C++ CameraUi类代码示例

void AudioVisualizerApp::mouseDrag( MouseEvent event )
{
	// handle mouse drag
	mCameraUi.mouseDrag( event.getPos(), event.isLeftDown(), event.isMiddleDown(), event.isRightDown() );
}

void AudioVisualizerApp::setup()
{
	// initialize signals
	signalChannelEnd = false;

	// make a list of valid audio file extensions and initialize audio variables
	const char* extensions[] = { "mp3", "wav", "ogg" };
	mAudioExtensions = vector<string>( extensions, extensions + 2 );
	mAudioPath = getAssetPath( "" );
	mIsAudioPlaying = false;

	// setup camera
	mCamera.setPerspective( 50.0f, 1.0f, 1.0f, 10000.0f );
	mCamera.lookAt( vec3( -kWidth / 4, kHeight / 2, -kWidth / 8 ), vec3( kWidth / 4, -kHeight / 8, kWidth / 4 ) );

	mCameraUi.setCamera( &mCamera );

	// create channels from which we can construct our textures
	mChannelLeft = Channel32f( kBands, kHistory );
	mChannelRight = Channel32f( kBands, kHistory );
	memset( mChannelLeft.getData(), 0, mChannelLeft.getRowBytes() * kHistory );
	memset( mChannelRight.getData(), 0, mChannelRight.getRowBytes() * kHistory );

	// create texture format (wrap the y-axis, clamp the x-axis)
	mTextureFormat.setWrapS( GL_CLAMP_TO_BORDER );
	mTextureFormat.setWrapT( GL_REPEAT );
	mTextureFormat.setMinFilter( GL_LINEAR );
	mTextureFormat.setMagFilter( GL_LINEAR );
	mTextureFormat.loadTopDown( true );

	// compile shader
	try {
		mShader = gl::GlslProg::create( loadAsset( "shaders/spectrum.vert" ), loadAsset( "shaders/spectrum.frag" ) );
	}
	catch( const std::exception& e ) {
		console() << e.what() << std::endl;
		quit();
		return;
	}

	// create static mesh (all animation is done in the vertex shader)
	std::vector<vec3>		positions;
	std::vector<Colorf>		colors;
	std::vector<vec2>		coords;
	std::vector<uint32_t>	indices;

	for( size_t h = 0; h < kHeight; ++h ) {
		for( size_t w = 0; w < kWidth; ++w ) {
			// add polygon indices
			if( h < kHeight - 1 && w < kWidth - 1 ) {
				size_t offset = positions.size();

				indices.emplace_back( offset );
				indices.emplace_back( offset + kWidth );
				indices.emplace_back( offset + kWidth + 1 );
				indices.emplace_back( offset );
				indices.emplace_back( offset + kWidth + 1 );
				indices.emplace_back( offset + 1 );
			}

			// add vertex
			positions.emplace_back( vec3( float( w ), 0, float( h ) ) );

			// add texture coordinates
			// note: we only want to draw the lower part of the frequency bands,
			//  so we scale the coordinates a bit
			const float part = 0.5f;
			float s = w / float( kWidth - 1 );
			float t = h / float( kHeight - 1 );
			coords.emplace_back( vec2( part - part * s, t ) );

			// add vertex colors
			colors.emplace_back( Color( CM_HSV, s, 0.5f, 0.75f ) );
		}
	}

	gl::VboMesh::Layout layout;
	layout.usage( GL_STATIC_DRAW );
	layout.attrib( geom::Attrib::POSITION, 3 );
	layout.attrib( geom::Attrib::COLOR, 3 );
	layout.attrib( geom::Attrib::TEX_COORD_0, 2 );

	mMesh = gl::VboMesh::create( positions.size(), GL_TRIANGLES, { layout }, indices.size(), GL_UNSIGNED_INT );
	mMesh->bufferAttrib( geom::POSITION, positions.size() * sizeof( vec3 ), positions.data() );
	mMesh->bufferAttrib( geom::COLOR, colors.size() * sizeof( vec3 ), colors.data() );
	mMesh->bufferAttrib( geom::TEX_COORD_0, coords.size() * sizeof( vec2 ), coords.data() );
	mMesh->bufferIndices( indices.size() * sizeof( uint32_t ), indices.data() );

	// play audio using the Cinder FMOD block
	FMOD::System_Create( &mFMODSystem );
	mFMODSystem->init( 32, FMOD_INIT_NORMAL | FMOD_INIT_ENABLE_PROFILE, NULL );
	mFMODSound = nullptr;
	mFMODChannel = nullptr;

	playAudio( findAudio( mAudioPath ) );

	mIsMouseDown = false;
	mMouseUpDelay = 30.0;
	mMouseUpTime = getElapsedSeconds() - mMouseUpDelay;

//.........这里部分代码省略.........

void ViewportArrayApp::mouseUp( MouseEvent event )
{
	if( currentViewport != -1 ) mCameraUi.setCamera( &mCameras[currentViewport] );
	mCameraUi.mouseUp( event );
}

void ViewportArrayApp::mouseWheel( MouseEvent event )
{
	int viewport = getViewportAt( mViewports, event.getPos() );
	if( viewport != -1 ) mCameraUi.setCamera( &mCameras[viewport] );
	mCameraUi.mouseWheel( event );
}

void cApp::setup(){
    mExp.setup(1920, 1080, 0, 100-1, GL_RGB, mt::getRenderPath(), 0, "test" );
    setWindowSize( 1920, 1080 );
    setWindowPos(0, 0);
    
    mPln.setSeed( 345 );
    mPln.setOctaves( 4 );
    
    cam = CameraPersp(1920, 1080, 55, 0.1, 100000);
    eye = vec3(0,0,1000);
    cam.lookAt(eye, vec3(0,0,0));
    camui.setCamera(&cam);
}

void GeometryApp::mouseDown( MouseEvent event )
{
	mRecenterCamera = false;

	mCamUi.mouseDown( event );

	if( getElapsedSeconds() - mLastMouseDownTime < 0.2f ) {
		mPrimitiveSelected = static_cast<Primitive>( static_cast<int>( mPrimitiveSelected ) + 1 );
		createGeometry();
	}

	mLastMouseDownTime = getElapsedSeconds();
}

void cApp::draw(){
    glPointSize(1);
    glLineWidth(1);
    gl::enableAlphaBlending();
    
    mExp.begin(camui.getCamera());{
        gl::clear();
        mt::drawCoordinate(100);
        vbo.draw();
    }
    mExp.end();
    
    mExp.draw();
    
    gl::pushMatrices();
    {
        gl::color(1, 1, 1);
        gl::drawString("fps      " + to_string( getAverageFps()),   vec2(20,20) );
        gl::drawString("frame    " + to_string( frame ),   vec2(20,35) );
    }
    gl::popMatrices();
    
}

void Choreo3DApp::update()
{
    setFrameRate(frameRate);
    
    //DISABLE CAMERA INTERACTION IF MOUSE IS OVER UI REGION
    if (getMousePos().x > 3 * getWindowWidth()/4. && camActive)
    {
        camActive = false;
        mCamUi.disconnect();
        mCamUi.disable();
        cout << "disabling camera UI" << endl;
    } else {
        if (!camActive)
        {
            mCamUi.connect(getWindow());
            mCamUi.enable();
        }
        camActive = true;
        cout << "enabling camera UI" << endl;
    }
    
    mGlsl->uniform("uColor", markerColour );
    
    if (!paused)
    {
        
        
        //UPDATE POSITIONS
        //MAP INSTANCE DATA TO VBO
        //WRITE NEW POSITIONS
        //UNMAP
        
        glm::vec3 *newPositions = (glm::vec3*)mInstanceDataVbo->mapReplace();
        
        for( int i = 0; i < jointList.size(); ++i )
        {
            
            float instanceX = jointList[i].jointPositions[FRAME_COUNT].x;
            float instanceY = jointList[i].jointPositions[FRAME_COUNT].y;
            float instanceZ = jointList[i].jointPositions[FRAME_COUNT].z;
            
            vec3 newPos(vec3(instanceX,instanceY, instanceZ)); //CREATE A NEW VEC3 FOR UPDATING THE VBO
            
            framePositions[i] = newPos;
            
        }
        
        //REPLACE VEC3s IN VBO BY INCREMENTING THE POINTER
        for (int i = 0; i < framePositions.size(); i++){
            *newPositions++ = framePositions[i];
        }
        
        handTrail.update(framePositions[26], dancerColor);
        
        //    std::cout << framePositions[17] << std::endl;
        
        
        skeleton.update(framePositions);

        
        mInstanceDataVbo->unmap();
        // std::cout << "position: " << positions[0] << std::endl;
        
        if (ribbonsActive)updateRibbons();
        
        //MANUALLY INCREMENT THE FRAME, IF THE FRAME_COUNT EXCEEDS TOTAL FRAMES, RESET THE COUNTER
        if (FRAME_COUNT < TOTAL_FRAMES)
        {
            FRAME_COUNT += 1;
        } else {
            FRAME_COUNT = 0;
        }
        
        //std::cout << getAverageFps() << std:: endl;
        // std::cout << "frame rate: " << getAverageFps() << ", frame count: " << FRAME_COUNT << std::endl;
        
        //define changed color
      //  Color temp = Color(dancerColor[0],dancerColor[1],dancerColor[2]);
        
        
        mCurrentFrame++; //MANUALLY ADVANCE THE CURRENT FRAME - WITH RESPECT TO THE DANCERS
    
    }
    
    updateGui();
}

void TextParticlesApp::mouseWheel( MouseEvent event )
{
	mCamUi.mouseWheel( event );
}

void cApp::resize(){
    CameraPersp & cam = const_cast<CameraPersp&>(camUi.getCamera());
    cam.setAspectRatio( getWindowAspectRatio() );
    camUi.setCamera( &cam );
}

void cApp::mouseDrag( MouseEvent event ){
    camUi.mouseDrag( event.getPos(), event.isLeftDown(), event.isMiddleDown(), event.isRightDown() );
}

void cApp::mouseDown( MouseEvent event ){
    camUi.mouseDown( event.getPos() );
}

void GeometryApp::mouseDrag( MouseEvent event )
{
	mCamUi.mouseDrag( event );
}

void TextParticlesApp::mouseUp( MouseEvent event )
{
	mCamUi.mouseUp( event );
}

void ArmyDemoApp::mouseDrag( MouseEvent event )
{
	mCamUi.mouseDrag( event.getPos(), event.isLeftDown(), event.isMiddleDown(), event.isRightDown() );
}