gaacanvas.java

Java实现的遗传算法工具集：GA Playground

import java.awt.*;
import java.applet.*;

class GaaCanvas extends Canvas
{
	
	GaaProblem problem;
	GaaPopulation pop;
	GaaFunction function;
	
	Graphics Gra;
	Color color;
	boolean first;
	boolean reset;


	public GaaCanvas(GaaProblem pr, GaaPopulation pl, GaaFunction fn)	{

		super();
		
		pop = pl;
		problem = pr;
		function = fn;
		
		setBackground(Color.white);
		setForeground(Color.black);
		color = Color.red;
		first = true;
		reset = false;

	}



	public void clear() {

		reset = true;
		repaint();

	}


	public void paint(Graphics g) {

		int i;
		
		if (reset) {
			g.setColor(Color.white);
			g.fillRect(0,0,size().width,size().height);
			reset = false;
			return;
		}
		
		function.draw(g,pop.chroms[0],size());

	}


	public void update(Graphics g) {
		
		if (function.drawMode == 1) {
			g.setColor(getBackground());
			g.fillRect(0,0,size().width,size().height);
			g.setColor(getForeground());
		}
		
		paint(g);
		
	}

	Graphics getGra() {

		return this.getGraphics();
	}
	
}