test: add some tests for affine transforms

makefile.am

@@ -112,7 +112,8 @@ test_tests_SOURCES=\
     test/src/test_quat.c \
     test/src/test_vec4.c \
     test/src/test_vec3.c \
-    test/src/test_mat3.c
+    test/src/test_mat3.c \
+    test/src/test_affine.c
 
 all-local:
 	sh ./post-build.sh

test/src/test_affine.c

@@ -0,0 +1,104 @@
+/*
+ * 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_affine(void **state) {
+  mat4 t1, t2, t3, t4, t5;
+
+  /* test translate is postmultiplied */
+  glmc_rotate_make(t1, M_PI_4, GLM_YUP);
+  glm_translate_make(t2, (vec3){34, 57, 36});
+
+  glmc_mat4_mul(t1, t2, t3); /* R * T */
+
+  glm_translate(t1, (vec3){34, 57, 36});
+  test_assert_mat4_eq(t1, t3);
+
+  /* test rotate is postmultiplied */
+  glmc_rotate_make(t1, M_PI_4, GLM_YUP);
+  glm_translate_make(t2, (vec3){34, 57, 36});
+
+  glmc_mat4_mul(t2, t1, t3); /* T * R */
+
+  glm_rotate(t2, M_PI_4, GLM_YUP);
+  test_assert_mat4_eq(t2, t3);
+
+  /* test scale is postmultiplied */
+  glmc_rotate_make(t1, M_PI_4, GLM_YUP);
+  glm_translate_make(t2, (vec3){34, 57, 36});
+  glm_scale_make(t4, (vec3){3, 5, 6});
+
+  glmc_mat4_mul(t2, t1, t3); /* T * R */
+  glmc_mat4_mul(t3, t4, t5); /* T * R * S */
+
+  glm_scale(t3, (vec3){3, 5, 6});
+  test_assert_mat4_eq(t3, t5);
+
+  /* test translate_x */
+  glmc_rotate_make(t1, M_PI_4, GLM_YUP);
+  glm_translate_make(t2, (vec3){34, 0, 0});
+
+  glmc_mat4_mul(t1, t2, t3); /* R * T */
+  glm_translate_x(t1, 34);
+  test_assert_mat4_eq(t1, t3);
+
+  /* test translate_y */
+  glmc_rotate_make(t1, M_PI_4, GLM_YUP);
+  glm_translate_make(t2, (vec3){0, 57, 0});
+
+  glmc_mat4_mul(t1, t2, t3); /* R * T */
+  glm_translate_y(t1, 57);
+  test_assert_mat4_eq(t1, t3);
+
+  /* test translate_z */
+  glmc_rotate_make(t1, M_PI_4, GLM_YUP);
+  glm_translate_make(t2, (vec3){0, 0, 36});
+
+  glmc_mat4_mul(t1, t2, t3); /* R * T */
+  glm_translate_z(t1, 36);
+  test_assert_mat4_eq(t1, t3);
+
+  /* test rotate_x */
+  glmc_rotate_make(t1, M_PI_4, (vec3){1, 0, 0});
+  glm_translate_make(t2, (vec3){34, 57, 36});
+
+  glmc_mat4_mul(t2, t1, t3); /* T * R */
+
+  glm_rotate_x(t2, M_PI_4, t2);
+  test_assert_mat4_eq(t2, t3);
+
+  /* test rotate_y */
+  glmc_rotate_make(t1, M_PI_4, (vec3){0, 1, 0});
+  glm_translate_make(t2, (vec3){34, 57, 36});
+
+  glmc_mat4_mul(t2, t1, t3); /* T * R */
+
+  glm_rotate_y(t2, M_PI_4, t2);
+  test_assert_mat4_eq(t2, t3);
+
+  /* test rotate_z */
+  glmc_rotate_make(t1, M_PI_4, (vec3){0, 0, 1});
+  glm_translate_make(t2, (vec3){34, 57, 36});
+
+  glmc_mat4_mul(t2, t1, t3); /* T * R */
+
+  glm_rotate_z(t2, M_PI_4, t2);
+  test_assert_mat4_eq(t2, t3);
+
+  /* test scale_uni */
+  glmc_rotate_make(t1, M_PI_4, GLM_YUP);
+  glm_translate_make(t2, (vec3){34, 57, 36});
+  glm_scale_make(t4, (vec3){3, 3, 3});
+
+  glmc_mat4_mul(t2, t1, t3); /* T * R */
+  glmc_mat4_mul(t3, t4, t5); /* T * R * S */
+
+  glm_scale_uni(t3, 3);
+  test_assert_mat4_eq(t3, t5);
+}

test/src/test_main.c

@@ -35,7 +35,10 @@ main(int argc, const char * argv[]) {
     cmocka_unit_test(test_vec4),
 
     /* vec3 */
-    cmocka_unit_test(test_vec3)
+    cmocka_unit_test(test_vec3),
+
+    /* affine */
+    cmocka_unit_test(test_affine)
   };
 
   return cmocka_run_group_tests(tests, NULL, NULL);

test/src/test_tests.h

@@ -37,4 +37,7 @@ test_vec4(void **state);
 void
 test_vec3(void **state);
 
+void
+test_affine(void **state);
+
 #endif /* test_tests_h */