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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; vector<glm::vec3> base_location_list; vector<ofColor> base_color_list; vector<vector<glm::vec3>> log_list; vector<ofColor> color_list; vector<float> life_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openFrameworks"); ofBackground(39); ofEnableDepthTest(); auto ico_sphere = ofIcoSpherePrimitive(250, 8); for (auto& vertex : ico_sphere.getMeshPtr()->getVertices()) { this->base_location_list.push_back(vertex); } } //-------------------------------------------------------------- void ofApp::update() { int radius = 5; ofColor color; while (this->log_list.size() < 15000) { int font_location_index = ofRandom(this->base_location_list.size()); vector<glm::vec3> log; log.push_back(this->base_location_list[font_location_index]); this->log_list.push_back(log); color.setHsb((int)ofRandom(200, 290) % 255, 255, 255); this->color_list.push_back(color); this->life_list.push_back(ofRandom(10, 60)); } for (int i = this->log_list.size() - 1; i >= 0; i--) { this->life_list[i] -= 1; if (this->life_list[i] < 0) { this->log_list.erase(this->log_list.begin() + i); this->color_list.erase(this->color_list.begin() + i); this->life_list.erase(this->life_list.begin() + i); continue; } auto deg = ofMap(ofNoise(glm::vec4(this->log_list[i].back() * 0.003, ofGetFrameNum() * 0.003)), 0, 1, -360, 360); auto theta = ofMap(ofNoise(glm::vec4(this->log_list[i].back() * 0.003, (ofGetFrameNum() + 10000) * 0.003)), 0, 1, -360, 360); auto location = this->log_list[i].back() + glm::vec3(radius * cos(deg * DEG_TO_RAD) * sin(theta * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD) * sin(theta * DEG_TO_RAD), radius * cos(theta * DEG_TO_RAD)); location = glm::normalize(location) * 250; this->log_list[i].push_back(location); while (this->log_list[i].size() > 300) { this->log_list[i].erase(this->log_list[i].begin()); } } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateY(ofGetFrameNum() * 1.44); ofNoFill(); for (int i = 0; i < this->log_list.size(); i++) { if (this->life_list[i] > 30) { ofSetLineWidth(1); ofSetColor(this->color_list[i]); } else { ofSetLineWidth(ofMap(this->life_list[i], 0, 30, 0, 1)); ofSetColor(ofColor(this->color_list[i], ofMap(this->life_list[i], 0, 30, 32, 255))); } ofBeginShape(); ofVertices(this->log_list[i]); ofEndShape(); } ofFill(); ofSetColor(39); ofDrawSphere(249); this->cam.end(); /* int start = 150; 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()); } |