65 lines
2.1 KiB
Java
65 lines
2.1 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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* Examples for the variants of ellipse arcs are shown in this program.
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*
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* @author Frank Klawonn
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* Last change 07.01.2005
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*/
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public class ArcExample extends Frame
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{
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//Constructor
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ArcExample()
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{
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//Enables the closing of the window
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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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//Use of antialiasing to have nicer lines
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g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);
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//Draw the ellipse arcs a little bit thicker, the enclosing rectangles a little bit thinner.
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BasicStroke bsThin = new BasicStroke(2.0f);
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BasicStroke bsThick = new BasicStroke(3.0f);
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//The enclosing rectangle of the first ellipse
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Rectangle2D.Double rect1 = new Rectangle2D.Double(50,50,200,100);
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g2d.setStroke(bsThin);
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g2d.draw(rect1);
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//An ellipse arc
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Arc2D.Double arcOpen = new Arc2D.Double(rect1,45,90,Arc2D.OPEN);
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g2d.setStroke(bsThick);
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g2d.draw(arcOpen);
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//The enclosing rectangle of the second ellipse
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Rectangle2D.Double rect2 = new Rectangle2D.Double(300,50,200,100);
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g2d.setStroke(bsThin);
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g2d.draw(rect2);
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//A sector of an ellipse
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Arc2D.Double arcPie = new Arc2D.Double(rect2,45,90,Arc2D.PIE);
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g2d.setStroke(bsThick);
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g2d.draw(arcPie);
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//The enclosing rectangle of the third ellipse
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Rectangle2D.Double rect3 = new Rectangle2D.Double(550,50,200,100);
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g2d.setStroke(bsThin);
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g2d.draw(rect3);
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//A segment of an ellipse
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Arc2D.Double arcChord = new Arc2D.Double(rect3,45,90,Arc2D.CHORD);
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g2d.setStroke(bsThick);
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g2d.draw(arcChord);
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}
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public static void main(String[] argv)
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{
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ArcExample f = new ArcExample();
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f.setTitle("Ellipse arc, section and segment");
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f.setSize(800,200);
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f.setVisible(true);
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}
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}
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