Subdivision

I am currently working with a grasshopper definition that creates voxels from a brep and then creates a basic truss system from the voxels.

At the moment the voxels come out at the same scale.

I however want the voxels/truss system to increase in resolution around areas close to the edge of the mountain. And then remain larger from a point in the centre or core.

Attached is the definition and images of how i wish the project to look

Any help would be greatly appreciated