private static KeyValuePair <Point, bool> Calculate2DPoint(Viewport3D viewport, Matrix3D cameraToObject, Matrix3D worldToObject, Matrix matrix, Point3D point3D)
{
double num = 0.0;
ProjectionCamera projectionCamera = viewport.Camera as ProjectionCamera;
if (projectionCamera != null)
{
num = projectionCamera.NearPlaneDistance;
}
if (cameraToObject.Transform(point3D).Z > -num - 1E-06)
{
return(new KeyValuePair <Point, bool>(new Point(), false));
}
return(new KeyValuePair <Point, bool>(matrix.Transform(AdornedToolBehavior3D.Point3DInViewport3D(viewport, worldToObject, point3D)), true));
}
