C++ HardwareVertexBufferSharedPtr::getSizeInBytes方法代码示例

void MovableText::_updateColors(void)
{
	assert(mpFont);
	assert(!mpMaterial.isNull());

	// Convert to system-specific
	RGBA color;
	Root::getSingleton().convertColourValue(mColor, &color);
	HardwareVertexBufferSharedPtr vbuf = mRenderOp.vertexData->vertexBufferBinding->getBuffer(COLOUR_BINDING);
	//RGBA *pDest = static_cast<RGBA*>(vbuf->lock(HardwareBuffer::HBL_NORMAL));
	RGBA* pDest=(RGBA*)malloc(vbuf->getSizeInBytes());
	RGBA* oDest=pDest;
	for (uint i = 0; i < mRenderOp.vertexData->vertexCount; ++i)
		*pDest++ = color;
	//vbuf->unlock();
	vbuf->writeData(0, vbuf->getSizeInBytes(), oDest, true);
	free(oDest);
	mUpdateColors = false;
}

	//---------------------------------------------------------------------
	void PrefabFactory::createPlane(Mesh* mesh)
	{
		SubMesh* sub = mesh->createSubMesh();
		float vertices[32] = {
			-100, -100, 0,	// pos
			0,0,1,			// normal
			0,1,			// texcoord
			100, -100, 0,
			0,0,1,
			1,1,
			100,  100, 0,
			0,0,1,
			1,0,
			-100,  100, 0 ,
			0,0,1,
			0,0 
		};
		mesh->sharedVertexData = OGRE_NEW VertexData();
		mesh->sharedVertexData->vertexCount = 4;
		VertexDeclaration* decl = mesh->sharedVertexData->vertexDeclaration;
		VertexBufferBinding* bind = mesh->sharedVertexData->vertexBufferBinding;

		size_t offset = 0;
		decl->addElement(0, offset, VET_FLOAT3, VES_POSITION);
		offset += VertexElement::getTypeSize(VET_FLOAT3);
		decl->addElement(0, offset, VET_FLOAT3, VES_NORMAL);
		offset += VertexElement::getTypeSize(VET_FLOAT3);
		decl->addElement(0, offset, VET_FLOAT2, VES_TEXTURE_COORDINATES, 0);
		offset += VertexElement::getTypeSize(VET_FLOAT2);

		HardwareVertexBufferSharedPtr vbuf = 
			HardwareBufferManager::getSingleton().createVertexBuffer(
			offset, 4, HardwareBuffer::HBU_STATIC_WRITE_ONLY);
		bind->setBinding(0, vbuf);

		vbuf->writeData(0, vbuf->getSizeInBytes(), vertices, true);

		sub->useSharedVertices = true;
		HardwareIndexBufferSharedPtr ibuf = HardwareBufferManager::getSingleton().
			createIndexBuffer(
			HardwareIndexBuffer::IT_16BIT, 
			6, 
			HardwareBuffer::HBU_STATIC_WRITE_ONLY);

		unsigned short faces[6] = {0,1,2,
			0,2,3 };
		sub->indexData->indexBuffer = ibuf;
		sub->indexData->indexCount = 6;
		sub->indexData->indexStart =0;
		ibuf->writeData(0, ibuf->getSizeInBytes(), faces, true);

		mesh->_setBounds(AxisAlignedBox(-100,-100,0,100,100,0), true);
		mesh->_setBoundingSphereRadius(Math::Sqrt(100*100+100*100));
	}

void ColoredTextAreaOverlayElement::updateColours(void)
{
	if(!mRenderOp.vertexData) return;
	// Convert to system-specific
	RGBA topColour, bottomColour;
	// Set default to white
	Root::getSingleton().convertColourValue(ColourValue::White, &topColour);
	Root::getSingleton().convertColourValue(ColourValue::White, &bottomColour);

	HardwareVertexBufferSharedPtr vbuf = 
		mRenderOp.vertexData->vertexBufferBinding->getBuffer(COLOUR_BINDING);

	//RGBA* pDest = static_cast<RGBA*>(
	//	vbuf->lock(HardwareBuffer::HBL_NORMAL) );
	RGBA* pDest=(RGBA*)malloc(vbuf->getSizeInBytes());
	RGBA* oDest=pDest;

	for (size_t i = 0; i < mAllocSize; ++i)
	{
		if (i < m_Colors.size())
		{
			Root::getSingleton().convertColourValue(GetColor(m_Colors[i], m_ValueTop), &topColour);
			Root::getSingleton().convertColourValue(GetColor(m_Colors[i], m_ValueBottom), &bottomColour);
		}

		// First tri (top, bottom, top)
		*pDest++ = topColour;
		*pDest++ = bottomColour;
		*pDest++ = topColour;
		// Second tri (top, bottom, bottom)
		*pDest++ = topColour;
		*pDest++ = bottomColour;
		*pDest++ = bottomColour;
	}
	vbuf->writeData(0, vbuf->getSizeInBytes(), oDest, true);
	free(oDest);
	//vbuf->unlock();
}

	//-----------------------------------------------------------------------
    HardwareVertexBufferSharedPtr 
    HardwareBufferManagerBase::allocateVertexBufferCopy(
        const HardwareVertexBufferSharedPtr& sourceBuffer, 
        BufferLicenseType licenseType, HardwareBufferLicensee* licensee,
        bool copyData)
    {
		// pre-lock the mVertexBuffers mutex, which would usually get locked in
		//  makeBufferCopy / createVertexBuffer
		// this prevents a deadlock in _notifyVertexBufferDestroyed
		// which locks the same mutexes (via other methods) but in reverse order
        OGRE_LOCK_MUTEX(mVertexBuffersMutex);
		{
                    OGRE_LOCK_MUTEX(mTempBuffersMutex);
			HardwareVertexBufferSharedPtr vbuf;

			// Locate existing buffer copy in temporary vertex buffers
			FreeTemporaryVertexBufferMap::iterator i = 
				mFreeTempVertexBufferMap.find(sourceBuffer.get());
			if (i == mFreeTempVertexBufferMap.end())
			{
				// copy buffer, use shadow buffer and make dynamic
				vbuf = makeBufferCopy(
					sourceBuffer, 
					HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY_DISCARDABLE, 
					true);
			}
			else
			{
				// Allocate existing copy
				vbuf = i->second;
				mFreeTempVertexBufferMap.erase(i);
			}

			// Copy data?
			if (copyData)
			{
				vbuf->copyData(*(sourceBuffer.get()), 0, 0, sourceBuffer->getSizeInBytes(), true);
			}

			// Insert copy into licensee list
			mTempVertexBufferLicenses.insert(
				TemporaryVertexBufferLicenseMap::value_type(
					vbuf.get(),
					VertexBufferLicense(sourceBuffer.get(), licenseType, EXPIRED_DELAY_FRAME_THRESHOLD, vbuf, licensee)));
			return vbuf;
		}

    }

	HardwareVertexBufferSharedPtr HardwareBufferManagerBase::allocateVertexBufferCopy(const HardwareVertexBufferSharedPtr& sourceBuffer, BufferLicenseType licenseType, HardwareBufferLicensee* licensee, BOOL copyData /* = FALSE */)
	{
		HardwareVertexBufferSharedPtr vbuf;
		FreeTemporaryVertexBufferMap::iterator i = mFreeTempVertexBufferMap.find(sourceBuffer.get());
		if (i == mFreeTempVertexBufferMap.end())
		{
			vbuf = makeBufferCopy(sourceBuffer, HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY_DISCARDABLE,
				TRUE);
		}
		else
		{
			vbuf = i->second;
			mFreeTempVertexBufferMap.erase(i);
		}
		if (copyData)
		{
			vbuf->copyData(*(sourceBuffer.get()), 0, 0, sourceBuffer->getSizeInBytes(), TRUE);
		}
		mTempVertexBufferLicenses.insert(
			TemporayVertexBufferLicenseMap::value_type(
			vbuf.get(),
			VertexBufferLicense(sourceBuffer.get(), licenseType, EXPIRED_DELAY_FRAME_THRESHOLD, vbuf, licensee)));
		return vbuf;
	}

	//---------------------------------------------------------------------
	void Animation::apply(Entity* entity, Real timePos, Real weight, 
		bool software, bool hardware)
	{
        // Calculate time index for fast keyframe search
        TimeIndex timeIndex = _getTimeIndex(timePos);

		VertexTrackList::iterator i;
		for (i = mVertexTrackList.begin(); i != mVertexTrackList.end(); ++i)
		{
			unsigned short handle = i->first;
			VertexAnimationTrack* track = i->second;

			VertexData* swVertexData;
			VertexData* hwVertexData;
			VertexData* origVertexData;
			bool firstAnim = false;
			if (handle == 0)
			{
				// shared vertex data
				firstAnim = !entity->_getBuffersMarkedForAnimation();
				swVertexData = entity->_getSoftwareVertexAnimVertexData();
				hwVertexData = entity->_getHardwareVertexAnimVertexData();
				origVertexData = entity->getMesh()->sharedVertexData;
				entity->_markBuffersUsedForAnimation();
			}
			else
			{
				// sub entity vertex data (-1)
				SubEntity* s = entity->getSubEntity(handle - 1);
				// Skip this track if subentity is not visible
				if (!s->isVisible())
					continue;
				firstAnim = !s->_getBuffersMarkedForAnimation();
				swVertexData = s->_getSoftwareVertexAnimVertexData();
				hwVertexData = s->_getHardwareVertexAnimVertexData();
				origVertexData = s->getSubMesh()->vertexData;
				s->_markBuffersUsedForAnimation();
			}
			// Apply to both hardware and software, if requested
			if (software)
			{
				if (firstAnim && track->getAnimationType() == VAT_POSE)
				{
					// First time through for a piece of pose animated vertex data
					// We need to copy the original position values to the temp accumulator
					const VertexElement* origelem = 
						origVertexData->vertexDeclaration->findElementBySemantic(VES_POSITION);
					const VertexElement* destelem = 
						swVertexData->vertexDeclaration->findElementBySemantic(VES_POSITION);
					HardwareVertexBufferSharedPtr origBuffer = 
						origVertexData->vertexBufferBinding->getBuffer(origelem->getSource());
					HardwareVertexBufferSharedPtr destBuffer = 
						swVertexData->vertexBufferBinding->getBuffer(destelem->getSource());
					destBuffer->copyData(*origBuffer.get(), 0, 0, destBuffer->getSizeInBytes(), true);
				}
				track->setTargetMode(VertexAnimationTrack::TM_SOFTWARE);
				track->applyToVertexData(swVertexData, timeIndex, weight, 
					&(entity->getMesh()->getPoseList()));
			}
			if (hardware)
			{
				track->setTargetMode(VertexAnimationTrack::TM_HARDWARE);
				track->applyToVertexData(hwVertexData, timeIndex, weight, 
					&(entity->getMesh()->getPoseList()));
			}
		}

	}

void VolumeRenderable::initialise()
{
	// Create geometry
	size_t nvertices = mSlices*4; // n+1 planes
	size_t elemsize = 3*3;
	size_t dsize = elemsize*nvertices;
	size_t x;
	
	Ogre::IndexData *idata = new Ogre::IndexData();
	Ogre::VertexData *vdata = new Ogre::VertexData();
	
	// Create  structures
	float *vertices = new float[dsize];
	
	float coords[4][2] = {
		{0.0f, 0.0f},
		{0.0f, 1.0f},
		{1.0f, 0.0f},
		{1.0f, 1.0f}
	};
	for(x=0; x<mSlices; x++) 
	{
		for(size_t y=0; y<4; y++)
		{
			float xcoord = coords[y][0]-0.5;
			float ycoord = coords[y][1]-0.5;
			float zcoord = -((float)x/(float)(mSlices-1)  - 0.5f);
			// 1.0f .. a/(a+1)
			// coordinate
			vertices[x*4*elemsize+y*elemsize+0] = xcoord*(mSize/2.0f);
			vertices[x*4*elemsize+y*elemsize+1] = ycoord*(mSize/2.0f);
			vertices[x*4*elemsize+y*elemsize+2] = zcoord*(mSize/2.0f);
			// normal
			vertices[x*4*elemsize+y*elemsize+3] = 0.0f;
			vertices[x*4*elemsize+y*elemsize+4] = 0.0f;
			vertices[x*4*elemsize+y*elemsize+5] = 1.0f;
			// tex
			vertices[x*4*elemsize+y*elemsize+6] = xcoord*sqrtf(3.0f);
			vertices[x*4*elemsize+y*elemsize+7] = ycoord*sqrtf(3.0f);
			vertices[x*4*elemsize+y*elemsize+8] = zcoord*sqrtf(3.0f);
		} 
	}
	unsigned short *faces = new unsigned short[mSlices*6];
	for(x=0; x<mSlices; x++) 
	{
		faces[x*6+0] = x*4+0;
		faces[x*6+1] = x*4+1;
		faces[x*6+2] = x*4+2;
		faces[x*6+3] = x*4+1;
		faces[x*6+4] = x*4+2;
		faces[x*6+5] = x*4+3;
	}
	// Setup buffers
	vdata->vertexStart = 0;
	vdata->vertexCount = nvertices;
	
	VertexDeclaration* decl = vdata->vertexDeclaration;
	VertexBufferBinding* bind = vdata->vertexBufferBinding;

	size_t offset = 0;
	decl->addElement(0, offset, VET_FLOAT3, VES_POSITION);
	offset += VertexElement::getTypeSize(VET_FLOAT3);
	decl->addElement(0, offset, VET_FLOAT3, VES_NORMAL);
	offset += VertexElement::getTypeSize(VET_FLOAT3);
	decl->addElement(0, offset, VET_FLOAT3, VES_TEXTURE_COORDINATES);
	offset += VertexElement::getTypeSize(VET_FLOAT3);

	HardwareVertexBufferSharedPtr vbuf = 
	HardwareBufferManager::getSingleton().createVertexBuffer(
		offset, nvertices, HardwareBuffer::HBU_STATIC_WRITE_ONLY);

	bind->setBinding(0, vbuf);

	vbuf->writeData(0, vbuf->getSizeInBytes(), vertices, true);
	
	HardwareIndexBufferSharedPtr ibuf = HardwareBufferManager::getSingleton().
		createIndexBuffer(
			HardwareIndexBuffer::IT_16BIT, 
			mSlices*6, 
			HardwareBuffer::HBU_STATIC_WRITE_ONLY);

	idata->indexBuffer = ibuf;
	idata->indexCount = mSlices*6;
	idata->indexStart = 0;
	ibuf->writeData(0, ibuf->getSizeInBytes(), faces, true);

	// Delete temporary buffers
	delete [] vertices;
	delete [] faces;
	
	// Now make the render operation
	mRenderOp.operationType = Ogre::RenderOperation::OT_TRIANGLE_LIST;
	mRenderOp.indexData = idata;
	mRenderOp.vertexData = vdata;
	mRenderOp.useIndexes = true;
	
	 // Create a brand new private material
	MaterialPtr material = 
		MaterialManager::getSingleton().create(mTexture, "VolumeRenderable",
			false, 0); // Manual, loader
//.........这里部分代码省略.........

Airbrake::Airbrake(char* basename, int num, node_t *ndref, node_t *ndx, node_t *ndy, node_t *nda, Vector3 pos, float width, float length, float maxang, char* texname, float tx1, float ty1, float tx2, float ty2, float lift_coef)
{
	snode=0;
	noderef=ndref;
	nodex=ndx;
	nodey=ndy;
	nodea=nda;
	offset=pos;
	maxangle=maxang;
	area=width*length*lift_coef;
	char meshname[256];
	sprintf(meshname, "airbrakemesh-%s-%i", basename, num);
	/// Create the mesh via the MeshManager
    msh = MeshManager::getSingleton().createManual(meshname, ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);

	union
	{
		float *vertices;
		CoVertice_t *covertices;
	};

    /// Create submesh
    SubMesh* sub = msh->createSubMesh();

	//materials
	sub->setMaterialName(texname);

    /// Define the vertices
    size_t nVertices = 4;
    size_t vbufCount = (2*3+2)*nVertices;
	vertices=(float*)malloc(vbufCount*sizeof(float));

	//textures coordinates
	covertices[0].texcoord=Vector2(tx1, ty1);
	covertices[1].texcoord=Vector2(tx2, ty1);
	covertices[2].texcoord=Vector2(tx2, ty2);
	covertices[3].texcoord=Vector2(tx1, ty2);

    /// Define triangles
    /// The values in this table refer to vertices in the above table
    size_t ibufCount = 3*4;
    unsigned short *faces=(unsigned short*)malloc(ibufCount*sizeof(unsigned short));
	faces[0]=0; faces[1]=1; faces[2]=2;
	faces[3]=0; faces[4]=2; faces[5]=3;
	faces[6]=0; faces[7]=2; faces[8]=1;
	faces[9]=0; faces[10]=3; faces[11]=2;

	//set coords
	covertices[0].vertex=Vector3(0,0,0);
	covertices[1].vertex=Vector3(width,0,0);
	covertices[2].vertex=Vector3(width,0,length);
	covertices[3].vertex=Vector3(0,0,length);

	covertices[0].normal=Vector3(0,1,0);
	covertices[1].normal=Vector3(0,1,0);
	covertices[2].normal=Vector3(0,1,0);
	covertices[3].normal=Vector3(0,1,0);

    /// Create vertex data structure for vertices shared between submeshes
    msh->sharedVertexData = new VertexData();
    msh->sharedVertexData->vertexCount = nVertices;

    /// Create declaration (memory format) of vertex data
    VertexDeclaration* decl = msh->sharedVertexData->vertexDeclaration;
    size_t offset = 0;
    decl->addElement(0, offset, VET_FLOAT3, VES_POSITION);
    offset += VertexElement::getTypeSize(VET_FLOAT3);
    decl->addElement(0, offset, VET_FLOAT3, VES_NORMAL);
    offset += VertexElement::getTypeSize(VET_FLOAT3);
//        decl->addElement(0, offset, VET_FLOAT3, VES_DIFFUSE);
//        offset += VertexElement::getTypeSize(VET_FLOAT3);
    decl->addElement(0, offset, VET_FLOAT2, VES_TEXTURE_COORDINATES, 0);
    offset += VertexElement::getTypeSize(VET_FLOAT2);

    /// Allocate vertex buffer of the requested number of vertices (vertexCount)
    /// and bytes per vertex (offset)
    HardwareVertexBufferSharedPtr vbuf =
        HardwareBufferManager::getSingleton().createVertexBuffer(
            offset, msh->sharedVertexData->vertexCount, HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY_DISCARDABLE);

    /// Upload the vertex data to the card
    vbuf->writeData(0, vbuf->getSizeInBytes(), vertices, true);

    /// Set vertex buffer binding so buffer 0 is bound to our vertex buffer
    VertexBufferBinding* bind = msh->sharedVertexData->vertexBufferBinding;
    bind->setBinding(0, vbuf);

	/// Allocate index buffer of the requested number of vertices (ibufCount)
    HardwareIndexBufferSharedPtr faceibuf = HardwareBufferManager::getSingleton().
        createIndexBuffer(
            HardwareIndexBuffer::IT_16BIT,
            ibufCount,
            HardwareBuffer::HBU_STATIC_WRITE_ONLY);

    /// Upload the index data to the card
    faceibuf->writeData(0, faceibuf->getSizeInBytes(), faces, true);

    /// Set parameters of the submesh
    sub->useSharedVertices = true;
    sub->indexData->indexBuffer = faceibuf;
//.........这里部分代码省略.........

void Road2::createMesh()
{
    AxisAlignedBox aab;
    union
    {
        float* vertices;
        CoVertice_t* covertices;
    };
    /// Create the mesh via the MeshManager
    Ogre::String mesh_name = Ogre::String("RoadSystem-").append(Ogre::StringConverter::toString(mid));
    msh = MeshManager::getSingleton().createManual(mesh_name, ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);

    mainsub = msh->createSubMesh();
    mainsub->setMaterialName("road2");

    /// Define the vertices
    size_t vbufCount = (2 * 3 + 2) * vertexcount;
    vertices = (float*)malloc(vbufCount * sizeof(float));
    int i;
    //fill values
    for (i = 0; i < vertexcount; i++)
    {
        covertices[i].texcoord = tex[i];
        covertices[i].vertex = vertex[i];
        //normals are computed later
        covertices[i].normal = Vector3::ZERO;
        aab.merge(vertex[i]);
    }

    /// Define triangles
    size_t ibufCount = 3 * tricount;

    //compute normals
    for (i = 0; i < tricount && i * 3 + 2 < MAX_TRIS * 3; i++)
    {
        Vector3 v1, v2;
        v1 = covertices[tris[i * 3 + 1]].vertex - covertices[tris[i * 3]].vertex;
        v2 = covertices[tris[i * 3 + 2]].vertex - covertices[tris[i * 3]].vertex;
        v1 = v1.crossProduct(v2);
        v1.normalise();
        covertices[tris[i * 3]].normal += v1;
        covertices[tris[i * 3 + 1]].normal += v1;
        covertices[tris[i * 3 + 2]].normal += v1;
    }
    //normalize
    for (i = 0; i < vertexcount; i++)
    {
        covertices[i].normal.normalise();
    }

    /// Create vertex data structure for vertices shared between sub meshes
    msh->sharedVertexData = new VertexData();
    msh->sharedVertexData->vertexCount = vertexcount;

    /// Create declaration (memory format) of vertex data
    VertexDeclaration* decl = msh->sharedVertexData->vertexDeclaration;
    size_t offset = 0;
    decl->addElement(0, offset, VET_FLOAT3, VES_POSITION);
    offset += VertexElement::getTypeSize(VET_FLOAT3);
    decl->addElement(0, offset, VET_FLOAT3, VES_NORMAL);
    offset += VertexElement::getTypeSize(VET_FLOAT3);
    decl->addElement(0, offset, VET_FLOAT2, VES_TEXTURE_COORDINATES, 0);
    offset += VertexElement::getTypeSize(VET_FLOAT2);

    /// Allocate vertex buffer of the requested number of vertices (vertexCount)
    /// and bytes per vertex (offset)
    HardwareVertexBufferSharedPtr vbuf =
        HardwareBufferManager::getSingleton().createVertexBuffer(
            offset, msh->sharedVertexData->vertexCount, HardwareBuffer::HBU_STATIC_WRITE_ONLY);

    /// Upload the vertex data to the card
    vbuf->writeData(0, vbuf->getSizeInBytes(), vertices, true);

    /// Set vertex buffer binding so buffer 0 is bound to our vertex buffer
    VertexBufferBinding* bind = msh->sharedVertexData->vertexBufferBinding;
    bind->setBinding(0, vbuf);

    //for the face
    /// Allocate index buffer of the requested number of vertices (ibufCount)
    HardwareIndexBufferSharedPtr ibuf = HardwareBufferManager::getSingleton().
        createIndexBuffer(
            HardwareIndexBuffer::IT_16BIT,
            ibufCount,
            HardwareBuffer::HBU_STATIC_WRITE_ONLY);

    /// Upload the index data to the card
    ibuf->writeData(0, ibuf->getSizeInBytes(), tris, true);

    /// Set parameters of the submesh
    mainsub->useSharedVertices = true;
    mainsub->indexData->indexBuffer = ibuf;
    mainsub->indexData->indexCount = ibufCount;
    mainsub->indexData->indexStart = 0;

    msh->_setBounds(aab, true);

    /// Notify Mesh object that it has been loaded
    msh->load();

    free(vertices);
//.........这里部分代码省略.........

	Mesh* OgreSubsystem::createMesh(const MeshData& data,String name)
	{
		 String nombre = name;
		if(name=="AUTO_NAME_ME")
		{
			nombre = "OryxSceneNodeAutoNamed"+StringUtils::toString(mAutoNameIndex);
			++mAutoNameIndex;
		}

		using namespace Ogre;

		bool hasVertexColor = data.getDiffuse();
		bool hasNormals = data.getNormals();

		int numFaces = data.indices.size()/3;
		int numVertices = data.vertices.size()/3;

		HardwareVertexBufferSharedPtr posVertexBuffer;
		HardwareVertexBufferSharedPtr normVertexBuffer;
		std::vector<HardwareVertexBufferSharedPtr> texcoordsVertexBuffer;
		HardwareVertexBufferSharedPtr diffuseVertexBuffer;
		HardwareIndexBufferSharedPtr indexBuffer;

		Ogre::Mesh* m = Ogre::MeshManager::getSingletonPtr()->createManual(
		nombre,ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME).get();

		Ogre::SubMesh* sm = m->createSubMesh();
		sm->useSharedVertices = false;
		sm->vertexData = new VertexData();
		sm->vertexData->vertexStart = 0;
		sm->vertexData->vertexCount = numVertices;

		Ogre::VertexDeclaration* vdecl = sm->vertexData->vertexDeclaration;
		Ogre::VertexBufferBinding* vbind = sm->vertexData->vertexBufferBinding;

		size_t bufferCount = 0;

		vdecl->addElement(bufferCount, 0, VET_FLOAT3, VES_POSITION);

		if(hasNormals)
			vdecl->addElement(++bufferCount, 0, VET_FLOAT3, VES_NORMAL);

		if(hasVertexColor)
			vdecl->addElement(++bufferCount, 0, VET_FLOAT4, VES_DIFFUSE);

		for(int i=0;i<data.texcoords.size();++i)
			vdecl->addElement(++bufferCount, 0, VET_FLOAT2, VES_TEXTURE_COORDINATES,i);

		bufferCount = 0;

		// Positions
		posVertexBuffer = HardwareBufferManager::getSingleton().createVertexBuffer(
			3*sizeof(float),numVertices,Ogre::HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY_DISCARDABLE);

		vbind->setBinding(bufferCount, posVertexBuffer);

		float* vertices = data.getVertices();
		float* normals = data.getNormals();
		float* diffuse = data.getDiffuse();
		unsigned short* indices = data.getIndices();

		posVertexBuffer->writeData(0,posVertexBuffer->getSizeInBytes(),vertices, true);

		// Normals
		if(hasNormals)
		{
			normVertexBuffer = HardwareBufferManager::getSingleton().createVertexBuffer(
			3*sizeof(float),numVertices,HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY_DISCARDABLE);

			vbind->setBinding(++bufferCount, normVertexBuffer);

			normVertexBuffer->writeData(0,normVertexBuffer->getSizeInBytes(),normals, true);
		}

		if(hasVertexColor)
		{
			diffuseVertexBuffer = HardwareBufferManager::getSingleton().createVertexBuffer(
			4*sizeof(float),numVertices,HardwareBuffer::HBU_STATIC_WRITE_ONLY);

			vbind->setBinding(++bufferCount, diffuseVertexBuffer);

			diffuseVertexBuffer->writeData(0,diffuseVertexBuffer->getSizeInBytes(), diffuse, true);
		}

		// Texcoords
		for(int i=0;i<data.texcoords.size();++i)
		{
			texcoordsVertexBuffer.push_back(HardwareBufferManager::getSingleton().createVertexBuffer(
			2*sizeof(float),numVertices,HardwareBuffer::HBU_STATIC_WRITE_ONLY));

			vbind->setBinding(++bufferCount, texcoordsVertexBuffer[i]);

			texcoordsVertexBuffer[i]->writeData(0,sizeof(float)*data.texcoords[i].size(),&data.texcoords[i][0], false);
		}

		if(!data.indices.empty())
		{
			// Prepare buffer for indices
			indexBuffer = HardwareBufferManager::getSingleton().createIndexBuffer(
			HardwareIndexBuffer::IT_16BIT,3*numFaces,HardwareBuffer::HBU_STATIC_WRITE_ONLY, true);
//.........这里部分代码省略.........

// Convert Nif::NiTriShape to Ogre::SubMesh, attached to the given
// mesh.
void NIFLoader::createOgreSubMesh(NiTriShape *shape, const String &material, std::list<VertexBoneAssignment> &vertexBoneAssignments)
{
    //  cout << "s:" << shape << "\n";
    NiTriShapeData *data = shape->data.getPtr();
    SubMesh *sub = mesh->createSubMesh(shape->name.toString());

    int nextBuf = 0;

    // This function is just one long stream of Ogre-barf, but it works
    // great.

    // Add vertices
    int numVerts = data->vertices.length / 3;
    sub->vertexData = new VertexData();
    sub->vertexData->vertexCount = numVerts;
    sub->useSharedVertices = false;

    VertexDeclaration *decl = sub->vertexData->vertexDeclaration;
    decl->addElement(nextBuf, 0, VET_FLOAT3, VES_POSITION);

    HardwareVertexBufferSharedPtr vbuf =
        HardwareBufferManager::getSingleton().createVertexBuffer(
            VertexElement::getTypeSize(VET_FLOAT3),
            numVerts, HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY, false);

    if(flip)
	{
		float *datamod = new float[data->vertices.length];
		//std::cout << "Shape" << shape->name.toString() << "\n";
		for(int i = 0; i < numVerts; i++)
		{
			int index = i * 3;
			const float *pos = data->vertices.ptr + index;
		    Ogre::Vector3 original = Ogre::Vector3(*pos  ,*(pos+1), *(pos+2));
			original = mTransform * original;
			mBoundingBox.merge(original);
			datamod[index] = original.x;
			datamod[index+1] = original.y;
			datamod[index+2] = original.z;
		}
        vbuf->writeData(0, vbuf->getSizeInBytes(), datamod, false);
        delete [] datamod;
	}
	else
	{
		vbuf->writeData(0, vbuf->getSizeInBytes(), data->vertices.ptr, false);
	}


    VertexBufferBinding* bind = sub->vertexData->vertexBufferBinding;
    bind->setBinding(nextBuf++, vbuf);

    if (data->normals.length)
    {
        decl->addElement(nextBuf, 0, VET_FLOAT3, VES_NORMAL);
        vbuf = HardwareBufferManager::getSingleton().createVertexBuffer(
                   VertexElement::getTypeSize(VET_FLOAT3),
                   numVerts, HardwareBuffer::HBU_STATIC_WRITE_ONLY, false);

		if(flip)
		{
			Quaternion rotation = mTransform.extractQuaternion();
			rotation.normalise();

			float *datamod = new float[data->normals.length];
			for(int i = 0; i < numVerts; i++)
		    {
			    int index = i * 3;
			    const float *pos = data->normals.ptr + index;
		        Ogre::Vector3 original = Ogre::Vector3(*pos  ,*(pos+1), *(pos+2));
				original = rotation * original;
				if (mNormaliseNormals)
			    {
                    original.normalise();
				}


			    datamod[index] = original.x;
			    datamod[index+1] = original.y;
			    datamod[index+2] = original.z;
		    }
			vbuf->writeData(0, vbuf->getSizeInBytes(), datamod, false);
            delete [] datamod;
		}
		else
		{
            vbuf->writeData(0, vbuf->getSizeInBytes(), data->normals.ptr, false);
		}
        bind->setBinding(nextBuf++, vbuf);
    }

    
    // Vertex colors
    if (data->colors.length)
    {
        const float *colors = data->colors.ptr;
        RenderSystem* rs = Root::getSingleton().getRenderSystem();
        std::vector<RGBA> colorsRGB(numVerts);
//.........这里部分代码省略.........

//.........这里部分代码省略.........
			1,1,
			CUBE_HALF_SIZE, CUBE_HALF_SIZE, -CUBE_HALF_SIZE,
			1,0,0,
			1,0,
			CUBE_HALF_SIZE, CUBE_HALF_SIZE, CUBE_HALF_SIZE,
			1,0,0,
			0,0,

			// up side
			-CUBE_HALF_SIZE, CUBE_HALF_SIZE, CUBE_HALF_SIZE,
			0,1,0,
			0,1,
			CUBE_HALF_SIZE, CUBE_HALF_SIZE, CUBE_HALF_SIZE,
			0,1,0,
			1,1,
			CUBE_HALF_SIZE, CUBE_HALF_SIZE, -CUBE_HALF_SIZE,
			0,1,0,
			1,0,
			-CUBE_HALF_SIZE, CUBE_HALF_SIZE, -CUBE_HALF_SIZE,
			0,1,0,
			0,0,

			// down side
			-CUBE_HALF_SIZE, -CUBE_HALF_SIZE, -CUBE_HALF_SIZE,
			0,-1,0,
			0,1,
			CUBE_HALF_SIZE, -CUBE_HALF_SIZE, -CUBE_HALF_SIZE,
			0,-1,0,
			1,1,
			CUBE_HALF_SIZE, -CUBE_HALF_SIZE, CUBE_HALF_SIZE,
			0,-1,0,
			1,0,
			-CUBE_HALF_SIZE, -CUBE_HALF_SIZE, CUBE_HALF_SIZE,
			0,-1,0,
			0,0 
		};

		mesh->sharedVertexData = OGRE_NEW VertexData();
		mesh->sharedVertexData->vertexCount = NUM_VERTICES;
		VertexDeclaration* decl = mesh->sharedVertexData->vertexDeclaration;
		VertexBufferBinding* bind = mesh->sharedVertexData->vertexBufferBinding;

		size_t offset = 0;
		decl->addElement(0, offset, VET_FLOAT3, VES_POSITION);
		offset += VertexElement::getTypeSize(VET_FLOAT3);
		decl->addElement(0, offset, VET_FLOAT3, VES_NORMAL);
		offset += VertexElement::getTypeSize(VET_FLOAT3);
		decl->addElement(0, offset, VET_FLOAT2, VES_TEXTURE_COORDINATES, 0);
		offset += VertexElement::getTypeSize(VET_FLOAT2);

		HardwareVertexBufferSharedPtr vbuf = 
			HardwareBufferManager::getSingleton().createVertexBuffer(
			offset, NUM_VERTICES, HardwareBuffer::HBU_STATIC_WRITE_ONLY);
		bind->setBinding(0, vbuf);

		vbuf->writeData(0, vbuf->getSizeInBytes(), vertices, true);

		sub->useSharedVertices = true;
		HardwareIndexBufferSharedPtr ibuf = HardwareBufferManager::getSingleton().
			createIndexBuffer(
			HardwareIndexBuffer::IT_16BIT, 
			NUM_INDICES,
			HardwareBuffer::HBU_STATIC_WRITE_ONLY);

		unsigned short faces[NUM_INDICES] = {
			// front
			0,1,2,
			0,2,3,

			// back
			4,5,6,
			4,6,7,

			// left
			8,9,10,
			8,10,11,

			// right
			12,13,14,
			12,14,15,

			// up
			16,17,18,
			16,18,19,

			// down
			20,21,22,
			20,22,23
		};

		sub->indexData->indexBuffer = ibuf;
		sub->indexData->indexCount = NUM_INDICES;
		sub->indexData->indexStart = 0;
		ibuf->writeData(0, ibuf->getSizeInBytes(), faces, true);

		mesh->_setBounds(AxisAlignedBox(-CUBE_HALF_SIZE, -CUBE_HALF_SIZE, -CUBE_HALF_SIZE,
			CUBE_HALF_SIZE, CUBE_HALF_SIZE, CUBE_HALF_SIZE), true);

		mesh->_setBoundingSphereRadius(CUBE_HALF_SIZE);
	}

void MovableText::_setupGeometry()
{
	assert(mpFont);
	assert(!mpMaterial.isNull());

	uint vertexCount = static_cast<uint>(mCaption.size() * 6);

	if (mRenderOp.vertexData)
	{
		// Removed this test as it causes problems when replacing a caption
		// of the same size: replacing "Hello" with "hello"
		// as well as when changing the text alignment
		//if (mRenderOp.vertexData->vertexCount != vertexCount)
		{
			delete mRenderOp.vertexData;
			mRenderOp.vertexData = NULL;
			mUpdateColors = true;
		}
	}

	if (!mRenderOp.vertexData)
		mRenderOp.vertexData = new VertexData();

	mRenderOp.indexData = 0;
	mRenderOp.vertexData->vertexStart = 0;
	mRenderOp.vertexData->vertexCount = vertexCount;
	mRenderOp.operationType = RenderOperation::OT_TRIANGLE_LIST;
	mRenderOp.useIndexes = false;

	VertexDeclaration  *decl = mRenderOp.vertexData->vertexDeclaration;
	VertexBufferBinding   *bind = mRenderOp.vertexData->vertexBufferBinding;
	size_t offset = 0;

	// create/bind positions/tex.ccord. buffer
	if (!decl->findElementBySemantic(VES_POSITION))
		decl->addElement(POS_TEX_BINDING, offset, VET_FLOAT3, VES_POSITION);

	offset += VertexElement::getTypeSize(VET_FLOAT3);

	if (!decl->findElementBySemantic(VES_TEXTURE_COORDINATES))
		decl->addElement(POS_TEX_BINDING, offset, Ogre::VET_FLOAT2, Ogre::VES_TEXTURE_COORDINATES, 0);

	HardwareVertexBufferSharedPtr ptbuf = HardwareBufferManager::getSingleton().createVertexBuffer(decl->getVertexSize(POS_TEX_BINDING),
		mRenderOp.vertexData->vertexCount,
		HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY);
	bind->setBinding(POS_TEX_BINDING, ptbuf);

	// Colours - store these in a separate buffer because they change less often
	if (!decl->findElementBySemantic(VES_DIFFUSE))
		decl->addElement(COLOUR_BINDING, 0, VET_COLOUR, VES_DIFFUSE);

	HardwareVertexBufferSharedPtr cbuf = HardwareBufferManager::getSingleton().createVertexBuffer(decl->getVertexSize(COLOUR_BINDING),
		mRenderOp.vertexData->vertexCount,
		HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY);
	bind->setBinding(COLOUR_BINDING, cbuf);

	size_t charlen = mCaption.size();
	//Real *pPCBuff = static_cast<Real*>(ptbuf->lock(HardwareBuffer::HBL_NORMAL));
	Real *pPCBuff=(Real*)malloc(ptbuf->getSizeInBytes());
	Real *oPCBuff=pPCBuff;

	float largestWidth = 0;
	float left = 0 * 2.0 - 1.0;
	float top = -((0 * 2.0) - 1.0);

	// Derive space width from a capital A
	if (fabs(mSpaceWidth) < 0.00001f)
		mSpaceWidth = mpFont->getGlyphAspectRatio('A') * mCharHeight * 2.0;

	// for calculation of AABB
	Ogre::Vector3 min=Ogre::Vector3::ZERO, max=Ogre::Vector3::ZERO, currPos=Ogre::Vector3::ZERO;
	Ogre::Real maxSquaredRadius = 0.0f;
	bool first = true;

	// Use iterator
	UTFString::iterator i, iend;
	iend = mCaption.end();
	bool newLine = true;
	Real len = 0.0f;

	if(mVerticalAlignment == MovableText::V_ABOVE)
	{
		// Raise the first line of the caption
		top += mCharHeight;
		for (i = mCaption.begin(); i != iend; ++i)
		{
			if (*i == '\n')
				top += mCharHeight * 2.0;
		}
	}

	for (i = mCaption.begin(); i != iend; ++i)
	{
		if (newLine)
		{
			len = 0.0f;
			for (UTFString::iterator j = i; j != iend && *j != '\n'; j++)
			{
				if (*j == ' ')
					len += mSpaceWidth;
//.........这里部分代码省略.........

Ogre::MeshPtr LodOutsideMarker::createConvexHullMesh(const String& meshName, const String& resourceGroupName)
{
    // Based on the wiki sample: http://www.ogre3d.org/tikiwiki/tiki-index.php?page=Generating+A+Mesh

    // Resource with given name should not exist!
    assert(MeshManager::getSingleton().getByName(meshName).isNull());

    generateHull(); // calculate mHull triangles.

    // Convex hull can't be empty!
    assert(!mHull.empty());

    MeshPtr mesh = MeshManager::getSingleton().createManual(meshName, resourceGroupName, NULL);
    SubMesh* subMesh = mesh->createSubMesh();

    vector<Real>::type vertexBuffer;
    vector<unsigned short>::type indexBuffer;
    // 3 position/triangle * 3 Real/position
    vertexBuffer.reserve(mHull.size() * 9);
    // 3 index / triangle
    indexBuffer.reserve(mHull.size() * 3);
    int id=0;
    // min & max position
    Vector3 minBounds(std::numeric_limits<Real>::max(), std::numeric_limits<Real>::max(), std::numeric_limits<Real>::max());
    Vector3 maxBounds(std::numeric_limits<Real>::min(), std::numeric_limits<Real>::min(), std::numeric_limits<Real>::min());

    for (size_t i = 0; i < mHull.size(); i++) {
        assert(!mHull[i].removed);
        for(size_t n = 0; n < 3; n++){
            indexBuffer.push_back(id++);
            vertexBuffer.push_back(mHull[i].vertex[n]->position.x);
            vertexBuffer.push_back(mHull[i].vertex[n]->position.y);
            vertexBuffer.push_back(mHull[i].vertex[n]->position.z);
            minBounds.x = std::min<Real>(minBounds.x, mHull[i].vertex[n]->position.x);
            minBounds.y = std::min<Real>(minBounds.y, mHull[i].vertex[n]->position.y);
            minBounds.z = std::min<Real>(minBounds.z, mHull[i].vertex[n]->position.z);
            maxBounds.x = std::max<Real>(maxBounds.x, mHull[i].vertex[n]->position.x);
            maxBounds.y = std::max<Real>(maxBounds.y, mHull[i].vertex[n]->position.y);
            maxBounds.z = std::max<Real>(maxBounds.z, mHull[i].vertex[n]->position.z);
        }
    }

    /// Create vertex data structure for 8 vertices shared between submeshes
    mesh->sharedVertexData = new VertexData();
    mesh->sharedVertexData->vertexCount = mHull.size() * 3;

    /// Create declaration (memory format) of vertex data
    VertexDeclaration* decl = mesh->sharedVertexData->vertexDeclaration;
    size_t offset = 0;
    // 1st buffer
    decl->addElement(0, offset, VET_FLOAT3, VES_POSITION);
    offset += VertexElement::getTypeSize(VET_FLOAT3);

    /// Allocate vertex buffer of the requested number of vertices (vertexCount) 
    /// and bytes per vertex (offset)
    HardwareVertexBufferSharedPtr vbuf = 
        HardwareBufferManager::getSingleton().createVertexBuffer(
        offset, mesh->sharedVertexData->vertexCount, HardwareBuffer::HBU_STATIC_WRITE_ONLY);
    /// Upload the vertex data to the card
    vbuf->writeData(0, vbuf->getSizeInBytes(), &vertexBuffer[0], true);

    /// Set vertex buffer binding so buffer 0 is bound to our vertex buffer
    VertexBufferBinding* bind = mesh->sharedVertexData->vertexBufferBinding; 
    bind->setBinding(0, vbuf);

    /// Allocate index buffer of the requested number of vertices (ibufCount) 
    HardwareIndexBufferSharedPtr ibuf = HardwareBufferManager::getSingleton().
        createIndexBuffer(
        HardwareIndexBuffer::IT_16BIT, 
        indexBuffer.size(), 
        HardwareBuffer::HBU_STATIC_WRITE_ONLY);

    /// Upload the index data to the card
    ibuf->writeData(0, ibuf->getSizeInBytes(), &indexBuffer[0], true);

    /// Set parameters of the submesh
    subMesh->useSharedVertices = true;
    subMesh->indexData->indexBuffer = ibuf;
    subMesh->indexData->indexCount = indexBuffer.size();
    subMesh->indexData->indexStart = 0;

    /// Set bounding information (for culling)
    mesh->_setBounds(AxisAlignedBox(minBounds, maxBounds));
    mesh->_setBoundingSphereRadius(maxBounds.distance(minBounds) / 2.0f);

    /// Set material to transparent blue
    subMesh->setMaterialName("Examples/TransparentBlue50");

    /// Notify -Mesh object that it has been loaded
    mesh->load();

    return mesh;
}

void BasicTutorial2::createColourCube()
{
    /// Create the mesh via the MeshManager
    Ogre::MeshPtr msh = MeshManager::getSingleton().createManual("ColourCube", "General");
 
    /// Create one submesh
    SubMesh* sub = msh->createSubMesh();
 
    const float sqrt13 = 0.577350269f; /* sqrt(1/3) */
 
    /// Define the vertices (8 vertices, each have 3 floats for position and 3 for normal)
    const size_t nVertices = 8;
    const size_t vbufCount = 3*2*nVertices;
    float vertices[vbufCount] = {
            -100.0,100.0,-100.0,        //0 position
            -sqrt13,sqrt13,-sqrt13,     //0 normal
            100.0,100.0,-100.0,         //1 position
            sqrt13,sqrt13,-sqrt13,      //1 normal
            100.0,-100.0,-100.0,        //2 position
            sqrt13,-sqrt13,-sqrt13,     //2 normal
            -100.0,-100.0,-100.0,       //3 position
            -sqrt13,-sqrt13,-sqrt13,    //3 normal
            -100.0,100.0,100.0,         //4 position
            -sqrt13,sqrt13,sqrt13,      //4 normal
            100.0,100.0,100.0,          //5 position
            sqrt13,sqrt13,sqrt13,       //5 normal
            100.0,-100.0,100.0,         //6 position
            sqrt13,-sqrt13,sqrt13,      //6 normal
            -100.0,-100.0,100.0,        //7 position
            -sqrt13,-sqrt13,sqrt13,     //7 normal
    };
 
    RenderSystem* rs = Root::getSingleton().getRenderSystem();
    RGBA colours[nVertices];
    RGBA *pColour = colours;
    // Use render system to convert colour value since colour packing varies
    rs->convertColourValue(ColourValue(1.0,0.0,0.0), pColour++); //0 colour
    rs->convertColourValue(ColourValue(1.0,1.0,0.0), pColour++); //1 colour
    rs->convertColourValue(ColourValue(0.0,1.0,0.0), pColour++); //2 colour
    rs->convertColourValue(ColourValue(0.0,0.0,0.0), pColour++); //3 colour
    rs->convertColourValue(ColourValue(1.0,0.0,1.0), pColour++); //4 colour
    rs->convertColourValue(ColourValue(1.0,1.0,1.0), pColour++); //5 colour
    rs->convertColourValue(ColourValue(0.0,1.0,1.0), pColour++); //6 colour
    rs->convertColourValue(ColourValue(0.0,0.0,1.0), pColour++); //7 colour
 
    /// Define 12 triangles (two triangles per cube face)
    /// The values in this table refer to vertices in the above table
    const size_t ibufCount = 36;
    unsigned short faces[ibufCount] = {
            0,2,3,
            0,1,2,
            1,6,2,
            1,5,6,
            4,6,5,
            4,7,6,
            0,7,4,
            0,3,7,
            0,5,1,
            0,4,5,
            2,7,3,
            2,6,7
    };
 
    /// Create vertex data structure for 8 vertices shared between submeshes
    msh->sharedVertexData = new VertexData();
    msh->sharedVertexData->vertexCount = nVertices;
 
    /// Create declaration (memory format) of vertex data
    VertexDeclaration* decl = msh->sharedVertexData->vertexDeclaration;
    size_t offset = 0;
    // 1st buffer
    decl->addElement(0, offset, VET_FLOAT3, VES_POSITION);
    offset += VertexElement::getTypeSize(VET_FLOAT3);
    decl->addElement(0, offset, VET_FLOAT3, VES_NORMAL);
    offset += VertexElement::getTypeSize(VET_FLOAT3);
    /// Allocate vertex buffer of the requested number of vertices (vertexCount) 
    /// and bytes per vertex (offset)
    HardwareVertexBufferSharedPtr vbuf = 
        HardwareBufferManager::getSingleton().createVertexBuffer(
        offset, msh->sharedVertexData->vertexCount, HardwareBuffer::HBU_STATIC_WRITE_ONLY);
    /// Upload the vertex data to the card
    vbuf->writeData(0, vbuf->getSizeInBytes(), vertices, true);
 
    /// Set vertex buffer binding so buffer 0 is bound to our vertex buffer
    VertexBufferBinding* bind = msh->sharedVertexData->vertexBufferBinding; 
    bind->setBinding(0, vbuf);
 
    // 2nd buffer
    offset = 0;
    decl->addElement(1, offset, VET_COLOUR, VES_DIFFUSE);
    offset += VertexElement::getTypeSize(VET_COLOUR);
    /// Allocate vertex buffer of the requested number of vertices (vertexCount) 
    /// and bytes per vertex (offset)
    vbuf = HardwareBufferManager::getSingleton().createVertexBuffer(
        offset, msh->sharedVertexData->vertexCount, HardwareBuffer::HBU_STATIC_WRITE_ONLY);
    /// Upload the vertex data to the card
    vbuf->writeData(0, vbuf->getSizeInBytes(), colours, true);
 
    /// Set vertex buffer binding so buffer 1 is bound to our colour buffer
    bind->setBinding(1, vbuf);
//.........这里部分代码省略.........