code: public void quadToPoint(float controlX, float controlY, float toX, float toY) {
          PathQuadOperation operation = new PathQuadOperation();
          operation.controlX = controlX;
          operation.controlY = controlY;
          operation.endX = toX;
          operation.endY = toY;
          operations.add(operation);
  
          endX = toX;
          endY = toY;
      }
docs: Add a quad to the ShapePath.
  
  @param controlX the control point x of the arc.
  @param controlY the control point y of the arc.
  @param toX      the end x of the arc.
  @param toY      the end y of the arc.