app.java

java编的一个火焰程序

package skyrocket;

import java.applet.Applet;
import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class App extends Applet {




public void init() {
	Canvas canvas = new Canvas();
	canvas.setSize( getWidth(), getHeight() );
	add( canvas );
	canvas.gravity = Double.parseDouble( getParameter("gravity") ) / 100;
	canvas.damp = Double.parseDouble( getParameter("damp") ) / 100;
	canvas.skyrocketVelocity = Double.parseDouble( getParameter("skyrocketVelocity") ) / -1;
	canvas.skyrocketWidth = Integer.parseInt( getParameter("skyrocketWidth") );
	canvas.skyrocketHeight = Integer.parseInt( getParameter("skyrocketHeight") );
	canvas.pieceNumber = Integer.parseInt( getParameter("pieceNumber") );
	canvas.pieceInitialVelocity = Double.parseDouble( getParameter("pieceInitialVelocity") );
	canvas.pieceDarkerFactor = Double.parseDouble( getParameter("pieceDarkerFactor") ) / 100;
	canvas.pieceWidth = Integer.parseInt( getParameter("pieceWidth") );
	canvas.pieceHeight = Integer.parseInt( getParameter("pieceHeight") );
	canvas.traceDarkerFactor = Double.parseDouble( getParameter("traceDarkerFactor") ) / 100;
	canvas.init();
}

public static void main( String[] args ) throws Exception {

	Frame frame = new Frame();
	frame.addWindowListener( new WindowAdapter() {
		public void windowClosing( WindowEvent e ) {
			System.exit(0);
		}
	} );

	Canvas canvas = new Canvas();
	canvas.setSize( 400, 400 );
	frame.add( canvas );
	frame.pack();
	frame.setLocationRelativeTo( null );
	frame.show();

	canvas.gravity = 1.0;
	canvas.damp = 0.75;
	canvas.skyrocketVelocity = -82;
	canvas.skyrocketWidth = 4;
	canvas.skyrocketHeight = 8;
	canvas.pieceNumber = 200;
	canvas.pieceInitialVelocity = 72;
	canvas.pieceDarkerFactor = 0.90;
	canvas.pieceWidth = 1;
	canvas.pieceHeight = 2;
	canvas.traceDarkerFactor = 0.70;
	canvas.frameDelay = 50;

	canvas.init();

}




}