/// <summary>
/// These functions are meant to eliminate blocks that cannot / should not exist
/// </summary>
/// <param name="block">The block to validate</param>
/// <param name="grid">The voxelgrid</param>
/// <returns>Can the block be added or not</returns>
private bool Validate(Block block, Grid3D grid)
{
bool valid = true;
valid = valid && grid.CanBlockExist(block);
valid = valid && CheckMinConnPoints(block, grid);
//valid = valid && ConnectedPath(block, grid);
//add more rules
return(valid);
}