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ノイズの波に点を取って、近いもの同士で線を引く。円のサイズは近くの点の数と連動
Point on the noise wave. And, drawing line each other with near point. Circle size is number of near points.
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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 mouseEntered(int x, int y) {}; void mouseExited(int x, int y) {}; 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); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { ofColor color(39); int radius = 320; vector<glm::vec2> locations; for (int i = 1; i <= 5; i++) { float noise_seed = ofRandom(1000); for (int x = 0; x <= ofGetWidth(); x += 10) { float y = ofMap(ofNoise(noise_seed, x * 0.0015 * i, ofGetFrameNum() * 0.003), 0, 1, ofGetHeight() * 0.1, ofGetHeight() * 0.9); locations.push_back(glm::vec2(x, y)); } } for (auto location : locations) { bool draw_circle = false; float draw_radius = 1; float circle_alpha = 0; for (auto other : locations) { if (location == other) { continue; } auto distance = glm::distance(location, other); if (distance < 25) { float alpha = ofMap(distance, 0, 25, 255, 128); ofSetColor(color, alpha); ofDrawLine(location, other); if (circle_alpha < alpha) { circle_alpha = alpha; } draw_circle = true; draw_radius += 1.5; } } if (draw_circle) { ofSetColor(color, circle_alpha); ofDrawCircle(location, draw_radius); } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |