InspectorBVH.cc

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#include <esg/InspectorBVH.h>

using namespace esg;

const Geometry* InspectorBVH::firstElement()
{
    if (!_pAggregate || !((BVH*)_pAggregate)->_root) return NULL;

    _pActNode = ((BVH*)_pAggregate)->_root;
    _actDepth = 0;

    while (_actDepth < _depth && !_pActNode->leaf) {
        _pActNode = _pActNode->leftChild;
        _actDepth++;
    }
    
    return _pActNode->bv;
}

const Geometry* InspectorBVH::nextElement()
{
    if (!_pActNode) return NULL;

    while (_pActNode->parent &&
           _pActNode->parent->rightChild == _pActNode) // backtrack
    {
        _pActNode = _pActNode->parent;
        _actDepth--;
    }

    if (!_pActNode->parent) return NULL;

    _pActNode = _pActNode->parent->rightChild;
    while (_actDepth < _depth && !_pActNode->leaf) {
        _pActNode = _pActNode->leftChild;
        _actDepth++;
    }

    return _pActNode->bv;
}

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