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円柱状の空間を目に見えないParticleが一定速度で移動しています。Particle同士の距離が一定以下になったとき、Particle自身とそれぞれのParticleを結ぶ線が浮き出ます。また、距離と透過度は連動しており、近づくほどハッキリと、遠ざかると薄っすらとなっていきます。
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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) {}; ofEasyCam cam; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofBackground(39); ofSetWindowTitle("Insta"); ofEnableDepthTest(); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateX(270); // Make Particle Location vector<ofPoint> points; for (int i = 0; i < 512; i++) { int radius = ofRandom(100, 300); float z_speed = ofRandom(1, 3); float deg_speed = ofRandom(1, 2); float deg = ofRandom(360) + ofGetFrameNum() * deg_speed; float z = ofRandom(-ofGetWidth() / 2, ofGetWidth() / 2); z += (int)(z + ofGetFrameNum() * z_speed) % ofGetWidth() - ofGetWidth() / 2; ofPoint point(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), z); points.push_back(point); } // Draw Particle for (int i = 0; i < points.size(); i++) { for (int j = i + 1; j < points.size(); j++) { float distance = points[i].distance(points[j]); if (distance < 40) { ofSetColor(239, ofMap(distance, 0, 40, 255, 128)); ofDrawLine(points[i], points[j]); ofDrawSphere(points[i], 3); ofDrawSphere(points[j], 3); } else if(distance < 50){ ofSetColor(239, ofMap(distance, 40, 50, 128, 0)); ofDrawLine(points[i], points[j]); ofDrawSphere(points[i], 3); ofDrawSphere(points[j], 3); } } } this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |