makePlaneProjection function Null safety

Matrix4 makePlaneProjection (
  1. Vector3 planeNormal,
  2. Vector3 planePoint
)

Returns a transformation matrix that transforms points onto the plane specified with planeNormal and planePoint.

Implementation

Matrix4 makePlaneProjection(Vector3 planeNormal, Vector3 planePoint) {
  final v = Vector4(planeNormal.storage[0], planeNormal.storage[1],
      planeNormal.storage[2], 0.0);
  final outer = Matrix4.outer(v, v);
  var r = Matrix4.zero();
  r = r - outer;
  final scaledNormal = planeNormal.scaled(dot3(planePoint, planeNormal));
  final T = Vector4(scaledNormal.storage[0], scaledNormal.storage[1],
      scaledNormal.storage[2], 1.0);
  r.setColumn(3, T);
  return r;
}