FileDocCategorySizeDatePackage
ClipAnim.javaAPI DocExample9468Wed Aug 08 15:13:48 BST 2001demos.Clipping

ClipAnim

public class ClipAnim extends AnimatingControlsSurface
Animated clipping of an image & composited shapes.

Fields Summary
private static Image
dimg
private static Image
cimg
private static Color
redBlend
private static Color
greenBlend
private static BasicStroke
bs
static TexturePaint
texture
private AnimVal[]
animval
protected boolean
doObjects
private Font
originalFont
private Font
font
private GradientPaint
gradient
private int
strX
private int
strY
private int
dukeX
private int
dukeY
Constructors Summary
public ClipAnim()



      
        cimg = getImage("clouds.jpg");
        dimg = getImage("duke.gif");
        setBackground(Color.white);
        animval[0] = new AnimVal(true);
        animval[1] = new AnimVal(false);
        animval[2] = new AnimVal(false);
        setControls(new Component[] { new DemoControls(this) });
Methods Summary
public static voidmain(java.lang.String[] argv)

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


        GeneralPath p1 = new GeneralPath();
        GeneralPath p2 = new GeneralPath();

        for (int i = 0; i < animval.length; i++) {
            if (animval[i].isSelected) {
                double x = animval[i].x; double y = animval[i].y;
                double ew = animval[i].ew; double eh = animval[i].eh;
                p1.append(new Ellipse2D.Double(x, y, ew, eh), false);
                p2.append(new Rectangle2D.Double(x+5, y+5, ew-10, eh-10),false);
            }
        }
        if (animval[0].isSelected || animval[1].isSelected || 
            animval[2].isSelected) 
        {
            g2.setClip(p1);
            g2.clip(p2);
        }

        if (doObjects) {
            int w2 = w/2;
            int h2 = h/2;
            g2.drawImage(cimg, 0, 0, w2, h2, null);
            g2.drawImage(dimg, dukeX, dukeY, null);

            g2.setPaint(texture);
            g2.fillRect(w2, 0, w2, h2);

            g2.setPaint(gradient);
            g2.fillRect(0, h2, w2, h2);

            g2.setColor(Color.lightGray);
            g2.fillRect(w2, h2, w2, h2);
            g2.setColor(Color.red);
            g2.drawOval(w2, h2, w2-1, h2-1);
            g2.setFont(font);
            g2.drawString("CLIPPING", strX, strY);
        } else {
            g2.setColor(Color.lightGray);
            g2.fillRect(0, 0, w, h);
        }
public voidreset(int w, int h)

        for (int i = 0; i < animval.length; i++) {
            animval[i].reset(w, h);
        }
        gradient = new GradientPaint(0,h/2,Color.red,w*.4f,h*.9f,Color.yellow);
        dukeX = (int) (w*.25-dimg.getWidth(this)/2);
        dukeY = (int) (h*.25-dimg.getHeight(this)/2);
        FontMetrics fm = getFontMetrics(originalFont);
        double sw = fm.stringWidth("CLIPPING");
        double sh = fm.getAscent()+fm.getDescent();
        double sx = (w/2-30)/sw;
        double sy = (h/2-30)/sh;
        AffineTransform Tx = AffineTransform.getScaleInstance(sx, sy);
        font = originalFont.deriveFont(Tx);
        fm = getFontMetrics(font);
        strX = (int) (w*.75 - fm.stringWidth("CLIPPING")/2);
        strY = (int) (h*.72 + fm.getAscent()/2);
public voidstep(int w, int h)

        for (int i = 0; i < animval.length; i++) {
            if (animval[i].isSelected) {
                animval[i].step(w, h);
            }
        }