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566b081cd7
We'll remove direct access to CoglMatrix struct fields, so update the test to not access them already. https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1439
64 lines
2.0 KiB
C
64 lines
2.0 KiB
C
#include <cogl/cogl.h>
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#include <math.h>
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#include <string.h>
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#include "test-declarations.h"
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#include "test-utils.h"
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/* Macros are used here instead of functions so that the
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* g_assert_cmpfloat will give a more interesting message when it
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* fails */
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#define COMPARE_FLOATS(a, b) \
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do { \
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if (fabsf ((a) - (b)) >= 0.0001f) \
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g_assert_cmpfloat ((a), ==, (b)); \
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} while (0)
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#define COMPARE_ELEMENT(a, b, idx) \
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do { \
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COMPARE_FLOATS (a[idx], b[idx]); \
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} while (0)
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#define COMPARE_MATRICES(a, b) \
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do { \
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const float *af = cogl_matrix_get_array (a);\
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const float *bf = cogl_matrix_get_array (b);\
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int i; \
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\
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for (i = 0; i < 16; i++) \
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COMPARE_ELEMENT (af, bf, i); \
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} while (0)
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void
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test_euler (void)
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{
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graphene_euler_t euler;
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CoglMatrix matrix_a, matrix_b;
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/* Try doing the rotation with three separate rotations */
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cogl_matrix_init_identity (&matrix_a);
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cogl_matrix_rotate (&matrix_a, -30.0f, 0.0f, 1.0f, 0.0f);
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cogl_matrix_rotate (&matrix_a, 40.0f, 1.0f, 0.0f, 0.0f);
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cogl_matrix_rotate (&matrix_a, 50.0f, 0.0f, 0.0f, 1.0f);
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/* And try the same rotation with a euler */
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graphene_euler_init_with_order (&euler, 40, -30, 50, GRAPHENE_EULER_ORDER_RYXZ);
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cogl_matrix_init_from_euler (&matrix_b, &euler);
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/* Verify that the matrices are approximately the same */
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COMPARE_MATRICES (&matrix_a, &matrix_b);
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/* Try applying the rotation from a euler to a framebuffer */
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cogl_framebuffer_identity_matrix (test_fb);
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cogl_framebuffer_rotate_euler (test_fb, &euler);
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memset (&matrix_b, 0, sizeof (matrix_b));
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cogl_framebuffer_get_modelview_matrix (test_fb, &matrix_b);
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COMPARE_MATRICES (&matrix_a, &matrix_b);
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/* FIXME: This needs a lot more tests! */
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if (cogl_test_verbose ())
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g_print ("OK\n");
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}
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