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        void ofApp::setupAnim() {
    numImages = 50;
    imageSpacing = height / numImages;
    
    image.setup("surface.png");
    image.setTextureScale(0.4);
    for(int i = 0; i < numImages; i++) {
        image.setTextureOffsetX(ofRandom(500));
        images.push_back(image);
        imgColors.push_back(ofColor(255, ofRandom(150), ofRandom(50), ofRandom(100)));
    }
    
    offset = ofRandom(5000);
}

void ofApp::updateAnim(){
    for(int i = 0; i < images.size(); i++) {
        noise = ofNoise(i, ofGetFrameNum() * 0.06 + offset);
        images.at(i).setPlaneHeight(noise * imageSpacing * 24);
        images.at(i).incrementTextureOffsetX(i % 2 == 0 ? 0.06 : -0.06);
    }
}

void ofApp::drawAnim() {
    ofBackground(ofColor::black);
    ofEnableAlphaBlending();
    for(int i = 0; i < images.size(); i++) {
        ofSetColor(imgColors.at(i));
        images.at(i).draw(0, halfImageSpacing + imageSpacing * i);
    }
    ofDisableAlphaBlending();
    
    if(ofGetFrameNum() == 100) {
        renderGif();
    }
}