Filtered Bright Red and Dark Greenish Cyan Yin-Yang
by AdamStanislav - uploaded on June 11, 2016, 4:24 am
The entire graphic is drawn as a single path filled with greenish cyan. The other half, usually shown in white is created here as a hole in the path, but we have placed a red circle behind it. That means it is completely transparent, and has the red color its background has. To achieve this, not just with SVG but with other vector formats, any black portion of the path is drawn counterclockwise, any “white” portion clockwise. To that we added the WhateverTheHeckThisIs SVG filter.
Also, this graphic is taking advantage of the kappa constant described in my e-book Bézier Circles and other shapes, freely downloadable from www.smashwords.com/books/view/483578 (kappa = 4 * (sqrt(2) - 1) / 3).