TestResolution.java

// Copyright 2004, FreeHEP.
package org.freehep.graphicsio.test;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Insets;
import java.awt.geom.Ellipse2D;

import org.freehep.graphics2d.VectorGraphics;

/**
 * 
 * @author Mark Donszelmann
 * @version $Id: TestResolution.java 8584 2006-08-10 23:06:37Z duns $
 */
public class TestResolution extends TestingPanel {

    public TestResolution(String[] args) throws Exception {
        super(args);
        setName("Resolution");
    }

    public void paintComponent(Graphics g) {
        if (g == null)
            return;

        VectorGraphics vg = VectorGraphics.create(g);

        Dimension dim = getSize();
        Insets insets = getInsets();

        vg.setColor(Color.white);
        vg.fillRect(insets.left, insets.top, dim.width - insets.left
                - insets.right, dim.height - insets.top - insets.bottom);

        double w = dim.width / 3;
        double h = dim.height / 5;
        double s = 0.0000001;
        for (int i = 0; i < 15; i++) {
            VectorGraphics vgs = (VectorGraphics) vg.create();
            if (i < 5) {
                vgs.translate(0, i * h);
            } else if (i < 10) {
                vgs.translate(w, (i - 5) * h);
            } else {
                vgs.translate(2 * w, (i - 10) * h);
            }
            vgs.translate(w / 2, h / 2);

            double sc = 0.5 * Math.min(w, h) / 2;
            vgs.scale(sc, sc);
            vgs.scale(1 / s, 1 / s);

            vgs.setStroke(new BasicStroke((float) (0.5 * s),
                    BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND));

            vgs.setColor(Color.black);
            vgs.draw(new Ellipse2D.Double(-1 * s, -1 * s, 2 * s, 2 * s));
            vgs.dispose();

            s *= 10;
        }
    }

    public static void main(String[] args) throws Exception {
        new TestResolution(args).runTest();
    }
}