• permalink
• code
• show snippet

        void ofApp::setupAnim() {
    ofEnableSmoothing();
    maskOpacity = 0;
}

void ofApp::drawAnim() {
    ofEnableAlphaBlending();
    
    ofSetColor(0, 0, 0, 30);
    ofRect(0, 0, width, height);
    
    ofSetColor(ofColor::red);
    for(int i = 0; i < 8; i++) {
        for(int j = 0; j < 10; j++) {
            x = ofRandom(0, width);
            y = ofRandom(-40, -20);
            ofLine(x, y, x, y + halfWidth + 50);
        }
        rotateScreen(45);
    }
    
    if(ofGetFrameNum() > 12) {
        ofSetColor(ofColor(ofColor::white, maskOpacity));
        ofRect(0, 0, width, height);
        maskOpacity += 20;
    }
    
    ofDisableAlphaBlending();
    
    if(maskOpacity > 255) {
        renderGif();
    }
}

void ofApp::rotateScreen(float degrees) {
    ofTranslate(halfWidth, halfHeight, 0);
    ofRotate(degrees);
    ofTranslate(-halfWidth, -halfHeight, 0);
}