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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) {}; float noise_seed; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openframeworks"); ofBackground(39); ofSetLineWidth(2); } //-------------------------------------------------------------- void ofApp::update() { if (ofGetFrameNum() % 60 == 0) { this->noise_seed = ofRandom(1000); } ofSeedRandom(this->noise_seed); } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5); ofColor color; int hue = ofRandom(255); float len = 15; for (int radius = 50; radius < 320; radius += 15) { ofRotateY(180); vector<glm::vec2> vertices_1, vertices_2; float direction = radius % 20 == 0 ? 1 : -1; float deg_start = ofRandom(360); float deg_len = (ofGetFrameNum() * 6) % 540; float deg_end = deg_start + deg_len; for (float deg = deg_start; deg < deg_end; deg += 1) { vertices_1.push_back(glm::vec2((radius - len * 0.5) * cos(deg * DEG_TO_RAD), (radius - len * 0.5) * sin(deg * DEG_TO_RAD))); vertices_2.push_back(glm::vec2((radius + len * 0.5) * cos(deg * DEG_TO_RAD), (radius + len * 0.5) * sin(deg * DEG_TO_RAD))); } reverse(vertices_2.begin(), vertices_2.end()); color.setHsb(hue, 150, 255); ofFill(); ofSetColor(color); ofBeginShape(); ofVertices(vertices_1); ofVertices(vertices_2); ofEndShape(true); ofNoFill(); ofSetColor(0); ofBeginShape(); ofVertices(vertices_1); ofVertices(vertices_2); ofEndShape(true); hue = (hue + (int)ofRandom(20, 120)) % 255; } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |