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        void ofApp::setup(){
    ofSetWindowShape(500, 500);
    gif.setupPaused(130, 176);
    gif.fadeInOut(3, 2);

    numLayers = 2;
    masker.setup(numLayers, ISOLATE_LAYERS);
    masker.toggleOverlay();
    
    img2.setup("glass3.png", 0.2);
    img1.setup("pcb-bw.png", 2.0);
    
    horizontalMasks.setup(10, gif.height);
    verticalMasks.setup(3, gif.width);
    
    ofSetWindowShape(1200, 1200);
}

void ofApp::update(){
    masker.beginLayer(0);
    {
        ofBackground(ofColor::black);
        img1.incrementTextureScale(0.006);
        img1.draw();
    }
    masker.endLayer(0);
    
    masker.beginMask(0);
    {
        ofBackground(ofColor::black);
        horizontalMasks.draw();
        gif.rotateAroundCenter(90);
        verticalMasks.draw();
    }
    masker.endMask(0);

    masker.beginLayer(1);
    {
        masker.drawLayer(0);
    }
    masker.endLayer(1);
    
    masker.beginMask(1);
    {
        masker.drawLayer(0);
    }
    masker.endMask(1);
}

void ofApp::draw(){
    gif.begin();
    {
        ofEnableAlphaBlending();
        img2.incrementTextureScale(-0.006);

        masker.drawLayer(1);
        ofSetColor(ofColor::white, ceil(ofRandom(6)) * 3);
        img2.draw();
        if(ofRandom(1) > 0.45) {
            ofSetColor(ofColor::white, 255);
            gif.rotateAroundCenter(90 * ceil(ofRandom(3)));
            
            for(int i = 0; i < ofRandom(2, 10); i++) {
                masker.drawLayer(1);
            }
        }else if(ofRandom(1) > 0.75) {
            img1.setTexturePosition(ofRandom(2), ofRandom(2));
            img1.setTextureScale(ofRandom(-5, 5));
            gif.rotateAroundCenter(90 * ceil(ofRandom(3)));
            ofSetColor(ofColor::white, ofRandom(10, 20));
            img1.draw();
        }
    }
    gif.endCaptureDraw();
    masker.drawOverlay();
}

void MaskArray::setup(int _number, float _size) {
    number = _number;
    size = _size;
    unitSize = size / number;
    
    for(int i = 0; i < size; i++) {
        alphas.push_back(ofRandom(24));
        speeds.push_back(ceil(ofRandom(3)));
        directions.push_back(ofRandom(1) > 0.5 ? 1 : -1);
    }
}

void MaskArray::draw() {
    for(int i = 0; i < number; i++) {
        alphas.at(i) += speeds.at(i) * directions.at(i);
        bounce(i);
        ofSetColor(ofColor(ofColor::white, alphas.at(i)));
        ofRect(0, unitSize * i, size, unitSize);
    }
}

void MaskArray::bounce(int i) {
    if(alphas.at(i) < 0) {
        alphas.at(i) = 0;
        directions.at(i) = 1;
    }

    if(alphas.at(i) > 24) {
        alphas.at(i) = 24;
        directions.at(i) = -1;
    }
}

void MaskArray::debug() {
    for(int i = 0; i < number; i++) {
        cout << i << " " << alphas.at(i) << endl;
    }
    
    cout << "=======" << endl << endl << endl;
}