?? spiral.qs
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/** * Author: John K. Emmons * $Id: spiral.qs 921 2004-12-19 00:31:22Z andrew $ * * Draws a logarithmical spiral. */function main() { var doc; // current document var view; // current document view var line; // line to add var i; // counter var x; // x starting point var y; // y starting point y var x1=71; // x ending point var y1=70; // y ending point var r; // radius var theta=0.10; // angle in radians doc = new Document; view = new View; for (i=0; i<=2500; i++) { with(Math) { r=exp(theta*0.185); // numerical values are for moditying a reference // position and scaling x=r*cos(theta)+70; y=r*sin(theta)+70; } l = new Line(doc,x,y,x1,y1); doc.addEntity(l); x1=x; y1=y; // angle increment theta=theta+0.01; } view.redraw();}
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