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円の上の流れ。
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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) {}; vector<glm::vec2> location_list; vector<int> life_list; float noise_value; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openFrameworks"); ofBackground(239); } //-------------------------------------------------------------- void ofApp::update() { if (ofGetFrameNum() % 75 < 15) { this->noise_value = ofRandom(1000); } for (int i = 0; i < 300; i++) { this->location_list.push_back(glm::vec2(ofRandom(-360, 360), ofRandom(-360, 360))); this->life_list.push_back(0); } for (int i = this->location_list.size() - 1; i >= 0; i--) { if (this->life_list[i] > 100) { this->location_list.erase(this->location_list.begin() + i); this->life_list.erase(this->life_list.begin() + i); } } for (int i = 0; i < this->location_list.size(); i++) { auto deg = ofMap(ofNoise(this->location_list[i].x * 0.002, this->location_list[i].y * 0.002, this->noise_value), 0, 1, -360, 360); auto next = this->location_list[i] + glm::vec2(5 * cos(deg * DEG_TO_RAD), 5 * sin(deg * DEG_TO_RAD)); next = glm::length(next) > 280 ? glm::normalize(next) * 280 : next; this->location_list[i] = next; this->life_list[i] += 1; } } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5); ofSetColor(0); for (int i = 0; i < this->location_list.size(); i++) { auto size = this->life_list[i] < 30 ? ofMap(this->life_list[i], 0, 30, 0, 4) : 4; ofDrawCircle(this->location_list[i], size); } ofSetColor(255); for (int i = 0; i < this->location_list.size(); i++) { auto size = this->life_list[i] < 30 ? ofMap(this->life_list[i], 0, 30, 0, 4) : 4; ofDrawCircle(this->location_list[i], size * 0.4); } /* // ffmpeg -i img_%04d.jpg aaa.mp4 int start = 750; if (ofGetFrameNum() > start) { std::ostringstream os; os << std::setw(4) << std::setfill('0') << ofGetFrameNum() - start; ofImage image; image.grabScreen(0, 0, ofGetWidth(), ofGetHeight()); image.saveImage("image/cap/img_" + os.str() + ".jpg"); if (ofGetFrameNum() - start >= 25 * 20) { std::exit(1); } } */ } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |
[ Link ]
https://github.com/junkiyoshi/DoodleDeProgramming/tree/1a0f35061753fee0ffc947e1be1b503b1779e049