C++ Float3函数代码示例

		Air::U1 Actor::Create()
		{
			if (m_Info.strModelName.empty()	||	m_Info.pSection	==	NULL)
			{
				return false;
			}
			m_pNode	=	m_Info.pSection->GetActorNode()->CreateChildSceneNode();
			SetModelName(m_Info.strModelName);

			Physics::Object::Info poInfo;
			poInfo.fMass	=	1;
			poInfo.uiShapeCount	=	1;
			poInfo.pShapeArray[0].SetCylinder(Float3(0,0,0),0.5,1);
			m_pHitShape	=	PhysicsSystem::GetSingleton()->CreateProduct<Physics::Object>(m_strProductName+"_CD",&poInfo);
			m_pHitShape->SetUserData(this);
			m_pNode->attachObject(m_pHitShape);
			return true;
		}

	void RenderSetSorted::AddRenderNodeSolution(RenderNode *nodePtr)
	{
		static bool added = false;
		if(!added)
		{
			PrintConsole::GetReference().AddSolution(L"ED2", "Sorting & Hierarchy", Float3(1.0f, 0.0f, 0.0f), 
				L"RenderSetSorted::AddRenderNodeSolution");
			added = true;
		}

		RenderShape *pShape = (RenderShape *)nodePtr;
		// Empty list
		if (0 == headPtr)
		{
			tailPtr = pShape;
			tailPtr->SetNext(0);
			headPtr = pShape;
		}
		else
		{
			RenderShape *pPrevious = 0;
			RenderShape *pCurrent = (RenderShape *)headPtr;

			// Check if this node is first
			if(!SortFunc(pCurrent, pShape))
			{
				pPrevious = pCurrent;
				pCurrent = (RenderShape *)pCurrent->GetNext();

				// Find where this node goes
				while(pCurrent && !SortFunc(pCurrent, pShape))
				{
					pPrevious = pCurrent;
					pCurrent = (RenderShape *)pCurrent->GetNext();
				}
				pPrevious->SetNext(pShape);
			}
			else
				headPtr = pShape;
			pShape->SetNext(pCurrent);
			if(!pCurrent)
				tailPtr = pShape;
		}
	}

Float3 MlRachis::matchNormal(const Vector3F & wv, const Matrix33F & space)
{
	Vector3F ov = space.transform(wv);

	Vector3F va = ov;
	va.y = 0.f;
	va.z -= 0.05f;
	va.normalize();
	float a = acos(Vector3F::XAxis.dot(va));
	if(va.z > 0.f) a = -a;
	
	Vector3F vb = ov;
	vb.z = 0.f;
	vb.normalize();
	float b = acos(Vector3F::XAxis.dot(vb));
	if(vb.y < 0.f) b = -b;
	
	return Float3(a, b, 0.f);
}

		void Frustum::BuildPlane(){


			Float3 dir,nc,fc,X,Y,Z;

			Z = Float3(-m_vDirection.x,-m_vDirection.y,-m_vDirection.z);
			Z.Normalize();

			X = m_vUp.Cross(Z);
			X.Normalize();

			Y = Z.Cross(X);

			nc = m_vPosition - Z * m_fNear;
			fc = m_vPosition - Z * m_fFar;

			Float3 ntl,ntr,nbl,nbr,ftl,ftr,fbl,fbr;
			float nw,nh,fw,fh;

			float	tang = (float)tan(m_fAngle * 0.5f) ;
			nh = m_fNear * tang;
			nw = nh * m_fAspect; 
			fh = m_fFar  * tang;
			fw = fh * m_fAspect;

			ntl = nc + Y * nh - X * nw;
			ntr = nc + Y * nh + X * nw;
			nbl = nc - Y * nh - X * nw;
			nbr = nc - Y * nh + X * nw;

			ftl = fc + Y * fh - X * fw;
			ftr = fc + Y * fh + X * fw;
			fbl = fc - Y * fh - X * fw;
			fbr = fc - Y * fh + X * fw;

			m_vecPlane[enFS_Top].SetVertex(ntr,ntl,ftl);
			m_vecPlane[enFS_Bottom].SetVertex(nbl,nbr,fbr);
			m_vecPlane[enFS_Left].SetVertex(ntl,nbl,fbl);
			m_vecPlane[enFS_Right].SetVertex(nbr,ntr,fbr);
			m_vecPlane[enFS_Near].SetVertex(ntl,ntr,nbr);
			m_vecPlane[enFS_Far].SetVertex(ftr,ftl,fbl);
		}

LoaderFbxTextureDesc::LoaderFbxTextureDesc()
{
	textureName_ = "Unknown";
	fileName_	 = "Unknown";
	
	scale_					= Float2(0.0f, 0.0f);
	translation_			= Float2(0.0f, 0.0f);
	rotation_				= Float3(0.0f, 0.0f, 0.0f);
	swap_					= false;
	alphaSource_			= 0;
	croppingLeft_			= 0;
	croppingTop_			= 0;
	croppingRight_			= 0;
	croppingBottom_			= 0;
	mappingType_			= 0;
	planarMappingNormal_	= 0;
	blendMode_				= 0;
	defaultAlpha_			= 0.0f;
	materialUse_			= 0;
	textureUse_				= 0;
}

	virtual void OnUpdate()
	{
		float k = Root::Instance()->GetTime();
		float r = 3.0f;

		float x = Math::Cos(k) * r;
		float z = Math::Sin(k) * r;

		gBillboard->SetPosition(Float3(x, 5, z));

		gLightDir->SetPosition(Float3(x, 5, z));
		gLightDir->SetDirection(-Float3(x, 0, z));

		gLightPoint->SetPosition(Float3(x, 5, z));
		gLightPoint->SetDirection(-Float3(x, 0, z));

		gLightSpot->SetPosition(Float3(x, 5, z));
		gLightSpot->SetDirection(-Float3(x, 0, z));
	}

void ImGui::beginContainer(int left, int right, int bottom, int top, Container *container)
{
    if (left > right or bottom > top)
    {
        Command command;
        command.type = Command::PushScissor;
        command.scissor.left = 0;
        command.scissor.right = 0;
        command.scissor.bottom = 0;
        command.scissor.top = 0;

        commands.append(command);
        return;
    }

    rectangle(left, right+10, bottom-10, top, 0.44f, 1.0f, 0.0f, 1.0f, Float3(1.0f), Float4(0.0f));

    Command command;
    command.type = Command::PushScissor;
    command.scissor.left = left;
    command.scissor.right = right;
    command.scissor.bottom = bottom;
    command.scissor.top = top;

    commands.append(command);

    scrollX = container->scrollX;
    scrollY = container->scrollY;

    containerLeft = left;
    containerRight = right;
    containerTop = top;
    containerBottom = bottom;

    container->left = left;
    container->right = right;
    container->bottom = bottom;
    container->top = top;
}

//==================================================================
bool ParamsFindP(	ParamList &params,
					const SymbolList &globalSymbols,
					Float3	*pOut_vectorP,
					int	expectedN,
					int fromIdx )
{
	bool	gotP = false;
	
	for (size_t i=fromIdx; i < params.size(); i += 2)
	{
		DASSERT( params[i].type == Param::STR );
		
		const Symbol* pSymbol = globalSymbols.FindSymbol( params[i] );
		if ( pSymbol && pSymbol->IsName( "P" ) )
		{
			DASSTHROW( (i+1) < params.size(), "Invalid number of arguments" );
			
			const FltVec	&fltVec = params[ i+1 ].NumVec();

			DASSTHROW( (int)fltVec.size() == 3 * expectedN,
							"Invalid number of arguments."
							 " Expecting %i but it's %u", 3 * expectedN, fltVec.size() );

			DASSTHROW( (int)(fltVec.size() % 3) == 0,
							"Invalid number of arguments."
							 " Should be multiple of 3 but it's %u", fltVec.size() );

			size_t	srcN = fltVec.size();

			for (size_t si=0, di=0; si < srcN; si += 3, di += 1)
				pOut_vectorP[ di ] = Float3( &fltVec[ si ] );
			
			return true;
		}
	}
	
	return false;
}

//----------------------------------------------------------------------------
TriMesh* RoughPlaneSolidBox::CreateRamp ()
{
    float x = 8.0f;
    float y = 8.0f;
    float z = y*Mathf::Tan((float)mModule.Angle);

    VertexFormat* vformat = VertexFormat::Create(2,
        VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
        VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 0);
    int vstride = vformat->GetStride();

    VertexBuffer* vbuffer = new0 VertexBuffer(6, vstride);
    VertexBufferAccessor vba(vformat, vbuffer);

    vba.Position<Float3>(0) = Float3(-x, 0.0f, 0.0f);
    vba.Position<Float3>(1) = Float3(+x, 0.0f, 0.0f);
    vba.Position<Float3>(2) = Float3(-x, y, 0.0f);
    vba.Position<Float3>(3) = Float3(+x, y, 0.0f);
    vba.Position<Float3>(4) = Float3(-x, y, z);
    vba.Position<Float3>(5) = Float3(+x, y, z);
    vba.TCoord<Float2>(0, 0) = Float2(0.25f, 0.0f);
    vba.TCoord<Float2>(0, 1) = Float2(0.75f, 0.0f);
    vba.TCoord<Float2>(0, 2) = Float2(0.0f, 1.0f);
    vba.TCoord<Float2>(0, 3) = Float2(1.0f, 1.0f);
    vba.TCoord<Float2>(0, 4) = Float2(0.25f, 1.0f);
    vba.TCoord<Float2>(0, 5) = Float2(0.75f, 1.0f);

    IndexBuffer* ibuffer = new0 IndexBuffer(18, sizeof(int));
    int* indices = (int*)ibuffer->GetData();
    indices[ 0] = 0;  indices[ 1] = 1;  indices[ 2] = 4;
    indices[ 3] = 1;  indices[ 4] = 5;  indices[ 5] = 4;
    indices[ 6] = 0;  indices[ 7] = 4;  indices[ 8] = 2;
    indices[ 9] = 1;  indices[10] = 3;  indices[11] = 5;
    indices[12] = 3;  indices[13] = 2;  indices[14] = 4;
    indices[15] = 3;  indices[16] = 4;  indices[17] = 5;

    TriMesh* ramp = new0 TriMesh(vformat, vbuffer, ibuffer);

    std::string path = Environment::GetPathR("Metal.wmtf");
    Texture2D* texture = Texture2D::LoadWMTF(path);
    ramp->SetEffectInstance(Texture2DEffect::CreateUniqueInstance(texture,
        Shader::SF_LINEAR, Shader::SC_REPEAT, Shader::SC_REPEAT));

    return ramp;
}

	SLSound::SLSound()
		: mCategory(0)
		, mFlags(0)
	{
		mBQObjectI = NULL;
		mBQPlayI = NULL;
		mVolumeI = NULL;
		mBQBufferQueueI = NULL;
		mBQEffectSendI = NULL;

		mPosition = Float3(0, 0, 0);
		mVolume = 1;
		mAttenStart = mAttenEnd = 0;
		mInvAttenDist = 1;

		mPlayTime = 0;
		mPlayOffset = 0;
		mPlayEnd = FALSE;

		mFadeMode = 0;
		mFadeTime = SL_FADETIME;

		i_thread = NULL;
	}

	// extents, renderable, nearDistance, depth, nearPlaneArea
	void Camera::SetLODSolution(IRenderer* renderable, float maxExtent, float nearDistance, 
		float depth, float minArea)
	{
		static bool added = false;
		if(!added)
		{
			PrintConsole::GetReference().AddSolution(L"ED2", "LOD", Float3(1.0f, 0.0f, 0.0f), 
				L"Camera::SetLODSolution");
			added = true;
		}

		unsigned int numLODs = renderable->GetNumLODs();

		if( numLODs != 1 )
		{
			float projectedRadius = (nearDistance * maxExtent) / depth;
			
			float projectedArea = (float)M_PI * projectedRadius * projectedRadius;

			float areaOccupiedRatio = min( 1.0f, projectedArea / minArea );

			renderable->SetCurrentLOD( (unsigned int)((numLODs-1) * areaOccupiedRatio) );
		}
	}

	virtual void OnInit()
	{
		SetupUI();

		// Create Mesh
		MeshSourcePtr pMeshSource = MeshManager::Instance()->LoadMesh("Mesh/fox.mesh");
		
		gMesh = new Mesh;
		gMesh->SetSource(pMeshSource);
		gMesh->LoadAnimation("Idle1", "Mesh/fox_idle1.anim");
		gMesh->SetLighting(true);

		gMesh->PlayAnimation("Idle1");

		LookMesh(gMesh);

		// Setup Main Light
		World::Instance()->MainLight()->SetDirection(Float3(-1, 0, 1));
		World::Instance()->MainLight()->SetAmbient(Float3(0.2f, 0.2f, 0.2f));
		World::Instance()->MainLight()->SetDiffuse(Float3(0.2f, 0.2f, 0.2f));

		// Create Lights
		gLightDir = new Light(eLightType::DIRECTION);
		gLightPoint = new Light(eLightType::POINT);
		gLightSpot = new Light(eLightType::SPOT);

		gLightDir->SetDiffuse(Float3(1, 0, 0));
		gLightPoint->SetDiffuse(Float3(0, 1, 0));
		gLightSpot->SetDiffuse(Float3(0, 0, 1));

		gLightDir->SetVisible(true);
		gLightPoint->SetVisible(false);
		gLightSpot->SetVisible(false);

		// Create Billboard
		gBillboard = new Billboard;
		gBillboard->SetSize(Float2(1, 1));
		gBillboard->SetTexture("flare.png");
		gBillboard->GetMaterial()->blendMode = eBlendMode::ADD;
	}

			U1 Resource::CreateHardwareBuff( MeshHDBuffer* pOutBuff,CalCoreMesh* pInMesh ){
				std::vector<ABuff>	vertexData;
				std::vector<UInt>								indexData;
	
				SInt	iMeshCount	=	pInMesh->getCoreSubmeshCount();
				SInt	iVertexCount	=	0;
				SInt	iIndexCount		=	0;
				//首先计算顶点数 和 索引数
				for(SInt i=0;i<iMeshCount;i++){
					CalCoreSubmesh*	pSubMesh	=	pInMesh->getCoreSubmesh(i);
					iVertexCount	+=	pSubMesh->getVectorVertex().size();
					iIndexCount		+=	pSubMesh->getFaceCount()*3;
				}
				if(	iVertexCount	==	0	||
					iIndexCount		==	0)
				{
					return	false;
				}
				//分配空间
				vertexData.resize(iVertexCount);
				indexData.resize(iIndexCount);
	
				SInt	iV	=	0;
				SInt	iI	=	0;
	
				
				for(SInt i=0;i<iMeshCount;i++){
					CalCoreSubmesh*	pSubMesh							=	pInMesh->getCoreSubmesh(i);
					//计算切线
					pSubMesh->enableTangents(0,true);
	
					std::vector<CalCoreSubmesh::Vertex>&							lstVector	=	pSubMesh->getVectorVertex();
					std::vector<std::vector<CalCoreSubmesh::TangentSpace> >&		lstTangent	=	pSubMesh->getVectorVectorTangentSpace();
					std::vector<std::vector<CalCoreSubmesh::TextureCoordinate> >&	lstTexcoord	=	pSubMesh->getVectorVectorTextureCoordinate();
					std::vector<CalCoreSubmesh::Face>&								lstFace		=	pSubMesh->getVectorFace();
					
					SInt iFaceCount	=	lstFace.size();
					//索引缓冲
					for(SInt	j=0;j<iFaceCount;j++){
						indexData[iI]	=	lstFace[j].vertexId[0]	+	iV;
						indexData[iI+1]	=	lstFace[j].vertexId[1]	+	iV;
						indexData[iI+2]	=	lstFace[j].vertexId[2]	+	iV;
						iI	+=	3;
					}
					
					//顶点缓冲数据
					for(SInt j=0;j<iVertexCount;j++){
						CalCoreSubmesh::Vertex&				ver		=	lstVector[j];
						CalCoreSubmesh::TangentSpace		tang	=	lstTangent[0][j];
						CalCoreSubmesh::TextureCoordinate	uv		=	lstTexcoord[0][j];
		
						//位置
						vertexData[iV].Position		=	Float3(ver.position.x,ver.position.y,ver.position.z);


						SInt	iBoneCount	=	ver.vectorInfluence.size();
						for(SInt	k=0;k<4;k++){
							if(k<iBoneCount){
 								vertexData[iV].BoneWeight[k]	=	ver.vectorInfluence[k].weight*255.0f;
								//如果只传递自己需要的矩阵 
								//骨骼索引变成0~n
 								vertexData[iV].BoneIndex[k]		=	ver.vectorInfluence[k].boneId;
							}else{
								vertexData[iV].BoneWeight[k]	=	0;
								vertexData[iV].BoneIndex[k]		=	0;

							}

						}

						//法线
						vertexData[iV].Normal		=	Float3(ver.normal.x,ver.normal.y,ver.normal.z);
						//UV
						vertexData[iV].UV.x		=	uv.u;
						vertexData[iV].UV.y		=	uv.v;
						//切线
						vertexData[iV].Tangent.x		=	tang.tangent.x;
						vertexData[iV].Tangent.y		=	tang.tangent.y;
						vertexData[iV].Tangent.z		=	tang.tangent.z;
	
	
	
						iV++;
					}
					AString	strName	=	m_strProductName	+	pInMesh->getName();
					Render::Vertex::IDeclare::Info	dInfo;
					dInfo.SetPNTT_Animation();
 					pOutBuff->pVertexDeclare	=	Render::System::GetSingleton()->CreateProduct<Render::Vertex::IDeclare>("PNTTANIM",&dInfo);
					Render::Buffer::Info		vInfo;
					vInfo.SetVertexBuffer(iVertexCount,52);
					vInfo.InitData			=	&vertexData[0];
					pOutBuff->pVertexBuff		=	Render::System::GetSingleton()->CreateProduct<Render::Buffer>(strName+"VB",&vInfo);

					vInfo.SetIndexBuffer32(iFaceCount*3);
					vInfo.InitData			=	&indexData[0];
					pOutBuff->pIndexBuff		=	Render::System::GetSingleton()->CreateProduct<Render::Buffer>(strName+"IB",&vInfo);

				}
				return	true;
			}

Float3<T> Float3<T>::operator -() const
{
	return Float3(-this->x, -this->y, -this->z);
}

void PhysicsComponent::onEvent(Event* e)
{
	EventType type = e->getType();
	switch(type)
	{
	case EVENT_ATTRIBUTE_UPDATED: //Removes physics objects when the corresponding physics attribute is removed
	{
		Event_AttributeUpdated* attributeUpdated = static_cast<Event_AttributeUpdated*>(e);
		int attributeIndex = attributeUpdated->index;
		if(attributeUpdated->attributeEnum == ATTRIBUTE_PHYSICS)
		{
			if(attributeUpdated->isDeleted)
			{
				if(attributeIndex < physicsObjects_->size() && physicsObjects_->at(attributeIndex) != nullptr)
				{
  					dynamicsWorld_->removeRigidBody(physicsObjects_->at(attributeIndex));
					delete physicsObjects_->at(attributeIndex);
					physicsObjects_->at(attributeIndex) = nullptr;
				}
				else
				{
					DEBUGPRINT("Mismatch when synchronizing deletion of physics objects with physics attributes");
				}
			}
			else if(attributeUpdated->isCreated)
			{
			}
			else
			{
				itrPhysics.at(attributeIndex)->reloadDataIntoBulletPhysics = true;
			}
		}
		/*else if(attributeUpdated->attributeEnum == ATTRIBUTE_CAMERA)
		{
			if(attributeUpdated->isDeleted)
			{
  				dynamicsWorld_->removeRigidBody(frustumPhysicsObjects_->at(attributeIndex));
				delete frustumPhysicsObjects_->at(attributeIndex);
				frustumPhysicsObjects_->at(attributeIndex) = nullptr;
			}
		}*/
		break;
	}
	case EVENT_MODIFY_PHYSICS_OBJECT:
	{
		Event_ModifyPhysicsObject* modifyPhysicsObject = static_cast<Event_ModifyPhysicsObject*>(e);

		int physicsAttributeIndex = modifyPhysicsObject->ptr_physics.index();
		if(physicsAttributeIndex < physicsObjects_->size() && physicsAttributeIndex > -1)
		{
			PhysicsObject* physicsObject = physicsObjects_->at(physicsAttributeIndex);
			if(physicsObject != NULL)
			{
				//Cast void pointer sent in Event_ModifyPhysicsObject to its expected data type and modify physics object accordingly
				switch(modifyPhysicsObject->modifyWhatDataInPhysicsObjectData)
				{
				case XKILL_Enums::ModifyPhysicsObjectData::GRAVITY:
					{
						Float3* gravity = static_cast<Float3*>(modifyPhysicsObject->data);
						
						physicsObject->setGravity(btVector3(gravity->x, gravity->y, gravity->z));
						break;
					}
				case XKILL_Enums::ModifyPhysicsObjectData::VELOCITY:
					{
						Float3* velocity = static_cast<Float3*>(modifyPhysicsObject->data);
						
						physicsObject->setLinearVelocity(btVector3(velocity->x, velocity->y, velocity->z));
						break;
					}
				case XKILL_Enums::ModifyPhysicsObjectData::VELOCITYPERCENTAGE:
					{
						Float3* velocityPercentage = static_cast<Float3*>(modifyPhysicsObject->data);
						
						btVector3 currentLinearVelocity = physicsObject->getLinearVelocity();
						physicsObject->setLinearVelocity(btVector3(currentLinearVelocity.x()*velocityPercentage->x, currentLinearVelocity.y()*velocityPercentage->y, currentLinearVelocity.z()*velocityPercentage->z));
						break;
					}
				case XKILL_Enums::ModifyPhysicsObjectData::FLAG_STATIC:
					{
						bool* staticPhysicsObject = static_cast<bool*>(modifyPhysicsObject->data);
						
						if(*staticPhysicsObject == true)
						{
							physicsObject->setCollisionFlags(physicsObject->getCollisionFlags() | btCollisionObject::CF_STATIC_OBJECT);
						}
						else if(*staticPhysicsObject == false)
						{
							physicsObject->setCollisionFlags(physicsObject->getCollisionFlags() & ~ btCollisionObject::CF_STATIC_OBJECT);
						}
						break;
					}
				case XKILL_Enums::ModifyPhysicsObjectData::COLLISIONFILTERMASK:
					{
						/*In order to modify "collisionFilterMask", a physics objects needs to be removed from the Bullet Physics dynamics world and then readded using "addRigidBody", where "collisionFilterMask" is passed as argument.
						Write physics object data to physics attribute, modify "collisionFilterMask", and set the "reloadDataIntoBulletPhysics" flag, and this class will handle the removal and addition of the physics object.*/
						
						short* collisionFilterMaskFromEvent = static_cast<short*>(modifyPhysicsObject->data);

						AttributePtr<Attribute_Physics> ptr_physics = itrPhysics.at(physicsAttributeIndex);
//.........这里部分代码省略.........