test: test for plane

test/src/test_plane.h

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c), Recep Aslantas.
+ *
+ * MIT License (MIT), http://opensource.org/licenses/MIT
+ * Full license can be found in the LICENSE file
+ */
+
+#include "test_common.h"
+
+TEST_IMPL(GLM_PREFIX, plane_normalize) {
+  vec4  p1 = {2.0f, -3.0f, 4.0f, 5.0f}, p2 = {2.0f, -3.0f, 4.0f, 5.0f};
+  float s  = 1.0f;
+  float norm;
+
+  GLM(plane_normalize)(p2);
+
+  norm = sqrtf(p1[0] * p1[0] + p1[1] * p1[1] + p1[2] * p1[2]);
+  if (norm == 0.0f) {
+    ASSERT(test_eq(p1[0], 0.0f))
+    ASSERT(test_eq(p1[1], 0.0f))
+    ASSERT(test_eq(p1[2], 0.0f))
+    ASSERT(test_eq(p1[3], 0.0f))
+
+    TEST_SUCCESS
+  }
+  
+  norm = s / norm;
+  
+  ASSERT(test_eq(p1[0] * norm, p2[0]))
+  ASSERT(test_eq(p1[1] * norm, p2[1]))
+  ASSERT(test_eq(p1[2] * norm, p2[2]))
+  ASSERT(test_eq(p1[3] * norm, p2[3]))
+
+  glm_vec4_zero(p1);
+  GLM(plane_normalize)(p1);
+  ASSERTIFY(test_assert_vec4_eq(p1, GLM_VEC4_ZERO))
+
+  TEST_SUCCESS
+}

test/tests.h

@@ -120,6 +120,10 @@ TEST_DECLARE(glmc_unprojecti)
 TEST_DECLARE(glmc_unproject)
 TEST_DECLARE(glmc_project)
 
+/* plane */
+TEST_DECLARE(glm_plane_normalize)
+TEST_DECLARE(glmc_plane_normalize)
+
 /* utils */
 TEST_DECLARE(clamp)
 
@@ -623,6 +627,10 @@ TEST_LIST {
   TEST_ENTRY(glmc_unproject)
   TEST_ENTRY(glmc_project)
   
+  /* plane */
+  TEST_ENTRY(glm_plane_normalize)
+  TEST_ENTRY(glmc_plane_normalize)
+  
   /* utils */
   TEST_ENTRY(clamp)