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五角形をグルっと回してみました。綺麗だけと、じーっと見てると酔うかも
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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) {}; void draw_pentagon(int radius); }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofBackground(239); ofSetWindowTitle("Insta"); ofSetColor(39); ofSetLineWidth(3); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2); int radius_span = 10; ofNoFill(); for (int radius = ofGetWidth(); radius > radius_span; radius -= radius_span) { ofRotate(ofGetFrameNum() * -0.05); this->draw_pentagon(radius); } ofFill(); this->draw_pentagon(radius_span * 2); } //-------------------------------------------------------------- void ofApp::draw_pentagon(int radius) { int deg_span = 72; ofBeginShape(); for (int deg = 0; deg < 360; deg += deg_span) { ofVertex(ofPoint(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD))); } ofEndShape(true); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |