bronku/cube
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

draw square

Browse source
This commit is contained in:
bronku 2026-02-15 23:31:16 +01:00
parent 842f0d1f22
commit 6c73b01a52
1 changed files with 48 additions and 40 deletions
Download patch file Download diff file Expand all files Collapse all files

88
src/main.rs
View file

@ -4,26 +4,26 @@ const WINDOW_WIDTH: i32 = 640;
const WINDOW_HEIGHT: i32 = 480;
struct Vec2 {
x: f32,
y: f32,
x: f64,
y: f64,
}
impl Vec2 {
fn to_screen_space(self) -> (i32, i32) {
return (
((WINDOW_WIDTH as f32) * ((self.x + 1.0) / 2.0)) as i32,
((WINDOW_HEIGHT as f32) * ((self.y + 1.0) / 2.0)) as i32,
((WINDOW_WIDTH as f64) * ((self.x + 1.0) / 2.0)) as i32,
((WINDOW_HEIGHT as f64) * ((self.y + 1.0) / 2.0)) as i32,
);
}
}
struct Vec3 {
x: f32,
y: f32,
z: f32,
x: f64,
y: f64,
z: f64,
}
impl Vec3 {
fn to_screen_space(self) -> (i32, i32) {
const FOCAL_LENGTH: f32 = 1.0;
const FOCAL_LENGTH: f64 = 1.0;
let camera_pos = Vec2 {
x: FOCAL_LENGTH * self.x / self.z,
y: FOCAL_LENGTH * self.y / self.z,
@ -38,44 +38,52 @@ fn draw_point(d: &mut RaylibDrawHandle, pos: Vec3) {
d.draw_rectangle(window_x, window_y, POINT_SIZE, POINT_SIZE, Color::RED);
}
fn draw_square(d: &mut RaylibDrawHandle, dist: f64) {
draw_point(
d,
Vec3 {
x: -0.5,
y: -0.5,
z: dist,
},
);
draw_point(
d,
Vec3 {
x: 0.5,
y: -0.5,
z: dist,
},
);
draw_point(
d,
Vec3 {
x: 0.5,
y: 0.5,
z: dist,
},
);
draw_point(
d,
Vec3 {
x: -0.5,
y: 0.5,
z: dist,
},
);
}
fn main() {
let (mut rl, thread) = raylib::init().size(WINDOW_WIDTH, WINDOW_HEIGHT).build();
while !rl.window_should_close() {
// let time = rl.get_time();
let mut d = rl.begin_drawing(&thread);
draw_point(
&mut d,
Vec3 {
x: -0.5,
y: -0.5,
z: 1.0,
},
);
draw_point(
&mut d,
Vec3 {
x: 0.5,
y: -0.5,
z: 1.0,
},
);
draw_point(
&mut d,
Vec3 {
x: 0.5,
y: 0.5,
z: 1.0,
},
);
draw_point(
&mut d,
Vec3 {
x: -0.5,
y: 0.5,
z: 1.0,
},
);
// draw_square(&mut d, (time - 5.0) / 10.0);
draw_square(&mut d, 1.0);
draw_square(&mut d, 2.0);
d.clear_background(Color::WHITE);
}