public static bool Point2DtoPoint3D(Viewport3D viewport, Point ptIn, out LineRange range)
{
range = new LineRange();
Point3D pointIn = new Point3D(ptIn.X, ptIn.Y, 0);
Matrix3D matxViewport = GetViewportTransform(viewport);
Matrix3D matxCamera = GetCameraTransform(viewport);
if (!matxViewport.HasInverse)
{
return(false);
}
if (!matxCamera.HasInverse)
{
return(false);
}
matxViewport.Invert();
matxCamera.Invert();
Point3D pointNormalized = matxViewport.Transform(pointIn);
pointNormalized.Z = 0.01;
Point3D pointNear = matxCamera.Transform(pointNormalized);
pointNormalized.Z = 0.99;
Point3D pointFar = matxCamera.Transform(pointNormalized);
range = new LineRange(pointNear, pointFar);
return(true);
}
private Point3D GetPoint3D(Point pt, Viewport3D viewportArg)
{
Point3D point3D = new Point3D();
var range = new LineRange();
var isValid = ViewportInfo.Point2DtoPoint3D(viewportArg, pt, out range);
if (isValid)
{
point3D = range.PointFromZ(0);
}
return point3D;
}
public static bool Point2DtoPoint3D(Viewport3D viewport, Point ptIn, out LineRange range)
{
range = new LineRange();
Point3D pointIn = new Point3D(ptIn.X, ptIn.Y, 0);
Matrix3D matxViewport = GetViewportTransform(viewport);
Matrix3D matxCamera = GetCameraTransform(viewport);
if (!matxViewport.HasInverse)
return false;
if (!matxCamera.HasInverse)
return false;
matxViewport.Invert();
matxCamera.Invert();
Point3D pointNormalized = matxViewport.Transform(pointIn);
pointNormalized.Z = 0.01;
Point3D pointNear = matxCamera.Transform(pointNormalized);
pointNormalized.Z = 0.99;
Point3D pointFar = matxCamera.Transform(pointNormalized);
range = new LineRange(pointNear, pointFar);
return true;
}
public override IEditor StartEdit(Point startPos, Petzold.Media3D.LineRange startRay)
{
return(new Editor(startPos, startRay, this));
}
