You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
87 lines
2.5 KiB
Java
87 lines
2.5 KiB
Java
import java.awt.*;
|
|
import java.awt.geom.*;
|
|
|
|
/**
|
|
* The letter D is defined by a GeneralPath and the letter and the
|
|
* control points are drawn.
|
|
*
|
|
* @author Frank Klawonn
|
|
* Last change 01.02.2005
|
|
*/
|
|
public class SimpleLetterD extends Frame
|
|
{
|
|
|
|
//Constructor
|
|
public SimpleLetterD()
|
|
{
|
|
//Enables the closing of the window.
|
|
addWindowListener(new MyFinishWindow());
|
|
}
|
|
|
|
|
|
public void paint(Graphics g)
|
|
{
|
|
Graphics2D g2d = (Graphics2D) g;
|
|
//Use of antialiasing to have nicer lines.
|
|
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);
|
|
//The lines should have a thickness of 3.0 instead of 1.0.
|
|
BasicStroke bs = new BasicStroke(3.0f);
|
|
g2d.setStroke(bs);
|
|
//The control points for defining the letter.
|
|
int xd1 = 50;
|
|
int yd1 = 50;
|
|
int xd2 = 50;
|
|
int yd2 = 450;
|
|
int xd3 = 400;
|
|
int yd3 = 250;
|
|
int xd4 = 50;
|
|
int yd4 = 450;
|
|
int xd5 = 50;
|
|
int yd5 = 250;
|
|
//Definition and drawing of the two curves that define the letter.
|
|
QuadCurve2D.Double d1 = new QuadCurve2D.Double(xd1,yd1,xd3,yd3,xd2,yd2);
|
|
g2d.draw(d1);
|
|
QuadCurve2D.Double d2 = new QuadCurve2D.Double(xd1,yd1,xd5,yd5,xd4,yd4);
|
|
g2d.draw(d2);
|
|
//Draw the control points.
|
|
drawSmallRect(xd1,yd1,g2d);
|
|
drawSmallRect(xd2,yd2,g2d);
|
|
drawSmallRect(xd3,yd3,g2d);
|
|
drawSmallRect(xd4,yd4,g2d);
|
|
drawSmallRect(xd5,yd5,g2d);
|
|
//Label the control points.
|
|
g2d.setFont(new Font("serif",Font.PLAIN,24));
|
|
g2d.drawString("P1",xd1+5,yd1);
|
|
g2d.drawString("P2",xd2-40,yd2+10);
|
|
g2d.drawString("P3",xd3-35,yd3+4);
|
|
g2d.drawString("P4",xd4+20,yd4+10);
|
|
g2d.drawString("P5",xd5+10,yd5+10);
|
|
}
|
|
|
|
|
|
/**
|
|
* Draws a small square around the centre (x,y).
|
|
*
|
|
* @param x x-coordinate of the centre
|
|
* @param y y-coordinate of the centre
|
|
* @param g2d Graphics2D object for drawing
|
|
*/
|
|
public static void drawSmallRect(int x, int y, Graphics2D g2d)
|
|
{
|
|
Rectangle rect = new Rectangle(x-4,y-3,8,8);
|
|
g2d.fill(rect);
|
|
}
|
|
|
|
|
|
public static void main(String[] argv)
|
|
{
|
|
SimpleLetterD f = new SimpleLetterD();
|
|
f.setTitle("The letter D");
|
|
f.setSize(420,500);
|
|
f.setVisible(true);
|
|
}
|
|
|
|
|
|
}
|
|
|