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角度ごとに太さが変化する円
Circle thickness changes with each angle.
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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); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { int radius_base = 45; int radius_span = 4; int deg_span = 24; int span = 144; for (int x = span * 0.5; x < ofGetWidth(); x += span) { for (int y = span * 0.5; y < ofGetHeight(); y += span) { for (int deg = 0; deg < 360; deg += deg_span) { glm::vec2 noise_point = glm::vec2( x + radius_span * cos((deg + deg_span * 0.5) * DEG_TO_RAD), y + radius_span * sin((deg + deg_span * 0.5) * DEG_TO_RAD)); int noise_value = ofMap(ofNoise(noise_point.x * 0.01 + ofGetFrameNum() * 0.015, noise_point.y * 0.01 + ofGetFrameNum() * 0.015), 0, 1, -5, 5); int radius_start = noise_value > 0 ? radius_base : radius_base + noise_value * radius_span; int radius_end = noise_value > 0 ? radius_base + noise_value * radius_span : radius_base; for (int radius = radius_start; radius <= radius_end; radius += radius_span) { vector<glm::vec2> vertices; for (int tmp_deg = deg; tmp_deg <= deg + deg_span; tmp_deg++) { vertices.push_back(glm::vec2(x + (radius + radius_span * 0.5) * cos(tmp_deg * DEG_TO_RAD), y + (radius + radius_span * 0.5) * sin(tmp_deg * DEG_TO_RAD))); } for (int tmp_deg = deg + deg_span; tmp_deg >= deg; tmp_deg--) { vertices.push_back(glm::vec2(x + (radius - radius_span * 0.5) * cos(tmp_deg * DEG_TO_RAD), y + (radius - radius_span * 0.5) * sin(tmp_deg * DEG_TO_RAD))); } ofBeginShape(); ofVertices(vertices); ofEndShape(true); } } } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |