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円の中に円を描いて出来た柄。
The pattern is made up of a circle with a circle inside a circle.
[ Source ]
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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) {}; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetColor(39, 64); ofNoFill(); ofSetCircleResolution(72); ofSetLineWidth(0.2); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { for (int x = 210; x < ofGetWidth(); x += 300) { for (int y = 210; y < ofGetHeight(); y += 300) { ofPushMatrix(); ofTranslate(x, y); int radius_start = 120; int radius_span = 1; auto noise_seed = ofRandom(1000); ofDrawCircle(glm::vec2(), radius_start); for (int radius = radius_start - radius_span; radius >= 0; radius -= radius_span) { auto tmp_radius = radius_span; auto deg = ofMap(ofNoise(noise_seed + radius * 0.005 - ofGetFrameNum() * 0.015), 0, 1, -720, 720); auto location = glm::vec2(tmp_radius * cos(deg * DEG_TO_RAD), tmp_radius * sin(deg * DEG_TO_RAD)); ofDrawCircle(location, radius); ofTranslate(location); } ofPopMatrix(); } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |