/*
* (non-Javadoc)
*
* @see math.geom2d.Shape2D#transform(math.geom2d.AffineTransform2D)
*/
public EllipseArc2D transform(AffineTransform2D trans) {
// transform supporting ellipse
Ellipse2D ell = ellipse.transform(trans);
// ensure ellipse is direct
if (!ell.isDirect()) ell = ell.reverse();
// Compute position of end points on the transformed ellipse
double startPos = ell.project(this.firstPoint().transform(trans));
double endPos = ell.project(this.lastPoint().transform(trans));
// Compute the new arc
boolean direct = !(angleExtent > 0 ^ trans.isDirect());
return new EllipseArc2D(ell, startPos, endPos, direct);
}
public double project(Point2D point) {
double angle = ellipse.project(point);
// Case of an angle contained in the ellipse arc
if (this.containsAngle(angle)) {
if (angleExtent > 0) return Angle2D.formatAngle(angle - startAngle);
else return Angle2D.formatAngle(startAngle - angle);
}
// return either 0 or T1, depending on which extremity is closer.
double d1 = this.firstPoint().distance(point);
double d2 = this.lastPoint().distance(point);
return d1 < d2 ? 0 : abs(angleExtent);
}