//--------------------------------------------------------------------------------------------------
public Ax1 ViewAxis(int screenX, int screenY)
{
double px = 0, py = 0, pz = 0;
V3dView.Convert(screenX, screenY, ref px, ref py, ref pz);
return(new Ax1(new Pnt(px, py, pz), GetViewDirection()));
}
//--------------------------------------------------------------------------------------------------
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);
}
//--------------------------------------------------------------------------------------------------
public bool PointToScreen(Pnt pnt, out int screenX, out int screenY)
{
try
{
int x = 0, y = 0;
V3dView.Convert(pnt.X, pnt.Y, pnt.Z, ref x, ref y);
screenX = x;
screenY = y;
return(true);
}
catch (Exception)
{
Debug.Assert(false);
}
screenX = 0;
screenY = 0;
return(false);
}
//--------------------------------------------------------------------------------------------------
#endregion
#region Screen Space Conversions
public bool ScreenToPoint(int screenX, int screenY, out Pnt resultPnt)
{
try
{
var viewPlane = GetViewPlane();
double x = 0, y = 0, z = 0;
V3dView.Convert(screenX, screenY, ref x, ref y, ref z);
Pnt convertedPoint = new Pnt(x, y, z);
Pnt2d convertedPointOnPlane = ProjLib.Project(viewPlane, convertedPoint);
resultPnt = ElSLib.Value(convertedPointOnPlane.X, convertedPointOnPlane.Y, viewPlane);
return(true);
}
catch (Exception)
{
Debug.Assert(false);
}
resultPnt = Pnt.Origin;
return(false);
}
