Low-level image drawing

Question

Hi All,
I'm using a MemoryImageSource for animation, in the hope of speeding up refresh rates (I'm using quite an old machine). I can get the MemoryImageSource to render ok, and can draw lines/pixels, and animate them.
The problem I'm having is drawing sprites onto the int[] of the MemoryImageSource. I can get the sprite into an integer array using:
BufferedImage.getData().getPixels(0,0,60,60,pix[]);
but when I try to update the pixels in the MIS array I'm calculating the offset correctly for each scan-line), all I get is a white rectangle the size and shape of the sprite.
I'm trying to set the MIS array like this:
for(int j=0;j<height;j++) {
for(int i=0;i<width;i++) {
MISPixel[MISWidth*j+i]=sprite[width*j+i];
updateOffset();
Anyone got any ideas? Thanks in advance.

Answer 1

if you arn't doing per-pixel operations, you shouldn't be considering either of those solutions. For regular image drawing they will be far far slower.
Use BufferStrategy and ManagedImages
However, to answer your question, There are several solutions.
You can use PixelGrabber (which is ugly and old),
or you could copy your image into a BufferedImage of known pixel format, and use bufferedImage.getRaster().getDataBuffer().
If you are using ImageIO to read in your images, then you already have a BufferedImage and there is no need to copy it into a new 1.(though the pixel format of the BufferedImage returned from ImageIO might not be what you want)