VCS2D Animation Speedup

[chaosphere2112]

Big speedup of animation in 2D– just had to stop saving PNGs while running the animation, and removed some redundant Render calls.

@doutriaux1 @williams13 @aashish24

[doutriaux1]

@chaosphere2112 that works great! Thank you! The one thing though is that it kills the zoom feature.
@williams13 do we want to keep it? @williams13 the other option is to turn on pngs (slow) when zooming? Your thoughts.

[williams13]

Let's not do the zooming for this release. We will revisit for the next release.

[aashish24]

@chaosphere2112 when does it write the PNGs then?

[chaosphere2112]

@aashish24 It writes the PNGs when you call canvas.animate.save("path.mp4"); takes longer to save out the animation, but we get >30FPS when running, so it seems like a useful tradeoff; @williams13 and @doutriaux1 indicated that the most common use case is to just run the animation to take a look at it, and then to manually generate PNGs in which you manipulate a variety of things, then call canvas.ffmpeg on those PNGs.

[aashish24]

okay sounds good. Earlier we had a diffirirent strategy as we suggested not to write file while we run the animation. I totally support this approach.

[doutriaux1]

@williams13 go ahead and rebuild