Matt Williams f98959f92a Add a new pickVoxel function. ...

Hopefully this pickVoxel function will fulfil most most need with
raycasting which aren't covered by the existing raycast functions.

It's essentially a wrapper around the current functions, using a custom
functor to store the position of a solid voxel as well as the previous
empty voxel. It doesn't require the user to provide a functor of their own,
just the value that they've assigned to empty voxels.

As well as the function itself, we also have a unit test as well as it
being built in the bindings.

2013-05-01 22:28:46 +01:00

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