Method GetIntersectionPoints

trinity/Resources/TriGeometryRes.cpp:1632–1765

}

bool TriGeometryRes::GetIntersectionPoints( const Vector3* pos, const Vector3* dir, Vector3* hitpointNear, Vector3* hitpointNearNormal, Vector3* hitpointFar, Vector3* hitpointFarNormal, int* boneIndexNear, int* boneIndexFar, unsigned int areaIx )
{
	CCP_STATS_ZONE( __FUNCTION__ );

	USE_MAIN_THREAD_RENDER_CONTEXT();

	*boneIndexFar = *boneIndexNear = -1;
	int boneIndex = 0;
	float minDist = FLT_MAX;
	float maxDist = FLT_MIN;
	bool result = false;

	for( size_t i = 0; i < m_meshes.size(); i++ )
	{
		if( m_meshes[i] == NULL )
		{
			continue;
		}

		//Get the first LOD.
		auto& lod = m_meshes[i]->m_lods[0];

		const uint8_t* pVertices;
		const uint8_t* pIndices;

		int vertSize = m_meshes[i]->m_bytesPerVertex;
		if( FAILED( lod->m_vertexAllocation.MapForReading( pVertices, renderContext ) ) )
		{
			return 0;
		}
		ON_BLOCK_EXIT( [&] { lod->m_vertexAllocation.UnmapForReading( renderContext ); } );
		if( FAILED( lod->m_indexAllocation.MapForReading( pIndices, renderContext ) ) )
		{
			return false;
		}
		ON_BLOCK_EXIT( [&] { lod->m_indexAllocation.UnmapForReading( renderContext ); } );

		const uint16_t* pShortIndices = (uint16_t*)pIndices;
		const uint32_t* pLongIndices = (uint32_t*)pIndices;

		Tr2VertexDefinition decl;
		if( !Tr2EffectStateManager::GetVertexDeclarationElements( m_meshes[i]->m_vertexDeclarationHandle, decl ) )
		{
			return false;
		}
		const Tr2VertexDefinition::Item* const position = decl.Find( decl.POSITION );
		if( !position )
		{
			return false;
		}

		const Tr2VertexDefinition::Item* const blendIndices = decl.Find( decl.BLENDINDICES );
		int numPrim = lod->m_primitiveCount;
		auto currentIndex = 0;
		if( areaIx != -1 )
		{
			if( areaIx >= lod->m_areas.size() )
			{