Explain window-to-viewport transformation. - Graphics

Explain window-to-viewport transformation.

- After transferring the object descriptions to the viewing reference frame, window extents are selected to view coordinates.

- View ports are selected in normalized coordinates.

- Later, object descriptions are transferred to normalized device coordinates.

- When the coordinate position is at the middle of the window, the object is displayed at the center of the viewport.

- Object descriptions are transferred to device placement coordinates using transformation which maintains same relative placement of objects.