//--------------------------------------------------------------------------------------------------
public bool ScreenToPoint(Pln plane, int screenX, int screenY, out Pnt resultPnt)
{
try
{
double xv = 0, yv = 0, zv = 0;
double vx = 0, vy = 0, vz = 0;
V3dView.Convert(screenX, screenY, ref xv, ref yv, ref zv);
V3dView.Proj(ref vx, ref vy, ref vz);
gp_Lin line = new gp_Lin(new Pnt(xv, yv, zv), new Dir(vx, vy, vz));
IntAna_IntConicQuad intersection = new IntAna_IntConicQuad(line, plane, Precision.Angular(), 0, 0);
if (intersection.IsDone() &&
!intersection.IsParallel() &&
intersection.NbPoints() > 0)
{
resultPnt = intersection.Point(1);
return(true);
}
}
catch (Exception)
{
Debug.Assert(false);
}
resultPnt = new Pnt();
return(false);
}
