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| /*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package javaapplication1;
import java.awt.BasicStroke;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.Paint;
import java.awt.Point;
import java.awt.RenderingHints;
import java.awt.Stroke;
import java.awt.geom.CubicCurve2D;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.util.LinkedList;
import java.util.List;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
/**
*
* @author Fabrice
*/
public class Main extends JComponent {
List<Point> aaa = new LinkedList<Point>(); // Vector contenant des points
Ellipse2D circle = new Ellipse2D.Double();
private Paint circleBackground = Color.RED;
Line2D line = new Line2D.Double();
private Paint lineForeground = Color.GRAY;
private Stroke lineStroke = new BasicStroke(0.5f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND, 0, new float[]{5, 5}, 0);
CubicCurve2D curve = new CubicCurve2D.Double();
private Paint curveForeground = Color.BLACK;
private Stroke curveStroke = new BasicStroke(1f);
public Main() {
aaa.add(new Point(100, 150));
aaa.add(new Point(150, 50));
aaa.add(new Point(250, 125));
aaa.add(new Point(400, 0));
aaa.add(new Point(550, 150));
aaa.add(new Point(700, 100));
aaa.add(new Point(800, 50));
aaa.add(new Point(850, 50));
}
/**
* {@inheritDoc}
*/
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Dimension size = getSize();
Insets insets = getInsets();
Graphics2D g2d = (Graphics2D) g.create(insets.left, insets.top, size.width - (insets.left + insets.right), size.height - (insets.top + insets.bottom));
try {
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g2d.setPaint(lineForeground);
g2d.setStroke(lineStroke);
// afficher une droite brisée
for (int j = 0; j < aaa.size() - 1; j++) {
Point AA = (Point) aaa.get(j);
Point BB = (Point) aaa.get(j + 1);
line.setLine(AA, BB);
g2d.draw(line);
}
g2d.setPaint(curveForeground);
g2d.setStroke(curveStroke);
// afficher la courbe de bezier spline
for (int i = 0; i < aaa.size() - 3; i += 3) {
Point AA = aaa.get(i);
Point BB = aaa.get(i + 1);
Point CC = aaa.get(i + 2);
Point DD = aaa.get(i + 3);
curve.setCurve(AA.x, AA.y, BB.x, BB.y, CC.x, CC.y, DD.x, DD.y);
g2d.draw(curve);
}
// afficher un cercle rouge
g2d.setPaint(circleBackground);
for (int j = 0; j < aaa.size(); j++) {
Point AA = (Point) aaa.get(j);
circle.setFrameFromCenter(AA.x, AA.y, AA.x + 2.5, AA.y + 2.5);
g2d.fill(circle);
}
} finally {
g2d.dispose();
}
}
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
/**
* {@inheritDoc}
*/
@Override
public void run() {
// TODO code application logic here
JFrame f = new JFrame("Test");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setSize(1000, 400);
f.setLayout(new BorderLayout());
f.add(new Main(), BorderLayout.CENTER);
f.setLocationRelativeTo(null);
f.setVisible(true);
}
});
}
} |
courbe de Bézier en Java
Répondre avec citation
Envoyé par azertyuio
.
quand j'ai mentionné les points j'ai voulu dire les points de controle 
quand une réponse a été apportée à votre question. Aucune réponse ne sera donnée à des messages privés portant sur des questions d'ordre technique. Les forums sont là pour que vous y postiez publiquement vos problèmes.
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