buildTree

void buildTree (  const std::vector< T * > &  objs, int  maxDepth = 0, int  maxObjs = 1 )    Builds a tree containing the given objects. The maxDepth attribute specifies the maximum depth of the tree, or if it is set to 0 the depth is automatically deducted from the number of objects using the formula on p204 in PBRT (Pharr&Humphreys).

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