I'm trying to make a simple conversion from a model (the dimension z is always very short, so it's like it's 2-dimensional) loaded with opencascade to a simple bitmap. The pixels are either white (nothing, blank) or black (filled, the modell is here). The bitmap is 1024x768 pixels big. What I was suggested is to make an intersection between a small box and the model for each pixel. If the intersection contains something, I write a black pixel, else white pixel. But I believe this will take very long to execute. You guys are brilliant, so do you have any other idea?