• permalink
• code
• show snippet

        void ofApp::setupAnim() {
    ofEnableSmoothing();
    ofSetLineWidth(4);
    masker.setup(width, height);
    paused = true;
    
    img1.loadImage("chihuly-1.png");
    img2.loadImage("chihuly-2.png");
    numBoxSets = 200;
}

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

void ofApp::updateAnim(){
    ofEnableAlphaBlending();
    ofEnableBlendMode(OF_BLENDMODE_ADD);
    
    masker.beginBackground();
    img1.draw(0, 0);
    ofSetColor(ofColor(ofColor::black, 40));
    ofRect(0, 0, width, height);
    masker.endBackground();
    
    masker.beginMask();
    ofBackground(ofColor::black);
    for(int i = 0; i < numBoxSets; i++) {
        for(int j = 0; j < width; j+=20) {
            ofSetColor(ofColor::white, ofRandom(10, 35));
            
            ofRect(
                   ofRandom(j - 10, j + 10),
                   ofMap(i, 0, numBoxSets, width * 0.5, width),
                   ofRandom(2, 20),
                   ofRandom(20, 50));
        }
        rotateScreen(10);
    }
    masker.endMask();
    
    masker.beginForeground();
    img2.draw(0, 0);
    ofSetColor(ofColor(ofColor::black, 40));
    ofRect(0, 0, width, height);
    masker.endForeground();
    
    ofDisableBlendMode();
    ofDisableAlphaBlending();
}

void ofApp::drawAnim() {
    masker.draw();
    ofEnableAlphaBlending();
    for(int i = 0; i < numBoxSets; i++) {
        for(int j = 0; j < width; j+=20) {
            if(j % 40 == 0) ofSetColor(ofColor::white, ofRandom(1, 7));
            else ofSetColor(ofColor::black, ofRandom(1, 7));
            
            ofRect(
                ofRandom(j - 10, j + 10),
                ofMap(i, 0, numBoxSets, 30, -30),
                ofRandom(2, 20),
                ofRandom(20, 50));
        }
        rotateScreen(10);
    }
    ofDisableAlphaBlending();
    
    if(ofGetFrameNum() == 50) paused = false;
    if(ofGetFrameNum() == 80) renderGif();
}