Imagedata row order

[Dar Scott]

On Jul 21, 2006, at 1:55 PM, J. Landman Gay wrote:

> I am trying to figure out how to set an image's imageData to a  
> repeating pattern. I have a pattern that is 8 x 8 pixels. I want to  
> repeat this pattern 16 times in order to fill a 32-pixel square image.
>
> If I repeat the pattern 4 times, I get a nice column of four  
> repeating patterns going down the left edge of the image. If I  
> repeat it 16 times I get junk. In what order are the pixels laid  
> down, and what determines where and when they wrap?

I can't remember the exact details.  Once you get the image data, set  
the image to empty, set the height and width and then set the imageData.

In building the imageData, you can't just repeat the pattern 16  
times.  You have to repeat the first row 4 times.  Then the second  
through 8th.  Repeat all that 4 times.

I think Chipp has an image overlay function.

Dar