Java by API/java.awt.geom/GeneralPath

GeneralPath: closePath()

  
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.GeneralPath;
import java.awt.geom.Point2D;
import javax.swing.JComponent;
import javax.swing.JFrame;
class MyCanvas extends JComponent {
  public void paint(Graphics g) {
    Graphics2D g2D = (Graphics2D) g;
    Point2D.Float point = new Point2D.Float(100, 100);                     // store start point
    GeneralPath p = new GeneralPath(GeneralPath.WIND_NON_ZERO);
    p.moveTo(point.x, point.y);
    p.lineTo(point.x + 20.0f, point.y - 5.0f);           // Line from start to A
    point = (Point2D.Float)p.getCurrentPoint();
    p.lineTo(point.x + 5.0f, point.y - 20.0f);           // Line from A to B
    point = (Point2D.Float)p.getCurrentPoint();
    p.lineTo(point.x + 5.0f, point.y + 20.0f);           // Line from B to C
    point = (Point2D.Float)p.getCurrentPoint();
    p.lineTo(point.x + 20.0f, point.y + 5.0f);           // Line from C to D
    point = (Point2D.Float)p.getCurrentPoint();
    p.lineTo(point.x - 20.0f, point.y + 5.0f);           // Line from D to E
    point = (Point2D.Float)p.getCurrentPoint();
    p.lineTo(point.x - 5.0f, point.y + 20.0f);           // Line from E to F
    point = (Point2D.Float)p.getCurrentPoint();
    p.lineTo(point.x - 5.0f, point.y - 20.0f);           // Line from F to g
    p.closePath();                                       // Line from G to start
    g2D.draw(p);
  }
}
public class Main {
  public static void main(String[] a) {
    JFrame window = new JFrame();
    window.setBounds(30, 30, 300, 300);
    window.getContentPane().add(new MyCanvas());
    window.setVisible(true);
  }
}

GeneralPath: curveTo(float x1, float y1, float x2, float y2, float x3, float y3)

  
import java.awt.geom.GeneralPath;
public class Main {
  public static void main(String[] args) {
    GeneralPath shape = new GeneralPath();
    shape.moveTo(1, 1);
    shape.lineTo(2, 2);
    shape.quadTo(3, 3, 4, 4);
    shape.curveTo(5, 5, 6, 6, 7, 7);
    shape.closePath();
  }
}

GeneralPath: lineTo(float x, float y)

 
import java.awt.Color;
import java.awt.Container;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Shape;
import java.awt.geom.GeneralPath;
import javax.swing.JComponent;
import javax.swing.JFrame;
public class MainClass{
  public static void main(String[] args) {
    JFrame jf = new JFrame("Demo");
    Container cp = jf.getContentPane();
    MyCanvas tl = new MyCanvas();
    cp.add(tl);
    jf.setSize(300, 200);
    jf.setVisible(true);
  }
}
class MyCanvas extends JComponent {
  Shape shape;
  public MyCanvas() {
    shape = create();
  }
  protected Shape create() {
    GeneralPath path = new GeneralPath();
    path.moveTo(50, 30);
    path.lineTo(30, 200);
    return path;
  }

  public void paint(Graphics g) {
    Graphics2D g2 = (Graphics2D) g;
    g2.setPaint(Color.black);
    g2.draw(shape);
  }
}

GeneralPath: moveTo(float x, float y)

 
import java.awt.Color;
import java.awt.Container;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Shape;
import java.awt.geom.GeneralPath;
import javax.swing.JComponent;
import javax.swing.JFrame;
public class MainClass{
  public static void main(String[] args) {
    JFrame jf = new JFrame("Demo");
    Container cp = jf.getContentPane();
    MyCanvas tl = new MyCanvas();
    cp.add(tl);
    jf.setSize(300, 200);
    jf.setVisible(true);
  }
}
class MyCanvas extends JComponent {
  Shape shape;
  public MyCanvas() {
    shape = create();
  }
  protected Shape create() {
    GeneralPath path = new GeneralPath();
    path.moveTo(50, 30);
    path.lineTo(30, 200);
    return path;
  }

  public void paint(Graphics g) {
    Graphics2D g2 = (Graphics2D) g;
    g2.setPaint(Color.black);
    g2.draw(shape);
  }
}

GeneralPath: quadTo(float x1, float y1, float x2, float y2)

  
import java.awt.geom.GeneralPath;
public class Main {
  public static void main(String[] args) {
    GeneralPath shape = new GeneralPath();
    shape.moveTo(1, 1);
    shape.lineTo(2, 2);
    shape.quadTo(3, 3, 4, 4);
    shape.curveTo(5, 5, 6, 6, 7, 7);
    shape.closePath();
  }
}

GeneralPath.WIND_NON_ZERO

  
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.GeneralPath;
import java.awt.geom.Point2D;
import javax.swing.JComponent;
import javax.swing.JFrame;
class MyCanvas extends JComponent {
  public void paint(Graphics g) {
    Graphics2D g2D = (Graphics2D) g;
    Point2D.Float point = new Point2D.Float(100, 100);                     // store start point
    GeneralPath p = new GeneralPath(GeneralPath.WIND_NON_ZERO);
    p.moveTo(point.x, point.y);
    p.lineTo(point.x + 20.0f, point.y - 5.0f);           // Line from start to A
    point = (Point2D.Float)p.getCurrentPoint();
    p.lineTo(point.x + 5.0f, point.y - 20.0f);           // Line from A to B
    point = (Point2D.Float)p.getCurrentPoint();
    p.lineTo(point.x + 5.0f, point.y + 20.0f);           // Line from B to C
    point = (Point2D.Float)p.getCurrentPoint();
    p.lineTo(point.x + 20.0f, point.y + 5.0f);           // Line from C to D
    point = (Point2D.Float)p.getCurrentPoint();
    p.lineTo(point.x - 20.0f, point.y + 5.0f);           // Line from D to E
    point = (Point2D.Float)p.getCurrentPoint();
    p.lineTo(point.x - 5.0f, point.y + 20.0f);           // Line from E to F
    point = (Point2D.Float)p.getCurrentPoint();
    p.lineTo(point.x - 5.0f, point.y - 20.0f);           // Line from F to g
    p.closePath();                                       // Line from G to start
    g2D.draw(p);
  }
}
public class Main {
  public static void main(String[] a) {
    JFrame window = new JFrame();
    window.setBounds(30, 30, 300, 300);
    window.getContentPane().add(new MyCanvas());
    window.setVisible(true);
  }
}