void ManipulatorTerrain::OnEdit( float dt )
{
assert(m_curEditMode != eTerrainEditMode_None);
//第0层不能编辑BlendMap,应该从第1层开始
if(m_curEditMode == eTerrainEditMode_Splat && m_curEditLayer == 0)
return;
Ogre::Terrain* pTerrain = ManipulatorSystem.GetScene()->GetTerrain();
const Vector3 brushPos = m_brush[m_curBrushIndex]->GetPosition();
Vector3 tsPos;
pTerrain->getTerrainPosition(brushPos, &tsPos);
float brushSizeW, brushSizeH;
m_brush[m_curBrushIndex]->GetDimension(brushSizeW, brushSizeH);
float worldSize = GetWorldSize();
brushSizeW /= worldSize;
brushSizeH /= worldSize;
int multiplier;
Ogre::TerrainLayerBlendMap* layer = nullptr;
if(m_curEditMode == eTerrainEditMode_Deform)
{
multiplier = pTerrain->getSize() - 1;
}
else
{
multiplier = pTerrain->getLayerBlendMapSize();
layer = pTerrain->getLayerBlendMap(m_curEditLayer);
}
long startx = (long)((tsPos.x - brushSizeW / 2) * multiplier);
long starty = (long)((tsPos.y - brushSizeH / 2) * multiplier);
long endx = (long)((tsPos.x + brushSizeW / 2) * multiplier);
long endy= (long)((tsPos.y + brushSizeH / 2) * multiplier);
startx = max(startx, 0L);
starty = max(starty, 0L);
endx = min(endx, (long)multiplier);
endy = min(endy, (long)multiplier);
for (long y = starty; y <= endy; ++y)
{
for (long x = startx; x <= endx; ++x)
{
float tsXdist = (x / multiplier) - tsPos.x;
float tsYdist = (y / multiplier) - tsPos.y;
if(m_curEditMode == eTerrainEditMode_Deform)
{
float* pData = pTerrain->getHeightData();
pData[y*GetMapSize()+x] += 100.0f * dt;
}
else
{
float* pData = layer->getBlendPointer();
size_t imgY = multiplier - y;
float newValue = pData[imgY*multiplier+x] + dt;
newValue = Ogre::Math::Clamp(newValue, 0.0f, 1.0f);
pData[imgY*multiplier+x] = newValue;
}
}
}
if(m_curEditMode == eTerrainEditMode_Deform)
{
Ogre::Rect rect(startx, starty, endx, endy);
pTerrain->dirtyRect(rect);
pTerrain->update();
}
else
{
size_t imgStartY = multiplier - starty;
size_t imgEndY = multiplier - endy;
Ogre::Rect rect(startx, min(imgStartY,imgEndY), endx, max(imgStartY,imgEndY));
layer->dirtyRect(rect);
layer->update();
}
}
//-----------------------------------------------------------------------------------------
void CTerrainGroupEditor::_splat(CTerrainPageEditor *handle, Ogre::Vector3 &editpos, float timePassed)
{
Ogre::Rect brushrect, maprect;
Ogre::Terrain *terrain = static_cast<Ogre::Terrain*>(handle->getHandle());
int mBlendMapSize = terrain->getLayerBlendMapSize();
editpos.x *= (float)mBlendMapSize;
editpos.y = (1.0f - editpos.y) * (float)mBlendMapSize;
if(!_getEditRect(editpos, brushrect, maprect, mBlendMapSize))
return;
int mLayer = 0;
mLayer = handle->_getLayerID(mTextureDiffuse, mTextureNormal, mEditDirection);
if(mLayer == -1)
{
Ogre::String msg = handle->getName() + " already has the maximum number of supported texture layers.";
mSystem->DisplayMessageDialog(OTR(msg), DLGTYPE_OK);
return;
}
else if(mLayer == 0)
{
Ogre::TerrainLayerBlendMap *mBlendMaps[128];
float *mBlendDatas[128];
int mLayerMax = terrain->getLayerCount();
for(int l = 1;l < mLayerMax;l++)
{
mBlendMaps[l] = terrain->getLayerBlendMap(l);
mBlendDatas[l] = mBlendMaps[l]->getBlendPointer();
}
float maxVal;
int u;
int num;
for(u = mLayerMax-1;u > 0;u--)
{
mLayer = u;
maxVal = 0.0f;
for(int j = maprect.top;j < maprect.bottom;j++)
{
int mapPos = (j * mBlendMapSize) + maprect.left;
for(int i = maprect.left;i < maprect.right;i++)
{
maxVal += mBlendDatas[u][mapPos];
}
}
num = (maprect.top*mBlendMapSize);
num = (num+maprect.right)-(num+maprect.left);
if (maxVal > num)
break;
}
if (mLayer == 0)
return;
mEditDirection = true;
}
handle->_notifyModification(mLayer, maprect);
int mLayerMax = terrain->getLayerCount();
Ogre::TerrainLayerBlendMap *mBlendMaps[128];
float *mBlendDatas[128];
Ogre::TerrainLayerBlendMap *mCurrentBlendMap = terrain->getLayerBlendMap(mLayer);
float *mCurrentBlendData = mCurrentBlendMap->getBlendPointer();
for(int l = mLayer;l < mLayerMax;l++)
{
mBlendMaps[l] = terrain->getLayerBlendMap(l);
mBlendDatas[l] = mBlendMaps[l]->getBlendPointer();
}
float mRatio = (float)BRUSH_DATA_SIZE / (float)mBrushSize;
float brushPos;
int mapPos;
int right = brushrect.right;
brushrect.right = BRUSH_DATA_SIZE - brushrect.left;
brushrect.left = BRUSH_DATA_SIZE - right;
float factor = mBrushIntensity * timePassed * 0.2f;
if(!mEditDirection)
{
int u;
float sum;
for(int j = maprect.top;j < maprect.bottom;j++)
{
brushPos = (brushrect.top + (int)((j - maprect.top) * mRatio)) * BRUSH_DATA_SIZE;
brushPos += brushrect.right;
mapPos = (j * mBlendMapSize) + maprect.left;
for(int i = maprect.left;i < maprect.right;i++)
{
brushPos -= mRatio;
assert(mapPos < (mBlendMapSize * mBlendMapSize) && mapPos >= 0);
assert((int)brushPos < (BRUSH_DATA_SIZE * BRUSH_DATA_SIZE) && (int)brushPos >= 0);
sum = 0.0f;
for(u = mLayer + 1;u < mLayerMax;u++)
sum += mBlendDatas[u][mapPos];
float val = mCurrentBlendData[mapPos] + (mBrushData[(int)brushPos] * factor);
sum += val;
if(sum > 1.0f)
{
float normfactor = 1.0f / (float)sum;
mCurrentBlendData[mapPos] = val * normfactor;
for(u = mLayer + 1;u < mLayerMax;u++)
mBlendDatas[u][mapPos] *= normfactor;
}
else
mCurrentBlendData[mapPos] = val;
++mapPos;
}
}
for(u = mLayer;u < mLayerMax;u++)
{
mBlendMaps[u]->dirtyRect(maprect);
mBlendMaps[u]->update();
}
}
else
{
for(int j = maprect.top;j < maprect.bottom;j++)
{
brushPos = (brushrect.top + (int)((j - maprect.top) * mRatio)) * BRUSH_DATA_SIZE;
brushPos += brushrect.right;
mapPos = (j * mBlendMapSize) + maprect.left;
for(int i = maprect.left;i < maprect.right;i++)
{
brushPos -= mRatio;
assert(mapPos < (mBlendMapSize * mBlendMapSize) && mapPos >= 0);
assert((int)brushPos < (BRUSH_DATA_SIZE * BRUSH_DATA_SIZE) && (int)brushPos >= 0);
float val = mCurrentBlendData[mapPos] - (mBrushData[(int)brushPos] * factor);
if(val < 0.0f)
val = 0.0f;
mCurrentBlendData[mapPos] = val;
++mapPos;
}
}
mCurrentBlendMap->dirtyRect(maprect);
mCurrentBlendMap->update();
}
}
//-----------------------------------------------------------------------------------------
void CTerrainGroupEditor::_splat(CTerrainPageEditor *handle, Ogre::Vector3 &editpos, float timePassed)
{
Ogre::Rect brushrect, maprect;
Ogre::Terrain *terrain = static_cast<Ogre::Terrain*>(handle->getHandle());
int mBlendMapSize = terrain->getLayerBlendMapSize();
editpos.x *= (float)mBlendMapSize;
editpos.y = (1.0f - editpos.y) * (float)mBlendMapSize;
if(!_getEditRect(editpos, brushrect, maprect, mBlendMapSize))
return;
int mLayer = 0;
mLayer = handle->_getLayerID(mTextureDiffuse, mTextureNormal, mEditDirection);
if(mLayer < 1)
return;
handle->_notifyModification(mLayer, maprect);
int mLayerMax = terrain->getLayerCount();
Ogre::TerrainLayerBlendMap *mBlendMaps[128];
float *mBlendDatas[128];
Ogre::TerrainLayerBlendMap *mCurrentBlendMap = terrain->getLayerBlendMap(mLayer);
float *mCurrentBlendData = mCurrentBlendMap->getBlendPointer();
for(int l = mLayer;l < mLayerMax;l++)
{
mBlendMaps[l] = terrain->getLayerBlendMap(l);
mBlendDatas[l] = mBlendMaps[l]->getBlendPointer();
}
float mRatio = (float)BRUSH_DATA_SIZE / (float)mBrushSize;
float brushPos;
int mapPos;
int right = brushrect.right;
brushrect.right = BRUSH_DATA_SIZE - brushrect.left;
brushrect.left = BRUSH_DATA_SIZE - right;
float factor = mBrushIntensity * timePassed * 0.2f;
if(!mEditDirection)
{
int u;
float sum;
for(int j = maprect.top;j < maprect.bottom;j++)
{
brushPos = (brushrect.top + (int)((j - maprect.top) * mRatio)) * BRUSH_DATA_SIZE;
brushPos += brushrect.right;
mapPos = (j * mBlendMapSize) + maprect.left;
for(int i = maprect.left;i < maprect.right;i++)
{
brushPos -= mRatio;
assert(mapPos < (mBlendMapSize * mBlendMapSize) && mapPos >= 0);
assert((int)brushPos < (BRUSH_DATA_SIZE * BRUSH_DATA_SIZE) && (int)brushPos >= 0);
sum = 0.0f;
for(u = mLayer + 1;u < mLayerMax;u++)
sum += mBlendDatas[u][mapPos];
float val = mCurrentBlendData[mapPos] + (mBrushData[(int)brushPos] * factor);
sum += val;
if(sum > 1.0f)
{
float normfactor = 1.0f / (float)sum;
mCurrentBlendData[mapPos] = val * normfactor;
for(u = mLayer + 1;u < mLayerMax;u++)
mBlendDatas[u][mapPos] *= normfactor;
}
else
mCurrentBlendData[mapPos] = val;
++mapPos;
}
}
for(u = mLayer;u < mLayerMax;u++)
{
mBlendMaps[u]->dirtyRect(maprect);
mBlendMaps[u]->update();
}
}
else
{
for(int j = maprect.top;j < maprect.bottom;j++)
{
brushPos = (brushrect.top + (int)((j - maprect.top) * mRatio)) * BRUSH_DATA_SIZE;
brushPos += brushrect.right;
mapPos = (j * mBlendMapSize) + maprect.left;
for(int i = maprect.left;i < maprect.right;i++)
{
brushPos -= mRatio;
assert(mapPos < (mBlendMapSize * mBlendMapSize) && mapPos >= 0);
assert((int)brushPos < (BRUSH_DATA_SIZE * BRUSH_DATA_SIZE) && (int)brushPos >= 0);
float val = mCurrentBlendData[mapPos] - (mBrushData[(int)brushPos] * factor);
if(val < 0.0f)
val = 0.0f;
mCurrentBlendData[mapPos] = val;
++mapPos;
}
}
mCurrentBlendMap->dirtyRect(maprect);
mCurrentBlendMap->update();
}
}
