void
test_euler_quaternion (void)
{
CoglEuler euler;
CoglQuaternion quaternion;
CoglMatrix matrix_a, matrix_b;
/* Try doing the rotation with three separate rotations */
cogl_matrix_init_identity (&matrix_a);
cogl_matrix_rotate (&matrix_a, -30.0f, 0.0f, 1.0f, 0.0f);
cogl_matrix_rotate (&matrix_a, 40.0f, 1.0f, 0.0f, 0.0f);
cogl_matrix_rotate (&matrix_a, 50.0f, 0.0f, 0.0f, 1.0f);
/* And try the same rotation with a euler */
cogl_euler_init (&euler, -30, 40, 50);
cogl_matrix_init_from_euler (&matrix_b, &euler);
/* Verify that the matrices are approximately the same */
COMPARE_MATRICES (&matrix_a, &matrix_b);
/* Try converting the euler to a matrix via a quaternion */
cogl_quaternion_init_from_euler (&quaternion, &euler);
memset (&matrix_b, 0, sizeof (matrix_b));
cogl_matrix_init_from_quaternion (&matrix_b, &quaternion);
COMPARE_MATRICES (&matrix_a, &matrix_b);
/* Try applying the rotation from a euler to a framebuffer */
cogl_framebuffer_identity_matrix (test_fb);
cogl_framebuffer_rotate_euler (test_fb, &euler);
memset (&matrix_b, 0, sizeof (matrix_b));
cogl_framebuffer_get_modelview_matrix (test_fb, &matrix_b);
COMPARE_MATRICES (&matrix_a, &matrix_b);
/* And again with a quaternion */
cogl_framebuffer_identity_matrix (test_fb);
cogl_framebuffer_rotate_quaternion (test_fb, &quaternion);
memset (&matrix_b, 0, sizeof (matrix_b));
cogl_framebuffer_get_modelview_matrix (test_fb, &matrix_b);
COMPARE_MATRICES (&matrix_a, &matrix_b);
/* FIXME: This needs a lot more tests! */
if (cogl_test_verbose ())
g_print ("OK\n");
}
static RutTraverseVisitFlags
entitygraph_pre_paint_cb (RutObject *object,
int depth,
void *user_data)
{
RigPaintContext *paint_ctx = user_data;
RutPaintContext *rut_paint_ctx = user_data;
RutCamera *camera = rut_paint_ctx->camera;
CoglFramebuffer *fb = rut_camera_get_framebuffer (camera);
if (rut_object_is (object, RUT_INTERFACE_ID_TRANSFORMABLE))
{
const CoglMatrix *matrix = rut_transformable_get_matrix (object);
cogl_framebuffer_push_matrix (fb);
cogl_framebuffer_transform (fb, matrix);
}
if (rut_object_get_type (object) == &rut_entity_type)
{
RutEntity *entity = RUT_ENTITY (object);
RutObject *geometry;
CoglMatrix matrix;
if (!rut_entity_get_visible (entity) ||
(paint_ctx->pass == RIG_PASS_SHADOW && !rut_entity_get_cast_shadow (entity)))
return RUT_TRAVERSE_VISIT_CONTINUE;
geometry =
rut_entity_get_component (object, RUT_COMPONENT_TYPE_GEOMETRY);
if (!geometry)
{
if (!paint_ctx->engine->play_mode &&
object == paint_ctx->engine->light)
draw_entity_camera_frustum (paint_ctx->engine, object, fb);
return RUT_TRAVERSE_VISIT_CONTINUE;
}
cogl_framebuffer_get_modelview_matrix (fb, &matrix);
rig_journal_log (paint_ctx->engine->journal,
paint_ctx,
entity,
&matrix);
return RUT_TRAVERSE_VISIT_CONTINUE;
}
return RUT_TRAVERSE_VISIT_CONTINUE;
}
void
cogl_get_modelview_matrix (CoglMatrix *matrix)
{
cogl_framebuffer_get_modelview_matrix (cogl_get_draw_framebuffer (), matrix);
}