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#pragma once #include "ofMain.h" class ofApp : public ofBaseApp { public: void setup(); void update(); void draw(); void keyPressed(int key) {}; void keyReleased(int key) {}; void mouseMoved(int x, int y) {}; void mouseDragged(int x, int y, int button) {}; void mousePressed(int x, int y, int button) {}; void mouseReleased(int x, int y, int button) {}; void windowResized(int w, int h) {}; void dragEvent(ofDragInfo dragInfo) {}; void gotMessage(ofMessage msg) {}; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(0); ofNoFill(); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5); ofColor color; for (float base_deg = 0; base_deg < 360; base_deg += 1) { vector<glm::vec2> vertices; auto base_radius = ofRandom(720); auto speed = ofRandom(3, 5); auto deg_speed = ofRandom(2, 6); for (int i = 0; i < ofMap(deg_speed, 2, 6, 30, 10); i++) { auto deg = base_deg + (ofGetFrameNum() + i) * deg_speed; auto radius = 800 - (int)(base_radius + (ofGetFrameNum() + i) * speed) % 800; if (radius < 100) { radius = 100; } auto vertex = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)); if (i > 0 && glm::distance(vertex, vertices.back()) > 100) { continue; } vertices.push_back(vertex); } color.setHsb(ofRandom(255), 80, 255); ofSetColor(color); ofBeginShape(); ofVertices(vertices); ofEndShape(); } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |