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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) {}; float radius; ofTrueTypeFont font; vector<glm::vec2> base_location_list; vector<ofColor> color_list; vector<vector<glm::vec2>> log_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openFrameworks"); ofBackground(0); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); ofNoFill(); this->radius = 250; this->font.loadFont("fonts/Kazesawa-Bold.ttf", 230, true, true, true); string word = "B"; auto path_list = font.getStringAsPoints(word, true, false); ofColor color; for (auto path : path_list) { auto outline = path.getOutline(); for (int outline_index = 0; outline_index < outline.size(); outline_index++) { outline[outline_index] = outline[outline_index].getResampledByCount(250); auto vertices = outline[outline_index].getVertices(); for (int vertices_index = 0; vertices_index < vertices.size(); vertices_index++) { this->base_location_list.push_back(glm::vec2( ofGetWindowWidth() * 0.5 + vertices[vertices_index].x - this->font.stringWidth(word) * 0.5, ofGetWindowHeight() * 0.5 + vertices[vertices_index].y + this->font.stringHeight(word) * 0.5)); color.setHsb((int)ofMap(vertices_index, 0, vertices.size(), 0, 255 * 3) % 255, 255, 255); this->color_list.push_back(color); } } } } //-------------------------------------------------------------- void ofApp::update() { this->log_list.clear(); for (int i = 0; i < this->base_location_list.size(); i++) { vector<glm::vec2> log; log.push_back(this->base_location_list[i]); this->log_list.push_back(log); } int step = 1; for (int i = 0; i < this->log_list.size(); i++) { int k = 0; while (true) { auto base_deg = RAD_TO_DEG * atan2(this->log_list[i].front().y - ofGetHeight() * 0.5, this->log_list[i].front().x - ofGetWindowWidth() * 0.5); auto deg = ofMap(ofNoise(glm::vec3(this->log_list[i].back() * 0.02, ofGetFrameNum() * 0.008 + k * 0.001)), 0, 1, base_deg - 90, base_deg + 90); auto next = this->log_list[i].back() + glm::vec2(step * cos(deg * DEG_TO_RAD), step * sin(deg * DEG_TO_RAD)); if (glm::distance(glm::vec2(ofGetWindowWidth() * 0.5, ofGetWindowHeight() * 0.5), next) < this->radius) { this->log_list[i].push_back(next); } else { break; } k++; } } } //-------------------------------------------------------------- void ofApp::draw() { for (int i = 0; i < this->log_list.size(); i++) { ofSetColor(this->color_list[i]); ofBeginShape(); ofVertices(this->log_list[i]); ofEndShape(); } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |