glGetAffineTransformationMetaAsNdc
fn
void glGetAffineTransformationMetaAsNdc(gstvideo.video_affine_transformation_meta.VideoAffineTransformationMeta meta, ref float[] matrix)Retrieves the stored 4x4 affine transformation matrix stored in meta in NDC coordinates. if meta is NULL, an identity matrix is returned.
NDC is a left-handed coordinate system
- x - [-1, 1] - +ve X moves right
- y - [-1, 1] - +ve Y moves up
- z - [-1, 1] - +ve Z moves into
Parameters
meta | a #GstVideoAffineTransformationMeta |
matrix | result of the 4x4 matrix |