LACS01-PolarTester.java

/**
PolarTester.java    MrG 2012.0529
purpose:    test graphics.jar by making polar graphs!
required files: PolarTester.java            main class
        graphics.jar                utility classes
translator: javac -classpath .:./graphics.jar PolarTester.java
interperter:    java -classpath .:./graphics.jar PolarTester
*/
public class PolarTester
{
    public static void main(String[] args)
    {
        StdDraw.setXscale(-1,+1);
        StdDraw.setYscale(-1,+1);

        double x0 = 0;
        double y0 = 0;

        for(double t=0.0; t<=360.0; t+=0.1)
        {
            double theta = Math.toRadians(t);
            double r = Math.sin(3*theta);
            double x1 = r*Math.cos(theta);
            double y1 = r*Math.sin(theta);
            StdDraw.line(x0,y0,x1,y1);
            x0=x1;
            y0=y1;
        }
    }
}