Hi Donnie, 'Charlie' is preferable - and 'Chuck' is offensive ;)
One idea that I have further down on the todo list is the ability to manipulate the histogram 'curves' of an image. The plan is to allow users to load simple black/white images and generate a distance transform of the image - where all of the pixels are replaced with a gray value depicting their distance to the nearest black/white edge. With this distance value I can then let the user sculpt a Z function to apply so that they can effectively generate an interesting depthmap from a simple black/white binary image.
For example:
There would be something similar to the graph in the top left that lets you remap the center distance field result into any depth-function you plot on the graph using a spline type curve or something. This would let you create neat concentric ripples or nice ornamental trim, etc.. But just having basic image manipulation, and even simple text and shape plotting would be great too, which would be pretty easy to do quickly if I did a basic GPU based image editor that had this sort of post processing functionality applied to the final result that PixelCNC would then perform its magic on.
Thanks for the input!