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
TerrainTileEditable::_notifyHeightModified(int xstart, int zstart, int xend, int zend)
{
assert(0 <= xstart && xstart < xend && xend <= mXSize+1);
assert(0 <= zstart && zstart < zend && zend <= mZSize+1);
if (mVertexDatas.empty())
{
// Nothing todo when buffer never initialised
return;
}
// TODO: (optimization) some grid may be need to recompute normal only
TerrainData* data = mOwner->getData();
Ogre::HardwareVertexBufferSharedPtr posNormBuffer = mVertexDatas.front()->vertexBufferBinding->getBuffer(0);
float* pPosNormBuffer = static_cast<float*>(posNormBuffer->lock(Ogre::HardwareBuffer::HBL_NORMAL));
float buffer[6];
int xsize = mXSize;
int zsize = mZSize;
int xbase = mXBase;
int zbase = mZBase;
for (int z = zstart; z < zend; ++z)
{
for (int x = xstart; x < xend; ++x)
{
Ogre::Vector3 v;
v = data->_getPosition(x+xbase, z+zbase);
buffer[0] = v.x; buffer[1] = v.y; buffer[2] = v.z;
v = data->_getNormal(x+xbase, z+zbase);
buffer[3] = v.x; buffer[4] = v.y; buffer[5] = v.z;
if (0 < z)
{
if (0 < x)
memcpy(pPosNormBuffer + (((z-1) * xsize + (x-1)) * 4 + 3) * 6, buffer, 6*sizeof(float));
if (x < xsize)
memcpy(pPosNormBuffer + (((z-1) * xsize + (x-0)) * 4 + 2) * 6, buffer, 6*sizeof(float));
}
if (z < zsize)
{
if (0 < x)
memcpy(pPosNormBuffer + (((z-0) * xsize + (x-1)) * 4 + 1) * 6, buffer, 6*sizeof(float));
if (x < xsize)
memcpy(pPosNormBuffer + (((z-0) * xsize + (x-0)) * 4 + 0) * 6, buffer, 6*sizeof(float));
}
}
}
posNormBuffer->unlock();
// re-compue bounding box
data->_computeTileBoundingBox(mBounds, xbase, zbase, xsize, zsize);
// trigger update of bounding box
getParentNode()->needUpdate();
}
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();
}
