POV-Ray : Newsgroups : povray.advanced-users : Editing or creating an image or heightfield in POV-Ray : Re: Editing or creating an image or heightfield in POV-Ray Server Time
9 Dec 2023 11:17:28 EST (-0500)
  Re: Editing or creating an image or heightfield in POV-Ray  
From: kurtz le pirate
Date: 11 Sep 2023 05:35:24
Message: <64fedf5c@news.povray.org>
On 10/09/2023 18:01, Bald Eagle wrote:
> With regard to TdG's interest in erosion, I was thinking about doing a quick
> test with an image map converted to a height_field.
> The only problem here is that I don't recall if there was a way to edit the
> pixel data in the image_map, or in the height_field, or to somehow use a
> function {} or a 2D array to create an image or heightfield...
> Or maybe a way to add/subtract / overlay onto the base image.
> I can't use arrays in functions, otherwise I could do image_map {function
> {array}}
> It would be useful to not have to load an image, convert that to an array, use
> that array to create a mesh, then use the algorithm I'm experimenting with to
> edit the mesh.....
> Does anyone have any ideas?
> - BW

Long time ago, I made a code that, given a png image, would plot for
each pixel a box of the original color and store this value in a 2d array.

Code attached

Maybe it can give you some ideas for your problem ?

Kurtz le pirate
Compagnie de la Banquise

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