import waba.ui.*;

import waba.fx.*;



/* ラインアートのJavaプログラム */

public class MainClass extends MainWindow

{

	final int DISP_X = 128;

	final int DISP_Y = 88;



	int[] p = { 31, 41, 59, 26 };

	int[] v = { 1, -2, -2, 1 };

	int[] m = { DISP_X, DISP_Y, DISP_X, DISP_Y };



	public void onPaint(Graphics g) {

		int i, j;



		for(i = 0; i < 4; i++) {

			p[i] += v[i];

			if(v[i] < 0) {

				if(p[i] <= 0) {

					p[i] = 0;

					v[i] = -v[i];

				}

			} else {

				if(p[i] >= m[i] - 1) {

					p[i] = m[i] - 1;

					v[i] = -v[i];

				}

			}

		}



		g.setColor(0, 0, 0);

		int[] pp = { p[0], p[1], p[2], p[3] };

		int[] vv = { v[0], v[1], v[2], v[3] };

		for(j = 0; j < 32; j++) {

			if(j < 10) {

				g.setColor(255, 255, 255);

			} else if(j < 20) {

				g.setColor(150, 150, 150);

			} else {

				g.setColor(85, 85, 85);

			}

			g.drawLine(pp[0], pp[1], pp[2], pp[3]);

			for(i = 0; i < 4; i++) {

				pp[i] += vv[i];

				if(vv[i] < 0) {

					if(pp[i] <= 0) {

						pp[i] = 0;

						vv[i] = -vv[i];

					}

				} else {

					if(pp[i] >= m[i] - 1) {

						pp[i] = m[i] - 1;

						vv[i] = -vv[i];

					}

				}

			}

		}

	}

}