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16875340cb
This is unused API, and there are no plans to actually use it. Even if we want to use it in the future, we'll be fully Graphene and won't need this API anyway. https://gitlab.gnome.org/GNOME/mutter/merge_requests/458
69 lines
2.4 KiB
C
69 lines
2.4 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_MATRICES(a, b) \
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do { \
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COMPARE_FLOATS ((a)->xx, (b)->xx); \
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COMPARE_FLOATS ((a)->yx, (b)->yx); \
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COMPARE_FLOATS ((a)->zx, (b)->zx); \
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COMPARE_FLOATS ((a)->wx, (b)->wx); \
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COMPARE_FLOATS ((a)->xy, (b)->xy); \
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COMPARE_FLOATS ((a)->yy, (b)->yy); \
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COMPARE_FLOATS ((a)->zy, (b)->zy); \
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COMPARE_FLOATS ((a)->wy, (b)->wy); \
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COMPARE_FLOATS ((a)->xz, (b)->xz); \
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COMPARE_FLOATS ((a)->yz, (b)->yz); \
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COMPARE_FLOATS ((a)->zz, (b)->zz); \
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COMPARE_FLOATS ((a)->wz, (b)->wz); \
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COMPARE_FLOATS ((a)->xw, (b)->xw); \
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COMPARE_FLOATS ((a)->yw, (b)->yw); \
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COMPARE_FLOATS ((a)->zw, (b)->zw); \
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COMPARE_FLOATS ((a)->ww, (b)->ww); \
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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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