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        void ofApp::setupAnim() {
    masker.setup();
    layer1 = masker.newLayer();
    layer2 = masker.newLayer();
    layer3 = masker.newLayer();

    leafVertical.setup("leaf-vertical.png", 2, TEXTURE_OFFSET_BOTTOM_RIGHT);
    leafDiagonal.setup("leaf-diagonal.png", 2, TEXTURE_OFFSET_BOTTOM_RIGHT);
    leafStar.setup("leaf-star.png", 2, TEXTURE_OFFSET_MIDDLE_CENTER);
    
    layer1Alpha = 0;
    layer2Alpha = 0;
    layer3Alpha = 0;
}

void ofApp::updateAnim() {
    masker.beginLayer(layer1);
    {
        ofSetColor(ofColor::white);
        leafVertical.incrementTextureScale(0.02);
        leafVertical.incrementTextureOffset(0.01, 0.025);
        leafVertical.draw();
    }
    masker.endLayer(layer1);

    masker.beginMask(layer1);
    {
        ofBackground(ofColor::black);
        ofSetColor(ofColor::white, animateAlpha(0, 13, layer1Alpha));
        ofRect(0, 0, width, height);
    }
    masker.endMask(layer1);
    
    masker.beginLayer(layer2);
    {
        ofSetColor(ofColor::white);
        if(ofGetFrameNum() > 21) {
            leafDiagonal.incrementTextureScale(-0.04);
            leafDiagonal.incrementTextureOffset(0.016, 0.016);
        }
        leafDiagonal.draw();
    }
    masker.endLayer(layer2);
    
    masker.beginMask(layer2);
    {
        ofBackground(ofColor::black);
        ofSetColor(ofColor::white, animateAlpha(21, 39, layer2Alpha));
        ofRect(0, 0, width, height);
    }
    masker.endMask(layer2);
    
    masker.beginLayer(layer3);
    {
        ofSetColor(ofColor::white);
        if(ofGetFrameNum() > 36) {
            leafStar.incrementTextureScale(-0.04);
            leafStar.incrementTextureOffset(0.001, 0.001);
        }
        leafStar.draw();
    }
    masker.endLayer(layer3);
    
    masker.beginMask(layer3);
    {
        ofBackground(ofColor::black);
        ofSetColor(ofColor::white, animateAlpha(36, 50, layer3Alpha));
        ofRect(0, 0, width, height);
    }
    masker.endMask(layer3);
}

void ofApp::drawAnim() {
    ofBackground(ofColor::black);
    ofSetColor(ofColor::white);

    masker.draw();
    masker.drawOverlay();

    if(ofGetFrameNum() > 40 && layer3Alpha <= 0) {
        renderGif();
    }
}

float ofApp::animateAlpha(int fromFrame, int toFrame, float &alpha) {
    if(ofGetFrameNum() > fromFrame && ofGetFrameNum() <= toFrame && alpha < 255) {
        alpha += 30;
    }
    
    if(ofGetFrameNum() > toFrame && alpha > 0) {
        alpha -= 30;
    }
    
    return alpha;
}