Improve module hierarchy of custom_shader example

examples/custom_shader/src/camera.rs

@@ -1,53 +0,0 @@
-use glam::{mat4, vec3, vec4};
-use iced::Rectangle;
-
-#[derive(Copy, Clone)]
-pub struct Camera {
-    eye: glam::Vec3,
-    target: glam::Vec3,
-    up: glam::Vec3,
-    fov_y: f32,
-    near: f32,
-    far: f32,
-}
-
-impl Default for Camera {
-    fn default() -> Self {
-        Self {
-            eye: vec3(0.0, 2.0, 3.0),
-            target: glam::Vec3::ZERO,
-            up: glam::Vec3::Y,
-            fov_y: 45.0,
-            near: 0.1,
-            far: 100.0,
-        }
-    }
-}
-
-pub const OPENGL_TO_WGPU_MATRIX: glam::Mat4 = mat4(
-    vec4(1.0, 0.0, 0.0, 0.0),
-    vec4(0.0, 1.0, 0.0, 0.0),
-    vec4(0.0, 0.0, 0.5, 0.0),
-    vec4(0.0, 0.0, 0.5, 1.0),
-);
-
-impl Camera {
-    pub fn build_view_proj_matrix(&self, bounds: Rectangle) -> glam::Mat4 {
-        //TODO looks distorted without padding; base on surface texture size instead?
-        let aspect_ratio = bounds.width / (bounds.height + 150.0);
-
-        let view = glam::Mat4::look_at_rh(self.eye, self.target, self.up);
-        let proj = glam::Mat4::perspective_rh(
-            self.fov_y,
-            aspect_ratio,
-            self.near,
-            self.far,
-        );
-
-        OPENGL_TO_WGPU_MATRIX * proj * view
-    }
-
-    pub fn position(&self) -> glam::Vec4 {
-        glam::Vec4::from((self.eye, 0.0))
-    }
-}