C++ SimpleGUI类代码示例

void ScheinrieseApp::setup()
{
    // GUI
    mGui = new SimpleGUI(this);
    mGui->addColumn();
    mGui->addLabel("CONTROLS");
    mGui->addParam("Threshold", &mThreshold, 0, 255, 127);
    mGui->addParam("Blur", &mBlur, 1, 20, 1);
    mGui->addParam("Tilt", &mKinectTilt, -30, 30, 0);
    mGui->addColumn();
    mGui->addLabel("DEBUG VIEW");
    mGui->addParam("Show Debug", &mShowDebug, true);
//    mGui->addButton("Show Debug")->registerClick(this, &ScheinrieseApp::showDebug);

    mGui->load(getResourcePath(RES_SETTINGS));
    mGui->setEnabled(false);

    mBlur = 1;
    mThreshold = 127;

    mShowDebug = true;

    // KINECT
    hasKinect = false;
    console() << "### INFO: There are " << Kinect::getNumDevices() << " Kinects connected." << endl;
    if (Kinect::getNumDevices() >= 1) {
        mKinect = Kinect( Kinect::Device() );
        mKinect.setTilt(mKinectTilt);
        hasKinect = true;
    }
}

void ButtonsAndTexturesApp::setup() {
    rotation = 0;
    screenshot = gl::Texture(getWindowWidth(), getWindowHeight()); //uninitialized texture with random pixels from GPU memory
        
    gui = new SimpleGUI(this);
	gui->lightColor = ColorA(1, 1, 0, 1);		
	gui->addLabel("CONTROLS");
    
    //let's add a button
    gui->addButton("Restart")->registerClick(this, &ButtonsAndTexturesApp::restartButtonClick);
    
    gui->addSeparator();
    gui->addLabel("SCREENSHOT");
    
    screenshotTextureControl = gui->addParam("Screenshot", &screenshot);
    
    //you can also store reference to it and add callback as a second step
    takeScreenshotButton = gui->addButton("Take screenshot");    
	cbTakeScreenshotButtonClick = takeScreenshotButton->registerClick(this, &ButtonsAndTexturesApp::takeScreenshotButtonClick);    
    
    //to stop listening to click do this:
    //takeScreenshotButton->unregisterClick(cbTakeScreenshotButtonClick);
    
	gui->load(CONFIG_FILE); //we load settings after specifying all the 
    //params because we need to know their name and type
	
	timer.start();
	prevTime = timer.getSeconds();

}

void GesichtertauschApp::setup() {
    
    console() << "+++ Gesichtertausch (PID " << getpid() << ")." << endl;
    
    mTime = 0.0;
    mSerialID = 0;
    FACE_COLOR_UNO = ColorA(0, 1, 1, 1);
    FACE_COLOR_DUO = ColorA(1, 0, 0, 1);
    BACKGROUND_IMAGE_COLOR = ColorA(1, 1, 1, 1);
    
    /* watchdog */
    mWatchdogHost = "localhost";
	mWatchdogPort = 8080;
	mWatchdogSender.setup(mWatchdogHost, mWatchdogPort);
    mWatchdogCounter = 0.0;
    mWatchdogInterval = 2.5;
    
    /* shader */
    try {
		mShader = gl::GlslProg( loadResource( RES_PASSTHRU_VERT ), loadResource( RES_BLUR_FRAG ) );
	}
	catch( gl::GlslProgCompileExc &exc ) {
		console() << "Shader compile error: " << std::endl;
		console() << exc.what();
	}
	catch( ... ) {
		console() << "Unable to load shader" << std::endl;
	}
    
    /* settings */
    mGui = new SimpleGUI(this);
    mGui->addParam("WINDOW_WIDTH", &WINDOW_WIDTH, 0, 2048, 640);
    mGui->addParam("WINDOW_HEIGHT", &WINDOW_HEIGHT, 0, 2048, 480);
    mGui->addParam("CAMERA_WIDTH", &CAMERA_WIDTH, 0, 2048, 640);
    mGui->addParam("CAMERA_HEIGHT", &CAMERA_HEIGHT, 0, 2048, 480);
    mGui->addParam("DETECTION_WIDTH", &DETECTION_WIDTH, 0, 2048, 320);
    mGui->addParam("DETECTION_HEIGHT", &DETECTION_HEIGHT, 0, 2048, 240);
    mGui->addParam("FULLSCREEN", &FULLSCREEN, false, 0);
    mGui->addParam("TRACKING", &TRACKING, 0, 1, 0);
    //
    mGui->addParam("FRAME_RATE", &FRAME_RATE, 1, 120, 30);
    mGui->addParam("MIN_TRACKING_DISTANCE", &MIN_TRACKING_DISTANCE, 1, 100, 50);
    mGui->addParam("TIME_BEFOR_IDLE_DEATH", &TIME_BEFOR_IDLE_DEATH, 0, 10, 0.5);
    mGui->addParam("MIN_LIFETIME_TO_VIEW", &MIN_LIFETIME_TO_VIEW, 0, 10, 1.0);
    mGui->addParam("ENABLE_SHADER", &ENABLE_SHADER, 0, 1, 0);
    mGui->addParam("FACE_COLOR_UNO", &FACE_COLOR_UNO, ColorA(0, 1, 1, 1), SimpleGUI::RGB);
    mGui->addParam("FACE_COLOR_DUO", &FACE_COLOR_DUO, ColorA(1, 1, 1, 1), SimpleGUI::RGB);
    mGui->addParam("BACKGROUND_IMAGE_COLOR", &BACKGROUND_IMAGE_COLOR, ColorA(1, 1, 1, 1), SimpleGUI::RGB);
    mGui->addParam("FACE_BORDER_SCALE", &FACE_BORDER_SCALE, 0, 3, 0.7);
    mGui->addParam("FACE_FADE_BORDER_SCALE", &FACE_FADE_BORDER_SCALE, 1, 2, 1.4);
            
    /* clean up controller window */
    mGui->getControlByName("WINDOW_WIDTH")->active=false;
    mGui->getControlByName("WINDOW_HEIGHT")->active=false;
    mGui->getControlByName("CAMERA_WIDTH")->active=false;
    mGui->getControlByName("CAMERA_HEIGHT")->active=false;
    mGui->getControlByName("DETECTION_WIDTH")->active=false;
    mGui->getControlByName("DETECTION_HEIGHT")->active=false;
    mGui->getControlByName("FULLSCREEN")->active=false;
    mGui->getControlByName("TRACKING")->active=false;
    mGui->getControlByName("BACKGROUND_IMAGE_COLOR")->active=false;
    mGui->getControlByName("BACKGROUND_IMAGE_COLOR")->active=false;
    
    mGui->load(getResourcePath(RES_SETTINGS));
    mGui->setEnabled(false);
    
    setWindowSize( WINDOW_WIDTH, WINDOW_HEIGHT );
    setFullScreen( FULLSCREEN );
    if (FULLSCREEN) {
        hideCursor();
//        switch_resolution (WINDOW_WIDTH, WINDOW_HEIGHT, 60.0);
    }
    
    mFont = Font(loadResource("pf_tempesta_seven.ttf"), 8);

    /* setting up capture device */
    mCameraTexture = gl::Texture(CAMERA_WIDTH, CAMERA_HEIGHT);
    switch (TRACKING) {
        case 0:
            mFaceDetection = new FeatureDetectionCinder();
            break;
#ifdef COMPILE_CAPTURE_FIREFLY
        case 1:
            mFaceDetection = new FeatureDetectionFireFly();
            break;
#endif
#ifdef COMPILE_CAPTURE_OPENCV
        case 2:
            mFaceDetection = new FeatureDetectionOpenCV();
            break;
#endif
        default:
            console() << "### choosing default tracking method." << endl;
            mFaceDetection = new FeatureDetectionCinder();
            break;
    }

    mGui->addParam("DETECT_FLAGS",&(mFaceDetection->DETECT_FLAGS), CV_HAAR_DO_CANNY_PRUNING, CV_HAAR_DO_ROUGH_SEARCH, CV_HAAR_DO_CANNY_PRUNING);
    mGui->addParam("DETECT_SCALE_FACTOR",&(mFaceDetection->DETECT_SCALE_FACTOR), 1.1, 5, 1.2);
    mGui->addParam("DETECT_MIN_NEIGHBORS",&(mFaceDetection->DETECT_MIN_NEIGHBORS), 1, 20, 2);
//.........这里部分代码省略.........

void RogersGuiApp::setup() {
    rotation = 0;
    screenshot = gl::Texture(getWindowWidth(), getWindowHeight()); //uninitialized texture with random pixels from GPU memory
	IntVarControl *ic;
	BoolVarControl *bc;
	PanelControl *pc;
	ByteVarControl *btc;
	FlagVarControl *fc;
	aString = "whatever";
	
    gui = new SimpleGUI(this);
	gui->lightColor = ColorA(1, 1, 0, 1);
	gui->addColumn();
	gui->addLabel("> READ ONLY");
    gui->addSeparator();
	gui->addLabel("READONLY");
	gui->addParam("String", &aString);						// !NEW! Update aString will update label 
	gui->addParam("Window Width", &windowWidth, 0, 1920, getWindowWidth())->setReadOnly();		// !NEW! No slider, just value
	gui->addParam("Window Height", &windowHeight, 0, 1080, getWindowHeight())->setReadOnly();	// !NEW! No slider, just value
	gui->addParam("FPS", &FPS, 0, 60, 0)->setReadOnly();	// !NEW! No slider, just value
    gui->addSeparator();
    
	// Textures
	gui->addLabel("> TEXTURES");
    gui->addSeparator();
    takeScreenshotButton = gui->addButton("Take screenshot");    
	takeScreenshotButton->registerClick(this, &RogersGuiApp::takeScreenshotButtonClick);    
    screenshotTextureControl = gui->addParam("Screenshot", &screenshot);
	screenshotTextureControl->refreshRate = 0.0;		// !NEW! let's refresh manually
	//screenshotTextureControl->refreshRate = 0.1;		// !NEW! use this for movies or syphon
    //takeScreenshotButton->unregisterClick(cbTakeScreenshotButtonClick);
    gui->addSeparator();
    gui->addParam("Null Texture example", &nullTex);	// !NEW! Null textures will be marked so
	
    //
	// ROGER:: From Grouping example
	gui->addColumn();
	gui->addLabel("> CONTROLS");
    gui->addSeparator();
    gui->addButton("Restart Animation")->registerClick(this, &RogersGuiApp::restartButtonClick);
	bc = gui->addParam("Auto Rotation ON", &autoRotation, true);
	bc->nameOff = "Auto Rotation OFF";	// !NEW! Alternative label when OFF
	gui->addParam("Rotation", &rotation, 0, 360, 0)->setDisplayValue();
	gui->addParam("Size", &size, 100, 600, 200)->setDisplayValue();
	gui->addParam("Background", &colorBack, Color(0.1, 0.1, 0.5), SimpleGUI::RGB); //use R,G,B,A sliders
	gui->addParam("Color", &color, ColorA(1, 0.2, 0.2, 0.1), SimpleGUI::RGB); //use R,G,B,A sliders
	gui->addParam("HSV", &colorBackHSV, Color(0.1, 0.1, 0.5), SimpleGUI::HSV);
	gui->addParam("HSV+A", &colorHSV, ColorA(1, 0.2, 0.2, 0.1), SimpleGUI::HSV);
    gui->addSeparator();
	gui->addLabel("RENDER TYPE");
	gui->addParam("Fill", &fill, true, RENDER_TYPE_GROUP); //if we specify group id, we create radio button set
	bc = gui->addParam("Stroke", &stroke, false, RENDER_TYPE_GROUP); //i.e. only one of the buttons can be active at any time	
	pc = gui->addPanel();
	bc->switchPanel( pc );		// !NEW! Automatically open/close a panel
	gui->addParam("Thickness", &thickness, 1, 10);
	
	//
	// LIST CONTROL
	gui->addColumn();
	gui->addLabel("> LISTS");
    gui->addSeparator();
    gui->addButton("Increase List")->registerClick(this, &RogersGuiApp::addToList);
    gui->addButton("Decrease List")->registerClick(this, &RogersGuiApp::removeFromList);
	valueLabels[0] = "val 0";
	valueLabels[1] = "val 1";
	valueLabels[2] = "val 2";
    gui->addSeparator();
	theDropDownControl = gui->addParamDropDown("Drop-Down List", &listVal, valueLabels);	// !NEW! Drop-Down control
    gui->addSeparator();
	theListControl = gui->addParamList("Explicit List", &listVal, valueLabels);				// !NEW! List control
    gui->addSeparator();
    gui->addLabel("just a label");
	
	//
	// INTS CONTROL
	gui->addColumn();
	gui->addLabel("> INTS");
    gui->addSeparator();
	gui->addParam("Int Radio (<=10)", &intValue1, 1, 3, 0)->setDisplayValue();		// !NEW! small int range will be displayed as radios
	gui->addParam("Int Radio (<=10)", &intValue2, 1, 10, 0)->setDisplayValue();		// !NEW! small int range will be displayed as radios
	gui->addParam("Int slider (>10)", &intValue3, 1, 11, 0)->setDisplayValue();		// !NEW! Display the value beside labels
	// stepped
    gui->addSeparator();
	ic = gui->addParam("Int Step 2", &intValue4, 0, 10, 0);
	ic->setDisplayValue();
	ic->setStep(2);														// !NEW! int step
	ic = gui->addParam("Int Step 2", &intValue5, 0, 18, 0);
	ic->setDisplayValue();
	ic->setStep(2);														// !NEW! int step
	ic = gui->addParam("Int Step 2", &intValue6, 0, 20, 0);
	ic->setDisplayValue();
	ic->setStep(2);														// !NEW! int step
	
	//
	// BYTE CONTROL
	gui->addColumn();
	gui->addLabel("> BYTES");
    gui->addSeparator();
	gui->addParam("Byte", &byteValue1, 0)->setDisplayValue();			// !NEW! ranges from 0-255
	btc = gui->addParam("Byte as char", &byteValue2, 0);				// !NEW! display as char
//.........这里部分代码省略.........

void GroupingApp::setup() {
	fbo = gl::Fbo(getWindowWidth(), getWindowHeight());
	
	gui = new SimpleGUI(this, Font(loadResource(RES_SGUI_FONT), 8));
	gui->lightColor = ColorA(1, 1, 0, 1);	
	gui->addColumn();
	gui->addLabel("CONTROLS");
	gui->addParam("Rotation", &rotation, 0, 360, 0);
	gui->addParam("Size", &size, 100, 600, 200); 	
	gui->addParam("Color", &color, ColorA(0,0.5,1,0.5), SimpleGUI::RGB); //use R,G,B,A sliders
	gui->addColumn();	
	gui->addLabel("RENDER TYPE");
	gui->addParam("Fill", &fill, true, RENDER_TYPE_GROUP); //if we specify group id, we create radio button set
	gui->addParam("Stroke", &stroke, false, RENDER_TYPE_GROUP); //i.e. only one of the buttons can be active at any time	
	strokePanel = gui->addPanel();
	gui->addParam("Thickness", &thickness, 1, 10);
	gui->addColumn();
	gui->addLabel("OPTIONS");
	gui->addParam("Auto Rotation", &autoRotation, false); 	
	gui->addColumn();
	gui->addLabel("PREVIEW");
	gui->addParam("PreviewTex", &fbo.getTexture()); 	
	
	gui->load(CONFIG_FILE); //we load settings after specifying all the 
	//params because we need to know their name and type
	
	timer.start();
	prevTime = timer.getSeconds();
	
	
}

void ScheinrieseApp::handleKinect()
{
    if (!hasKinect) {
        return;
    }

    if( mKinectTilt != mKinect.getTilt() ) {
        mKinect.setTilt( mKinectTilt );
    }

    if( mKinect.checkNewDepthFrame() ) {
        mDepthTexture = mKinect.getDepthImage();
    }

    if( mKinect.checkNewVideoFrame() ) {
        mColorTexture = mKinect.getVideoImage();
    }

    /* debug view */
    if (mColorTexture && !mDebugViewColor) {
        mGui->addLabel("COLOR");
        mDebugViewColor = mGui->addParam("COLOR", &mColorTexture);
        mDebugViewColor->var = &mColorTexture;
        console() << "color" << endl;
    }

    if (mDepthTexture && !mDebugViewDepth) {
        mGui->addLabel("DEPTH");
        mDebugViewDepth = mGui->addParam("DEPTH", &mDepthTexture);
        mDebugViewDepth->var = &mDepthTexture;
        console() << "depth" << endl;
    }
}

void RogersGuiApp::keyDown( KeyEvent event ) {
	switch(event.getChar()) {				
		case 'd': gui->dump(); break; //prints values of all the controls to the console			
		case 'l': gui->load(CONFIG_FILE); break;
		case 's': gui->save(CONFIG_FILE); break;					
	}
	switch(event.getCode()) {
		case KeyEvent::KEY_ESCAPE: quit(); break;
	}
}

void ButtonsAndTexturesApp::draw(){
    float currTime = timer.getSeconds();
	float deltaTime = currTime - prevTime;
	prevTime = currTime;
    
    rotation += deltaTime/2;
    
    gl::clear(ColorA(0.1, 0.1, 0.5, 0.92));
    gl::enableAdditiveBlending();
    gl::disableDepthRead();    
    gl::pushMatrices();
    gl::translate(Vec3f(getWindowWidth()/2, getWindowHeight()/2, 0));
    
    gl::color(ColorA(1, 0.2, 0.2, 0.1));    
    for(int i=0;i<50; i++) {
        gl::rotate(Vec3f(0, 0, rotation));
        gl::drawSolidRect(Rectf(20, 20, 140, 140));
    }
    
    gl::color(ColorA(0.5, 0.25, 0.0, 0.05));    
    for(int i=0;i<50; i++) {
        gl::rotate(Vec3f(0, 0, rotation/4));
        gl::drawSolidRect(Rectf(50, 50, 340, 340));
    }
    
    gl::enableDepthRead();    
    gl::disableAlphaBlending();
    gl::popMatrices();	
	gui->draw();
}

void RogersGuiApp::draw(){
    float currTime = timer.getSeconds();
	float deltaTime = currTime - prevTime;
	prevTime = currTime;
    
	if (autoRotation)
		rotation += deltaTime/2;
    
    gl::clear( colorBack );
    gl::enableAdditiveBlending();
    gl::disableDepthRead();    
    gl::pushMatrices();
    gl::translate(Vec3f(getWindowWidth()/2, getWindowHeight()/2, 0));
    
    gl::color( color );    
    for(int i=0;i<50; i++) {
        gl::rotate(Vec3f(0, 0, rotation));
        gl::drawSolidRect(Rectf(20, 20, 140, 140));
    }
    
    gl::color(ColorA(0.5, 0.25, 0.0, 0.05));    
    for(int i=0;i<50; i++) {
        gl::rotate(Vec3f(0, 0, rotation/4));
        gl::drawSolidRect(Rectf(50, 50, 340, 340));
    }
    
    gl::enableDepthRead();    
    gl::disableAlphaBlending();
    gl::popMatrices();	
	
	FPS = getAverageFps();
	gui->draw();
	
	//std::cout << "LIST = " << listVal << std::endl;
}

void CALLBACK
	OnGUIEvent(int ID)
{
	switch(ID)
	{
	case PLACE_TOWER:
		gui.GetButton(PLACE_TOWER)->SetPressed(true);
		return;
	}

}

void ScheinrieseApp::draw()
{
    gl::clear( Color( 0, 0, 0 ) );
    gl::setMatricesWindow( getWindowWidth(), getWindowHeight() );
    glColor3f( 1.0f, 1.0f, 1.0f );

    /* debug view */
    drawDebug();

    //	glPushMatrix();
    //	for (int i = 0; i < mContours.size(); i++) {
    //		glColor3f(0.0f,1.0f,1.0f);
    //		glBegin( GL_LINE_STRIP );
    //		for (int j = 0; j < mContours[i].size(); j+=10) {
    //			glVertex2f( mContours[i][j].x, mContours[i][j].y);
    //		}
    //		glEnd();
    //	}
    //	glPopMatrix();

    /*
     //for (int i = 0; i < mContours.size(); i++) {
     //		vector<p2t::Point*> polyline;
     //		for (int j = 0; j < mContours[i].size(); j+=1) {
     //			polyline.push_back(new p2t::Point(mContours[i][j].x, mContours[i][j].y));
     //		}
     //		if (polyline.size() > 9) {
     //		cout << "Number of line points = " << polyline.size() << endl;
     //		CDT* cdt = new CDT(polyline);
     //		cdt->Triangulate();
     //		//vector<p2t::Triangle*> triangles = cdt->GetTriangles();
     //		//cout << "Number of triangles = " << triangles.size() << endl;
     //		}
     //	}

     gl::setMatricesWindow( getWindowWidth(), getWindowHeight() );
     glPushMatrix();
     glTranslatef(200,200,0);
     GLdouble quad1[4*3] = { -100,300,0, 0,0,0, 100,300,0, 0,200,0 };
     tessellate(quad1, 12);
     glPopMatrix();

     for (int i = 0; i < mContours.size(); i++) {
     gl::setMatricesWindow( getWindowWidth(), getWindowHeight() );
     glPushMatrix();
     for (int j = 0; j < mContours[i].size(); j+=1) {

     }
     glPopMatrix();
     }
     */
    // GUI
    mGui->draw();
}

void GesichtertauschApp::keyDown( KeyEvent pEvent ) {
    switch(pEvent.getChar()) {				
        case 'd': mGui->dump(); break;
        case 'l': mGui->load(getResourcePath(RES_SETTINGS)); break;
        case 's': mGui->save(getResourcePath(RES_SETTINGS)); break;
//        case 'm':
//            CGDirectDisplayID mDisplayID = getSettings().getDisplay()->getCGDirectDisplayID();
//            CGDisplayConfigRef pConfigRef;
//            CGBeginDisplayConfiguration (&pConfigRef);
//            CGConfigureDisplayOrigin (pConfigRef,
//                                      mDisplayID,
//                                      -100, 0);
//            CGCompleteDisplayConfiguration (pConfigRef, kCGConfigureForAppOnly);
//            break;
    }
    switch(pEvent.getCode()) {
        case KeyEvent::KEY_ESCAPE:  setFullScreen( false ); quit(); break;
        case KeyEvent::KEY_SPACE: mGui->setEnabled(!mGui->isEnabled());break;
    }
}

void RogalarmApp::keyDown( KeyEvent event )
{
	if( event.getChar() == 'f' ){
		mFullscreen = !mFullscreen; 
		setFullScreen(mFullscreen);
	} else if( event.getChar() == 'p' ){
		cout << "User Position = " << mUserPos << endl;
	} else if( event.getChar() == 'd' ){
		mGui->dump();
	} 
	
}

void ScheinrieseApp::keyDown( KeyEvent event )
{
    switch(event.getChar()) {
    case 'd':
        mGui->dump();
        break;
    case 'l':
        mGui->load(getResourcePath(RES_SETTINGS));
        break;
    case 's':
        mGui->save(getResourcePath(RES_SETTINGS));
        break;
    }
    switch(event.getCode()) {
    case KeyEvent::KEY_ESCAPE:
        quit();
        break;
    case KeyEvent::KEY_SPACE:
        mGui->setEnabled(!mGui->isEnabled());
    }
}

void GroupingApp::draw() {
	float currTime = timer.getSeconds();
	float deltaTime = currTime - prevTime;
	prevTime = currTime;
	
	if (autoRotation) {
		rotation += deltaTime * 60;
		rotation = fmod(rotation, 360);
	}
	
	fbo.bindFramebuffer();
	
	gl::pushMatrices();
	gl::clear(ColorA(0.2, 0.2, 0.2, 1.0));
	gl::translate(Vec2f(getWindowWidth()/2, getWindowHeight()/2));
	gl::rotate(rotation);
	gl::color(color);
	gl::enableAlphaBlending();
	gl::disableDepthRead();
	
	if (fill) {
		gl::translate(Vec2f(-50, -50));
		gl::drawSolidRect(Rectf(-size/2, -size/2, size/2, size/2));
		gl::translate(Vec2f(+100, +100));
		gl::drawSolidRect(Rectf(-size/2, -size/2, size/2, size/2));
	}
	else if (stroke) {
		glLineWidth(thickness);
		gl::translate(Vec2f(-50, -50));
		gl::drawLine(Vec2f(-size/2, -size/2), Vec2f( size/2, -size/2));
		gl::drawLine(Vec2f( size/2, -size/2), Vec2f( size/2,  size/2));
		gl::drawLine(Vec2f( size/2,  size/2), Vec2f(-size/2,  size/2));
		gl::drawLine(Vec2f(-size/2,  size/2), Vec2f(-size/2, -size/2));		
		gl::translate(Vec2f(+100, +100));
		gl::drawLine(Vec2f(-size/2, -size/2), Vec2f( size/2, -size/2));
		gl::drawLine(Vec2f( size/2, -size/2), Vec2f( size/2,  size/2));
		gl::drawLine(Vec2f( size/2,  size/2), Vec2f(-size/2,  size/2));
		gl::drawLine(Vec2f(-size/2,  size/2), Vec2f(-size/2, -size/2));
		glLineWidth(1);
	}
	gl::popMatrices();	
	
	fbo.unbindFramebuffer();
	
	gl::color(ColorA(1,1,1,1));
	gl::draw(fbo.getTexture());
	
	strokePanel->enabled = stroke ? true : false;
	gui->draw();
}