project structure cleanup

src/renderer/camera.rs

@@ -0,0 +1,38 @@
+use cgmath::{Point3, Vector3, Matrix4, Deg};
+
+pub struct Camera {
+    pub position: Point3<f32>,
+    pub forward: Vector3<f32>,
+    pub up: Vector3<f32>,
+    aspect: f32,
+    fovy: f32,
+    znear: f32,
+    zfar: f32,
+}
+
+impl Camera {
+
+    pub fn new(aspect: f32, fov: f32) -> Self {
+        Self {
+            position: (0.0, 1.0, 0.0).into(),
+            forward: (0.0, 0.0, 1.0).into(),
+            up: Vector3::unit_y(),
+            aspect,
+            fovy: fov,
+            znear: 0.1,
+            zfar: 100.0
+        }
+    }
+
+    pub fn set_aspect(&mut self, aspect: f32) {
+        self.aspect = aspect;
+    }
+
+    pub fn proj_matrix(&self) -> Matrix4<f32> {
+        return cgmath::perspective(Deg(self.fovy), self.aspect, self.znear, self.zfar);
+    }
+
+    pub fn view_matrix(&self) -> Matrix4<f32> {
+        return Matrix4::look_to_rh((0.0,0.0,0.0).into(), self.forward, self.up);
+    }
+}