/** * graphene_matrix_init_look_at: * @m: a #graphene_matrix_t * @eye: the vector describing the position to look from * @center: the vector describing the position to look at * @up: the vector describing the world's upward direction; usually, * this is the graphene_vec3_y_axis() vector * * Initializes a #graphene_matrix_t so that it positions the "camera" * at the given @eye coordinates towards an object at the @center * coordinates. The top of the camera is aligned to the direction * of the @up vector. * * Returns: (transfer none): the initialized matrix * * Since: 1.0 */ graphene_matrix_t * graphene_matrix_init_look_at (graphene_matrix_t *m, const graphene_vec3_t *eye, const graphene_vec3_t *center, const graphene_vec3_t *up) { graphene_simd4x4f_init_look_at (&m->value, eye->value, center->value, up->value); return m; }
graphene_matrix_t * graphene_matrix_init_look_at (graphene_matrix_t *m, const graphene_vec3_t *eye, const graphene_vec3_t *center, const graphene_vec3_t *up) { g_return_val_if_fail (m != NULL, NULL); graphene_simd4x4f_init_look_at (&m->value, eye->value, center->value, up->value); return m; }