|Message: Re: Manipulate Single Voxel (Touchable) to have different color||Not Logged In (login)|
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A solution some of us use is to modify the color during the ComputeMaterial call.
Presumably, you are calling ComputeMaterial to set the specific voxel material in your parameterization. In the same method you can reset the color attribute. pvol->GetLogicalVolume()->SetVisAttributes(…)
But to avoid ending up with too many vis attributes, make sure to create your vis attributes in advance and then just re-use them for all appropriately colored voxels. Otherwise, even if you have 4000 voxels that are all blue, you'll end up making 4000 separate vis attributes for blue.