Sketch 2015-06-30
void ofApp::setup(){
finalFrame = 59;
frameDecay = 64;
lastDrawableFrameForLoop = finalFrame - (256 / frameDecay);
ofSetWindowShape(500, 500);
gif.setup(ofGetTimestampString("%Y-%m-%d"), finalFrame);
ofEnableSmoothing();
shapeSystem.setup();
masker.setup(4);
for(int i = 0; i < 4; i++) {
textures.push_back(texture);
textures.at(i).setup("road" + ofToString(i + 1) + ".png");
}
shapeSize = gif.width * 0.5;
thickness = gif.width * 0.45;
halfShapeSize = shapeSize * 0.5;
for(int i = 0; i < gif.width; i += shapeSize) {
for(int j = 0; j < gif.height; j += shapeSize) {
shape.setupHollowArc(30, thickness, shapeSize, 180);
shape.setColor(ofColor::fromHsb(ofRandom(100, 120), ofRandom(100, 255), ofRandom(100, 255)));
shape.setBlur(30);
shape.setPosition(ofVec3f(i + halfShapeSize, j + halfShapeSize, 0));
shape.rotateZ(ofRandom(360));
shapes.push_back(shape);
}
}
for(int i = 0; i < shapes.size(); i++) {
shapeSystem.add(shapes.at(i));
}
}
void ofApp::update(){
for(int i = 0; i < shapes.size(); i++) {
i % 2 == 0 ?
shapes.at(i).incrementRotateZ(12) :
shapes.at(i).incrementRotateZ(-12);
}
for(int i = 0; i < masker.numLayers(); i++) {
masker.beginLayer(i);
{
ofBackground(ofColor::black);
ofEnableAlphaBlending();
rotateScreen(90 * i);
shapeSystem.draw();
ofDisableAlphaBlending();
}
masker.endLayer(i);
masker.beginMask(i);
{
ofBackground(ofColor::black);
if(ofRandom(1) > 0.6 && ofGetFrameNum() <= lastDrawableFrameForLoop) {
int j = floor(ofRandom(3.9999999));
textures.at(j).setTextureScale(ofRandom(0.1, 2));
textures.at(j).setTexturePosition(ofRandom(-1, 1), ofRandom(-1, 1));
textures.at(j).draw();
}
}
masker.endMask(i);
}
}
void ofApp::draw(){
gif.begin();
{
ofEnableAlphaBlending();
if(ofGetFrameNum() == 0) {
ofBackground(ofColor::black);
} else {
ofSetColor(ofColor::black, frameDecay);
ofRect(0, 0, gif.width, gif.height);
}
masker.draw();
ofDisableAlphaBlending();
}
gif.endAndCaptureFrame();
gif.draw();
masker.drawOverlay();
}
void ofApp::rotateScreen(float degrees) {
ofTranslate(gif.halfWidth, gif.halfHeight, 0);
ofRotate(degrees);
ofTranslate(-gif.halfWidth, -gif.halfHeight, 0);
}
Shuffling through the patterns
