Inconsistent Strokes (fix inside)

[aherbig]

Hey,

I ran into an issue where the strokes of some pathes varied from frame to frame. Suddenly the pathes got twice as wide. After checking out your code i narrowed the culprit down to the different implementation of "sTracePathStrokeSimple" and "sTracePathStrokeAdvanced" in your "sStrokePath" function.

Before the sTracePathStrokeSimple gets called, you transform the context by calling: CGContextConcatCTM(context, state->affineTransform);
In the routine that calls sTracePathStrokeAdvanced there is no such context-transform, because all point-transformations happen in the sTracePathStrokeAdvanced function.

The problem now is that the Context is not getting scaled for the CGContextDrawPath calls if the code enters the sTracePathStrokeAdvanced routine.

There is a simple fix:
Add the CGContextConcatCTM(context, state->affineTransform); after sTracePathStrokeAdvanced gets called. Like this:

if (isHairline || shouldRound || noScale) {
...
sTracePathStrokeAdvanced(state, operations, floats, lineWidth, state->affineTransform, isHairline, shouldRound, [lineStyle closesStroke]);
CGContextConcatCTM(context, state->affineTransform);
} else {
CGContextConcatCTM(context, state->affineTransform);
sTracePathStrokeSimple(state, operations, floats, [lineStyle closesStroke]);
}