Question

I am trying to flip drawing drawn on a canvas. Please refer to the code at http://jsfiddle.net/hhzhR/1/. Please notice that the code there draws a ‘L’. If I uncomment the code ctx.scale(1, -1); then nothing is rendered.

Answer 1

When you flip the canvas, the path gets drawn out of the canvas region. You have to translate the canvas too:

ctx.translate(0, canvas.height);

like this example.