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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<vector<glm::vec2>> log_list; vector<ofColor> color_list; float noise_value; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openFrameworks"); ofBackground(39); ofNoFill(); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); } //-------------------------------------------------------------- void ofApp::update() { if (ofGetFrameNum() % 100 < 50) { this->noise_value += ofMap(ofGetFrameNum() % 100, 0, 50, 0.04, 0); } ofColor color; for (int i = 0; i < 20; i++) { vector<glm::vec2> log; log.push_back(glm::vec2(ofRandom(-280, 280), 0)); this->log_list.push_back(log); int hue = (int)((ofMap(log.back().x, -280, 280, 0, 255)) + ofGetFrameNum() * 5) % 255; color.setHsb(hue, 255, 255); this->color_list.push_back(color); } for (int i = this->log_list.size() - 1; i >= 0; i--) { if (abs(this->log_list[i].back().x) > 460 || abs(this->log_list[i].back().y) > 460) { this->log_list.erase(this->log_list.begin() + i); this->color_list.erase(this->color_list.begin() + i); } if (this->log_list[i].size() > 75) { this->log_list.erase(this->log_list.begin() + i); this->color_list.erase(this->color_list.begin() + i); } } for (int i = 0; i < this->log_list.size(); i++) { auto deg = ofMap(ofNoise(this->log_list[i].back().x * 0.008, this->log_list[i].back().y * 0.008, this->noise_value), 0, 1, -360, 360); auto next = this->log_list[i].back() + glm::vec2(6 * cos(deg * DEG_TO_RAD), 6 * sin(deg * DEG_TO_RAD)); this->log_list[i].push_back(next); } } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5); for (int i = 0; i < this->log_list.size(); i++) { ofSetColor(this->color_list[i], ofMap(this->log_list[i].size(), 0, 75, 255, 0)); ofBeginShape(); ofVertices(this->log_list[i]); ofEndShape(); } /* int start = 200; if (ofGetFrameNum() > start) { ostringstream os; os << setw(4) << 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()); } |