Function vec2

pub const fn vec2(x: f32, y: f32) -> Vec2

Creates a 2-dimensional vector.

Examples found in repository

examples/tree.rs (line 32)

async fn main() {
    let camera = Camera2D {
        zoom: vec2(1., 1.),
        target: vec2(0.0, 0.5),
        ..Default::default()
    };

    set_camera(&camera);
    loop {
        clear_background(LIGHTGRAY);

        draw_circle(0., 0., 0.03, DARKGRAY);
        tree(unsafe { get_internal_gl().quad_gl }, get_time(), 0, 1., 0.3);

        next_frame().await
    }
}

examples/camera.rs (line 11)

async fn main() {
    loop {
        clear_background(LIGHTGRAY);

        // Render some primitives in camera space

        set_camera(&Camera2D {
            zoom: vec2(1., screen_width() / screen_height()),
            ..Default::default()
        });
        draw_line(-0.4, 0.4, -0.8, 0.9, 0.05, BLUE);
        draw_rectangle(-0.3, 0.3, 0.2, 0.2, GREEN);
        draw_circle(0., 0., 0.1, YELLOW);

        // Back to screen space, render some text

        set_default_camera();
        draw_text("HELLO", 30.0, 200.0, 30.0, BLACK);

        next_frame().await
    }
}

examples/screen_texture.rs (line 27)

async fn main() {
    let texture: Texture2D = load_texture("examples/chess.png").await.unwrap();

    let lens_material = load_material(
        ShaderSource::Glsl {
            vertex: LENS_VERTEX_SHADER,
            fragment: LENS_FRAGMENT_SHADER,
        },
        MaterialParams {
            uniforms: vec![UniformDesc::new("Center", UniformType::Float2)],
            ..Default::default()
        },
    )
    .unwrap();

    loop {
        clear_background(WHITE);
        draw_texture_ex(
            &texture,
            0.0,
            0.0,
            WHITE,
            DrawTextureParams {
                dest_size: Some(vec2(screen_width(), screen_height())),
                ..Default::default()
            },
        );

        let lens_center = mouse_position();

        lens_material.set_uniform("Center", lens_center);

        gl_use_material(&lens_material);
        draw_circle(lens_center.0, lens_center.1, 250.0, RED);
        gl_use_default_material();

        next_frame().await
    }
}

examples/exit_dialog.rs (line 19)

async fn main() {
    prevent_quit();

    let mut show_exit_dialog = false;
    let mut user_decided_to_exit = false;

    loop {
        clear_background(GRAY);

        if is_quit_requested() {
            show_exit_dialog = true;
        }

        if show_exit_dialog {
            let dialog_size = vec2(200., 70.);
            let screen_size = vec2(screen_width(), screen_height());
            let dialog_position = screen_size / 2. - dialog_size / 2.;
            Window::new(hash!(), dialog_position, dialog_size).ui(&mut *root_ui(), |ui| {
                ui.label(None, "Do you really want to quit?");
                ui.separator();
                ui.same_line(60.);
                if ui.button(None, "Yes") {
                    user_decided_to_exit = true;
                }
                ui.same_line(120.);
                if ui.button(None, "No") {
                    show_exit_dialog = false;
                }
            });
        }

        if user_decided_to_exit {
            break;
        }

        next_frame().await
    }
}

examples/3d.rs (line 26)

async fn main() {
    let rust_logo = load_texture("examples/rust.png").await.unwrap();
    let ferris = load_texture("examples/ferris.png").await.unwrap();

    loop {
        clear_background(LIGHTGRAY);

        // Going 3d!

        set_camera(&Camera3D {
            position: vec3(-20., 15., 0.),
            up: vec3(0., 1., 0.),
            target: vec3(0., 0., 0.),
            ..Default::default()
        });

        draw_grid(20, 1., BLACK, GRAY);

        draw_cube_wires(vec3(0., 1., -6.), vec3(2., 2., 2.), DARKGREEN);
        draw_cube_wires(vec3(0., 1., 6.), vec3(2., 2., 2.), DARKBLUE);
        draw_cube_wires(vec3(2., 1., 2.), vec3(2., 2., 2.), YELLOW);

        draw_plane(vec3(-8., 0., -8.), vec2(5., 5.), Some(&ferris), WHITE);

        draw_cube(
            vec3(-5., 1., -2.),
            vec3(2., 2., 2.),
            Some(&rust_logo),
            WHITE,
        );
        draw_cube(vec3(-5., 1., 2.), vec3(2., 2., 2.), Some(&ferris), WHITE);
        draw_cube(vec3(2., 0., -2.), vec3(0.4, 0.4, 0.4), None, BLACK);

        draw_sphere(vec3(-8., 0., 0.), 1., None, BLUE);

        // Back to screen space, render some text

        set_default_camera();
        draw_text("WELCOME TO 3D WORLD", 10.0, 20.0, 30.0, BLACK);

        next_frame().await
    }
}

examples/post_processing.rs (line 22)

async fn main() {
    let render_target = render_target(320, 150);
    render_target.texture.set_filter(FilterMode::Nearest);

    let material = load_material(
        ShaderSource::Glsl {
            vertex: CRT_VERTEX_SHADER,
            fragment: CRT_FRAGMENT_SHADER,
        },
        Default::default(),
    )
    .unwrap();

    loop {
        // drawing to the texture

        // 0..100, 0..100 camera
        set_camera(&Camera2D {
            zoom: vec2(0.01, 0.01),
            target: vec2(0.0, 0.0),
            render_target: Some(render_target.clone()),
            ..Default::default()
        });

        clear_background(LIGHTGRAY);
        draw_line(-30.0, 45.0, 30.0, 45.0, 3.0, BLUE);
        draw_circle(-45.0, -35.0, 20.0, YELLOW);
        draw_circle(45.0, -35.0, 20.0, GREEN);

        // drawing to the screen

        set_default_camera();

        clear_background(WHITE);
        gl_use_material(&material);
        draw_texture_ex(
            &render_target.texture,
            0.,
            0.,
            WHITE,
            DrawTextureParams {
                dest_size: Some(vec2(screen_width(), screen_height())),
                ..Default::default()
            },
        );
        gl_use_default_material();

        next_frame().await;
    }
}

Additional examples can be found in:

• examples/raw_miniquad.rs
• examples/letterbox.rs
• examples/arkanoid.rs
• examples/camera_transformations.rs
• examples/ui.rs
• examples/ui_skins.rs
• examples/shadertoy.rs