/*
* $Id$
*
* Copyright (C) 2003-2014 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.test.gui;
import java.awt.Color;
import java.awt.Component;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.AffineTransform;
import java.awt.geom.GeneralPath;
import org.jnode.driver.video.util.Curves;
/**
* @author epr
*/
public class QuadCurveTest {
public static void main(String[] args)
throws Exception {
Frame wnd = new Frame();
try {
wnd.setSize(600, 400);
wnd.add(new TestComponent());
wnd.setVisible(true);
Thread.sleep(5000);
wnd.setVisible(false);
} finally {
wnd.dispose();
}
}
@SuppressWarnings("serial")
static class TestComponent extends Component {
public void paint(Graphics g) {
System.out.println("Paint called");
paintComponent(g);
}
private void paintComponent(Graphics g) {
final int w = getWidth();
final int h = getHeight();
g.setColor(Color.CYAN);
final AffineTransform tx = new AffineTransform();
tx.translate(50, h / 2);
tx.scale(0.25, -0.25);
final GeneralPath gp = new GeneralPath();
gp.moveTo(w, 0);
gp.quadTo(w, h, 0, h);
gp.closePath();
final Graphics2D g2d = (Graphics2D) g;
g2d.draw(gp);
g.setColor(Color.RED);
drawQuadCurve(g, w, 0, w, h, 0, h);
}
protected void drawQuadCurve(Graphics g, double x0, double y0, double x1, double y1, double x2, double y2) {
double[] points = new double[62];
Curves.calculateQuadCurve(x0, y0, x1, y1, x2, y2, points);
for (int i = 0; i < points.length - 2; i += 2) {
g.drawLine((int) points[i], (int) points[i + 1], (int) points[i + 2], (int) points[i + 3]);
}
}
}
}