init

tests/test_intersections.py

@@ -0,0 +1,30 @@
+import numpy as np
+
+from intersections import intersect_plane_ray
+from plane import Plane
+from ray import Ray
+from vector import Vector
+
+
+def test_intersections():
+  r = Ray(
+    Vector.fromargs(0, 0, 1),
+    Vector.fromargs(-1, -1, -1),
+  )
+  p = Plane(
+    Vector.fromargs(0, 0, 0),
+    Vector.fromargs(0, 0, 1),
+  )
+
+  assert intersect_plane_ray(p, r) == Vector.fromargs(-1, -1, 0)
+
+  np.random.seed(0)
+  for i in range(10):
+    p = Plane(Vector.random(), Vector.random())
+    r = Ray(Vector.random(), Vector.random())
+
+    intersection = intersect_plane_ray(p, r)
+
+    print(p, r, intersection)
+
+    assert p & intersection