Removed ImageUtils

[Mugen87]

Removed the deprecated ImageUtils. The code of this file was not used in the entire repo anymore.

[tentone]

Hi i would prefer to move this to a examples/js/utils folder.

I think that the ImageUtils class migth be of help sometimes.

[donmccurdy]

@tentone It's in examples already — was there a particular part that looks helpful?

I think generateDataTexture seems fairly trivial, and could just be an example in the docs for THREE.DataTexture.

Computing a normal map from a height map is more complex, but there's no threejs-specific code in that at all, and you can find essentially the same source code on www.paulbrunt.co.uk/lab/heightnormal/ or #427.

So for me, +1 on removing ImageUtils, and we can add links to any appropriate resources instead.

[Mugen87]

I think generateDataTexture seems fairly trivial, and could just be an example in the docs for THREE.DataTexture.

Good idea! I'll add the code to the documentation page.

[tentone]

Totally agree.

I only see value in the normal map generator as well, the datatexture generator is really simple.

But i also don't have any specific reason to remove it from the repo, i find it to be useful and it is not part of the core anyway.

[donmccurdy]

But i also don't have any specific reason to remove it from the repo, i find it to be useful and it is not part of the core anyway.

It's just more to maintain is the issue; ideally the examples/js/* folder should contain examples of three.js-specific things. A generic WebGL example like this would be better in a blog post or GitHub gist somewhere.

[mrdoob]

I only see value in the normal map generator as well.

I think that code will be more useful in texgen.js 😊 #todolist

[mrdoob]

Thanks!