public void pathChanged(GeoPoint P) {
PathParameter pp = P.getPathParameter();
if (pp.t < 0.0) {
pp.t = 0;
}
// calc point for given parameter
P.x = startPoint.inhomX + pp.t * y;
P.y = startPoint.inhomY - pp.t * x;
P.z = 1.0;
}
/*
* Path interface
*/
public void pointChanged(GeoPoint P) {
super.pointChanged(P);
// ensure that the point doesn't get outside the ray
// i.e. ensure 0 <= t <= 1
PathParameter pp = P.getPathParameter();
if (pp.t < 0.0) {
P.x = startPoint.x;
P.y = startPoint.y;
P.z = startPoint.z;
pp.t = 0.0;
}
}