Comment by eduardordm

Why don't you just find two mid-points based on the last and current positions and use bezier? It should be absurdly faster.

Example: x = (p1.x + p2.x) * 0.5; y = (p1.y + p2.y) * 0.5;

Implementation (easily portable to html5):

https://github.com/eduardordm/wireframeapp/blob/master/wiref...