C++ Camera::setOrthoWindow方法代码示例

 void ReliefApp::GenerateRelief()
 {
     //Get depth data
     Ogre::TexturePtr depthTex = Ogre::TextureManager::getSingleton().createManual(  
         "DepthTexture",      // name   
         Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME,  
         Ogre::TEX_TYPE_2D,   // type   
         512,  // width   
         512,  // height   
         0,                   // number of mipmaps   
         //Ogre::PF_B8G8R8A8,   // pixel format
         Ogre::PF_FLOAT32_R,
         Ogre::TU_RENDERTARGET
         ); 
     Ogre::RenderTarget* pTarget = depthTex->getBuffer()->getRenderTarget();
     Ogre::Camera* pOrthCam = MagicCore::RenderSystem::GetSingleton()->GetMainCamera();
     pOrthCam->setProjectionType(Ogre::PT_ORTHOGRAPHIC);
     pOrthCam->setOrthoWindow(3, 3);
     pOrthCam->setPosition(0, 0, 3);
     pOrthCam->lookAt(0, 0, 0);
     pOrthCam->setAspectRatio(1.0);
     pOrthCam->setNearClipDistance(0.5);
     pOrthCam->setFarClipDistance(5);
     Ogre::Viewport* pViewport = pTarget->addViewport(pOrthCam);
     pViewport->setDimensions(0, 0, 1, 1);
     MagicCore::RenderSystem::GetSingleton()->RenderLightMesh3D("RenderMesh", "Depth", mpLightMesh);
     MagicCore::RenderSystem::GetSingleton()->Update();
     Ogre::Image img;
     depthTex->convertToImage(img);
     std::vector<double> heightField(512 * 512);
     for(int x = 0; x < 512; x++)  
     {  
         for(int y = 0; y < 512; y++)  
         {
             heightField.at(x * 512 + y) = (img.getColourAt(x, 511 - y, 0))[1];
         }
     }
     Ogre::TextureManager::getSingleton().remove("DepthTexture");
     //
     MagicDGP::LightMesh3D* pReliefMesh = MagicDGP::ReliefGeneration::PlaneReliefFromHeightField(heightField, 511, 511);
     //MagicDGP::LightMesh3D* pReliefMesh = MagicDGP::ReliefGeneration::CylinderReliefFromHeightField(heightField, 511, 511);
     if (pReliefMesh != NULL)
     {
         delete mpLightMesh;
         mpLightMesh = pReliefMesh;
         mpLightMesh->UnifyPosition(2);
         mpLightMesh->UpdateNormal();
     }
     MagicCore::RenderSystem::GetSingleton()->SetupCameraDefaultParameter();
     MagicCore::RenderSystem::GetSingleton()->RenderLightMesh3D("RenderMesh", "MyCookTorrance", mpLightMesh);
 }

void
    CinematicManager::createOrthoCamera(Ogre::Real windowW, Ogre::Real windowH, const Ogre::Vector3 &initialPos,
    const Ogre::Quaternion &initialOrient, Control* control)
{
    Ogre::Camera* cam = _scnMgr->createCamera(ORTHO_CAM_NAME + Ogre::StringConverter::toString(_camCurId));
    cam->setProjectionType(Ogre::PT_ORTHOGRAPHIC);
    cam->setOrthoWindow(100, 50);
    cam->setNearClipDistance(1);
    cam->setPosition(0.0f, 0.0f,  0.0f);
    //cam->setFarClipDistance(100.0f);
    cam->setFOVy(Ogre::Radian(Ogre::Math::PI / 2.0f));
    Ogre::SceneNode* defaultNode = _scnMgr->createSceneNode();
    defaultNode->setPosition(initialPos);
    defaultNode->setOrientation(initialOrient);
    defaultNode->attachObject(cam);
    _camsVec.push_back(new ZCameraInfo(_camsVec.size(), "ORTHOGRAPHIC", cam->getName(), control, cam));
}

    /**
     * This is the most basic "triangle" example, done as a Scene in Ogre.
     */
    Ogre::SceneManager* createTriangleScene() {
        Ogre::SceneManager* scene = mRoot->createSceneManager(Ogre::ST_GENERIC);

        // Configure camera (~ view & projection transforms, i.e. gluLookAt + glOrtho)
        Ogre::Camera* camera = scene->createCamera("MainCamera"); // We can use an arbitrary name here
        camera->setProjectionType(Ogre::PT_ORTHOGRAPHIC);
        camera->setOrthoWindow(2, 2);              // ~ glOrtho(-1, 1, -1, 1)
        camera->setAspectRatio((float) mWindow->getWidth() / mWindow->getHeight());
        camera->setNearClipDistance(0.5);
        camera->setPosition(Ogre::Vector3(0,0,1)); // Move camera away from (0, 0, 0), otherwise the triangle at z=0 will be clipped

        // Now add some geometry to the scene
        Ogre::ManualObject* triangle = scene->createManualObject("Triangle");

        // ~ glBegin, glVertex, glEnd
        // "BaseWhiteNoLighting" is a built-in name for a basic non-lit material
        triangle->begin("BaseWhiteNoLighting", Ogre::RenderOperation::OT_TRIANGLE_LIST);
        triangle->position(0, 0.5, 0);            // ~ glVertex.
                                                  // Contrary to OpenGL we *first* must create the vertex
        triangle->colour(Ogre::ColourValue::Red); // .. and then provide its attributes such as color (~ glColor)
        triangle->position(-0.5, -0.5, 0);
        triangle->colour(Ogre::ColourValue::Green);
        triangle->position(0.5, -0.5, 0);
        triangle->colour(Ogre::ColourValue::Blue);
        triangle->end();

        // Add the created triangle object to the scene graph
        // For this we create a SceneNode object, which will combine information about
        // the object's geometry with its modeling transform
        // (see frameRenderingQueued to understand how to rotate the triangle by changing this transform)
        scene->getRootSceneNode()->createChildSceneNode("Triangle")->attachObject(triangle);

        // Exercise 1: Create new object, add vertices, attach the object to a new SceneNode
        // ...

        return scene;
    }