Zooming via HTML5 Canvas Context

Showing how to use transform methods on the HTML5 Canvas Context to selectively zoom in and out. Drag to pan. Click to zoom at that location. Shift-click to zoom out. Mousewheel up/down over the canvas to zoom in to/out from that location. By redrawing the canvas at different scales the strokes remain smooth during zooming. For example, zoom in on the earring or circle on the forehead to see fine