Gradient Textures

[David Bovill]

Successfully crashing Rev with this :) Just to check - imagedata is
basically one long binary string with each pixel represented by 4 bytes
(that is characters for the rest of us), and no consideration of the width
and height of the image coming into this simple long string. On the other
hand if you dont get the format and length of this string right - you may
end up crashing Rev :) The length should be:

  4 x the width of imageObject * the height of imageObject

Now to figure out what i am doing to crash Rev...