public Tuple<Point3D, Vector3D, Vector3D, Autodesk.Navisworks.Api.ViewpointProjection, double> GetViewCoordinates(VisualizationInfo viewport)
{
try
{
double units = GetGunits();
Point3D Position = new Point3D();
Vector3D VectorUp = new Vector3D();
Vector3D VectorTo = new Vector3D();
ViewpointProjection vp = ViewpointProjection.Perspective;
double zoom = 0;
if (viewport.OrthogonalCamera != null)
{
if (viewport.OrthogonalCamera.CameraViewPoint == null || viewport.OrthogonalCamera.CameraUpVector == null || viewport.OrthogonalCamera.CameraDirection == null)
return null;
vp = ViewpointProjection.Orthographic;
zoom = units * viewport.OrthogonalCamera.ViewToWorldScale;
Position = GetXYZ(viewport.OrthogonalCamera.CameraViewPoint.X, viewport.OrthogonalCamera.CameraViewPoint.Y, viewport.OrthogonalCamera.CameraViewPoint.Z);
VectorUp = GetXYZ(viewport.OrthogonalCamera.CameraUpVector.X, viewport.OrthogonalCamera.CameraUpVector.Y, viewport.OrthogonalCamera.CameraUpVector.Z).ToVector3D().Normalize();
VectorTo = GetXYZ(viewport.OrthogonalCamera.CameraDirection.X, viewport.OrthogonalCamera.CameraDirection.Y, viewport.OrthogonalCamera.CameraDirection.Z).ToVector3D().Normalize();
}
else if (viewport.PerspectiveCamera != null)
{
if (viewport.PerspectiveCamera.CameraViewPoint == null || viewport.PerspectiveCamera.CameraUpVector == null || viewport.PerspectiveCamera.CameraDirection == null)
return null;
zoom = viewport.PerspectiveCamera.FieldOfView;
Position = GetXYZ(viewport.PerspectiveCamera.CameraViewPoint.X, viewport.PerspectiveCamera.CameraViewPoint.Y, viewport.PerspectiveCamera.CameraViewPoint.Z);
VectorUp = GetXYZ(viewport.PerspectiveCamera.CameraUpVector.X, viewport.PerspectiveCamera.CameraUpVector.Y, viewport.PerspectiveCamera.CameraUpVector.Z).ToVector3D().Normalize();
VectorTo = GetXYZ(viewport.PerspectiveCamera.CameraDirection.X, viewport.PerspectiveCamera.CameraDirection.Y, viewport.PerspectiveCamera.CameraDirection.Z).ToVector3D().Normalize();
}
else
return null;
return new Tuple<Point3D, Vector3D, Vector3D, ViewpointProjection, double>(Position, VectorUp, VectorTo, vp, zoom);
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
return null;
}
private Point3D GetXYZ(double x, double y, double z)
