test: add tests for euler XYZ

makefile.am

@@ -105,7 +105,8 @@ test_tests_SOURCES=\
     test/src/test_main.c \
     test/src/test_mat4.c \
     test/src/test_cam.c \
-    test/src/test_clamp.c
+    test/src/test_clamp.c \
+    test/src/test_euler.c
 
 all-local:
 	sh ./post-build.sh

test/src/test_common.c

@@ -50,3 +50,10 @@ test_assert_mat4_eq2(mat4 m1, mat4 m2, float eps) {
     }
   }
 }
+
+void
+test_assert_vec3_eq(vec3 v1, vec3 v2) {
+  assert_true(fabsf(v1[0] - v2[0]) <= 0.0000009);
+  assert_true(fabsf(v1[1] - v2[1]) <= 0.0000009);
+  assert_true(fabsf(v1[2] - v2[2]) <= 0.0000009);
+}

test/src/test_common.h

@@ -31,4 +31,7 @@ test_assert_mat4_eq(mat4 m1, mat4 m2);
 void
 test_assert_mat4_eq2(mat4 m1, mat4 m2, float eps);
 
+void
+test_assert_vec3_eq(vec3 v1, vec3 v2);
+
 #endif /* test_common_h */

test/src/test_euler.c

@@ -0,0 +1,44 @@
+/*
+ * 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"
+
+void
+test_euler(void **state) {
+  mat4  rot1, rot2;
+  vec3  inAngles, outAngles;
+
+  inAngles[0] = glm_rad(-45.0f);  /* X angle */
+  inAngles[1] = glm_rad(88.0f);   /* Y angle */
+  inAngles[2] = glm_rad(18.0f);   /* Z angle */
+
+  glm_euler_xyz(inAngles, rot1);
+
+  /* extract angles */
+  glmc_euler_angles(rot1, outAngles);
+
+  /* angles must be equal in that range */
+  test_assert_vec3_eq(inAngles, outAngles);
+
+  /* matrices must be equal */
+  glmc_euler_xyz(outAngles, rot2);
+  test_assert_mat4_eq(rot1, rot2);
+
+  /* change range */
+  inAngles[0] = glm_rad(-145.0f);  /* X angle */
+  inAngles[1] = glm_rad(818.0f);   /* Y angle */
+  inAngles[2] = glm_rad(181.0f);   /* Z angle */
+
+  glm_euler_xyz(inAngles, rot1);
+  glmc_euler_angles(rot1, outAngles);
+
+  /* angles may not be equal but matrices MUST! */
+
+  /* matrices must be equal */
+  glmc_euler_xyz(outAngles, rot2);
+  test_assert_mat4_eq(rot1, rot2);
+}

test/src/test_main.c

@@ -17,7 +17,10 @@ main(int argc, const char * argv[]) {
     cmocka_unit_test(test_camera_decomp),
 
     /* vector */
-    cmocka_unit_test(test_clamp)
+    cmocka_unit_test(test_clamp),
+
+    /* euler */
+     cmocka_unit_test(test_euler)
   };
 
   return cmocka_run_group_tests(tests, NULL, NULL);

test/src/test_tests.h

@@ -19,4 +19,7 @@ test_camera_decomp(void **state);
 void
 test_clamp(void **state);
 
+void
+test_euler(void **state);
+
 #endif /* test_tests_h */