Re: a proper whiteout function

[Paul Morris]

Hi Carl, Wilbert, David N, Kieren, Abraham,

Thanks for all the feedback and suggestions.  I’m attaching a new revision.

- Original spacing is maintained.  Thanks David and Carl for the tips on how to 
do this.

- Optional parameters, with fallback defaults, for offset, color, 
angle-increments, radial-increments.  I went with Carl’s suggestions, but made 
them optional.  The stencil argument now comes first.

- Prevents zero or negative angle- and radial- increments that would cause an 
infinite loop.

- First pass at a doc string based on Carl’s descriptions.


Let me know what you think and then I’ll go ahead and submit a patch for 
review.  BTW, what’s a good default for offset?

Cheers,
-Paul

stencil-whiteout-outline2.ly
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