C++ (Cpp) Terrain::dirtyRect Examples

Example #1

File: TerrainGroupEditorUpdate.cpp Project: xubingyue/Ogitor

//-----------------------------------------------------------------------------------------
void CTerrainGroupEditor::_deform(CTerrainPageEditor *handle, Ogre::Vector3 &editpos, float timePassed)
{
    Ogre::Rect brushrect, maprect;
    editpos.x *= (float)(mMapSize->get() - 1);
    editpos.y *= (float)(mMapSize->get() - 1);

    if(!_getEditRect(editpos, brushrect, maprect, mMapSize->get()))
        return;

    handle->_notifyModification(-1, maprect);

    Ogre::Terrain *terrain = static_cast<Ogre::Terrain*>(handle->getHandle());

    float *mHeightData = terrain->getHeightData();

    if(mEditDirection)
        timePassed *= -1.0f;

    float mRatio = (float)BRUSH_DATA_SIZE / (float)mBrushSize;
    float brushPos;
    int mapPos;
    for(int j = maprect.top;j < maprect.bottom;j++)
    {
        brushPos = (brushrect.top + (int)((j - maprect.top) * mRatio)) * BRUSH_DATA_SIZE;
        brushPos += brushrect.left;
        mapPos = (j * mMapSize->get()) + maprect.left;

        for(int i = maprect.left;i < maprect.right;i++)
        {
            assert(mapPos < (mMapSize->get() * mMapSize->get()) && mapPos >= 0);
            assert((int)brushPos < (BRUSH_DATA_SIZE * BRUSH_DATA_SIZE) && (int)brushPos >= 0);

            float val = mHeightData[mapPos] + (mBrushData[(int)brushPos] * mBrushIntensity * timePassed);

            assert(val < 10000.0f);
            assert(val > -10000.0f);

            mHeightData[mapPos] = val;
            ++mapPos;

            brushPos += mRatio;
        }
    }

    terrain->dirtyRect(maprect);
}

Example #2

File: ManipulatorTerrain.cpp Project: mavaL/MiniCraft

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();
	}
}