Modifying/Engraving the Terrain - Cracks, rivers, etc.

[Zonic Blazer]

Hi everyone.

I've been trying to figure out how to manually modify my terrain files in TG2, like adding deep cracks, rivers, etc. -- sort of engraving the terrain. I suspect that the easiest way of doing this would be by using/generating and importing heightfields..? Have any of you got any tips on how to use TG2-shaders for these and other similar tasks?


Thanks a bundle,

David.

[rcallicotte]

Do some searches on cracks and rivers.  Negative displacements, when used correctly can do a lot.  Functions can be used and I seem to remember someone recently uploaded something with voronoi cracks...a TGD or a TGC.  Check the File section, too.

[Mr_Lamppost]

Do some searches on cracks and rivers.  Negative displacements, when used correctly can do a lot.  Functions can be used and I seem to remember someone recently uploaded something with voronoi cracks...a TGD or a TGC.  Check the File section, too.

That night have been me, if this is what you are thinking of:
http://forums.planetside.co.uk/index.php?topic=5498.0
Very basic function (Voroni), based mud cracks.

This is a better example of using Voronoi to add deep cracks to rock:
http://www.terragen.org/index.php?action=tpmod;dl=item447

There are plenty of other examples so as calico says do some hunting around.

[rcallicotte]

Mr. L - It was you!! 

[Zonic Blazer]

Okay, thanks for guidance! 

David.