Draw simple shape on ofPixels without opengl context

Hi guys,

A small utility for drawing simple shape on ofPixels without Opengl context.

it can be useful when you have to draw and save images
within a thread or in the main thread but without a window (ofAppNoWindow).

useful for multithreaded applications where each thread
has to draw simple shapes over an image and then save to the filesystem.

source:

sample:

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