Proceedings of the 28th annual conference on Computer graphics and interactive techniques
Shadow algorithms for computer graphics
SIGGRAPH '77 Proceedings of the 4th annual conference on Computer graphics and interactive techniques
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I borrow the concept of a stencil volume from shadow volumes and apply it to the simulation of a fluid spreading on a surface, without resorting to a texture-based approach. I introduce stencil paint volumes that grow in real-time using a physically-based system. Points inside the paint volumes are rendered in color, and those outside in black-and-white. This mimics the known artistic effect of a monochrome image with colored highlights to emphasize certain areas, found in painting, film and other media.