From: Jan-Klaas Kollhof <keyjaque@yahoo.com>

Date: Sat, 3 Apr 2004 08:28:22 -0800 (PST)

Message-ID: <20040403162822.38948.qmail@web60109.mail.yahoo.com>

To: www-svg@w3.org

Date: Sat, 3 Apr 2004 08:28:22 -0800 (PST)

Message-ID: <20040403162822.38948.qmail@web60109.mail.yahoo.com>

To: www-svg@w3.org

Hi, I was reading about the superformula: http://astronomy.swin.edu.au/~pbourke/curves/supershape/ The algorithm is quite simple so I thought I implement it in SVG: http://jan.kollhof.net/projects/svg/playground/superformula.svg I added some functionality to use a superformula path element in the svg document. This is just a namespaced element which gets replaced with a path element that shows a path for the superformula values using the parameters given as attributes. <sf:path x="150" y="50" a="1" b="1" m="0.16666667" n1="0.5" n2="0.5" n3="0.5" phi-start="0" phi-end="12" r="50" steps="500" fill="red" stroke="black" /> where m, n1, n2, n3, a, b are parameters to the formula. phi-start and phi-end are the range for the formula. They are multiplied by Py. r is the scaling of the path and steps is the calculation steps to use to calculate the points of the resulting path. x and y are just the offsets for the center. the rest of the attributes are just copied to the resulting path element. What would be realy nice is to have the SVG path extended to use the superformula. <path d="S 0.16667 0.5 0.5 0.5 1 1 0 12 50" ... /> or a new element :) Jan __________________________________ Do you Yahoo!? Yahoo! Small Business $15K Web Design Giveaway http://promotions.yahoo.com/design_giveaway/Received on Saturday, 3 April 2004 11:28:58 UTC

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