86 lines
2.6 KiB
Java
86 lines
2.6 KiB
Java
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import java.awt.*;
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import java.awt.geom.*;
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/**
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* Der Buchstabe D wird mittels eines GeneralPath erzeugt und die verwendeten
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* Kontrollpunkte gezeichnet.
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*
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* @author Frank Klawonn
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* Letzte Aenderung 01.02.2005
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*/
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public class SimpleLetterCColour extends Frame
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{
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//Konstruktor
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public SimpleLetterCColour()
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{
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//Ermoeglicht das Schliessen des Fensters
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addWindowListener(new MyFinishWindow());
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}
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public void paint(Graphics g)
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{
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Graphics2D g2d = (Graphics2D) g;
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//Verwendung von Antialiasing, um die Raender weniger ausgefranst
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//erscheinen zu lassen
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g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);
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//Die Linien sollen eine Dicke von 3.0 statt 1.0 haben.
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BasicStroke bs = new BasicStroke(3.0f);
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g2d.setStroke(bs);
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//Die Kontrollpunkte, mit denen der Buchstabe definiert wird
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int xc1 = 50;
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int yc1 = 250;
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int xc2 = 250;
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int yc2 = 50;
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int xc3 = 50;
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int yc3 = 50;
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int xc4 = 250;
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int yc4 = 450;
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int xc5 = 50;
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int yc5 = 450;
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//Definition und Zeichnen der beiden Kurven, die den Buchstaben definieren
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QuadCurve2D.Double d1 = new QuadCurve2D.Double(xc1,yc1,xc3,yc3,xc2,yc2);
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g2d.draw(d1);
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QuadCurve2D.Double d2 = new QuadCurve2D.Double(xc1,yc1,xc5,yc5,xc4,yc4);
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g2d.draw(d2);
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//Zeichnen der Kontrollpunkte in unterschiedlichen Farben
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g2d.setPaint(Color.blue);
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drawSmallRect(xc1,yc1,g2d);
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g2d.setPaint(Color.green);
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drawSmallRect(xc2,yc2,g2d);
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g2d.setPaint(Color.magenta);
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drawSmallRect(xc3,yc3,g2d);
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g2d.setPaint(Color.red);
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drawSmallRect(xc4,yc4,g2d);
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g2d.setPaint(Color.yellow);
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drawSmallRect(xc5,yc5,g2d);
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}
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/**
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* Eine Methode zum Zeichnen eines kleinen Quadrats
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*
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* @param x x-Koordinate der oberen linken Ecke des Quadrats
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* @param y y-Koordinate der oberen linken Ecke des Quadrats
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* @param g2d Graphics2D-Objekt, auf das gezeichnet werden soll.
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*/
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public static void drawSmallRect(int x, int y, Graphics2D g2d)
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{
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Rectangle rect = new Rectangle(x-4,y-3,8,8);
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g2d.fill(rect);
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}
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public static void main(String[] argv)
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{
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SimpleLetterCColour f = new SimpleLetterCColour();
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f.setTitle("Der Buchstabe C");
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f.setSize(420,500);
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f.setVisible(true);
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}
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}
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