FileDocCategorySizeDatePackage
ACimages.javaAPI DocExample3940Wed Aug 08 15:13:48 BST 2001demos.Composite

ACimages

public class ACimages extends Surface
Compositing shapes on images.

Fields Summary
private static String[]
s
private static Image[]
imgs
private static Color[]
colors
Constructors Summary
public ACimages()



      
        setBackground(Color.white);
        for (int i = 0; i < imgs.length; i++) {
            imgs[i] = getImage(s[i] + ".gif");
        }
Methods Summary
public static voidmain(java.lang.String[] s)

        createDemoFrame(new ACimages());
public voidrender(int w, int h, java.awt.Graphics2D g2)


        float alpha = 0.0f;
        int iw = w/3;
        int ih = (h-45)/3;
        float xx = 0, yy = 15;

        for (int i =0; i < imgs.length; i++) {

            xx = (i%3 == 0) ? 0 : xx+w/3;
            switch (i) {
                case 3 : yy = h/3+15; break;
                case 6 : yy = h/3*2+15;
            }

            g2.setComposite(AlphaComposite.SrcOver);
            g2.setColor(Color.black);
            AlphaComposite ac = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, alpha += .1f);
            String s = "a=" + Float.toString(alpha).substring(0,3);
            new TextLayout(s,g2.getFont(), g2.getFontRenderContext()).draw(g2, xx+3, yy-2);

            Shape shape=null;

            switch (i%3) {
                case 0 : shape = new Ellipse2D.Float(xx, yy, iw, ih);
                        break;
                case 1 : shape = new RoundRectangle2D.Float(xx, yy, iw, ih, 25, 25);
                        break;
                case 2 : shape = new Rectangle2D.Float(xx, yy, iw, ih);
                        break;
            }
            g2.setColor(colors[i]);
            g2.setComposite(ac);
            g2.fill(shape);
            g2.drawImage(imgs[i], (int) xx, (int) yy, iw, ih, null);
        }