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円周を分割、ノイズ関数でFill/NoFillをスイッチ
Split circumference, switch Fill / NoFill with Perlin Noise.
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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); ofSetLineWidth(1.5); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5); int deg_span = 15; int radius_span = 15; for (int radius = 150; radius <= 330; radius += radius_span) { for (int deg = 0; deg < 360; deg += deg_span) { glm::vec2 noise_point = glm::vec2( radius_span * cos((deg + deg_span * 0.5) * DEG_TO_RAD), radius_span * sin((deg + deg_span * 0.5) * DEG_TO_RAD)); vector<glm::vec2> vertices; for (int tmp_deg = deg; tmp_deg <= deg + deg_span; tmp_deg++) { vertices.push_back(glm::vec2(radius * cos(tmp_deg * DEG_TO_RAD), radius * sin(tmp_deg * DEG_TO_RAD))); } for (int tmp_deg = deg + deg_span; tmp_deg >= deg; tmp_deg--) { vertices.push_back(glm::vec2((radius - radius_span) * cos(tmp_deg * DEG_TO_RAD), (radius - radius_span) * sin(tmp_deg * DEG_TO_RAD))); } float noise_value = ofNoise(radius + noise_point.x * 0.01 + ofGetFrameNum() * 0.01, radius + noise_point.y * 0.01 + ofGetFrameNum() * 0.01); noise_value < 0.5 ? ofFill() : ofNoFill(); ofBeginShape(); ofVertices(vertices); ofEndShape(); } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |