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.
86 lines
2.5 KiB
Java
86 lines
2.5 KiB
Java
import java.awt.*;
|
|
import java.awt.geom.*;
|
|
|
|
/**
|
|
* The letter C is defined by a GeneralPath and the letter and the
|
|
* control points are drawn.
|
|
*
|
|
* @author Frank Klawonn
|
|
* Last change 01.02.2005
|
|
*/
|
|
public class SimpleLetterC extends Frame
|
|
{
|
|
|
|
//Constructor
|
|
public SimpleLetterC()
|
|
{
|
|
//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 xc1 = 50;
|
|
int yc1 = 250;
|
|
int xc2 = 250;
|
|
int yc2 = 50;
|
|
int xc3 = 50;
|
|
int yc3 = 50;
|
|
int xc4 = 250;
|
|
int yc4 = 450;
|
|
int xc5 = 50;
|
|
int yc5 = 450;
|
|
//Definition and drawing of the two curves that define the letter.
|
|
QuadCurve2D.Double d1 = new QuadCurve2D.Double(xc1,yc1,xc3,yc3,xc2,yc2);
|
|
g2d.draw(d1);
|
|
QuadCurve2D.Double d2 = new QuadCurve2D.Double(xc1,yc1,xc5,yc5,xc4,yc4);
|
|
g2d.draw(d2);
|
|
//Draw the control points.
|
|
drawSmallRect(xc1,yc1,g2d);
|
|
drawSmallRect(xc2,yc2,g2d);
|
|
drawSmallRect(xc3,yc3,g2d);
|
|
drawSmallRect(xc4,yc4,g2d);
|
|
drawSmallRect(xc5,yc5,g2d);
|
|
//Label the control points.
|
|
g2d.setFont(new Font("serif",Font.PLAIN,24));
|
|
g2d.drawString("P1'",xc1+10,yc1+5);
|
|
g2d.drawString("P2'",xc2+10,yc2+10);
|
|
g2d.drawString("P3'",xc3-35,yc3+4);
|
|
g2d.drawString("P4'",xc4+10,yc4+10);
|
|
g2d.drawString("P5'",xc5+10,yc5+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)
|
|
{
|
|
SimpleLetterC f = new SimpleLetterC();
|
|
f.setTitle("The letter C");
|
|
f.setSize(420,500);
|
|
f.setVisible(true);
|
|
}
|
|
|
|
|
|
}
|