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package test;
import java.awt.*;
import java.awt.image.*;
import java.awt.geom.*;
import javax.swing.*;
/**
* <p>Title: </p>
*
* <p>Description: </p>
*
* <p>Copyright: Copyright (c) 2006</p>
*
* <p>Company: </p>
*
* @author not attributable
* @version 1.0
*/
class TestAreaIntersects extends JPanel {
private enum RenderMethod {
FILL, DRAW;
}
private static int OPTION_NONE = 0;
private static int OPTION_VERTEX = 1;
private static int OPTION_BOUNDING_BOX = 2;
private RenderMethod renderMethod;
private Shape shape;
private Paint paint;
private int option;
public TestAreaIntersects(Shape shape, RenderMethod renderMethod, Paint paint, int option) {
super();
this.shape = shape;
this.renderMethod = renderMethod;
this.paint = paint;
this.option = option;
}
@Override protected void paintComponent(Graphics g) {
super.paintComponent(g);
setBackground(Color.WHITE);
Graphics2D g2d = (Graphics2D) g;
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g2d.setPaint(paint);
switch (renderMethod) {
case DRAW:
g2d.draw(shape);
break;
case FILL:
g2d.fill(shape);
}
g2d.setColor(Color.BLACK);
g2d.drawLine(0, 0, 100, 0);
g2d.drawLine(0, 0, 0, 100);
if ((option & OPTION_VERTEX) == OPTION_VERTEX) {
g2d.setXORMode(Color.BLACK);
g2d.setPaint(Color.CYAN);
Rectangle2D.Float rect = new Rectangle2D.Float();
float[] points = new float[6];
for (PathIterator pi = shape.getPathIterator(null); !pi.isDone(); pi.next()) {
int seg = pi.currentSegment(points);
switch (seg) {
case PathIterator.SEG_MOVETO:
case PathIterator.SEG_LINETO:
rect.setFrame(points[0] - 0.5f, points[1] - 0.5f, 1, 1);
case PathIterator.SEG_QUADTO:
rect.setFrame(points[2] - 0.5f, points[3] - 0.5f, 1, 1);
break;
case PathIterator.SEG_CUBICTO:
rect.setFrame(points[4] - 0.5f, points[5] - 0.5f, 1, 1);
break;
case PathIterator.SEG_CLOSE:
continue;
}
g2d.fill(rect);
g2d.draw(rect);
}
g2d.setPaintMode();
}
if ((option & OPTION_BOUNDING_BOX) == OPTION_BOUNDING_BOX) {
g2d.setStroke(new BasicStroke(0.5f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_ROUND, 0, new float[] {2}, 0));
g2d.setColor(Color.DARK_GRAY);
g2d.draw(shape.getBounds2D());
}
}
public static void main(String ...args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
GeneralPath path = new GeneralPath();
int lineNumber = 10;
int x = 50;
int y = 50;
int width = 100;
int height = 100;
float dy = height / (float) (lineNumber + 1);
for (int i = 0; i < lineNumber; i++) {
path.moveTo(x, y + dy + i * dy);
path.lineTo(x + width, y + dy + i * dy);
}
Shape shape1 = new BasicStroke(1f).createStrokedShape(path);
Shape shape2 = new Ellipse2D.Float(x, y, width, height);
Area shape3 = new Area(shape1);
shape3.intersect(new Area(shape2));
JFrame frame = new JFrame("Test");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new GridLayout(1, 3));
frame.add(new TestAreaIntersects(shape1, RenderMethod.DRAW, Color.BLUE, OPTION_BOUNDING_BOX));
frame.add(new TestAreaIntersects(shape2, RenderMethod.FILL, Color.RED, OPTION_BOUNDING_BOX));
frame.add(new TestAreaIntersects(shape3, RenderMethod.DRAW, Color.GREEN, OPTION_VERTEX | OPTION_BOUNDING_BOX));
frame.setSize(600, 400);
frame.setVisible(true);
float[] points = new float[6];
for (PathIterator pi = new FlatteningPathIterator(shape3.getPathIterator(null), 1); !pi.isDone(); pi.next()) {
int seg = pi.currentSegment(points);
switch (seg) {
case PathIterator.SEG_MOVETO:
System.out.printf("MOVE (%f, %f)", points[0], points[1]);
break;
case PathIterator.SEG_LINETO:
System.out.printf(" -> LINE (%f, %f)", points[0], points[1]);
break;
case PathIterator.SEG_QUADTO:
System.out.printf(" ~> QUAD [%f, %f] (%f, %f)", points[0], points[1], points[2], points[3]);
break;
case PathIterator.SEG_CUBICTO:
System.out.printf(" ~~> CUBIC [%f, %f] [%f, %f] (%f, %f)", points[0], points[1], points[2], points[3], points[4], points[5]);
break;
case PathIterator.SEG_CLOSE:
System.out.println(" -| END (back to first point of the list)");
}
}
}
});
}
} |
Recuperer les coordonnées d'une intersection entre deux formes
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