Hi!
I am lost a bit here. I have a strip of sprites (a gif file).
I load it into an Image and i need to create an
Array of Images based on that strip. I just cannot
find a way to copy a pary of that strip into another
Image object.
Help!
Thanks,
Artem
You could use a java.awt.image.BufferedImage which offers a method getSubImage(int x, int y, int w, int h) that creates a new BufferedImage object. By using a little "typecasting" you can store those BufferedImage objects in an array of Images.
Don't hesitate to ask if you have any further questions!
Tobias
Hi!
Now i use the code like this:
Image pic;
BufferedImage bi;
// load pic here using Mediatracker
bi=(BufferedImage)pic;
and i get this:
Hit uncaught exception java.lang.ClassCastException
It seems as usual typecasting does not work.
So, another problem came up. How to
interwork Image and BufferedImage. How to make
and Image from BufferedImage and how to make
BufferedImage from Image?
Please, help!
Regards,
Artem
I've written a small applet for clearification, you really can't typecast that simply:
import java.awt.*;
import java.awt.image.*;
import java.net.*;
/*
* ImagerApplet.java
*
* Created on July 23, 2001, 5:44 PM
*/ /**
*
* @author tb
* @version
*/
public class ImagerApplet extends java.applet.Applet {Image img[] = new Image[10];/** Initializes the applet ImagerApplet */
public void init () {
initComponents ();
MediaTracker tracker = new MediaTracker (this);
Image image = null;
try {
System.out.println(this.getCodeBase().toString());
image = this.getImage(new URL(this.getCodeBase() +
"de_home_title.gif"));
}
catch (MalformedURLException e) { System.out.println(e); }
tracker.addImage(image, 0);
try {
//Start downloading the images. Wait until they're loaded.
tracker.waitForAll();
} catch (InterruptedException e) {}
BufferedImage bufImg = new BufferedImage(image.getWidth(this),
image.getHeight(this),
BufferedImage.TYPE_3BYTE_BGR);
Graphics g = bufImg.getGraphics();
g.drawImage (image, 0, 0, this);
for(int i=0; i<10; i++)
img = (Image) bufImg.getSubimage(i*20, 0, 20, 20); g = this.getGraphics(); for(int i=0; i<10; i++) {
g = this.getGraphics();
g.drawImage(img, i*12, 20, this);
}
this.repaint();
}
public void paint (Graphics g) {
for (int i=0; i<10; i++) {
if(img != null) {
g.drawImage(img, i*12, 20, this);
}
}
}/** This method is called from within the init() method to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the FormEditor.
*/
private void initComponents() {//GEN-BEGIN:initComponents
panel1 = new java.awt.Panel();
panel2 = new java.awt.Panel();
setLayout(new java.awt.BorderLayout());
panel1.setFont(new java.awt.Font ("Dialog", 0, 11));
panel1.setName("panel7");
panel1.setBackground(new java.awt.Color (204, 204, 204));
panel1.setForeground(java.awt.Color.black);
add(panel1, java.awt.BorderLayout.NORTH);
panel2.setFont(new java.awt.Font ("Dialog", 0, 11));
panel2.setName("panel8");
panel2.setBackground(new java.awt.Color (204, 204, 204));
panel2.setForeground(java.awt.Color.black);
add(panel2, java.awt.BorderLayout.SOUTH);
}//GEN-END:initComponents// Variables declaration - do not modify//GEN-BEGIN:variables
private java.awt.Panel panel1;
private java.awt.Panel panel2;
// End of variables declaration//GEN-END:variables }
