noteuclid/refraction
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Sample-generic code!

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numzero 2024-04-29 01:10:41 +03:00
parent 43eb0a2ea8
commit f2cbe6413a
1 changed files with 47 additions and 19 deletions
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66
src/bin/flat.rs
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@ -20,25 +20,7 @@ pub fn main() {
let canvas = create_drawing_window("Refraction");
canvas.draw(|gc| {
gc.canvas_height(1000.0);
gc.new_path();
//gc.circle(0.0, 0.0, space.coil_r + space.coil_w + space.coil_m);
//gc.circle(0.0, 0.0, space.coil_r + space.coil_w);
//gc.circle(0.0, 0.0, space.coil_r - space.coil_w);
//gc.circle(0.0, 0.0, space.coil_r - space.coil_w - space.coil_m);
gc.winding_rule(WindingRule::EvenOdd);
gc.fill_color(Color::Rgba(0.8, 0.8, 0.8, 1.0));
gc.fill();
gc.line_width(0.5);
gc.stroke_color(Color::Rgba(1.0, 0.5, 0.0, 1.0));
for y in itertools_num::linspace(-1.0, 1.0, 101) {
draw_ray(gc, &space, vec2(-500.0, 0.0), vec2(1.0, y));
}
// gc.stroke_color(Color::Rgba(0.0, 0.5, 1.0, 1.0));
// for y in itertools_num::linspace(-1.0, 1.0, 101) {
// draw_ray(gc, &space, vec2(0.0, space.coil_r), vec2(1.0, y));
// }
space.render(gc);
});
});
}
@ -56,6 +38,52 @@ fn draw_ray(gc: &mut Vec<Draw>, space: &impl Metric, base: Vec2, dir: Vec2) {
gc.stroke();
}
fn draw_fan(gc: &mut Vec<Draw>, space: &impl Metric, base: Vec2, dir: Vec2, spread: f32) {
let dir = dir.normalize();
let v = vec2(-dir.y, dir.x);
for y in itertools_num::linspace(-spread, spread, 101) {
draw_ray(gc, space, base, dir + y * v);
}
}
trait Renderable {
fn render(&self, gc: &mut Vec<Draw>);
}
impl Renderable for Coil {
fn render(&self, gc: &mut Vec<Draw>) {
gc.new_path();
gc.circle(0.0, 0.0, self.coil_r + self.coil_w + self.coil_m);
gc.circle(0.0, 0.0, self.coil_r + self.coil_w);
gc.circle(0.0, 0.0, self.coil_r - self.coil_w);
gc.circle(0.0, 0.0, self.coil_r - self.coil_w - self.coil_m);
gc.winding_rule(WindingRule::EvenOdd);
gc.fill_color(Color::Rgba(0.8, 0.8, 0.8, 1.0));
gc.fill();
gc.line_width(0.5);
gc.stroke_color(Color::Rgba(1.0, 0.5, 0.0, 1.0));
draw_fan(gc, self, vec2(-500.0, 0.0), vec2(1.0, 0.0), 1.0);
gc.stroke_color(Color::Rgba(0.0, 0.5, 1.0, 1.0));
draw_fan(gc, self, vec2(0.0, self.coil_r), vec2(1.0, 0.0), 1.0);
}
}
impl Renderable for Rect {
fn render(&self, gc: &mut Vec<Draw>) {
gc.new_path();
gc.rect(self.box_a.x - self.box_m.x, self.box_a.y - self.box_m.y, self.box_b.x + self.box_m.x, self.box_b.y + self.box_m.y);
gc.rect(self.box_a.x, self.box_a.y, self.box_b.x, self.box_b.y);
gc.winding_rule(WindingRule::EvenOdd);
gc.fill_color(Color::Rgba(0.8, 0.8, 0.8, 1.0));
gc.fill();
gc.line_width(0.5);
gc.stroke_color(Color::Rgba(1.0, 0.5, 0.0, 1.0));
draw_fan(gc, self, vec2(-500.0, 0.0), vec2(1.0, 0.0), 1.0);
gc.stroke_color(Color::Rgba(0.0, 0.5, 1.0, 1.0));
draw_fan(gc, self, vec2(0.0, 0.5 * self.box_a.y), vec2(1.0, 1.0), 1.0);
}
}
struct Coil {
coil_m: f32,
coil_scale: f32,