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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> noise_seed_list; vector<glm::vec2> location_list; vector<glm::vec2> velocity_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(239); ofSetColor(39); for (int i = 0; i < 5; i++) { this->noise_seed_list.push_back(glm::vec2(ofRandom(1000), ofRandom(1000))); } ofTrueTypeFont font; font.loadFont("fonts/Kazesawa-Bold.ttf", 500, true, true, true); string word = "A"; auto word_size = glm::vec2(font.stringWidth(word), font.stringHeight(word)); vector<ofPath> word_path = font.getStringAsPoints(word, true, false); for (int word_index = 0; word_index < word.size(); word_index++) { vector<ofPolyline> outline = word_path[word_index].getOutline(); for (int outline_index = 0; outline_index < outline.size(); outline_index++) { outline[outline_index] = outline[outline_index].getResampledBySpacing(10); auto vertices = outline[outline_index].getVertices(); for (int vertices_index = 0; vertices_index < vertices.size(); vertices_index++) { glm::vec2 vertex = glm::vec2(vertices[vertices_index]); vertex += glm::vec2(ofGetWidth() * 0.5 - word_size.x * 0.5, ofGetHeight() * 0.5 + word_size.y * 0.5); this->location_list.push_back(vertex); this->velocity_list.push_back(glm::vec2()); } } } } //-------------------------------------------------------------- void ofApp::update() { for (auto& noise_seed : this->noise_seed_list) { auto location = glm::vec2(ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.003), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.003), 0, 1, 0, ofGetHeight())); auto next = glm::vec2(ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + 1) * 0.003), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + 1) * 0.003), 0, 1, 0, ofGetHeight())); auto distance = location - next; distance *= 2; auto future = location + distance * 30; auto random_deg = ofRandom(360); future += glm::vec2(30 * cos(random_deg * DEG_TO_RAD), 30 * sin(random_deg * DEG_TO_RAD)); auto future_distance = future - location; this->location_list.push_back(location); this->velocity_list.push_back(glm::normalize(future_distance) * glm::length(distance) * 0.5); } for (int i = this->location_list.size() - 1; i > -1; i--) { this->location_list[i] += this->velocity_list[i]; this->velocity_list[i] *= 1.01; if (glm::distance(glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * 0.5), this->location_list[i]) > 720) { this->location_list.erase(this->location_list.begin() + i); this->velocity_list.erase(this->velocity_list.begin() + i); } } } //-------------------------------------------------------------- void ofApp::draw() { for (int i = 0; i < this->location_list.size(); i++) { for (int k = 0; k < this->location_list.size(); k++) { if (i == k) continue; if (this->velocity_list[i] == glm::vec2() && this->velocity_list[k] == glm::vec2()) { continue; } if (glm::distance(this->location_list[i], this->location_list[k]) < 50) { ofDrawLine(this->location_list[i], this->location_list[k]); } } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |