new QuadCurve2D.Double(double x1, double y1, double ctrlx, double ctrly, double x2, double y2) : QuadCurve2D « java.awt.geom « Java by API

1. Java by API
2. java.awt.geom
3. QuadCurve2D

new QuadCurve2D.Double(double x1, double y1, double ctrlx, double ctrly, double x2, double y2)

 

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.CubicCurve2D;
import java.awt.geom.Point2D;
import java.awt.geom.QuadCurve2D;

import javax.swing.JFrame;
import javax.swing.JPanel;

public class MainClass extends JPanel {

  public MainClass() {
  }

  public void paint(Graphics g) {
    Point2D.Double startQ = new Point2D.Double(50, 75); // Start point
    Point2D.Double endQ = new Point2D.Double(150, 75); // End point
    Point2D.Double control = new Point2D.Double(80, 25); // Control point

    // Points for cubic curve
    Point2D.Double startC = new Point2D.Double(50, 150); // Start point
    Point2D.Double endC = new Point2D.Double(150, 150); // End point
    Point2D.Double controlStart = new Point2D.Double(80, 100); // 1st control
                                                                // point
    Point2D.Double controlEnd = new Point2D.Double(160, 100); // 2nd control
                                                              // point

    QuadCurve2D.Double quadCurve; // Quadratic curve
    CubicCurve2D.Double cubicCurve; // Cubic curve

    quadCurve = new QuadCurve2D.Double( // Create quadratic curve
        startQ.x, startQ.y, // Segment start point
        control.x, control.y, // Control point
        endQ.x, endQ.y); // Segment end point

    cubicCurve = new CubicCurve2D.Double( // Create cubic curve
        startC.x, startC.y, // Segment start point
        controlStart.x, controlStart.y, // Control point for start
        controlEnd.x, controlEnd.y, // Control point for end
        endC.x, endC.y); // Segment end point

    Graphics2D g2D = (Graphics2D) g; // Get a 2D device context

    // Draw the curves
    g2D.setPaint(Color.BLUE);
    g2D.draw(quadCurve);
    g2D.draw(cubicCurve);
  }

  public static void main(String[] args) {
    JFrame frame = new JFrame();
    frame.getContentPane().add(new MainClass());

    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(200, 200);
    frame.setVisible(true);
  }
}

           
         
  

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