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| import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.util.List;
import java.util.*;
import javax.swing.*;
import javax.swing.Timer;
public class TestRotate {
public static class ShapeAndColor {
private final Shape shape;
private final Color color;
public ShapeAndColor(Shape shape, Color color) {
super();
this.shape = shape;
this.color = color;
}
public Shape getShape() {
return shape;
}
public Color getColor() {
return color;
}
}
public static double po=0.0;
public static class RotatingShapesPanel extends JComponent {
private List<ShapeAndColor> shapes;
private double rotation = 0.0;
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D) g;
AffineTransform translate = AffineTransform.getTranslateInstance(-getWidth()/2, -getHeight()/2);
AffineTransform rotate = AffineTransform.getRotateInstance(rotation);
AffineTransform t = AffineTransform.getTranslateInstance(getWidth()/2 , getHeight()/2);
t.concatenate(rotate);
t.concatenate(translate);
g2d.setTransform(t);
AffineTransform scale = AffineTransform.getScaleInstance(getWidth(), getHeight());
for (ShapeAndColor shape : shapes) {
Area area = new Area(shape.getShape());
g2d.setColor(shape.getColor());
area.transform(scale);
g2d.fill(area);
}
}
public void setShapes(List<ShapeAndColor> shapes) {
this.shapes = shapes;
repaint();
}
public double getRotation() {
return rotation;
}
public void setRotation(double rotation) {
this.rotation = rotation;
repaint();
}
}
protected void initUI(final boolean useBorderLayout) {
JFrame frame = new JFrame();
JFrame btnFrm = new JFrame();
double op;
frame.add(new TestPane());
frame.getContentPane().setLayout(new GridLayout(1,1));
frame.setSize(1500, 2000);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setBackground(new Color(50,150,200));
btnFrm.getContentPane().setLayout(new GridLayout(3,1));
btnFrm.setSize(100, 300);
btnFrm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
btnFrm.getContentPane().setBackground(new Color(200,150,50));
JButton leftBtn = new JButton("против часовой стрелки");
leftBtn.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent ActionEvent) {
po=-0.02;
}
});
btnFrm.add(leftBtn);
JButton rightBtn = new JButton("по часовой стрелки:");
rightBtn.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent ActionEvent) {
po=0.02 ;
}
});
btnFrm.add(rightBtn);
JButton stopBtn = new JButton("STOP!!!");
stopBtn.addActionListener((ActionEvent) -> {
po=0.0;
});
btnFrm.add(stopBtn);
List<ShapeAndColor> shapes = new ArrayList<>();
Random r = new Random();
double x = 0.4;
double y =0.4;
double p1 = 0.1;
double p2 =0.1;
Rectangle2D.Double shape = new Rectangle2D.Double(x, y, p1, p2);
Color color = new Color(r.nextInt(256), r.nextInt(256), r.nextInt(256));
shapes.add(new ShapeAndColor(shape, color));
final RotatingShapesPanel panel = new RotatingShapesPanel();
panel.setShapes(shapes);
frame.add(panel);
frame.setSize(500, 500);
frame.setVisible(true);
btnFrm.setVisible(true);
Timer t = new Timer(0, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
double rotation = panel.getRotation() + po;
if (rotation > Math.PI * 2) {
rotation -= Math.PI * 2;
}
panel.setRotation(rotation);
}
});
t.setRepeats(true);
t.setDelay(3);
t.start();
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new TestRotate().initUI(true);
}
});
}
class TestPane extends JPanel {
TriangleShape triangleShape;
Polygon poly;
public TestPane() {
triangleShape = new TriangleShape(new Point2D.Double(150, 50),new Point2D.Double(150, 150), new Point2D.Double(50, 150));
poly = new Polygon(new int[] { 150, 200, 100 }, new int[] { 100, 200, 200 }, 3);
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D) g.create();
g2d.setColor(Color.RED);
g2d.fill(poly);
g2d.dispose();
}
}
class TriangleShape extends Path2D.Double {
public TriangleShape(Point2D... points) {
moveTo(points[0].getX(), points[0].getY());
lineTo(points[1].getX(), points[1].getY());
lineTo(points[2].getX(), points[2].getY());
closePath();
}
}
} |
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