void ZQuadTree::_FrustumCull(CGeoMapData &pHeightMap, Point &bottomLeft, CFrustum& pFrustum)
{
int ret;
ret = _IsInFrustum(pHeightMap, bottomLeft, pFrustum);
switch(ret)
{
case FRUSTUM_COMPLETELY_IN:
m_bCulled = false;
return;
case FRUSTUM_PRTIALLY_IN:
m_bCulled = false;
break;
case FRUSTUM_OUT:
m_bCulled = true;
return;
}
if(m_pChild[0]) m_pChild[0] ->_FrustumCull(pHeightMap, bottomLeft, pFrustum);
if(m_pChild[1]) m_pChild[1] ->_FrustumCull(pHeightMap, bottomLeft, pFrustum);
if(m_pChild[2]) m_pChild[2] ->_FrustumCull(pHeightMap, bottomLeft, pFrustum);
if(m_pChild[3]) m_pChild[3] ->_FrustumCull(pHeightMap, bottomLeft, pFrustum);
}
void AVQuadTree::_FrustumCull(TERRAIN_VERTEX *pHeightMap, AVFrustum *pFrustum )
{
int result = _IsInFrustum(pHeightMap, pFrustum);
if(result == FRUSTUM_TYPE_COMPLETE)
{
m_bCulled = false;
return;
}
else if(result == FRUSTUM_TYPE_COMPLETELY)
m_bCulled = false;
else // FRUSTUM_TYPE_NO
{ m_bCulled = true; return; }
for(int i=0; i<4; i++)
if(m_pChild[i])
m_pChild[i]->_FrustumCull(pHeightMap, pFrustum);
}
// _IsInFrustum()함수의 결과에 따라 프러스텀 컬링 수행
void ZQuadTree::_FrustumCull( TERRAINVERTEX* pHeightMap, ZFrustum* pFrustum )
{
int ret;
ret = _IsInFrustum( pHeightMap, pFrustum );
switch( ret )
{
case FRUSTUM_COMPLETELY_IN : // 프러스텀에 완전포함, 하위노드 검색 필요없음
m_bCulled = FALSE;
return;
case FRUSTUM_PARTIALLY_IN : // 프러스텀에 일부포함, 하위노드 검색 필요함
m_bCulled = FALSE;
break;
case FRUSTUM_OUT : // 프러스텀에서 완전벗어남, 하위노드 검색 필요없음
m_bCulled = TRUE;
return;
}
if( m_pChild[0] ) m_pChild[0]->_FrustumCull( pHeightMap, pFrustum );
if( m_pChild[1] ) m_pChild[1]->_FrustumCull( pHeightMap, pFrustum );
if( m_pChild[2] ) m_pChild[2]->_FrustumCull( pHeightMap, pFrustum );
if( m_pChild[3] ) m_pChild[3]->_FrustumCull( pHeightMap, pFrustum );
}
