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cogl/matrix: Init translation matrix using Graphene

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Georges Basile Stavracas Neto 2019-02-27 16:13:53 -03:00
parent 3e02a89c2a
commit 8e2658a601
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GPG Key ID: 886C17EE170D1385
1 changed files with 8 additions and 25 deletions
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33
cogl/cogl/cogl-matrix.c
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@ -1627,37 +1627,20 @@ cogl_matrix_init_identity (CoglMatrix *matrix)
_COGL_MATRIX_DEBUG_PRINT (matrix);
}
/*
* Set a matrix to the (tx, ty, tz) translation matrix.
*
* @matix matrix.
* @tx x coordinate of the translation vector
* @ty y coordinate of the translation vector
* @tz z coordinate of the translation vector
*/
static void
_cogl_matrix_init_translation (CoglMatrix *matrix,
float tx,
float ty,
float tz)
{
memcpy (matrix, identity, 16 * sizeof (float));
matrix->xw = tx;
matrix->yw = ty;
matrix->zw = tz;
matrix->type = COGL_MATRIX_TYPE_3D;
matrix->flags = MAT_FLAG_TRANSLATION | MAT_DIRTY_INVERSE;
}
void
cogl_matrix_init_translation (CoglMatrix *matrix,
float tx,
float ty,
float tz)
{
_cogl_matrix_init_translation (matrix, tx, ty, tz);
graphene_matrix_t m;
graphene_matrix_init_translate (&m, &GRAPHENE_POINT3D_INIT (tx, ty, tz));
graphene_matrix_to_cogl_matrix (&m, matrix);
matrix->type = COGL_MATRIX_TYPE_3D;
matrix->flags = MAT_FLAG_TRANSLATION | MAT_DIRTY_INVERSE;
_COGL_MATRIX_DEBUG_PRINT (matrix);
}