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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 mouseEntered(int x, int y) {}; void mouseExited(int x, int y) {}; 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); ofSetColor(255); ofNoFill(); ofSetLineWidth(2); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5); auto span = 40; auto radius = span * 0.5; for (int x = span * -8; x <= span * 8; x += span) { for (int y = span * -8; y <= span * 8; y += span) { if (x == 0 && y == 0) { continue; } auto noise_param = abs(x) > abs(y) ? abs(x) : abs(y); auto noise_value = ofNoise(noise_param * 0.0035, ofGetFrameNum() * 0.005); auto deg_start = 0; if (noise_value < 0.2) { deg_start = 0; } else if (noise_value < 0.25) { deg_start = ofMap(noise_value, 0.2, 0.25, 0, 90); } else if (noise_value < 0.45) { deg_start = 90; } else if (noise_value < 0.50) { deg_start = ofMap(noise_value, 0.45, 0.50, 90, 180); } else if (noise_value < 0.70) { deg_start = 180; } else if (noise_value < 0.75) { deg_start = ofMap(noise_value, 0.7, 0.75, 180, 270); } else if (noise_value < 0.95) { deg_start = 270; } else if (noise_value < 1.0) { ofMap(noise_value, 0.95, 1.0, 270, 360); } deg_start += 180 + atan2(-y, -x) * RAD_TO_DEG; ofNoFill(); ofBeginShape(); for (int deg = deg_start - 135; deg <= deg_start + 135; deg++) { ofVertex(x + radius * 0.8 * cos(deg * DEG_TO_RAD), y + radius * 0.8 * sin(deg * DEG_TO_RAD)); } ofEndShape(); ofFill(); ofDrawCircle(glm::vec2(x + radius * 0.7 * cos((deg_start + 180) * DEG_TO_RAD), y + radius * 0.7 * sin((deg_start + 180) * DEG_TO_RAD)), 4); } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |