I have no idea what I'm doing lol

.gitignore

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+__pycache__
+renders/*

main_scene.py

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+import pygame
+import numpy as np
+
+import raytracer # raytracer.py
+
+##### CONFIG #####
+window_size = (1280, 720)
+
+# raytracer config
+vertical_fov = 90 # fov in degrees
+
+##################
+
+
+# convert fov to radians
+vertical_fov = np.radians(vertical_fov)
+
+
+# pygame init
+pygame.init()
+window = pygame.display.set_mode(window_size)
+clock = pygame.time.Clock()
+
+
+# raytracer init
+focal_length = 1 / np.tan(vertical_fov / 2)
+rt = raytracer.Raytracer(window_size, focal_length)
+
+rt.update_cam_rot((np.radians(70), np.radians(-27), 0))
+
+
+
+
+# main loop
+while True:
+    # events
+    for event in pygame.event.get():
+        if event.type == pygame.QUIT:
+            pygame.quit()
+            quit()
+
+    window.fill((0, 0, 0))
+    
+
+
+    # update
+    pygame.display.update()
+    clock.tick(60)

raytracer.py

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+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)