On Jun 29, 2004, at 4:25 PM, Chris Barker wrote:
Todd Miller wrote:
Yes. What I most want to do is a 50000 point drawlines, similar to what you profiled. Friends are fine too.
Actually, it was someone else that did the profiling, but here is a sample, about as simple as I could make it.
It draws an N point line and M points. At the moment, it is using Numeric for the points, and numarray for the lines. Numeric is MUCH faster (which is the whole point of this discussion). Otherwise, it takes about the same amount of time to draw the lines as the points.
Another note: if use the tolist() method in the numarray first, it's much faster also:
If you are going to move lots of lines and points, I would recommend pushing this stuff through PyOpenGL with array objects and vertex objects. Letting OpenGL handle the transformations, clipping, movement and iteration in hardware stomps all over even the best written C code. Most UI toolkits have some form of OpenGL widget.
For lots of the code I have written, even Mesa (the open-souce software OpenGL renderer) was fast enough, and not having to write all of the display transformation code by hand was a huge win even when the speed was somewhat lagging.