calcRationalCurveDerivatives function

List<Vector3> calcRationalCurveDerivatives(List<Vector4> pDers)

Implementation

List<Vector3> calcRationalCurveDerivatives(List<Vector4> pDers ) {
	final nd = pDers.length;
	final aDers = [];
	final wders = [];

	for ( int i = 0; i < nd; ++ i ) {
		final point = pDers[ i ];
		aDers[ i ] = Vector3( point.x, point.y, point.z );
		wders[ i ] = point.w;
	}

	final List<Vector3> ck = [];

	for ( int k = 0; k < nd; ++ k ) {
		final Vector3 v = aDers[ k ].clone();
		for ( int i = 1; i <= k; ++ i ) {
			v.sub( ck[ k - i ].clone().scale( calcKoverI( k, i ) * wders[ i ] ) );
		}
		ck[ k ] = v.divideScalar( wders[ 0 ] );
	}

	return ck;
}