C++ Image::loadDynamicImage方法代码示例

	//-----------------------------------------------------------------------
	void Noise3D::noise2img(Ogre::ushort dimension)
	{
		double x = 0.0;
		double y = 0.0;
		double step = 1.0 / (double)dimension;
		size_t buffSize = 4 * dimension * dimension; // Assume Image of pixelformat 32 bits (i.e. PF_R8G8B8A8)
		Ogre::uchar* buff = new Ogre::uchar[buffSize];
		size_t p = 0;
		while (p < buffSize)
		{
			Ogre::uchar n = (Ogre::uchar)(255 * noise(x, y, 0.5));
			buff[p] = n;
			buff[p+1] = n;
			buff[p+2] = n;
			buff[p+3] = n;
			p += 4;

			x += step;
			if (x >= 1.0)
			{
				x = 0.0;
				y += step;
			}
		}
		Ogre::Image* image = new Ogre::Image();
		image->loadDynamicImage(buff, dimension, dimension, 0, Ogre::PF_R8G8B8A8 , false, 1, 0);
		image->save("noise2img.png");
		delete image;
		delete [] buff;
	}

Ogre::MaterialPtr TextureManager::makeOgreMaterial(int16_t MaterialTypeID, int16_t TextureID)
{
    Ogre::MaterialPtr NewMaterial = Ogre::MaterialManager::getSingleton().create("GrassMaterial", "General", true);

    Ogre::Image* NewImage = new Ogre::Image(); // Delete?
    uint16_t ImageID = IMAGE->GenerateMaterialImage(MaterialTypeID, TextureID);
    uint8_t* iData = IMAGE->getImageData(ImageID);
    uint16_t Width = IMAGE->getImageWidth(ImageID);
    uint16_t Height = IMAGE->getImageHeight(ImageID);


    NewImage->loadDynamicImage(iData, Width, Height, Ogre::PF_A8R8G8B8);
    Ogre::TexturePtr NewTex = Ogre::TextureManager::getSingleton().loadImage("TextureX", "General", *NewImage, Ogre::TEX_TYPE_2D, 1);

    Ogre::Technique* FirstTechnique = NewMaterial->getTechnique(0);
    Ogre::Pass* FirstPass = FirstTechnique->getPass(0);
    FirstPass->setLightingEnabled(false);

    Ogre::TextureUnitState* TextureUnit = FirstPass->createTextureUnitState();
    TextureUnit->setTextureName("TextureX", Ogre::TEX_TYPE_2D);

    delete NewImage;

    return NewMaterial;
}

	void OgreTexture::saveToFile(const std::string& _filename)
	{
		Ogre::uchar* readrefdata = (Ogre::uchar*)lock(TextureUsage::Read);

		Ogre::Image img;
		img = img.loadDynamicImage(readrefdata, mTexture->getWidth(), mTexture->getHeight(), mTexture->getFormat());
		img.save(_filename);

		unlock();
	}

void WebView::captureImage(const std::string& filename)
{
#ifdef HAVE_AWESOMIUM
	Ogre::Image result;

	int bpp = isWebViewTransparent? 4 : 3;

	unsigned char* buffer = OGRE_ALLOC_T(unsigned char, viewWidth * viewHeight * bpp, Ogre::MEMCATEGORY_GENERAL);

	webView->render(buffer, viewWidth * bpp, bpp);

	result.loadDynamicImage(buffer, viewWidth, viewHeight, 1, isWebViewTransparent? Ogre::PF_BYTE_BGRA : Ogre::PF_BYTE_BGR, false);
	result.save(Awesomium::WebCore::Get().getBaseDirectory() + "\\" + filename);

	OGRE_FREE(buffer, Ogre::MEMCATEGORY_GENERAL);
#endif
}

void Simple::addLightingPass(Ogre::Technique* technique, std::set<std::string>& managedTextures) const
{
	Ogre::Pass* lightingPass = technique->createPass();

	lightingPass->setSceneBlending(Ogre::SBT_MODULATE);
	lightingPass->setLightingEnabled(false);

	Ogre::TextureUnitState * textureUnitStateSplat = lightingPass->createTextureUnitState();

	//we need an unique name for our alpha texture
	std::stringstream lightingTextureNameSS;
	lightingTextureNameSS << technique->getParent()->getName() << "_lighting";
	const Ogre::String lightingTextureName(lightingTextureNameSS.str());

	Ogre::TexturePtr texture = static_cast<Ogre::TexturePtr>(Ogre::Root::getSingletonPtr()->getTextureManager()->getByName(lightingTextureName));
	if (texture.isNull()) {
		texture = Ogre::Root::getSingletonPtr()->getTextureManager()->createManual(lightingTextureName, "General", Ogre::TEX_TYPE_2D, mPage.getBlendMapSize(), mPage.getBlendMapSize(), 1, Ogre::PF_L8, Ogre::TU_DYNAMIC_WRITE_ONLY);
		managedTextures.insert(texture->getName());
	}

	Ogre::Image ogreImage;
	ogreImage.loadDynamicImage(const_cast<unsigned char*>(mLightingImage->getData()), mLightingImage->getResolution(), mLightingImage->getResolution(), 1, Ogre::PF_L8);

	texture->loadImage(ogreImage);

	//blit the whole image to the hardware buffer
	Ogre::PixelBox sourceBox(ogreImage.getPixelBox());
	//blit for each mipmap
	for (unsigned int i = 0; i <= texture->getNumMipmaps(); ++i) {
		Ogre::HardwarePixelBufferSharedPtr hardwareBuffer(texture->getBuffer(0, i));
		hardwareBuffer->blitFromMemory(sourceBox);
	}

	textureUnitStateSplat->setTextureName(texture->getName());

	textureUnitStateSplat->setTextureCoordSet(0);
	textureUnitStateSplat->setTextureAddressingMode(Ogre::TextureUnitState::TAM_CLAMP);
	textureUnitStateSplat->setTextureFiltering(Ogre::TFO_ANISOTROPIC);

}

    void GlobalMap::exploreCell(int cellX, int cellY)
    {
        float originX = static_cast<float>((cellX - mMinX) * mCellSize);
        // NB y + 1, because we want the top left corner, not bottom left where the origin of the cell is
        float originY = static_cast<float>(mHeight - (cellY + 1 - mMinY) * mCellSize);

        if (cellX > mMaxX || cellX < mMinX || cellY > mMaxY || cellY < mMinY)
            return;

        Ogre::TexturePtr localMapTexture = Ogre::TextureManager::getSingleton().getByName("Cell_"
            + boost::lexical_cast<std::string>(cellX) + "_" + boost::lexical_cast<std::string>(cellY));

        if (!localMapTexture.isNull())
        {
            int mapWidth = localMapTexture->getWidth();
            int mapHeight = localMapTexture->getHeight();
            mOverlayTexture->load();
            mOverlayTexture->getBuffer()->blit(localMapTexture->getBuffer(), Ogre::Image::Box(0,0,mapWidth,mapHeight),
                         Ogre::Image::Box(static_cast<Ogre::uint32>(originX), static_cast<Ogre::uint32>(originY),
                         static_cast<Ogre::uint32>(originX + mCellSize), static_cast<Ogre::uint32>(originY + mCellSize)));

            Ogre::Image backup;
            std::vector<Ogre::uchar> data;
            data.resize(mCellSize*mCellSize*4, 0);
            backup.loadDynamicImage(&data[0], mCellSize, mCellSize, Ogre::PF_A8B8G8R8);

            localMapTexture->getBuffer()->blitToMemory(Ogre::Image::Box(0,0,mapWidth,mapHeight), backup.getPixelBox());

            for (int x=0; x<mCellSize; ++x)
                for (int y=0; y<mCellSize; ++y)
                {
                    assert (originX+x < mOverlayImage.getWidth());
                    assert (originY+y < mOverlayImage.getHeight());
                    assert (x < int(backup.getWidth()));
                    assert (y < int(backup.getHeight()));
                    mOverlayImage.setColourAt(backup.getColourAt(x, y, 0), static_cast<size_t>(originX + x), static_cast<size_t>(originY + y), 0);
                }
        }
    }

void MapView::createTerrainFromFile()
{
	if (mMap->getTexture().size())
	{
		mMaterial = (Ogre::MaterialPtr)
			Ogre::MaterialManager::getSingleton().getByName(mMap->getTexture());

		if (mMaterial.isNull())
		{
			mMaterial = (Ogre::MaterialPtr)
				Ogre::MaterialManager::getSingleton().create(mMap->getTexture(), "General");
			mMaterial->getTechnique(0)->getPass(0)->createTextureUnitState(mMap->getTexture());
			mMaterial->getTechnique(0)->getPass(0)->setVertexColourTracking(Ogre::TVC_AMBIENT);
		}
	}
	else
	{
		mMaterial = (Ogre::MaterialPtr)
			Ogre::MaterialManager::getSingleton().getByName("terrain");
	}

	Ogre::Image img;
	Ogre::uchar* data = new Ogre::uchar[mMap->getTerrainData().size()];

	float min = mMap->getTerrainData()[0];
	float max = mMap->getTerrainData()[0];

	for (size_t i = 1; i < mMap->getTerrainData().size(); ++i)
	{
		if (mMap->getTerrainData()[i] < min) min = mMap->getTerrainData()[i];
		else if (mMap->getTerrainData()[i] > max) max = mMap->getTerrainData()[i];
	}

	for (size_t i = 0; i < mMap->getTerrainData().size(); ++i)
	{
		data[i] = mMap->getTerrainData()[i];
	}

	img.loadDynamicImage(
		data,
		mMap->getTerrainSize().x,
		mMap->getTerrainSize().z,
		1, Ogre::PF_L8);

	// Save bitmap file.
	std::string name(Convert::ToString(mMap->getID()));
	img.save("..\\cache\\" + name + ".png");

	// Create config file.
	std::ofstream config(
		("..\\cache\\" + name + ".cfg").c_str(),
		std::ios::out | std::ios::trunc);

	config << "DetailTile=3" << "\n";
	config << "PageSource=Heightmap" << "\n";
	config << "Heightmap.image=" << "..\\cache\\" << name << ".png" << "\n";
	config << "PageSize=" << mMap->getTerrainSize().x << "\n";
	config << "TileSize=33" << "\n";
	config << "MaxPixelError=3" << "\n";
	config << "PageWorldX=" << mMap->getSize().x << "\n";
	config << "PageWorldZ=" << mMap->getSize().z << "\n";
	config << "MaxHeight=255" << "\n";
	config << "MaxMipMapLevel=5" << "\n";
	config << "VertexNormals=yes" << "\n";
	config << "VertexColors=yes" << "\n";
	config << "VertexProgramMorph=yes" << "\n";
	config << "LODMorphStart=0.2" << "\n";
	config << "CustomMaterialName=" << mMaterial->getName() << "\n";

	config.close();

	delete[] data;

	mManager->setWorldGeometry("..\\cache\\" + name + ".cfg");
}

//.........这里部分代码省略.........

		mpCrowdObject->end();

		// Move to the next frame
		if ( crowdMember.mbReversing )
		{
			crowdMember.mFrameIdx--;
			if ( crowdMember.mFrameIdx < 0 )
			{
				crowdMember.mFrameIdx = 1;
				crowdMember.mbReversing = false;
			}
		}
		else
		{
			crowdMember.mFrameIdx++;
			if ( crowdMember.mFrameIdx >= NUM_FRAMES_TO_RECORD )
			{
				crowdMember.mFrameIdx = NUM_FRAMES_TO_RECORD-1;
				crowdMember.mbReversing = true;
			}
		}
	}


	// Check to see if we can stop recording
	if ( mbRecording )
	{
		mRecordingFrameIdx++;
		if ( mRecordingFrameIdx >= NUM_FRAMES_TO_RECORD )
		{
			// Create a new crowd member
			Ogre::Image image;
			image.loadDynamicImage(
				mpImageData, SMALL_FRAME_WIDTH, NUM_FRAMES_TO_RECORD*SMALL_FRAME_HEIGHT, 1, Ogre::PF_A4L4 );

			std::stringstream ss;
			ss << "RecordedSequenceTex_" << numCrowdMembers;
			Ogre::String texName = ss.str();

			Ogre::TextureManager* pTextureMgr = Ogre::TextureManager::getSingletonPtr();
			Ogre::TexturePtr pTexture = pTextureMgr->loadImage( texName, Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, image );

			ss.clear();
			ss << "RecordedSequenceMat_" << numCrowdMembers;
			Ogre::String matName = ss.str();

			Ogre::MaterialManager* pMatMgr = Ogre::MaterialManager::getSingletonPtr();
			Ogre::MaterialPtr pSrcMat = (Ogre::MaterialPtr)pMatMgr->getByName( "Template/CutOut", Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME );
			Ogre::MaterialPtr pMat = pSrcMat->clone( matName ); //  (Ogre::MaterialPtr)pMatMgr->create( matName, Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME );

			pMat->getTechnique( 0 )->getPass( 0 )->removeAllTextureUnitStates();
			Ogre::TextureUnitState* pTex = pMat->getTechnique( 0 )->getPass( 0 )->createTextureUnitState( texName, 0 );
			pMat->getTechnique( 0 )->getPass( 0 )->addTextureUnitState( pTex );

			/*Ogre::Technique* pTech = pMat->getTechnique( 0 );
			pTech->setSceneBlending( Ogre::SBT_TRANSPARENT_ALPHA );

			Ogre::Pass *pPass = pTech->createPass();

			pPass->setLightingEnabled( false );

			pPass->setAmbient( 1.0, 1.0, 1.0 );
			pPass->setDiffuse( 1.0, 1.0, 1.0, 1.0 );
			pPass->setSpecular( 0.0, 0.0, 0.0, 0.0 );

void TerrainGeometryManager::initBlendMaps(int x, int z, Ogre::Terrain* terrain )
{
	bool debugBlendMaps = BOPT("DebugBlendMaps", false);

	int layerCount = terrain->getLayerCount();
	for (int i = 1; i < layerCount; i++)
	{
		blendLayerInfo_t &bi = blendInfo[i];

		if(bi.blendMapTextureFilename.empty()) continue;

		Ogre::Image img;
		//std::pair<uint8,uint8> textureIndex = terrain->getLayerBlendTextureIndex(i);
		//uint8 bti = terrain->getBlendTextureIndex(i);
		try
		{
			img.load(bi.blendMapTextureFilename, ResourceGroupManager::AUTODETECT_RESOURCE_GROUP_NAME);
		} catch(Exception &e)
		{
			LOG("Error loading blendmap: " + bi.blendMapTextureFilename + " : " + e.getFullDescription());
			continue;
		}

		TerrainLayerBlendMap *blendmap = terrain->getLayerBlendMap(i);

		// resize that blending map so it will fit
		Ogre::uint32 blendmapSize = terrain->getLayerBlendMapSize();
		if (img.getWidth() != blendmapSize)
			img.resize(blendmapSize, blendmapSize);

		// now to the ugly part
		float* ptr = blendmap->getBlendPointer();
		for (Ogre::uint32 z = 0; z != blendmapSize; z++)
		{
			for (Ogre::uint32 x = 0; x != blendmapSize; x++)
			{
				Ogre::ColourValue c = img.getColourAt(x, z, 0);
				float alpha = bi.alpha;
				if      (bi.blendMode == 'R')
					*ptr++ = c.r * alpha;
				else if (bi.blendMode == 'G')
					*ptr++ = c.g * alpha;
				else if (bi.blendMode == 'B')
					*ptr++ = c.b * alpha;
				else if (bi.blendMode == 'A')
					*ptr++ = c.a * alpha;
			}
		}
		blendmap->dirty();
		blendmap->update();
	}

	if (debugBlendMaps)
	{
		for (int i = 1; i < layerCount; i++)
		{
			Ogre::TerrainLayerBlendMap* blendMap = terrain->getLayerBlendMap(i);
			Ogre::uint32 blendmapSize = terrain->getLayerBlendMapSize();
			Ogre::Image img;
			unsigned short *idata = OGRE_ALLOC_T(unsigned short, blendmapSize * blendmapSize, Ogre::MEMCATEGORY_RESOURCE);
			float scale = 65535.0f;
			for (unsigned int x = 0; x < blendmapSize; x++)
				for (unsigned int z = 0; z < blendmapSize; z++)
					idata[x + z * blendmapSize] = (unsigned short)(blendMap->getBlendValue(x, blendmapSize - z) * scale);
			img.loadDynamicImage((Ogre::uchar*)(idata), blendmapSize, blendmapSize, Ogre::PF_L16);
			std::string fileName = "blendmap_layer_" + Ogre::StringConverter::toString(i) + ".png";
			img.save(fileName);
			OGRE_FREE(idata, Ogre::MEMCATEGORY_RESOURCE);
		}
	}
}

//.........这里部分代码省略.........
        // 计算最终的mini map的大小
        uint miniMapWidth = xIndex * mTexWidth;
        uint miniMapHeight = zIndex * mTexHeight;

        if ( miniMapWidth > 10000 || miniMapHeight > 10000 )
        {
            mLastErrorString = "texture size is out of range!";
            return false;
        }
        // 创建mini map所需的内存空间
        uchar* miniMapData = new uchar[miniMapWidth * miniMapHeight * Ogre::PixelUtil::getNumElemBytes(mOutPutFormat)];

        //// 初始的摄像机位置
        Real xPos = originPoint.x;
        Real zPos = originPoint.z;

        for ( int i=0; i<xIndex; ++i )
        {
            for ( int j=0; j<zIndex; ++j )
            {
                // 设置摄像机位置，并更新render texture的内容
                mCamera->setPosition(xPos, yPos, zPos);
                mRenderTexture->update();

                String fileName = mPath + mSceneBaseName + Ogre::StringConverter::toString(i)
                    + "_" + Ogre::StringConverter::toString(j) + "." + mTexExtension;

                // 输出小纹理文件
                mRenderTexture->writeContentsToFile(fileName);

                mTempOutputFileNames.push_back(fileName);

                // 读取刚创建的纹理
                Ogre::Image* tempImage = new Ogre::Image;
                
                tempImage->load(mSceneBaseName + Ogre::StringConverter::toString(i)
                    + "_" + Ogre::StringConverter::toString(j) + "." + mTexExtension, TEMP_GROUP_NAME);

                // 获取render texture中的内容
                uchar* tempImageData = tempImage->getData();

                // 定位在mini map中的左上角
                uint miniMapIndex = ( j * mTexHeight * miniMapWidth + i * mTexWidth ) * Ogre::PixelUtil::getNumElemBytes(mOutPutFormat);

                uchar* startData = miniMapData + miniMapIndex;

                for ( size_t height = 0; height < tempImage->getHeight(); ++height )
                {
                    for ( size_t width = 0; width < tempImage->getWidth(); ++width )
                    {
                        memcpy(startData, tempImageData, Ogre::PixelUtil::getNumElemBytes(mOutPutFormat));

                        startData += Ogre::PixelUtil::getNumElemBytes(mOutPutFormat);
                        tempImageData += Ogre::PixelUtil::getNumElemBytes( tempImage->getFormat() );
                    }
                    startData += (miniMapWidth - tempImage->getWidth()) * Ogre::PixelUtil::getNumElemBytes(mOutPutFormat);
                }

                delete tempImage;

                // 移动摄像机的z坐标
                if (mUseRealCameraAngle)
                {
                    zPos += (mInvertCameraDir * (projectSize)).z;
                    xPos += (mInvertCameraDir * (projectSize)).x;
                }
                else
                   zPos += mTileSize;
            }
            
            if (mUseRealCameraAngle)
            {
                xPos = originPoint.x;
                zPos = originPoint.z;

                xPos += (mMoveZDir * (mTileSize) * (i+1)).x;
                zPos += (mMoveZDir * (mTileSize) * (i+1)).z;
            }
            else
            {
                // 操作完每一列之后，重置摄像机的z坐标
                zPos = terrainData->mMinZ;

                // 移动摄像机的x坐标
                xPos += mTileSize;
            }
        } 

        // 保存mini map并输出
        Ogre::Image* miniMapImage = new Ogre::Image;
        miniMapImage->loadDynamicImage(miniMapData, miniMapWidth, miniMapHeight, 1, mOutPutFormat, true);

        miniMapImage->save(mPath + mOutFileName + "." + mTexExtension);

        delete miniMapImage;

        rgm.destroyResourceGroup(TEMP_GROUP_NAME);

        return true;
    }

// void TerrainPageSurfaceCompiler::addTextureUnitsToPass(Ogre::Pass* pass, const Ogre::String& splatTextureName) {
//
// 	if (getMaxTextureUnits() - pass->getNumTextureUnitStates() < 2 || pass->getParent()->getNumPasses() > 1)  {
// 		addPassToTechnique(pass->getParent(), splatTextureName);
// // 		S_LOG_WARNING("Trying to add texture units to pass with too few available texture unit states.");
// 		return;
// 	}
//
// 	S_LOG_VERBOSE("Adding new texture unit (detailtexture: " << mTextureName << " alphatexture: " << splatTextureName << ") to pass nr " << pass->getIndex() << " in technique for material " << pass->getParent()->getParent()->getName());
//
// /*	pass->setSelfIllumination(Ogre::ColourValue(1,1,1));
// 	pass->setAmbient(Ogre::ColourValue(1,1,1));
// 	pass->setDiffuse(Ogre::ColourValue(1,1,1));
// 	pass->setLightingEnabled(true);*/
// 	Ogre::TextureUnitState * textureUnitStateSplat = pass->createTextureUnitState();
//     textureUnitStateSplat->setTextureName(splatTextureName);
//
//     textureUnitStateSplat->setTextureCoordSet(0);
// 	textureUnitStateSplat->setTextureFiltering(Ogre::TFO_ANISOTROPIC);
// 	textureUnitStateSplat->setAlphaOperation(Ogre::LBX_SOURCE1, Ogre::LBS_TEXTURE, Ogre::LBS_TEXTURE);
// 	textureUnitStateSplat->setColourOperationEx(Ogre::LBX_SOURCE1, Ogre::LBS_CURRENT, Ogre::LBS_CURRENT);
//     textureUnitStateSplat->setTextureAddressingMode(Ogre::TextureUnitState::TAM_CLAMP);
// // 	textureUnitStateSplat->setColourOperationEx(Ogre::LBX_BLEND_DIFFUSE_ALPHA, Ogre::LBS_CURRENT, Ogre::LBS_TEXTURE);
// //	textureUnitStateSplat->setColourOperationEx(Ogre::LBX_BLEND_TEXTURE_ALPHA, Ogre::LBS_CURRENT, Ogre::LBS_TEXTURE);
//
// 	Ogre::TextureUnitState * textureUnitState = pass->createTextureUnitState();
//     textureUnitState->setTextureName(mTextureName);
//     textureUnitState->setTextureAddressingMode(Ogre::TextureUnitState::TAM_WRAP);
// /*	textureUnitState->setTextureCoordSet(0);*/
// 	textureUnitState->setTextureScale(0.025, 0.025);
// 	textureUnitState->setColourOperationEx(Ogre::LBX_BLEND_CURRENT_ALPHA, Ogre::LBS_TEXTURE, Ogre::LBS_CURRENT);
//
// /*	Ogre::TextureUnitState * alphaTextureState= pass->createTextureUnitState();
//     alphaTextureState->setTextureName(mTextureName);
// //     alphaTextureState->setTextureName(splatTextureName);
//     alphaTextureState->setTextureCoordSet(0);
// 	alphaTextureState->setTextureFiltering(Ogre::TFO_ANISOTROPIC);
//     alphaTextureState->setTextureAddressingMode(Ogre::TextureUnitState::TAM_CLAMP);
//  	alphaTextureState->setColourOperationEx(Ogre::LBX_BLEND_DIFFUSE_ALPHA, Ogre::LBS_CURRENT, Ogre::LBS_TEXTURE);
//
//
//
// // 	detailTextureState->setAlphaOperation(Ogre::LBX_SOURCE1, Ogre::LBS_TEXTURE, Ogre::LBS_TEXTURE);
// // 	detailTextureState->setColourOperationEx(Ogre::LBX_SOURCE1, Ogre::LBS_CURRENT, Ogre::LBS_CURRENT);
//
// 	Ogre::TextureUnitState * detailTextureState  = pass->createTextureUnitState();
//     detailTextureState ->setTextureName(splatTextureName);
// //     detailTextureState ->setTextureName(mTextureName);
//     detailTextureState ->setTextureAddressingMode(Ogre::TextureUnitState::TAM_WRAP);
// 	detailTextureState ->setTextureCoordSet(0);
// 	detailTextureState ->setTextureScale(0.01, 0.01);
// 	//detailTextureState ->setColourOperationEx(Ogre::LBX_BLEND_CURRENT_ALPHA, Ogre::LBS_TEXTURE, Ogre::LBS_CURRENT);*/
//
// }
//
Ogre::Pass* Simple::addPassToTechnique(const TerrainPageGeometry& geometry, Ogre::Technique* technique, const Layer& layer, std::set<std::string>& managedTextures) const
{
	//check if we instead can reuse the existing pass
	// 	if (technique->getNumPasses() != 0) {
	// 		Ogre::Pass* pass = technique->getPass(technique->getNumPasses() - 1);
	// 		if (4 - pass->getNumTextureUnitStates() >= 2) {
	// 			//there's more than two texture units available, use those instead of creating a new pass
	// 			S_LOG_VERBOSE("Reusing existing pass. ("<< pass->getNumTextureUnitStates() << " of "<< mNumberOfTextureUnitsOnCard << " texture unit used)");
	// 			addTextureUnitsToPass(pass, splatTextureName);
	// 			return pass;
	// 		}
	//
	// 	}

	const OgreImage& ogreImage = *layer.blendMap;
	Ogre::Image image;

	image.loadDynamicImage(const_cast<unsigned char*>(ogreImage.getData()), ogreImage.getResolution(), ogreImage.getResolution(), 1, Ogre::PF_A8);

	std::stringstream splatTextureNameSS;
	splatTextureNameSS << "terrain_" << mPage.getWFPosition().x() << "_" << mPage.getWFPosition().y() << "_" << technique->getNumPasses();
	const Ogre::String splatTextureName(splatTextureNameSS.str());
	Ogre::TexturePtr blendMapTexture;
	if (Ogre::Root::getSingletonPtr()->getTextureManager()->resourceExists(splatTextureName)) {
		blendMapTexture = static_cast<Ogre::TexturePtr>(Ogre::Root::getSingletonPtr()->getTextureManager()->getByName(splatTextureName));
		blendMapTexture->loadImage(image);

		Ogre::HardwarePixelBufferSharedPtr hardwareBuffer(blendMapTexture->getBuffer());
		//blit the whole image to the hardware buffer
		Ogre::PixelBox sourceBox(image.getPixelBox());
		hardwareBuffer->blitFromMemory(sourceBox);
	} else {
		blendMapTexture = Ogre::Root::getSingletonPtr()->getTextureManager()->loadImage(splatTextureName, "General", image, Ogre::TEX_TYPE_2D, 0);
		managedTextures.insert(blendMapTexture->getName());
	}

	//we need to create the image, update it and then destroy it again (to keep the memory usage down)
	//	if (layer->getBlendMapTextureName() == "") {
	//		//no texture yet; let's create one
	//		layer->createBlendMapImage();
	//		layer->updateBlendMapImage(geometry);
	//		layer->createTexture();
	//	} else {
	//		//a texture exists, so we just need to update the image
	//		layer->updateBlendMapImage(geometry); //calling this will also update the texture since the method will blit the image onto it
//.........这里部分代码省略.........

void 
MaterialPreviewDialog::buildPreviewBitmap( const Ogre::String &texName )
{
	const Ogre::uchar BytePerPixel = 8;

	// 读取原始image
	Ogre::Image *oriImage = getPreviewImage(texName);
	// 源大纹理的大小
	size_t oriImageHeight = oriImage->getHeight();
	size_t oriImageWidth = oriImage->getWidth();

	Ogre::uchar *oriImageData = oriImage->getData();

	// 分配一个足够大的空间来保存新建的image的数据
	size_t newImagegetRowSpan = oriImageWidth*oriImage->getBPP()/BytePerPixel;  // 新建的image的行宽（单位为字节）
	Ogre::uchar *newImageData = OGRE_ALLOC_T(Ogre::uchar, oriImageHeight*newImagegetRowSpan, Ogre::MEMCATEGORY_GENERAL);//new Ogre::uchar[oriImageHeight*newImagegetRowSpan];

	Ogre::uchar *newImageDataPointer = newImageData;

	Ogre::uchar *oriImagedataPointer = oriImageData;

	// 把所选的纹理的数据提取出来，并创建一个新的image
	for ( Ogre::uint i=0; i<oriImageHeight; ++i )
	{
		memcpy(newImageDataPointer, oriImagedataPointer, newImagegetRowSpan);
		newImageDataPointer += newImagegetRowSpan;
		oriImagedataPointer += oriImage->getRowSpan();
	}

	Ogre::Image newImage;
	newImage.loadDynamicImage(newImageData,oriImageWidth,oriImageHeight,1,oriImage->getFormat(),true);

	// 如果所选纹理大于64*64，就先resize
	if ( oriImageWidth > mPreviewImageWidth || oriImageHeight > mPreviewImageHeight )
		newImage.resize(mPreviewImageWidth, mPreviewImageHeight);

	// 如果有alpha，要与黑白图进行混合
	if ( newImage.getHasAlpha() )
	{
		Ogre::ColourValue col;

		for ( int i=0; i<mPreviewImageWidth; ++i )
		{
			for ( int j=0; j<mPreviewImageWidth; ++j )
			{
				col = newImage.getColourAt(j,i,0);

				float alphaValue = col.a;

				unsigned char r = col.r*255 * alphaValue; 
				unsigned char g = col.g*255 * alphaValue; 
				unsigned char b = col.b*255 * alphaValue;

				// 设置到image中
				mCurrentPreviewImage.SetRGB(j,i,r,g,b);
			}
		}
	}
	// 没有alpha，就直接拷贝数据
	else
	{
		Ogre::ColourValue col;

		for ( int i=0; i<mPreviewImageWidth; ++i )
		{
			for ( int j=0; j<mPreviewImageWidth; ++j )
			{
				col = newImage.getColourAt(j,i,0);

				unsigned char r = col.r*255;
				unsigned char g = col.g*255;
				unsigned char b = col.b*255;

				// 设置到image中
				mCurrentPreviewImage.SetRGB(j,i,r,g,b);
			}
		}
	}
}

Surface*
FontFile::GetSurface(void)
{
    int width    = 512;
    int height   = 4096;
    int chars    = 0;
    int char_num = 6165;
    Surface* ret = CreateSurface(width, height);

    int x_16 = 0;
    int y_16 = 0;

    struct ClutColor
    {
        u8 r;                 /**< @brief red color in CLUT */
        u8 g;                 /**< @brief green color in CLUT */
        u8 b;                 /**< @brief blue color in CLUT */
        u8 a;                 /**< @brief alpha in CLUT */
    };

    ClutColor color;
    color.r = 0;
    color.g = 0;
    color.b = 0;
    color.a = 255;

    u8 data = 0;


    for (int chars = 0; chars < char_num; ++chars)
    {
        Surface* glyth = CreateSurface(16, 16);

        for (int y = 0; y < 16; ++y)
        {
            data = (y < 11) ? GetU8(0xE + chars * 22 + y * 2 + 0) : 0;
            //LOGGER->Log(LOGGER_INFO, "%x, %02x", y, data);
            int j = 0;
            for (int i = 7; i >= 0; --i)
            {
                color.r = ((data >> i) & 0x01 == 1) ? 0 : 255;
                color.g = ((data >> i) & 0x01 == 1) ? 0 : 255;
                color.b = ((data >> i) & 0x01 == 1) ? 0 : 255;
                color.a = ((data >> i) & 0x01 == 1) ? 255 : 255;
                memcpy(glyth->pixels + 64 * y + j, &color, sizeof(ClutColor));
                j += 4;
            }

            data = (y < 11) ? GetU8(0xE + chars * 22 + y * 2 + 1) : 0;
            //LOGGER->Log(LOGGER_INFO, "%02x", data);
            for (int i = 7; i >= 0; --i)
            {
                color.r = ((data >> i) & 0x01 == 1) ? 0 : 255;
                color.g = ((data >> i) & 0x01 == 1) ? 0 : 255;
                color.b = ((data >> i) & 0x01 == 1) ? 0 : 255;
                color.a = ((data >> i) & 0x01 == 1) ? 255 : 255;
                memcpy(glyth->pixels + 64 * y + j, &color, sizeof(ClutColor));
                j += 4;
            }
        }

        CopyToSurface(ret, x_16, y_16, glyth);
        delete glyth;
        x_16 += 16;
        if (x_16 == ret->width)
        {
            y_16 += 16;
            x_16 = 0;
        }
    }



    Ogre::TexturePtr ptex;
    Ogre::HardwarePixelBufferSharedPtr buffer;
    ptex = Ogre::TextureManager::getSingleton().createManual("DynaTex", "General", Ogre::TEX_TYPE_2D, ret->width, ret->height, 0, Ogre::PF_R8G8B8A8, Ogre::TU_STATIC);
    buffer = ptex->getBuffer(0, 0);
    buffer->lock(Ogre::HardwareBuffer::HBL_DISCARD);
    const Ogre::PixelBox& pb = buffer->getCurrentLock();

    for (Uint32 y = 0; y < ret->height; ++y)
    {
        Uint32* data = static_cast<Uint32*>(pb.data) + y * pb.rowPitch;

        for (Uint32 x = 0; x < ret->width; ++x)
        {
            Uint32 clut = ret->pixels[y * ret->width * 4 + x * 4 + 3] | (ret->pixels[y * ret->width * 4 + x * 4 + 2] << 8) | (ret->pixels[y * ret->width * 4 + x * 4 + 1] << 16) | (ret->pixels[y * ret->width * 4 + x * 4 + 0] << 24);
            data[x] = clut;
        }
    }

    Ogre::Image image;
    image.loadDynamicImage((Ogre::uchar*)pb.data, ret->width, ret->height, Ogre::PF_R8G8B8A8);
    image.save("font.png");
    buffer->unlock();
    Ogre::TextureManager::getSingleton().remove("DynaTex");



    return ret;
//.........这里部分代码省略.........

void OgreCPP::createNewCrowdMember( float animationTime )
{
    char buffer[ 512 ];
    uint32_t numCrowdMembers = mCrowdMembers.size();

    // Create a new crowd member
    Ogre::TextureManager* pTextureMgr = Ogre::TextureManager::getSingletonPtr();
    Ogre::String frameTexNames[ 2*NUM_FRAMES_TO_RECORD ];
    Ogre::String lowResFrameTexNames[ 2*NUM_FRAMES_TO_RECORD ];
    for ( uint32_t frameIdx = 0; frameIdx < NUM_FRAMES_TO_RECORD; frameIdx++ )
    {
        Ogre::Image image;
        image.loadDynamicImage( mpImageData + frameIdx*SMALL_FRAME_WIDTH*SMALL_FRAME_HEIGHT,
            SMALL_FRAME_WIDTH, SMALL_FRAME_HEIGHT, 1, Ogre::PF_A4L4 );

        sprintf( buffer, "RecordedSequenceTex_%i_%i", numCrowdMembers, frameIdx );
        frameTexNames[ frameIdx ] = buffer;

        Ogre::TexturePtr pTexture = pTextureMgr->loadImage( frameTexNames[ frameIdx ],
            Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, image );

        sprintf( buffer, "LowResRecordedSequenceTex_%i_%i", numCrowdMembers, frameIdx );
        lowResFrameTexNames[ frameIdx ] = buffer;

        Ogre::Image lowResImage;
        lowResImage.loadDynamicImage( mpLowResImageData + frameIdx*LOW_RES_SMALL_FRAME_WIDTH*LOW_RES_SMALL_FRAME_HEIGHT,
            LOW_RES_SMALL_FRAME_WIDTH, LOW_RES_SMALL_FRAME_HEIGHT, 1, Ogre::PF_A4L4 );

        pTextureMgr->loadImage( lowResFrameTexNames[ frameIdx ],
            Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, lowResImage );
    }

    for ( uint32_t frameIdx = 0; frameIdx < NUM_FRAMES_TO_RECORD; frameIdx++ )
    {
        frameTexNames[ (2*NUM_FRAMES_TO_RECORD - 1) - frameIdx ] = frameTexNames[ frameIdx ];
        lowResFrameTexNames[ (2*NUM_FRAMES_TO_RECORD - 1) - frameIdx ] = lowResFrameTexNames[ frameIdx ];
    }

    // Create materials for the crowd member
    sprintf( buffer, "RecordedSequenceMat_%i", numCrowdMembers );
    Ogre::String matName = buffer;

    Ogre::MaterialManager* pMatMgr = Ogre::MaterialManager::getSingletonPtr();
    Ogre::MaterialPtr pSrcMat = (Ogre::MaterialPtr)pMatMgr->getByName( "Template/CutOut",
        Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME );
    Ogre::MaterialPtr pMat = pSrcMat->clone( matName );

    pMat->getTechnique( 0 )->getPass( 0 )->removeAllTextureUnitStates();
    Ogre::TextureUnitState* pTex = pMat->getTechnique( 0 )->getPass( 0 )->createTextureUnitState();
    pMat->getTechnique( 0 )->getPass( 0 )->addTextureUnitState( pTex );

    pTex->setAnimatedTextureName( frameTexNames, 2*NUM_FRAMES_TO_RECORD, 2.0*animationTime );

    pMat->setCullingMode( Ogre::CULL_NONE );
    pMat->compile();

    sprintf( buffer, "LowResRecordedSequenceMat_%i", numCrowdMembers );
    Ogre::String lowResMatName = buffer;

    pMat = pSrcMat->clone( lowResMatName );

    pMat->getTechnique( 0 )->getPass( 0 )->removeAllTextureUnitStates();
    pTex = pMat->getTechnique( 0 )->getPass( 0 )->createTextureUnitState();
    pMat->getTechnique( 0 )->getPass( 0 )->addTextureUnitState( pTex );

    pTex->setAnimatedTextureName( lowResFrameTexNames, 2*NUM_FRAMES_TO_RECORD, 2.0*animationTime );

    pMat->setCullingMode( Ogre::CULL_NONE );
    pMat->compile();

    CrowdMember newCrowdMember;
    newCrowdMember.mMaterialName = matName;
    newCrowdMember.mLowResMaterialName = lowResMatName;
    newCrowdMember.mFrameIdx = 0;
    newCrowdMember.mColourIdx = rand()%NUM_COLOURS;
    newCrowdMember.mbReversing = false;

    num = mCrowdMembers.size()%11;

	
	/** POSITION CROWD MEMBER HERE **/
    float x = (num*(5.0/11.0))-2.25;
    float y = 1.5;


    /* centre is 0,0, extremes are -3,+3 */
    newCrowdMember.mPos = Ogre::Vector3( x, y, 5.0 );
    newCrowdMember.mRow = 0;

    newCrowdMember.mpBillboard = OGRE_NEW PersonBillboard();
    newCrowdMember.mpBillboard->setMaterial( newCrowdMember.mMaterialName );
    newCrowdMember.mpBillboard->setCorners(
        Ogre::Vector3( -0.5f, -0.375f, 0.0f ),
        Ogre::Vector3( 0.5f, -0.375f, 0.0f ),
        Ogre::Vector3( -0.5f, 0.375f, 0.0f ),
        Ogre::Vector3( 0.5f, 0.375f, 0.0f )
    );

    // Make sure that the front row is drawn in front of everything else
    newCrowdMember.mpBillboard->setRenderQueueGroup( CROWD_FRONT_RENDER_QUEUE );
//.........这里部分代码省略.........

//-----------------------------------------------------------------------
void AtlasImageTool::process (void)
{
	Ogre::Root root("", "", "atlas.log");
	Ogre::ResourceGroupManager::getSingleton().addResourceLocation(mImagePath, "FileSystem");
	Ogre::StringVector::iterator itInputFileName;
	Ogre::StringVector::iterator itFrame;
	Ogre::StringVector::iterator itAlpha;

	itAlpha = mAlpha.begin();
	if (mInputFrames.empty() || mInputFrames[0] == Ogre::StringUtil::BLANK)
	{
		// No Frames are assigned so just add them
		for (itInputFileName = mInputFileNames.begin(); itInputFileName != mInputFileNames.end(); ++itInputFileName)
		{
			Ogre::String imageFileName = *itInputFileName;
			Ogre::Image image;
			image.load(imageFileName, "General");

			if (itAlpha != mAlpha.end() && *itAlpha != Ogre::StringUtil::BLANK)
			{
				Ogre::Real alpha = Ogre::StringConverter::parseReal(*itAlpha);
				correctAlpha(image, alpha);
				itAlpha++;
			}

			mAtlasImage.addImage(&image);
		}
	}
	else
	{
		// Frames are assigned, so generate intermediate images
		itInputFileName = mInputFileNames.begin();
		Ogre::Real alpha = 1.0f;
		Ogre::String nextImageFileName = *itInputFileName;
		Ogre::Image nextImage;
		itFrame = mInputFrames.begin();
		size_t nextFrame = Ogre::StringConverter::parseUnsignedInt(*itFrame);
		nextImage.load(nextImageFileName, "General");
		size_t frameCounter = 0;

		if (!mAlpha.empty() && mAlpha[0] != Ogre::StringUtil::BLANK)
		{
			itAlpha = mAlpha.begin();
			Ogre::Real alpha = Ogre::StringConverter::parseReal(*itAlpha);
			correctAlpha(nextImage, alpha);
			itAlpha++;
		}

		mAtlasImage.addImage(&nextImage);
		frameCounter++;
		itInputFileName++;
		itFrame++;

		while (itInputFileName != mInputFileNames.end())
		{
			// Get the next filename
			Ogre::Image firstImage(nextImage);
			nextImageFileName = *itInputFileName;
			nextImage.load(nextImageFileName, "General");

			if (itAlpha != mAlpha.end() && *itAlpha != Ogre::StringUtil::BLANK)
			{
				Ogre::Real alpha = Ogre::StringConverter::parseReal(*itAlpha);
				correctAlpha(nextImage, alpha);
				itAlpha++;
			}

			if (itFrame != mInputFrames.end())
			{
				size_t firstFrame = nextFrame;
				nextFrame = Ogre::StringConverter::parseUnsignedInt(*itFrame);
				itFrame++;
				frameCounter++;

				// Generate and add interpolated images to the atlas image
				size_t numberOfFrames = nextFrame - firstFrame;
				for (size_t i = 1; i < numberOfFrames; ++i)
				{
					Ogre::Real fraction = (Ogre::Real)i / (Ogre::Real)numberOfFrames;
					Ogre::Image interpolatedImage;
					size_t pixelSize = Ogre::PixelUtil::getNumElemBytes(firstImage.getFormat());
					size_t bufferSize = firstImage.getWidth() * firstImage.getHeight() * pixelSize;
					Ogre::uchar* data = OGRE_ALLOC_T(Ogre::uchar, bufferSize, Ogre::MEMCATEGORY_GENERAL);
					interpolatedImage.loadDynamicImage(data, firstImage.getWidth(), firstImage.getHeight(), 1, firstImage.getFormat(), true);
					interpolate (interpolatedImage, firstImage, nextImage, fraction);
					mAtlasImage.addImage(&interpolatedImage);
					frameCounter++;
				}
			}
			mAtlasImage.addImage(&nextImage);
			frameCounter++;
			itInputFileName++;
		}
	}

	mAtlasImage._compile();
	mAtlasImage.save(mImagePath + "//" + mOutputImage);
}