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ノイズで半径が変動する円周上に点を取って、近いもの同士で線を引く
Point on the radius changing circumference by noise. And, drawing line each other with near point.
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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(0); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5); ofColor color(255); int radius = 320; vector<glm::vec2> locations; for (int i = 0; i < 5; i++) { float noise_seed = ofRandom(1000); for (int deg = 0; deg < 360; deg += 5) { auto noise_location = glm::vec2(cos(deg * DEG_TO_RAD), sin(deg * DEG_TO_RAD)); auto noise_radius = ofMap(ofNoise(noise_seed, noise_location.x, noise_location.y, ofGetFrameNum() * 0.005), 0, 1, radius * 0.5, radius); auto location = glm::vec2(noise_radius * cos(deg * DEG_TO_RAD), noise_radius * sin(deg * DEG_TO_RAD)); locations.push_back(location); } } for (auto location : locations) { bool draw_circle = false; 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, 32); ofSetColor(color, alpha); ofDrawLine(location, other); if (circle_alpha < alpha) { circle_alpha = alpha; } draw_circle = true; } } if (draw_circle) { ofSetColor(color, circle_alpha); ofDrawCircle(location, 3); } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |