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日の丸。
Japanise flag.
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#pragma once #include "ofMain.h" #include "ofFbo.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) {}; ofImage photo; ofFbo fbo; vector<shared_ptr<Particle>> particles; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofBackground(0); ofSetWindowTitle("Insta"); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); ofSetLineWidth(2); this->photo.loadImage("photo.png"); for (int i = 0; i < 512 + 256; i++) { this->particles.push_back(shared_ptr<Particle>(new Particle())); } this->fbo.allocate(ofGetWidth(), ofGetHeight()); } //-------------------------------------------------------------- void ofApp::update() { ofPixels pixels = this->photo.getPixelsRef(); ofColor pixel_color; for (int i = 0; i < this->particles.size(); i++) { this->particles[i]->update(); } this->fbo.begin(); if (ofGetMousePressed()) { ofClear(0); } for (int i = 0; i < this->particles.size(); i++) { vector<ofVec2f> near_point; pixel_color = pixels.getColor(this->particles[i]->get_location().x, this->particles[i]->get_location().y); if (pixel_color == ofColor(0, 0, 0, 0)) { pixel_color = ofColor(255); } ofSetColor(pixel_color, 128); for (int j = i + 1; j < this->particles.size(); j++) { if (this->particles[i]->get_location().distanceSquared(this->particles[j]->get_location()) < 1000) { near_point.push_back(this->particles[j]->get_location()); //ofDrawLine(this->particles[i]->get_location(), this->particles[j]->get_location()); } } if (near_point.size() > 2) { ofBeginShape(); for (int k = 0; k < near_point.size(); k++) { ofVertex(near_point[k].x, near_point[k].y); } ofEndShape(true); } } this->fbo.end(); } //-------------------------------------------------------------- void ofApp::draw() { this->fbo.draw(0, 0); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |
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#pragma once #include "ofMain.h" class Particle { public: Particle(); ~Particle() {}; void apply_force(ofVec2f force); void update(); void draw(); ofVec2f get_location(); private: ofVec2f location; ofVec2f velocity; ofVec2f acceleration; }; |
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#include "Particle.h" Particle::Particle() { this->location = ofVec2f(ofRandom(ofGetWidth()), ofRandom(ofGetHeight())); this->velocity = ofVec2f(ofRandom(-3, 3), ofRandom(-3, 3)); this->acceleration = ofVec2f(); } void Particle::apply_force(ofVec2f force) { this->acceleration += force; } void Particle::update() { this->acceleration += this->velocity; this->location += this->acceleration; this->acceleration *= 0; if (this->location.x < 0) { this->location.x = 0; this->velocity.x *= -1; } else if (this->location.x > ofGetWidth()) { this->location.x = ofGetWidth(); this->velocity.x *= -1; } if (this->location.y < 0) { this->location.y = 0; this->velocity.y *= -1; } else if (this->location.y > ofGetHeight()) { this->location.y = ofGetHeight(); this->velocity.y *= -1; } } void Particle::draw() { } ofVec2f Particle::get_location() { return this->location; } |