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//********************************************************* // Author: D.S. Malik // // Program: Drawing a Sierpinski Gasket // Given the order of a Sierpinski Gasket, this program // draws a Sierpinski Gasket of that order. //********************************************************* / import java.awt.*; import javax.swing.*; i public class SierpinskiGasket extends JApplet { int level = 0; public void init() { String levelStr = JOptionPane.showInputDialog ("Enter the recursion depth: "); level = Integer.parseInt(levelStr); } public void paint(Graphics g) { Point pointOne = new Point(60, 160); Point pointTwo = new Point(220, 160); Point pointThree = new Point(140, 20); drawSierpinski(g, level, pointOne, pointTwo,

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Unformatted text preview: pointThree); } private void drawSierpinski(Graphics g, int lev, Point p1, Point p2, Point p3) { Point midP1P2; Point midP2P3; Point midP3P1; if (lev > 0) { g.drawLine(p1.x, p1.y, p2.x, p2.y); g.drawLine(p2.x, p2.y, p3.x, p3.y); g.drawLine(p3.x, p3.y, p1.x, p1.y); midP1P2 = midPoint(p1, p2); midP2P3 = midPoint(p2, p3); midP3P1 = midPoint(p3, p1); drawSierpinski(g, lev - 1, p1, midP1P2, midP3P1); drawSierpinski(g, lev - 1, p2, midP2P3, midP1P2); drawSierpinski(g, lev - 1, p3, midP3P1, midP2P3); } } private Point midPoint(Point pOne, Point pTwo) { Point mid = new Point((pOne.x + pTwo.x) / 2, (pOne.y + pTwo.y) / 2); return mid; } }...
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