fix: remove sine-cosine transformations from model matrix calculation

src/main.rs

@@ -359,24 +359,6 @@ fn main() {
 
                 // == // Issue the necessary gl:: commands to draw your scene here
                 simple_shader.activate();
-                // build Model matrix (start from identity)
-                let mut model: glm::Mat4 = glm::identity();
-                // cycle through each transform parameter (a,b,c,d,e,f) over time
-                let cycle_duration = 2.0;
-                let idx = ((elapsed / cycle_duration).floor() as usize) % 6;
-                let v = elapsed.sin();
-                match idx {
-                    0 => model[(0,0)] = v, // a
-                    1 => model[(0,1)] = v, // b
-                    2 => model[(0,3)] = v, // c
-                    3 => model[(1,0)] = v, // d
-                    4 => model[(1,1)] = v, // e
-                    5 => model[(1,3)] = v, // f
-                    _ => {}
-                }
-                // model translation to initial view distance
-                let translation_model: glm::Mat4 = glm::translation(&glm::vec3(0.0, 0.0, -5.0));
-                let model = translation_model * model;
                 // build View matrix: translate and rotate world relative to camera
                 let view_translation: glm::Mat4 = glm::translation(&(-cam_pos));
                 let view_rot_y: glm::Mat4 = glm::rotation(-cam_yaw, &glm::vec3(0.0, 1.0, 0.0));
@@ -385,9 +367,6 @@ fn main() {
                 // build Projection matrix
                 let projection: glm::Mat4 =
                     glm::perspective(window_aspect_ratio, std::f32::consts::PI / 4.0, 1.0, 1000.0);
-                // final transform: Projection * View * Model
-                let transform: glm::Mat4 = projection * view * model;
-                gl::UniformMatrix4fv(transform_loc, 1, gl::FALSE, transform.as_ptr());
 
                 // Draw the lunar terrain
                 let model_terrain: glm::Mat4 = glm::identity();