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Noise関数で360度に円を配置しています。ノイズ関数の引数はRadius + FrameNumなので伝播していきます。
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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) {}; ofEasyCam cam; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofBackground(0); ofSetWindowTitle("Insta"); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); float radius_span = 15; for (float radius = radius_span; radius < ofGetWidth() / 2; radius += radius_span) { ofColor color; color.setHsb(ofMap(radius, radius_span, ofGetWidth() / 2, 0, 255), 255, 255); ofSetColor(color); float noise_value = ofNoise(radius * 0.0005 - ofGetFrameNum() * 0.001) * 360; float x = radius * cos(noise_value); float y = radius * sin(noise_value); ofDrawCircle(x, y, 15); } this->cam.end(); } //======================================================================== int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |