ViewportToWorld
Namespace: Digi21.DigiNG.Cameras
Assembly: Digi21.DigiNG
Converts a point in OpenGL window coordinates to drawing file coordinates.
public Point3D ViewportToWorld(Point3D viewport)
Parameters
| Parameter | Description |
|---|---|
viewport |
Point3D with X and Y in OpenGL window pixels (origin at the bottom-left corner) and Z as depth between 0 and 1. |
Returns
Point3D in drawing file coordinates. If the point cannot be converted, returns Position.
Notes
The method converts the point using gluUnProject and the view, projection and viewport matrices of the OpenGL context active on the calling thread, then adds Position to the result. Of the camera properties, it uses only Position. The result corresponds to the drawing window only if the method is called on the thread with that window's OpenGL context active.
The inverse method is WorldToViewport.