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        void ofApp::setupAnim() {
    velocities[TEXTURE_OFFSET_TOP_RIGHT] = -0.004;
    velocities[TEXTURE_OFFSET_MIDDLE_RIGHT] = 0.004;
    velocities[TEXTURE_OFFSET_BOTTOM_RIGHT] = 0.004;
    
    image1.setup("cardboard.png", halfWidth, height, 1);
    image2.setup("cardboard.png", -halfWidth, height, 1);
    image2.setPlanePosition(width, 0);
}

void ofApp::updateAnim(){
    if(ofGetFrameNum() % 10 == 0) {
        lastOffset1 = getRandomOffset();
        image1.setTextureOffset(lastOffset1);
        lastOffset2 = getRandomOffset();
        image2.setTextureOffset(lastOffset2);
    }
    image1.incrementTextureOffsetY(velocities[lastOffset1]);
    image2.incrementTextureOffsetY(velocities[lastOffset2]);
}

void ofApp::drawAnim() {
    ofBackground(ofColor::black);
    image1.draw();
    image2.draw();
    if(ofGetFrameNum() == 70) {
        renderGif();
    }
}

ofxTexturePlaneOffset ofApp::getRandomOffset() {
    switch((int)floor(ofRandom(3))) {
        case 0:
            return TEXTURE_OFFSET_TOP_RIGHT;
        case 1:
            return TEXTURE_OFFSET_MIDDLE_RIGHT;
        case 2:
            return TEXTURE_OFFSET_BOTTOM_RIGHT;
    }
}