Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsMandala Ornament with Cardioid, Circles and Cloverhttp://demonstrations.wolfram.com/MandalaOrnamentWithCardioidCirclesAndClover/]]>http://demonstrations.wolfram.com/MandalaOrnamentWithCardioidCirclesAndClover/