Camera and rays

src/definitions/camera.cpp

@@ -7,15 +7,23 @@ Camera::Camera(glm::vec3 point, glm::vec3 dir, float w, float h, float f) {
 }
 
 void Camera::Update() {
-    //     Vector3 x_c = c->position;
+    glm::vec3 up = {0.0f, -1.0f, 0.0f};
+    glm::vec3 c0 = point + (direction * focalLen);
+    glm::vec3 uX = glm::normalize(glm::cross(direction, up));
+    glm::vec3 uY = glm::cross((direction * -1.0f), uX);
+    planeCenter = c0;
+    planeDirX = uX;
+    planeDirY = uY;
+    
+    // Vector3 x_c = c->position;
     // Vector3 u_c = c->direction;
     // double z_p = c->focalLength;
     // Vector3 v_up = vec3_make(0.0, -1.0, 0.0);
-    // Vector3 c_0 = vec3_add(x_c, vec3_mult(u_c, z_p));
-    // Vector3 u_x = vec3_unit(vec3_cross(u_c, v_up));
-    // Vector3 u_y = vec3_cross(vec3_mult(u_c, -1.0), u_x);
+    // Vector3 c_0 = vec3_add(position, vec3_mult(direction, focalLength));
+    // Vector3 u_x = vec3_unit(vec3_cross(direction, v_up));
+    // Vector3 u_y = vec3_cross(vec3_mult(direction, -1.0), u_x);
     // c->planeCenter = c_0;
     // c->planeDirectionX = u_x;
     // c->planeDirectionY = u_y;
-    // //    Vector3 u_z = vec3_mult(u_c, -1.0); // Normal to the view plane
+    // Vector3 u_z = vec3_mult(direction, -1.0); // Normal to the view plane
 }