void
IntersectGrids::refresh(void)
{
GridSelection* selection = static_cast<GridSelection *>(
getSceneManipulator()->_getSelection("GridSelection"));
const GridSelection::GridMap &mGrids = selection->getGrids();
TerrainData *terrainData = getTerrainData();
if (!mGrids.empty())
{
GridSelection::GridMap::const_iterator it = mGrids.begin();
while (it != mGrids.end())
{
// 取得这个grid的四个角的坐标
int minx = it->second.x;
int minz = it->second.z;
int maxx = minx+1;
int maxz = minz+1;
// 判断是否翻转了，因为翻转了会改变顶点的高度
if ( terrainData->getGridInfo(minx, minz).flags & TerrainData::GridInfo::FlipDiagonal )
{
// 第一个三角形
mPosArray.push_back(terrainData->_getPosition(minx,minz)-mIntersectGridsNode->getPosition());
mPosArray.push_back(terrainData->_getPosition(minx,maxz)-mIntersectGridsNode->getPosition());
mPosArray.push_back(terrainData->_getPosition(maxx,maxz)-mIntersectGridsNode->getPosition());
// 第二个三角形
mPosArray.push_back(terrainData->_getPosition(maxx,minz)-mIntersectGridsNode->getPosition());
mPosArray.push_back(terrainData->_getPosition(minx,minz)-mIntersectGridsNode->getPosition());
mPosArray.push_back(terrainData->_getPosition(maxx,maxz)-mIntersectGridsNode->getPosition());
}
else
{
// 第一个三角形
mPosArray.push_back(terrainData->_getPosition(minx,minz)-mIntersectGridsNode->getPosition());
mPosArray.push_back(terrainData->_getPosition(minx,maxz)-mIntersectGridsNode->getPosition());
mPosArray.push_back(terrainData->_getPosition(maxx,minz)-mIntersectGridsNode->getPosition());
// 第二个三角形
mPosArray.push_back(terrainData->_getPosition(maxx,minz)-mIntersectGridsNode->getPosition());
mPosArray.push_back(terrainData->_getPosition(minx,maxz)-mIntersectGridsNode->getPosition());
mPosArray.push_back(terrainData->_getPosition(maxx,maxz)-mIntersectGridsNode->getPosition());
}
++it;
}
intersectGrids->fillPosition(mPosArray);
mPosArray.clear();
}
}
void TerrainSelectionGrids::refresh(void)
{
// 对当前所有的GridSelection进行重绘
GridSelections::const_iterator listIterator = mGridSelectionList.begin();
while ( listIterator != mGridSelectionList.end() )
{
GridSelection* selection = *listIterator;
const GridSelection::GridMap &mGrids = selection->getGrids();
TerrainData *terrainData = getTerrainData();
if (!mGrids.empty())
{
GridSelection::GridMap::const_iterator it = mGrids.begin();
Ogre::Vector3 sceneNodePos = mIntersectGridsNode->getPosition();
while (it != mGrids.end())
{
// 取得这个grid的四个角的坐标
int minx = it->second.x;
int minz = it->second.z;
int maxx = minx+1;
int maxz = minz+1;
// 判断是否翻转了，因为翻转了会改变顶点的高度
if ( terrainData->getGridInfo(minx, minz).flags & TerrainData::GridInfo::FlipDiagonal )
{
// 第一个三角形
mPosArray.push_back(terrainData->_getPosition(minx,minz)-sceneNodePos);
mPosArray.push_back(terrainData->_getPosition(minx,maxz)-sceneNodePos);
mPosArray.push_back(terrainData->_getPosition(maxx,maxz)-sceneNodePos);
// 第二个三角形
mPosArray.push_back(terrainData->_getPosition(maxx,minz)-sceneNodePos);
mPosArray.push_back(terrainData->_getPosition(minx,minz)-sceneNodePos);
mPosArray.push_back(terrainData->_getPosition(maxx,maxz)-sceneNodePos);
}
else
{
// 第一个三角形
mPosArray.push_back(terrainData->_getPosition(minx,minz)-sceneNodePos);
mPosArray.push_back(terrainData->_getPosition(minx,maxz)-sceneNodePos);
mPosArray.push_back(terrainData->_getPosition(maxx,minz)-sceneNodePos);
// 第二个三角形
mPosArray.push_back(terrainData->_getPosition(maxx,minz)-sceneNodePos);
mPosArray.push_back(terrainData->_getPosition(minx,maxz)-sceneNodePos);
mPosArray.push_back(terrainData->_getPosition(maxx,maxz)-sceneNodePos);
}
++it;
}
}
++listIterator;
}
intersectGrids->fillPosition(mPosArray);
mPosArray.clear();
}
