I have no idea what I'm doing lol

raytracer.py

@@ -0,0 +1,24 @@
+import numpy as np
+
+# Z up
+
+class Raytracer:
+    def __init__(self, window_size, focal_length):
+        self.window_size = window_size
+        self.focal_length = focal_length
+
+        self.cam_pos = np.zeros(3, dtype=np.float32)
+        self.cam_rot = np.zeros(3, dtype=np.float32)
+        self.cam_dir = np.zeros(3, dtype=np.float32)
+
+    def update_cam_rot(self, cam_rot): # pitch (down - top) | yaw (left - right) | roll 
+        self.cam_rot = np.array(cam_rot, dtype=np.float32)
+
+        #### calculate camera direction ####
+        self.pitch_sin = np.sin(self.cam_rot[0])
+
+        self.cam_dir[0] = -np.sin(self.cam_rot[1]) * self.pitch_sin # from yaw and pitch
+        self.cam_dir[1] = np.cos(self.cam_rot[1]) * self.pitch_sin # from yaw and pitch
+        self.cam_dir[2] = -np.cos(self.cam_rot[0]) # from pitch
+        
+        print(self.cam_dir)