How to create a "gradient mosaic" (voronoi) on a wall

[theark1]

Hi there,

 

I need to create a mosaic on a wall, using a "voronoi" technique (therefore not the usual square tessarae!)

 

This mosaic will be made of very tiny small pieces of different colours, concentrated along the central opening in the wall. Moving away from the entrance, these tiles gradually get bigger and farer from each others, leaving empty spaces among them.

 

I posted a quick sketch to explain better what I want to do.

 

Do you have any idea how to reach this kind of result?

 

At the moment I am using the unwrapping method plus Photoshop, but it is taking a lot of time.

 

Thanks in advance.

 

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[Lewis Garrison]

What program are you using? I've achieved this using Rhino and a Grasshopper definition that uses the door as an attractor that controls scale .