【转帖】how can i draw only the scenes that is shown
 

how can i draw only the scenes that is shown?
how can i draw only the scenes that is shown?
dwgdirect draws all the scenes even the one hidden behind the screen.
how can i draw only the scenes that is shown?
dwgdirect's example graphics systems (gdi, opengl) currently don't apply viewport clipping. implement your own gs based on our samples to add this feature (for more info about clipping see odvectorizer example).