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三角のうず～
Triangle vortex.
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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(30); ofSetWindowTitle("openframeworks"); ofBackground(239); ofSetColor(39); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5); int deg = 0; int deg_span = 10; for (int radius = 0; radius <= 430; radius += 2) { float circumference = 2 * PI * radius; float small_radius = circumference / 360 * deg_span * 0.5; ofPushMatrix(); ofPoint point = ofPoint(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)); ofTranslate(point); ofNoFill(); ofDrawCircle(ofPoint(), small_radius); int start_deg = ofMap(ofNoise(radius * 0.05 + ofGetFrameNum() * 0.05), 0, 1, 0, 720); ofFill(); ofBeginShape(); for (int small_deg = start_deg; small_deg < start_deg + 360; small_deg += 120) { ofVertex(small_radius * cos(small_deg * DEG_TO_RAD), small_radius * sin(small_deg * DEG_TO_RAD)); } ofEndShape(true); ofPopMatrix(); deg += deg_span; } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |