glm_perlin_vec3 test

test/src/test_noise.h

@@ -41,3 +41,38 @@ TEST_IMPL(GLM_PREFIX, perlin_vec4) {
 
   TEST_SUCCESS
 }
+
+TEST_IMPL(GLM_PREFIX, perlin_vec3) {
+  vec3 p1[] = {
+    {0.1f, 0.2f, 0.3f},
+    {0.2f, 0.3f, 0.4f},
+    {0.3f, 0.4f, 0.5f},
+    {0.4f, 0.5f, 0.6f},
+    {0.5f, 0.6f, 0.7f},
+    {0.6f, 0.7f, 0.8f},
+    {0.7f, 0.8f, 0.9f},
+    {0.8f, 0.9f, 1.0f},
+    {0.9f, 1.0f, 1.1f},
+    {1.0f, 1.1f, 1.2f},
+  };
+
+  // expected values calculated by glm::perlin
+  float e[] = {
+    -0.2909241318702698f,
+    -0.4667602181434631f,
+    -0.4679279625415802f,
+    -0.2616460621356964f,
+    0.0562822706997395f,
+    0.3178773224353790f,
+    0.3981811404228210f,
+    0.3011017739772797f,
+    0.1263920217752457f,
+    -0.0602480024099350f
+  };
+  
+  for (int i = 0; i < 10; i++) {
+    ASSERT(test_eq(GLM(perlin_vec3)(p1[i]), e[i]));
+  }
+
+  TEST_SUCCESS
+}

test/tests.h

@@ -359,6 +359,8 @@ TEST_DECLARE(glmc_plane_normalize)
 /* noise */
 TEST_DECLARE(glm_perlin_vec4)
 TEST_DECLARE(glmc_perlin_vec4)
+TEST_DECLARE(glm_perlin_vec3)
+TEST_DECLARE(glmc_perlin_vec3)
 
 /* utils */
 TEST_DECLARE(clamp)
@@ -1541,6 +1543,8 @@ TEST_LIST {
   /* noise */
   TEST_ENTRY(glm_perlin_vec4)
   TEST_ENTRY(glmc_perlin_vec4)
+  TEST_ENTRY(glm_perlin_vec3)
+  TEST_ENTRY(glmc_perlin_vec3)
   
   /* utils */
   TEST_ENTRY(clamp)