert!(width.is_power_of_two() && height.is_power_of_two()); |
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Self { |
15850 | 192 |
size: Size::new(width, height), |
193 |
} |
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} |
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#[inline] |
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pub const fn new(width: usize, height: usize) -> Option<Self> { |
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if width.is_power_of_two() && height.is_power_of_two() { |
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199 |
Some(Self::new_impl(width, height)) |
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} else { |
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201 |
None |
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} |
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} |
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pub const fn size(&self) -> Size { |
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self.size |
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} |
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209 |
pub const fn width(&self) -> usize { |
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210 |
self.size.width |
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} |
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pub const fn height(&self) -> usize { |
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self.size.height |
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} |
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#[inline] |
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218 |
pub const fn square(size: usize) -> Option<Self> { |
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219 |
if size.is_power_of_two() { |
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220 |
Some(Self::new_impl(size, size)) |
|
221 |
} else { |
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222 |
None |
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15307 | 223 |
} |
224 |
} |
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#[inline] |
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227 |
pub const fn area(&self) -> usize { |
|
228 |
self.size.area() |
|
229 |
} |
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||
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#[inline] |
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232 |
pub const fn linear_index(&self, x: usize, y: usize) -> usize { |
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233 |
self.size.linear_index(x, y) |
|
234 |
} |
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#[inline] |
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237 |
pub const fn transpose(&self) -> Self { |
|
238 |
Self::new_impl(self.height(), self.width()) |
|
239 |
} |
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240 |
||
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#[inline] |
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242 |
pub fn to_square(&self) -> Self { |
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243 |
let size = max(self.width(), self.height()); |
|
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Self::new_impl(size, size) |
|
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} |
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#[inline] |
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248 |
pub const fn to_mask(&self) -> SizeMask { |
|
249 |
SizeMask::new(*self) |
|
250 |
} |
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251 |
||
252 |
pub const fn to_grid_index(&self) -> GridIndex { |
|
253 |
GridIndex::new(*self) |
|
254 |
} |
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255 |
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256 |
#[inline] |
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257 |
pub const fn contains(&self, other: Self) -> bool { |
|
258 |
self.size.contains(other.size) |
|
259 |
} |
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||
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#[inline] |
|
262 |
pub fn join(&self, other: Self) -> Self { |
|
263 |
Self::new_impl( |
|
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max(self.width(), other.width()), |
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max(self.height(), other.height()), |
|
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) |
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} |
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14053 | 268 |
} |
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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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|
275 |
impl SizeMask { |
|
276 |
#[inline] |
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15850 | 277 |
pub const fn new(size: PotSize) -> Self { |
278 |
Self { |
|
279 |
size: Size::new(!(size.width() - 1), !(size.height() - 1)), |
|
280 |
} |
|
14053 | 281 |
} |
282 |
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283 |
#[inline] |
|
284 |
pub fn contains_x<T: Into<usize>>(&self, x: T) -> bool { |
|
285 |
(self.size.width & x.into()) == 0 |
|
286 |
} |
|
287 |
||
288 |
#[inline] |
|
289 |
pub fn contains_y<T: Into<usize>>(&self, y: T) -> bool { |
|
290 |
(self.size.height & y.into()) == 0 |
|
291 |
} |
|
292 |
||
293 |
#[inline] |
|
294 |
pub fn contains(&self, point: Point) -> bool { |
|
295 |
self.contains_x(point.x as usize) && self.contains_y(point.y as usize) |
|
296 |
} |
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15850 | 297 |
|
298 |
#[inline] |
|
299 |
pub const fn to_size(&self) -> PotSize { |
|
300 |
PotSize::new_impl(!self.size.width + 1, !self.size.height + 1) |
|
301 |
} |
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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 { |
15850 | 309 |
pub const fn new(size: PotSize) -> Self { |
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310 |
let shift = Point::new( |
15850 | 311 |
size.width().trailing_zeros() as i32, |
312 |
size.height().trailing_zeros() as i32, |
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); |
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Self { shift } |
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} |
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|
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|
317 |
pub const fn map(&self, position: Point) -> Point { |
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Introduce OutlineSegmentsIterator, some refactoring
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|
318 |
Point::new(position.x >> self.shift.x, position.y >> self.shift.y) |
14080
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|
319 |
} |
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|
320 |
} |
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|
321 |
|
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|
322 |
macro_rules! bin_op_impl { |
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|
323 |
($op: ty, $name: tt) => { |
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|
324 |
impl $op for Point { |
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|
325 |
type Output = Self; |
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|
326 |
|
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|
327 |
#[inline] |
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|
328 |
fn $name(self, rhs: Self) -> Self::Output { |
13962 | 329 |
Self::new(self.x.$name(rhs.x), self.y.$name(rhs.y)) |
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|
330 |
} |
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|
331 |
} |
13962 | 332 |
}; |
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|
333 |
} |
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|
334 |
|
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|
335 |
macro_rules! scalar_bin_op_impl { |
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|
336 |
($($op: tt)::+, $name: tt) => { |
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|
337 |
impl $($op)::+<i32> for Point { |
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|
338 |
type Output = Self; |
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|
339 |
|
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|
340 |
#[inline] |
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|
341 |
fn $name(self, rhs: i32) -> Self::Output { |
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|
342 |
Self::new(self.x.$name(rhs), self.y.$name(rhs)) |
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|
343 |
} |
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|
344 |
} |
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|
345 |
}; |
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|
346 |
} |
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|
347 |
|
13959
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|
348 |
macro_rules! bin_assign_op_impl { |
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|
349 |
($op: ty, $name: tt) => { |
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|
350 |
impl $op for Point { |
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|
351 |
#[inline] |
13962 | 352 |
fn $name(&mut self, rhs: Self) { |
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|
353 |
self.x.$name(rhs.x); |
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|
354 |
self.y.$name(rhs.y); |
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|
355 |
} |
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|
356 |
} |
13962 | 357 |
}; |
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|
358 |
} |
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|
359 |
|
14167 | 360 |
macro_rules! fp_scalar_bin_op_impl { |
361 |
($($op: tt)::+, $name: tt) => { |
|
362 |
impl $($op)::+<FPNum> for Point { |
|
363 |
type Output = FPPoint; |
|
364 |
||
365 |
#[inline] |
|
366 |
fn $name(self, rhs: FPNum) -> Self::Output { |
|
367 |
FPPoint::new(rhs.$name(self.x), rhs.$name(self.y)) |
|
368 |
} |
|
369 |
} |
|
370 |
}; |
|
371 |
} |
|
372 |
||
373 |
macro_rules! left_fp_scalar_bin_op_impl { |
|
374 |
($($op: tt)::+, $name: tt) => { |
|
375 |
impl $($op)::+<Point> for FPNum { |
|
376 |
type Output = FPPoint; |
|
377 |
||
378 |
#[inline] |
|
379 |
fn $name(self, rhs: Point) -> Self::Output { |
|
380 |
FPPoint::new(self.$name(rhs.x), self.$name(rhs.y)) |
|
381 |
} |
|
382 |
} |
|
383 |
}; |
|
384 |
} |
|
385 |
||
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|
386 |
bin_op_impl!(Add, add); |
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|
387 |
bin_op_impl!(Sub, sub); |
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|
388 |
bin_op_impl!(Mul, mul); |
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|
389 |
bin_op_impl!(Div, div); |
14109
f483f844da98
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|
390 |
scalar_bin_op_impl!(Mul, mul); |
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|
391 |
scalar_bin_op_impl!(Div, div); |
14167 | 392 |
fp_scalar_bin_op_impl!(Mul, mul); |
393 |
fp_scalar_bin_op_impl!(Div, div); |
|
394 |
left_fp_scalar_bin_op_impl!(Mul, mul); |
|
395 |
left_fp_scalar_bin_op_impl!(Div, div); |
|
13959
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|
396 |
bin_assign_op_impl!(AddAssign, add_assign); |
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|
397 |
bin_assign_op_impl!(SubAssign, sub_assign); |
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|
398 |
bin_assign_op_impl!(MulAssign, mul_assign); |
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changeset
|
399 |
bin_assign_op_impl!(DivAssign, div_assign); |
13956
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
400 |
|
14072
8a0d69c16cad
Implement OutlinePoints for land generators, some ground work for template based landgen
unc0rr
parents:
13971
diff
changeset
|
401 |
#[derive(PartialEq, Eq, Clone, Copy, Debug)] |
8a0d69c16cad
Implement OutlinePoints for land generators, some ground work for template based landgen
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|
402 |
pub struct Rect { |
14158
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|
403 |
top_left: Point, |
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|
404 |
bottom_right: Point, |
14072
8a0d69c16cad
Implement OutlinePoints for land generators, some ground work for template based landgen
unc0rr
parents:
13971
diff
changeset
|
405 |
} |
8a0d69c16cad
Implement OutlinePoints for land generators, some ground work for template based landgen
unc0rr
parents:
13971
diff
changeset
|
406 |
|
8a0d69c16cad
Implement OutlinePoints for land generators, some ground work for template based landgen
unc0rr
parents:
13971
diff
changeset
|
407 |
impl Rect { |
14738 | 408 |
pub const EMPTY: Self = Self { |
409 |
top_left: Point::ZERO, |
|
14746 | 410 |
bottom_right: Point::diag(-1), |
14738 | 411 |
}; |
412 |
||
14072
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Implement OutlinePoints for land generators, some ground work for template based landgen
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parents:
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diff
changeset
|
413 |
#[inline] |
15850 | 414 |
pub const fn new(top_left: Point, bottom_right: Point) -> Self { |
14648 | 415 |
debug_assert!(top_left.x <= bottom_right.x + 1); |
416 |
debug_assert!(top_left.y <= bottom_right.y + 1); |
|
14161 | 417 |
Self { |
418 |
top_left, |
|
419 |
bottom_right, |
|
420 |
} |
|
14156
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|
421 |
} |
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|
422 |
|
15850 | 423 |
pub const fn from_box(left: i32, right: i32, top: i32, bottom: i32) -> Self { |
14158
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|
424 |
Self::new(Point::new(left, top), Point::new(right, bottom)) |
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|
425 |
} |
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|
426 |
|
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|
427 |
pub fn from_size(top_left: Point, size: Size) -> Self { |
14158
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changeset
|
428 |
Self::new( |
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changeset
|
429 |
top_left, |
14161 | 430 |
top_left + Point::new(size.width as i32 - 1, size.height as i32 - 1), |
14156
7f5a591e1c43
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|
431 |
) |
7f5a591e1c43
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|
432 |
} |
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changeset
|
433 |
|
14158
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|
434 |
pub fn from_size_coords(x: i32, y: i32, width: usize, height: usize) -> Self { |
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|
435 |
Self::from_size(Point::new(x, y), Size::new(width, height)) |
3119d665d3c6
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changeset
|
436 |
} |
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changeset
|
437 |
|
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changeset
|
438 |
pub fn at_origin(size: Size) -> Self { |
14648 | 439 |
Self::from_size(Point::ZERO, size) |
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alfadur
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changeset
|
440 |
} |
7f5a591e1c43
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changeset
|
441 |
|
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
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changeset
|
442 |
#[inline] |
14648 | 443 |
pub const fn width(&self) -> usize { |
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alfadur
parents:
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diff
changeset
|
444 |
(self.right() - self.left() + 1) as usize |
7f5a591e1c43
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alfadur
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diff
changeset
|
445 |
} |
7f5a591e1c43
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changeset
|
446 |
|
7f5a591e1c43
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alfadur
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changeset
|
447 |
#[inline] |
14648 | 448 |
pub const fn height(&self) -> usize { |
14228 | 449 |
(self.bottom() - self.top() + 1) as usize |
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changeset
|
450 |
} |
7f5a591e1c43
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changeset
|
451 |
|
7f5a591e1c43
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changeset
|
452 |
#[inline] |
14648 | 453 |
pub const fn size(&self) -> Size { |
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alfadur
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diff
changeset
|
454 |
Size::new(self.width(), self.height()) |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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diff
changeset
|
455 |
} |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
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changeset
|
456 |
|
7f5a591e1c43
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alfadur
parents:
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changeset
|
457 |
#[inline] |
14648 | 458 |
pub const fn area(&self) -> usize { |
14156
7f5a591e1c43
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alfadur
parents:
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diff
changeset
|
459 |
self.size().area() |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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diff
changeset
|
460 |
} |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
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diff
changeset
|
461 |
|
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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changeset
|
462 |
#[inline] |
14648 | 463 |
pub const fn left(&self) -> i32 { |
14158
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diff
changeset
|
464 |
self.top_left().x |
14156
7f5a591e1c43
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alfadur
parents:
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diff
changeset
|
465 |
} |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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changeset
|
466 |
|
7f5a591e1c43
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alfadur
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changeset
|
467 |
#[inline] |
14648 | 468 |
pub const fn top(&self) -> i32 { |
14158
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alfadur
parents:
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diff
changeset
|
469 |
self.top_left().y |
14156
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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diff
changeset
|
470 |
} |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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diff
changeset
|
471 |
|
7f5a591e1c43
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alfadur
parents:
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changeset
|
472 |
#[inline] |
14648 | 473 |
pub const fn right(&self) -> i32 { |
14158
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changeset
|
474 |
self.bottom_right().x |
14156
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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changeset
|
475 |
} |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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changeset
|
476 |
|
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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changeset
|
477 |
#[inline] |
14648 | 478 |
pub const fn bottom(&self) -> i32 { |
14158
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alfadur
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diff
changeset
|
479 |
self.bottom_right().y |
14156
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
14155
diff
changeset
|
480 |
} |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
14155
diff
changeset
|
481 |
|
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
14155
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changeset
|
482 |
#[inline] |
14648 | 483 |
pub const fn top_left(&self) -> Point { |
14156
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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diff
changeset
|
484 |
self.top_left |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
14155
diff
changeset
|
485 |
} |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
14155
diff
changeset
|
486 |
|
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
14155
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changeset
|
487 |
#[inline] |
14648 | 488 |
pub const fn bottom_right(&self) -> Point { |
14156
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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diff
changeset
|
489 |
self.bottom_right |
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separate rectangle types based on right/bottom edge inclusivity
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parents:
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changeset
|
490 |
} |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
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diff
changeset
|
491 |
|
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
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diff
changeset
|
492 |
#[inline] |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
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diff
changeset
|
493 |
pub fn center(&self) -> Point { |
7f5a591e1c43
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alfadur
parents:
14155
diff
changeset
|
494 |
(self.top_left() + self.bottom_right()) / 2 |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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changeset
|
495 |
} |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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changeset
|
496 |
|
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
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changeset
|
497 |
#[inline] |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
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diff
changeset
|
498 |
pub fn with_margin(&self, margin: i32) -> Self { |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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diff
changeset
|
499 |
let offset = Point::diag(margin); |
14161 | 500 |
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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parents:
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changeset
|
501 |
} |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
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changeset
|
502 |
|
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
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diff
changeset
|
503 |
#[inline] |
15773
a4558e2be08c
add more const qualifiers to maintain a semblance of activity
alfadur
parents:
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diff
changeset
|
504 |
pub const fn x_range(&self) -> RangeInclusive<i32> { |
14156
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separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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diff
changeset
|
505 |
self.left()..=self.right() |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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diff
changeset
|
506 |
} |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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changeset
|
507 |
|
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
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parents:
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diff
changeset
|
508 |
#[inline] |
15773
a4558e2be08c
add more const qualifiers to maintain a semblance of activity
alfadur
parents:
15405
diff
changeset
|
509 |
pub const fn y_range(&self) -> RangeInclusive<i32> { |
14156
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
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parents:
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diff
changeset
|
510 |
self.top()..=self.bottom() |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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changeset
|
511 |
} |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
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changeset
|
512 |
|
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
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diff
changeset
|
513 |
#[inline] |
7f5a591e1c43
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alfadur
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|
514 |
pub fn contains(&self, point: Point) -> bool { |
15046
dc4a12a84c92
remove RangeContains in favor of standard contains
alfadur
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diff
changeset
|
515 |
self.x_range().contains(&point.x) && self.y_range().contains(&point.y) |
14156
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separate rectangle types based on right/bottom edge inclusivity
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changeset
|
516 |
} |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
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changeset
|
517 |
|
7f5a591e1c43
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changeset
|
518 |
#[inline] |
15773
a4558e2be08c
add more const qualifiers to maintain a semblance of activity
alfadur
parents:
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diff
changeset
|
519 |
pub const fn contains_inside(&self, point: Point) -> bool { |
14156
7f5a591e1c43
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diff
changeset
|
520 |
point.x > self.left() |
7f5a591e1c43
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parents:
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diff
changeset
|
521 |
&& point.x < self.right() |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
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parents:
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diff
changeset
|
522 |
&& point.y > self.top() |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
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parents:
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diff
changeset
|
523 |
&& point.y < self.bottom() |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
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parents:
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diff
changeset
|
524 |
} |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
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changeset
|
525 |
|
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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changeset
|
526 |
#[inline] |
14738 | 527 |
pub fn contains_rect(&self, other: &Self) -> bool { |
528 |
self.contains(other.top_left()) && self.contains(other.bottom_right()) |
|
529 |
} |
|
530 |
||
531 |
#[inline] |
|
15773
a4558e2be08c
add more const qualifiers to maintain a semblance of activity
alfadur
parents:
15405
diff
changeset
|
532 |
pub const fn intersects(&self, other: &Rect) -> bool { |
14747 | 533 |
self.left() <= other.right() |
14156
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separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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diff
changeset
|
534 |
&& self.right() >= other.left() |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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diff
changeset
|
535 |
&& self.top() <= other.bottom() |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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diff
changeset
|
536 |
&& self.bottom() >= other.top() |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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diff
changeset
|
537 |
} |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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diff
changeset
|
538 |
|
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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diff
changeset
|
539 |
#[inline] |
15850 | 540 |
pub const fn split_at(&self, point: Point) -> [Rect; 4] { |
15773
a4558e2be08c
add more const qualifiers to maintain a semblance of activity
alfadur
parents:
15405
diff
changeset
|
541 |
debug_assert!(self.contains_inside(point)); |
14156
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
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diff
changeset
|
542 |
[ |
14158
3119d665d3c6
collapse rectangle types back together with consistent usage of size
alfadur
parents:
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diff
changeset
|
543 |
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
|
544 |
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
|
545 |
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
|
546 |
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
|
547 |
] |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
14155
diff
changeset
|
548 |
} |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
14155
diff
changeset
|
549 |
|
14158
3119d665d3c6
collapse rectangle types back together with consistent usage of size
alfadur
parents:
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diff
changeset
|
550 |
#[inline] |
15850 | 551 |
pub const fn with_margins(&self, left: i32, right: i32, top: i32, bottom: i32) -> Self { |
14738 | 552 |
Self::from_box( |
14746 | 553 |
self.left() - left, |
14738 | 554 |
self.right() + right, |
14746 | 555 |
self.top() - top, |
14738 | 556 |
self.bottom() + bottom, |
557 |
) |
|
558 |
} |
|
559 |
||
560 |
#[inline] |
|
14158
3119d665d3c6
collapse rectangle types back together with consistent usage of size
alfadur
parents:
14156
diff
changeset
|
561 |
pub fn quotient(self, x: usize, y: usize) -> Point { |
14161 | 562 |
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
|
563 |
} |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
14155
diff
changeset
|
564 |
} |
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
14155
diff
changeset
|
565 |
|
14152 | 566 |
trait RangeClamp<T> { |
567 |
fn clamp(&self, value: T) -> T; |
|
568 |
} |
|
569 |
||
14161 | 570 |
impl<T: Ord + Copy> RangeClamp<T> for RangeInclusive<T> { |
14152 | 571 |
fn clamp(&self, value: T) -> T { |
572 |
if value < *self.start() { |
|
573 |
*self.start() |
|
574 |
} else if value > *self.end() { |
|
575 |
*self.end() |
|
576 |
} else { |
|
577 |
value |
|
578 |
} |
|
579 |
} |
|
14072
8a0d69c16cad
Implement OutlinePoints for land generators, some ground work for template based landgen
unc0rr
parents:
13971
diff
changeset
|
580 |
} |
8a0d69c16cad
Implement OutlinePoints for land generators, some ground work for template based landgen
unc0rr
parents:
13971
diff
changeset
|
581 |
|
14115 | 582 |
pub struct Polygon { |
14146 | 583 |
vertices: Vec<Point>, |
14115 | 584 |
} |
585 |
||
586 |
impl Polygon { |
|
587 |
pub fn new(vertices: &[Point]) -> Self { |
|
588 |
let mut v = Vec::with_capacity(vertices.len() + 1); |
|
589 |
v.extend_from_slice(vertices); |
|
590 |
if !v.is_empty() { |
|
591 |
let start = v[0]; |
|
592 |
v.push(start); |
|
593 |
} |
|
594 |
Self { vertices: v } |
|
595 |
} |
|
596 |
||
597 |
pub fn edges_count(&self) -> usize { |
|
15236 | 598 |
self.vertices.len().saturating_sub(1) |
14115 | 599 |
} |
600 |
||
601 |
pub fn get_edge(&self, index: usize) -> Line { |
|
602 |
Line::new(self.vertices[index], self.vertices[index + 1]) |
|
603 |
} |
|
604 |
||
14145 | 605 |
pub fn split_edge(&mut self, edge_index: usize, vertex: Point) { |
606 |
self.vertices.insert(edge_index + 1, vertex); |
|
607 |
} |
|
608 |
||
609 |
pub fn iter<'a>(&'a self) -> impl Iterator<Item = &Point> + 'a { |
|
610 |
(&self.vertices[..self.edges_count()]).iter() |
|
611 |
} |
|
612 |
||
14155
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
613 |
pub fn iter_mut<'a>(&'a mut self) -> impl Iterator<Item = &mut Point> + 'a { |
14176 | 614 |
let edges_count = self.edges_count(); |
14155
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
615 |
let start = self.vertices.as_mut_ptr(); |
14176 | 616 |
let end = unsafe { start.add(edges_count) }; |
14161 | 617 |
PolygonPointsIteratorMut { |
618 |
source: self, |
|
619 |
start, |
|
620 |
end, |
|
621 |
} |
|
14115 | 622 |
} |
623 |
||
14155
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
624 |
fn force_close(&mut self) { |
14154 | 625 |
if !self.vertices.is_empty() { |
14229 | 626 |
let edges_count = self.edges_count(); |
627 |
self.vertices[edges_count] = self.vertices[0]; |
|
14154 | 628 |
} |
629 |
} |
|
630 |
||
14115 | 631 |
pub fn iter_edges<'a>(&'a self) -> impl Iterator<Item = Line> + 'a { |
632 |
(&self.vertices[0..self.edges_count()]) |
|
633 |
.iter() |
|
634 |
.zip(&self.vertices[1..]) |
|
635 |
.map(|(s, e)| Line::new(*s, *e)) |
|
636 |
} |
|
14161 | 637 |
|
638 |
pub fn bezierize(&mut self, segments_number: u32) { |
|
639 |
fn calc_point(p1: Point, p2: Point, p3: Point) -> FPPoint { |
|
640 |
let diff13 = (p1 - p3).to_fppoint(); |
|
641 |
let diff13_norm = diff13.distance(); |
|
642 |
||
643 |
if diff13_norm.is_zero() { |
|
644 |
diff13 |
|
645 |
} else { |
|
646 |
let diff12_norm = (p1 - p2).to_fppoint().distance(); |
|
647 |
let diff23_norm = (p2 - p3).to_fppoint().distance(); |
|
648 |
let min_distance = min(diff13_norm, min(diff12_norm, diff23_norm)); |
|
649 |
||
650 |
diff13 * min_distance / diff13_norm / 3 |
|
651 |
} |
|
652 |
} |
|
653 |
||
654 |
if self.vertices.len() < 4 { |
|
655 |
return; |
|
656 |
} |
|
657 |
||
658 |
let delta = fp!(1 / segments_number); |
|
659 |
let mut bezierized_vertices = Vec::new(); |
|
660 |
let mut pi = 0; |
|
661 |
let mut i = 1; |
|
662 |
let mut ni = 2; |
|
663 |
let mut right_point = calc_point(self.vertices[pi], self.vertices[i], self.vertices[ni]); |
|
664 |
let mut left_point; |
|
665 |
||
666 |
pi += 1; |
|
667 |
while pi != 0 { |
|
668 |
pi = i; |
|
669 |
i = ni; |
|
670 |
ni += 1; |
|
671 |
if ni >= self.vertices.len() { |
|
672 |
ni = 0; |
|
673 |
} |
|
674 |
||
675 |
left_point = right_point; |
|
676 |
right_point = calc_point(self.vertices[pi], self.vertices[i], self.vertices[ni]); |
|
677 |
||
678 |
bezierized_vertices.extend(BezierCurveSegments::new( |
|
679 |
Line::new(self.vertices[pi], self.vertices[i]), |
|
680 |
left_point, |
|
681 |
-right_point, |
|
682 |
delta, |
|
683 |
)); |
|
684 |
} |
|
685 |
||
686 |
self.vertices = bezierized_vertices; |
|
687 |
} |
|
14115 | 688 |
} |
689 |
||
14155
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
690 |
struct PolygonPointsIteratorMut<'a> { |
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
691 |
source: &'a mut Polygon, |
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
692 |
start: *mut Point, |
14161 | 693 |
end: *mut Point, |
14155
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
694 |
} |
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
695 |
|
14161 | 696 |
impl<'a> Iterator for PolygonPointsIteratorMut<'a> { |
14155
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
697 |
type Item = &'a mut Point; |
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
698 |
|
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
699 |
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
|
700 |
if self.start == self.end { |
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
701 |
None |
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
702 |
} else { |
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
703 |
unsafe { |
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
704 |
let result = &mut *self.start; |
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
705 |
self.start = self.start.add(1); |
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
706 |
Some(result) |
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
707 |
} |
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
708 |
} |
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
709 |
} |
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
710 |
} |
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
711 |
|
14161 | 712 |
impl<'a> Drop for PolygonPointsIteratorMut<'a> { |
14155
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
713 |
fn drop(&mut self) { |
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
714 |
self.source.force_close(); |
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
715 |
} |
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
716 |
} |
09f62bb046ef
actually there is a way to preserve mutable polygon iterator
alfadur
parents:
14154
diff
changeset
|
717 |
|
14115 | 718 |
impl From<Vec<Point>> for Polygon { |
719 |
fn from(mut v: Vec<Point>) -> Self { |
|
720 |
if !v.is_empty() && v[0] != v[v.len() - 1] { |
|
721 |
let start = v[0]; |
|
722 |
v.push(start) |
|
723 |
} |
|
724 |
Self { vertices: v } |
|
725 |
} |
|
726 |
} |
|
727 |
||
14097
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
728 |
#[derive(PartialEq, Eq, Clone, Copy, Debug)] |
14152 | 729 |
pub struct Ray { |
730 |
pub start: Point, |
|
14161 | 731 |
pub direction: Point, |
14152 | 732 |
} |
733 |
||
734 |
impl Ray { |
|
735 |
#[inline] |
|
14648 | 736 |
pub const fn new(start: Point, direction: Point) -> Ray { |
14152 | 737 |
Self { start, direction } |
738 |
} |
|
739 |
||
740 |
#[inline] |
|
14648 | 741 |
pub const fn tangent_mul(&self, x: i32) -> i32 { |
14163 | 742 |
self.direction.tangent_mul(x) |
14152 | 743 |
} |
744 |
||
745 |
#[inline] |
|
14648 | 746 |
pub const fn cotangent_mul(&self, y: i32) -> i32 { |
14163 | 747 |
self.direction.cotangent_mul(y) |
14152 | 748 |
} |
749 |
||
750 |
#[inline] |
|
751 |
pub fn orientation(&self, point: Point) -> i32 { |
|
752 |
(point - self.start).cross(self.direction).signum() |
|
753 |
} |
|
754 |
} |
|
755 |
||
756 |
#[derive(PartialEq, Eq, Clone, Copy, Debug)] |
|
14097
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
757 |
pub struct Line { |
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
758 |
pub start: Point, |
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
759 |
pub end: Point, |
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
760 |
} |
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
761 |
|
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
762 |
impl Line { |
14648 | 763 |
pub const ZERO: Self = Self::new(Point::ZERO, Point::ZERO); |
14097
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
764 |
|
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
765 |
#[inline] |
14648 | 766 |
pub const fn new(start: Point, end: Point) -> Self { |
767 |
Self { start, end } |
|
14097
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
768 |
} |
14098 | 769 |
|
770 |
#[inline] |
|
771 |
pub fn center(&self) -> Point { |
|
14109
f483f844da98
component-wise division is actually useful sometimes
alfadur
parents:
14102
diff
changeset
|
772 |
(self.start + self.end) / 2 |
14098 | 773 |
} |
14127 | 774 |
|
775 |
#[inline] |
|
14152 | 776 |
pub fn scaled_direction(&self) -> Point { |
777 |
self.end - self.start |
|
778 |
} |
|
779 |
||
780 |
#[inline] |
|
14127 | 781 |
pub fn scaled_normal(&self) -> Point { |
14152 | 782 |
self.scaled_direction().rotate90() |
783 |
} |
|
784 |
||
785 |
#[inline] |
|
786 |
pub fn to_ray(&self) -> Ray { |
|
787 |
Ray::new(self.start, self.scaled_direction()) |
|
14127 | 788 |
} |
14097
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
789 |
} |
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
790 |
|
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
791 |
impl IntoIterator for Line { |
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
792 |
type Item = Point; |
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
793 |
type IntoIter = LinePoints; |
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
794 |
|
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
795 |
fn into_iter(self) -> Self::IntoIter { |
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
796 |
LinePoints::new(self) |
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
797 |
} |
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
798 |
} |
14072
8a0d69c16cad
Implement OutlinePoints for land generators, some ground work for template based landgen
unc0rr
parents:
13971
diff
changeset
|
799 |
|
13956
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
800 |
pub struct LinePoints { |
13959
1fa905aa4cdb
move point struct into integral-geometry and use it to refactor a bit
alfadur
parents:
13958
diff
changeset
|
801 |
accumulator: Point, |
1fa905aa4cdb
move point struct into integral-geometry and use it to refactor a bit
alfadur
parents:
13958
diff
changeset
|
802 |
direction: Point, |
1fa905aa4cdb
move point struct into integral-geometry and use it to refactor a bit
alfadur
parents:
13958
diff
changeset
|
803 |
sign: Point, |
1fa905aa4cdb
move point struct into integral-geometry and use it to refactor a bit
alfadur
parents:
13958
diff
changeset
|
804 |
current: Point, |
1fa905aa4cdb
move point struct into integral-geometry and use it to refactor a bit
alfadur
parents:
13958
diff
changeset
|
805 |
total_steps: i32, |
1fa905aa4cdb
move point struct into integral-geometry and use it to refactor a bit
alfadur
parents:
13958
diff
changeset
|
806 |
step: i32, |
13956
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
807 |
} |
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
808 |
|
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
809 |
impl LinePoints { |
14097
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
810 |
pub fn new(line: Line) -> Self { |
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
811 |
let dir = line.end - line.start; |
13956
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
812 |
|
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
813 |
Self { |
14648 | 814 |
accumulator: Point::ZERO, |
13959
1fa905aa4cdb
move point struct into integral-geometry and use it to refactor a bit
alfadur
parents:
13958
diff
changeset
|
815 |
direction: dir.abs(), |
1fa905aa4cdb
move point struct into integral-geometry and use it to refactor a bit
alfadur
parents:
13958
diff
changeset
|
816 |
sign: dir.signum(), |
14097
e5904ead4864
Introduce OutlineSegmentsIterator, some refactoring
unC0Rr
parents:
14080
diff
changeset
|
817 |
current: line.start, |
13959
1fa905aa4cdb
move point struct into integral-geometry and use it to refactor a bit
alfadur
parents:
13958
diff
changeset
|
818 |
total_steps: dir.max_norm(), |
1fa905aa4cdb
move point struct into integral-geometry and use it to refactor a bit
alfadur
parents:
13958
diff
changeset
|
819 |
step: 0, |
13956
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
820 |
} |
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
821 |
} |
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
822 |
} |
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
823 |
|
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
824 |
impl Iterator for LinePoints { |
13959
1fa905aa4cdb
move point struct into integral-geometry and use it to refactor a bit
alfadur
parents:
13958
diff
changeset
|
825 |
type Item = Point; |
13956
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
826 |
|
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
827 |
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
|
828 |
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
|
829 |
self.accumulator += self.direction; |
13956
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
830 |
|
13959
1fa905aa4cdb
move point struct into integral-geometry and use it to refactor a bit
alfadur
parents:
13958
diff
changeset
|
831 |
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
|
832 |
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
|
833 |
self.current.x += self.sign.x; |
13956
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
834 |
} |
13959
1fa905aa4cdb
move point struct into integral-geometry and use it to refactor a bit
alfadur
parents:
13958
diff
changeset
|
835 |
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
|
836 |
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
|
837 |
self.current.y += self.sign.y; |
13956
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
838 |
} |
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
839 |
|
13959
1fa905aa4cdb
move point struct into integral-geometry and use it to refactor a bit
alfadur
parents:
13958
diff
changeset
|
840 |
self.step += 1; |
13956
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
841 |
|
13959
1fa905aa4cdb
move point struct into integral-geometry and use it to refactor a bit
alfadur
parents:
13958
diff
changeset
|
842 |
Some(self.current) |
13956
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
843 |
} else { |
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
844 |
None |
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
845 |
} |
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
846 |
} |
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
847 |
} |
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
848 |
|
13962 | 849 |
pub struct ArcPoints { |
850 |
point: Point, |
|
851 |
step: i32, |
|
852 |
} |
|
853 |
||
854 |
impl ArcPoints { |
|
14648 | 855 |
pub const fn new(radius: i32) -> Self { |
13962 | 856 |
Self { |
857 |
point: Point::new(0, radius), |
|
858 |
step: 3 - 2 * radius, |
|
859 |
} |
|
860 |
} |
|
861 |
} |
|
862 |
||
863 |
impl Iterator for ArcPoints { |
|
864 |
type Item = Point; |
|
865 |
||
866 |
fn next(&mut self) -> Option<Self::Item> { |
|
867 |
if self.point.x < self.point.y { |
|
868 |
let result = self.point; |
|
869 |
||
870 |
if self.step < 0 { |
|
871 |
self.step += self.point.x * 4 + 6; |
|
872 |
} else { |
|
873 |
self.step += (self.point.x - self.point.y) * 4 + 10; |
|
874 |
self.point.y -= 1; |
|
875 |
} |
|
876 |
||
877 |
self.point.x += 1; |
|
878 |
||
879 |
Some(result) |
|
880 |
} else if self.point.x == self.point.y { |
|
13968 | 881 |
self.point.x += 1; |
13971 | 882 |
|
13962 | 883 |
Some(self.point) |
884 |
} else { |
|
885 |
None |
|
886 |
} |
|
887 |
} |
|
888 |
} |
|
889 |
||
13963
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
890 |
pub struct EquidistantPoints { |
15203 | 891 |
vector: Vec<Point>, |
13963
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
892 |
} |
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
893 |
|
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
894 |
impl EquidistantPoints { |
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
895 |
pub fn new(vector: Point) -> Self { |
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
896 |
Self { |
15203 | 897 |
vector: if vector.x == vector.y { |
898 |
vec![ |
|
899 |
Point::new(vector.x, vector.x), |
|
900 |
Point::new(vector.x, -vector.x), |
|
901 |
Point::new(-vector.x, -vector.x), |
|
902 |
Point::new(-vector.x, vector.x), |
|
903 |
] |
|
904 |
} else { |
|
905 |
vec![ |
|
906 |
Point::new(vector.x, vector.y), |
|
907 |
Point::new(vector.x, -vector.y), |
|
908 |
Point::new(-vector.x, -vector.y), |
|
909 |
Point::new(-vector.x, vector.y), |
|
910 |
Point::new(vector.y, vector.x), |
|
911 |
Point::new(vector.y, -vector.x), |
|
912 |
Point::new(-vector.y, -vector.x), |
|
913 |
Point::new(-vector.y, vector.x), |
|
914 |
] |
|
915 |
}, |
|
13963
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
916 |
} |
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
917 |
} |
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
918 |
} |
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
919 |
|
15203 | 920 |
impl IntoIterator for EquidistantPoints { |
13963
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
921 |
type Item = Point; |
15203 | 922 |
type IntoIter = std::vec::IntoIter<Point>; |
13963
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
923 |
|
15203 | 924 |
fn into_iter(self) -> Self::IntoIter { |
925 |
self.vector.into_iter() |
|
13963
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
926 |
} |
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
927 |
} |
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
928 |
|
14160 | 929 |
pub struct BezierCurveSegments { |
930 |
segment: Line, |
|
14167 | 931 |
control_point1: FPPoint, |
932 |
control_point2: FPPoint, |
|
14160 | 933 |
offset: FPNum, |
14161 | 934 |
max_offset: FPNum, |
14160 | 935 |
delta: FPNum, |
14161 | 936 |
have_finished: bool, |
14160 | 937 |
} |
938 |
||
939 |
impl BezierCurveSegments { |
|
14161 | 940 |
pub fn new(segment: Line, p1: FPPoint, p2: FPPoint, delta: FPNum) -> Self { |
14160 | 941 |
Self { |
942 |
segment, |
|
14167 | 943 |
control_point1: segment.start.to_fppoint() - p1, |
944 |
control_point2: segment.end.to_fppoint() - p2, |
|
14160 | 945 |
offset: fp!(0), |
14161 | 946 |
max_offset: fp!(4095 / 4096), |
14160 | 947 |
delta, |
14161 | 948 |
have_finished: false, |
14160 | 949 |
} |
950 |
} |
|
951 |
} |
|
952 |
||
953 |
impl Iterator for BezierCurveSegments { |
|
954 |
type Item = Point; |
|
955 |
||
956 |
fn next(&mut self) -> Option<Self::Item> { |
|
14161 | 957 |
if self.offset < self.max_offset { |
14160 | 958 |
let offset_sq = self.offset * self.offset; |
959 |
let offset_cub = offset_sq * self.offset; |
|
960 |
||
961 |
let r1 = fp!(1) - self.offset * 3 + offset_sq * 3 - offset_cub; |
|
962 |
let r2 = self.offset * 3 - offset_sq * 6 + offset_cub * 3; |
|
963 |
let r3 = offset_sq * 3 - offset_cub * 3; |
|
964 |
||
14167 | 965 |
let p = r1 * self.segment.start |
966 |
+ r2 * self.control_point1 |
|
967 |
+ r3 * self.control_point2 |
|
968 |
+ offset_cub * self.segment.end; |
|
14160 | 969 |
|
970 |
self.offset += self.delta; |
|
971 |
||
14167 | 972 |
Some(Point::from_fppoint(&p)) |
14161 | 973 |
} else if !self.have_finished { |
974 |
self.have_finished = true; |
|
975 |
||
976 |
Some(self.segment.end) |
|
14160 | 977 |
} else { |
978 |
None |
|
979 |
} |
|
980 |
} |
|
981 |
} |
|
982 |
||
13956
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
983 |
#[cfg(test)] |
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
984 |
mod tests { |
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
985 |
use super::*; |
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
986 |
|
13959
1fa905aa4cdb
move point struct into integral-geometry and use it to refactor a bit
alfadur
parents:
13958
diff
changeset
|
987 |
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
|
988 |
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
|
989 |
} |
1fa905aa4cdb
move point struct into integral-geometry and use it to refactor a bit
alfadur
parents:
13958
diff
changeset
|
990 |
|
13956
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
991 |
#[test] |
13963
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
992 |
fn line_basic() { |
14098 | 993 |
let line: Vec<Point> = Line::new(Point::new(0, 0), Point::new(3, 3)) |
994 |
.into_iter() |
|
995 |
.collect(); |
|
996 |
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
|
997 |
|
14098 | 998 |
assert_eq!(line, v); |
13959
1fa905aa4cdb
move point struct into integral-geometry and use it to refactor a bit
alfadur
parents:
13958
diff
changeset
|
999 |
} |
1fa905aa4cdb
move point struct into integral-geometry and use it to refactor a bit
alfadur
parents:
13958
diff
changeset
|
1000 |
|
1fa905aa4cdb
move point struct into integral-geometry and use it to refactor a bit
alfadur
parents:
13958
diff
changeset
|
1001 |
#[test] |
13963
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
1002 |
fn line_skewed() { |
14098 | 1003 |
let line: Vec<Point> = Line::new(Point::new(0, 0), Point::new(5, -7)) |
1004 |
.into_iter() |
|
1005 |
.collect(); |
|
13962 | 1006 |
let v = get_points(&[ |
1007 |
(0, 0), |
|
1008 |
(1, -1), |
|
1009 |
(2, -2), |
|
1010 |
(2, -3), |
|
1011 |
(3, -4), |
|
1012 |
(4, -5), |
|
1013 |
(4, -6), |
|
1014 |
(5, -7), |
|
1015 |
]); |
|
13959
1fa905aa4cdb
move point struct into integral-geometry and use it to refactor a bit
alfadur
parents:
13958
diff
changeset
|
1016 |
|
14098 | 1017 |
assert_eq!(line, v); |
13956
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
1018 |
} |
13963
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
1019 |
|
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
1020 |
#[test] |
13964
a325ed57ebfe
Don't generate unnecessary duplication in case of equal coordinates
unc0rr
parents:
13963
diff
changeset
|
1021 |
fn equidistant_full() { |
15203 | 1022 |
let n: Vec<Point> = EquidistantPoints::new(Point::new(1, 3)) |
1023 |
.into_iter() |
|
1024 |
.collect(); |
|
13963
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
1025 |
let v = get_points(&[ |
15203 | 1026 |
(1, 3), |
1027 |
(1, -3), |
|
13963
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
1028 |
(-1, -3), |
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
1029 |
(-1, 3), |
15203 | 1030 |
(3, 1), |
13963
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
1031 |
(3, -1), |
15203 | 1032 |
(-3, -1), |
13963
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
1033 |
(-3, 1), |
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
1034 |
]); |
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
1035 |
|
14098 | 1036 |
assert_eq!(n, v); |
13963
7e7a03e85ac4
Add EquidistantPoints iterator to help iterating over all points of circles
unc0rr
parents:
13962
diff
changeset
|
1037 |
} |
13964
a325ed57ebfe
Don't generate unnecessary duplication in case of equal coordinates
unc0rr
parents:
13963
diff
changeset
|
1038 |
|
a325ed57ebfe
Don't generate unnecessary duplication in case of equal coordinates
unc0rr
parents:
13963
diff
changeset
|
1039 |
#[test] |
a325ed57ebfe
Don't generate unnecessary duplication in case of equal coordinates
unc0rr
parents:
13963
diff
changeset
|
1040 |
fn equidistant_half() { |
15203 | 1041 |
let n: Vec<Point> = EquidistantPoints::new(Point::new(2, 2)) |
1042 |
.into_iter() |
|
1043 |
.collect(); |
|
1044 |
let v = get_points(&[(2, 2), (2, -2), (-2, -2), (-2, 2)]); |
|
14098 | 1045 |
|
1046 |
assert_eq!(n, v); |
|
1047 |
} |
|
13964
a325ed57ebfe
Don't generate unnecessary duplication in case of equal coordinates
unc0rr
parents:
13963
diff
changeset
|
1048 |
|
14098 | 1049 |
#[test] |
1050 |
fn line() { |
|
1051 |
let l = Line::new(Point::new(1, 1), Point::new(5, 6)); |
|
1052 |
||
1053 |
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
|
1054 |
} |
14099 | 1055 |
|
1056 |
#[test] |
|
1057 |
fn rect() { |
|
14158
3119d665d3c6
collapse rectangle types back together with consistent usage of size
alfadur
parents:
14156
diff
changeset
|
1058 |
let r = Rect::from_box(10, 100, 0, 70); |
14099 | 1059 |
|
14102 | 1060 |
assert!(r.contains_inside(Point::new(99, 69))); |
1061 |
assert!(!r.contains_inside(Point::new(100, 70))); |
|
1062 |
||
14099 | 1063 |
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
|
1064 |
assert_eq!(r.with_margin(12), Rect::from_box(22, 88, 12, 58)); |
14099 | 1065 |
} |
14146 | 1066 |
|
1067 |
#[test] |
|
1068 |
fn fit() { |
|
14158
3119d665d3c6
collapse rectangle types back together with consistent usage of size
alfadur
parents:
14156
diff
changeset
|
1069 |
let r = Rect::from_box(10, 100, 0, 70); |
14146 | 1070 |
|
14156
7f5a591e1c43
separate rectangle types based on right/bottom edge inclusivity
alfadur
parents:
14155
diff
changeset
|
1071 |
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
|
1072 |
assert_eq!(Point::new(1000, 1000).clamp(&r), Point::new(100, 70)); |
14146 | 1073 |
} |
13956
75eaf7c71789
Introduce integral-geometry crate, implement LinePoints iterator
unc0rr
parents:
diff
changeset
|
1074 |
} |