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本日の日替わりメニュー ヤモリのイラストにのせて
Random walk on Gecko.
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#pragma once #include "ofMain.h" #include "Particle.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) {}; ofFbo fbo; vector<Particle> particles; vector<ofPoint> locations; vector<vector<int>> next_indexes; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(39); ofSetColor(239); ofImage image = ofImage("images/gecko.png"); int span = 10; this->fbo.allocate(ofGetWidth(), ofGetHeight()); this->fbo.begin(); ofClear(0); image.draw(5, 5); this->fbo.end(); ofPixels pixels; this->fbo.readToPixels(pixels); for (int x = 0; x < this->fbo.getWidth(); x += span) { for (int y = 0; y < this->fbo.getHeight(); y += span) { if (pixels.getColor(x, y) != ofColor(0, 0)) { this->locations.push_back(ofPoint(x, y)); } } } for (int i = 0; i < this->locations.size(); i++) { vector<int> next_index = vector<int>(); for (int j = 0; j < this->locations.size(); j++) { if (i == j ){ continue; } float distance = this->locations[i].distance(this->locations[j]); if (distance <= span) { next_index.push_back(j); } } this->next_indexes.push_back(next_index); } for (int i = 0; i < 800; i++) { this->particles.push_back(Particle(this->locations, this->next_indexes)); } } //-------------------------------------------------------------- void ofApp::update() { for (Particle& particle : particles) { particle.Upate(); } } //-------------------------------------------------------------- void ofApp::draw() { for (Particle& particle : particles) { particle.Draw(); } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |
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#pragma once #include "ofMain.h" class Particle { public: Particle(vector<ofPoint> locations, vector<vector<int>> next_indexes); ~Particle(); void Upate(); void Draw(); private: ofPoint location; vector<ofPoint> locations; vector<vector<int>> next_indexes; int locations_index; int next_index; std::deque<ofPoint> logs; }; |
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#include "Particle.h" //-------------------------------------------------------------- Particle::Particle(vector<ofPoint> locations, vector<vector<int>> next_indexes) { this->locations = locations; this->next_indexes = next_indexes; while (true) { this->locations_index = (int)ofRandom(this->locations.size()); if (this->next_indexes[this->locations_index].size() > 0) { this->next_index = this->next_indexes[this->locations_index][(int)ofRandom(this->next_indexes[this->locations_index].size())]; break; } } } //-------------------------------------------------------------- Particle::~Particle() { } //-------------------------------------------------------------- void Particle::Upate() { int frame_span = 20; if (ofGetFrameNum() % frame_span == 0) { this->locations_index = this->next_index; this->next_index = this->next_indexes[this->locations_index][(int)ofRandom(this->next_indexes[this->locations_index].size())]; } ofPoint distance = this->locations[this->next_index] - this->locations[this->locations_index]; this->location = this->locations[this->locations_index] + distance / frame_span * (ofGetFrameNum() % frame_span); this->logs.push_front(this->location); while (this->logs.size() > 45) { this->logs.pop_back(); } } //-------------------------------------------------------------- void Particle::Draw() { ofFill(); ofDrawSphere(this->location, 2); ofNoFill(); ofBeginShape(); for (ofPoint& log : this->logs) { ofVertex(log); } ofEndShape(); } |