copyFrom method
Copy the quad from other into this.
Implementation
void copyFrom(Quad other) {
  _point0.setFrom(other._point0);
  _point1.setFrom(other._point1);
  _point2.setFrom(other._point2);
  _point3.setFrom(other._point3);
}Copy the quad from other into this.
void copyFrom(Quad other) {
  _point0.setFrom(other._point0);
  _point1.setFrom(other._point1);
  _point2.setFrom(other._point2);
  _point3.setFrom(other._point3);
}