//-----------------------------------------------------------------------------------------
bool CTerrainGroupEditor::update(float timePassed)
{
if(mEditActive && mDecalFrustum->getVisible())
{
mEditDirection = CViewportEditor::mViewKeyboard[CViewportEditor::mSpecial.SPK_REVERSE_UPDATE];
Ogre::Vector3 cursorpos = mDecalNode->getPosition();
Ogre::Terrain *terrain;
Ogre::Vector3 editpos;
Ogre::TerrainGroup::TerrainList terrainList;
Ogre::Real halfBrushSizeWorldSpace = (Ogre::Real)(mWorldSize->get() * mBrushSize) / (Ogre::Real)(mMapSize->get()) / 2.0f;
Ogre::Sphere sphere(cursorpos, halfBrushSizeWorldSpace);
mHandle->sphereIntersects(sphere, &terrainList);
mModificationRect.merge(Ogre::Rect(cursorpos.x - halfBrushSizeWorldSpace, cursorpos.z - halfBrushSizeWorldSpace, cursorpos.x + halfBrushSizeWorldSpace, cursorpos.z + halfBrushSizeWorldSpace));
bool groupUpdateNeeded = false;
float avg_total = 0.0f;
float sample_count_total = 0;
if(mEditMode == EM_SMOOTH)
{
for (Ogre::TerrainGroup::TerrainList::iterator ti = terrainList.begin(); ti != terrainList.end(); ++ti)
{
terrain = *ti;
terrain->getTerrainPosition(cursorpos, &editpos);
CTerrainPageEditor *terED = 0;
for(NameObjectPairList::iterator it = mChildren.begin(); it != mChildren.end();it++)
{
if(it->second->getHandle() == (void*)terrain)
{
terED = static_cast<CTerrainPageEditor*>(it->second);
break;
}
}
float avg = 0.0f;
int sample_count = 0;
_calculatesmoothingfactor(terED, editpos, avg, sample_count);
avg_total += avg;
sample_count_total += sample_count;
}
}
for (Ogre::TerrainGroup::TerrainList::iterator ti = terrainList.begin(); ti != terrainList.end(); ++ti)
{
terrain = *ti;
terrain->getTerrainPosition(cursorpos, &editpos);
CTerrainPageEditor *terED = 0;
for(NameObjectPairList::iterator it = mChildren.begin(); it != mChildren.end();it++)
{
if(it->second->getHandle() == (void*)terrain)
{
terED = static_cast<CTerrainPageEditor*>(it->second);
break;
}
}
if(mEditMode == EM_DEFORM)
{
_deform(terED, editpos, timePassed);
groupUpdateNeeded |= true;
}
else if(mEditMode == EM_SMOOTH)
{
if(sample_count_total)
{
_smooth(terED, editpos, avg_total / (float)sample_count_total, timePassed);
groupUpdateNeeded |= true;
}
}
else if(mEditMode == EM_SPLAT)
_splat(terED, editpos, timePassed);
else if(mEditMode == EM_PAINT)
_paint(terED, editpos, timePassed);
else if(mEditMode == EM_SPLATGRASS)
_splatGrass(terED, editpos, timePassed);
}
if(groupUpdateNeeded)
mHandle->update();
mOgitorsRoot->SetSceneModified(true);
}
if(mPGHandle)
mPGHandle->update();
return false;
}
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();
}
}