rust/theme-editor/src/main.rs
author alfadur
Fri, 02 Nov 2018 19:45:16 +0300
changeset 14111 43d956f41cd4
parent 14075 3185fb34f3b5
child 14119 a8e194ae26e8
permissions -rw-r--r--
update theme editor
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use sdl2::{
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    keyboard::Scancode,
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    event::EventType,
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    surface::Surface,
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    pixels::{
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        PixelFormatEnum, Color
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    }
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};
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use integral_geometry::{Point, Size, Rect, Line};
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use rand::{
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    thread_rng, RngCore, Rng,
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    distributions::uniform::SampleUniform
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};
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use landgen::{
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    template_based::TemplatedLandGenerator,
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    outline_template::OutlineTemplate,
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    LandGenerator,
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    LandGenerationParameters
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};
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use land2d::Land2D;
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use lfprng::LaggedFibonacciPRNG;
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struct LandSource<T> {
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    rnd: LaggedFibonacciPRNG,
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    generator: T
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}
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impl <T: LandGenerator> LandSource<T> {
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    fn new(generator: T) -> Self {
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        let mut init = [0u8; 64];
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        thread_rng().fill_bytes(&mut init);
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        LandSource {
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            rnd: LaggedFibonacciPRNG::new(&init),
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            generator
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        }
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    }
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    fn next(&mut self, parameters: LandGenerationParameters<u32>) -> Land2D<u32> {
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        self.generator.generate_land(parameters, &mut self.rnd)
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    }
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}
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fn fill_pixels(pixels: &mut [u8], land: &Land2D<u32>) {
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    for (surf_row, land_row) in pixels.chunks_mut(land.width() * 4).zip(land.rows()) {
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        for (surf_pixel, land_pixel) in surf_row.chunks_mut(4).zip(land_row) {
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            if let [b, g, r, a] = surf_pixel {
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                *a = 255; *r = *land_pixel as u8;
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            }
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        }
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    }
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}
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fn fill_texture(surface: &mut Surface, land: &Land2D<u32>) {
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    if surface.must_lock() {
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        surface.with_lock_mut(|data| fill_pixels(data, land));
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    } else {
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        surface.without_lock_mut().map(|data| fill_pixels(data, land));
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    }
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}
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fn rnd<T: Default + SampleUniform + Ord>(max: T) -> T {
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    thread_rng().gen_range(T::default(), max)
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}
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const WIDTH: u32 = 512;
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const HEIGHT: u32 = 512;
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const SIZE: Size = Size {width: 512, height: 512};
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fn point() -> Point {
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    Point::new(rnd(WIDTH as i32), rnd(HEIGHT as i32))
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}
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fn rect() -> Rect {
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    Rect::new(rnd(WIDTH as i32), rnd(HEIGHT as i32), rnd(120) + 8, rnd(120) + 8)
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}
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fn init_source() -> LandSource<TemplatedLandGenerator> {
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    let template = OutlineTemplate::new(SIZE)
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        .with_fill_points((0..32).map(|_| point()).collect())
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        .with_islands((0..16).map(|_| vec![rect()]).collect());
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    let generator = TemplatedLandGenerator::new(template);
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    LandSource::new(generator)
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}
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fn draw_random_lines(land: &mut Land2D<u32>) {
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    for i in 0..32 {
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        land.draw_thick_line(Line::new(point(), point()), rnd(5), u32::max_value());
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        land.fill_circle(point(), rnd(60), u32::max_value());
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    }
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}
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fn main() {
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    let sdl = sdl2::init().unwrap();
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    let _image = sdl2::image::init(sdl2::image::INIT_PNG).unwrap();
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    let events = sdl.event().unwrap();
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    let mut pump = sdl.event_pump().unwrap();
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    let video = sdl.video().unwrap();
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    let window = video.window("Theme Editor", WIDTH, HEIGHT)
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        .position_centered()
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        .build().unwrap();
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    let mut source = init_source();
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    let mut land = source.next(
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        LandGenerationParameters::new(0, u32::max_value()));
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    let mut land_surf = Surface::new(WIDTH, HEIGHT, PixelFormatEnum::ARGB8888).unwrap();
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    fill_texture(&mut land_surf, &land);
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    let mut win_surf = window.surface(&pump).unwrap();
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    let win_rect = win_surf.rect();
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    land_surf.blit(land_surf.rect(), &mut win_surf, win_rect).unwrap();
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    win_surf.update_window();
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    'pool: loop {
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        use sdl2::event::Event::*;
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        pump.pump_events();
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        while let Some(event) = pump.poll_event() {
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            match event {
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                Quit{ .. } => break 'pool,
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                _ => ()
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            }
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        }
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    }
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}