Request: Passing IImage or ITexture as heightmaps

Wyg · Post by **Wyg** » Wed Sep 02, 2009 1:27 pm

Just a quick feature request: it'd be nice if you could pass an ITexture or IImage to a terrain scene node as its heightmap instead of a file. I'm working on a procedural terrain engine, and this would certainly come in helpful

hybrid · Post by **hybrid** » Wed Sep 02, 2009 9:10 pm

You should use loadHeightmapRAW, which has much better performance and can easily be used with a memory read file

Wyg · Post by **Wyg** » Sun Sep 27, 2009 2:54 pm

Doh!
Can't believe I missed that.
Thanks

larztheloser · Post by **larztheloser** » Thu Oct 08, 2009 9:46 pm

I still think the suggestion has merit. Or at least the ability to convert a texture to a sort of virtual io::IReadFile.

What I have is a texture. Currently, as I understand it, it is not possible to convert that texture to a height map for a terrain without saving the file (hope I'm not missing something). If I didn't have to save the file the would be useful.

bitplane · Post by **bitplane** » Fri Oct 09, 2009 11:09 pm

Doing it using textures is very sloppy, they exist in video RAM and the terrain vertices are not created there. Once we have HDR loader support it would be sensible to allow floating point (and standard) IImages though.

Please add this to the feature request tracker so we don't forget!

larztheloser · Post by **larztheloser** » Sat Oct 10, 2009 1:29 am

An IImage would do just as well (Just trying to do simple perlin noise random terrains).

hybrid · Post by **hybrid** » Thu Oct 15, 2009 11:17 am

You don't need to save to a file, just copy it into an IImage and read the data (via memory read file) back as a RAW heightmap.