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拡散。
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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<float> seed_list; vector<glm::vec2> velocity_list; vector<int> index_list; float font_size; ofTrueTypeFont font; string word; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openframeworks"); ofBackground(39); ofSetColor(255); this->word = "JunKiyoshi.com"; this->font_size = 30; this->font.loadFont("fonts/Kazesawa-Bold.ttf", this->font_size, true, true, true); } //-------------------------------------------------------------- void ofApp::update() { for (int i = this->log_list.size() - 1; i >= 0; i--) { if (this->log_list[i].back().y < -this->font_size || this->log_list[i].back().y > ofGetWindowHeight() + this->font_size) { this->log_list.erase(this->log_list.begin() + i); this->seed_list.erase(this->seed_list.begin() + i); this->velocity_list.erase(this->velocity_list.begin() + i); this->index_list.erase(this->index_list.begin() + i); continue; } auto feature = this->velocity_list[i] * 35; auto deg = ofMap(ofNoise(this->seed_list[i], ofGetFrameNum() * 0.005), 0, 1, 0, 360); feature += glm::vec2(30 * cos(deg * DEG_TO_RAD), 30 * sin(deg * DEG_TO_RAD)); auto next = this->log_list[i].back() + glm::normalize(feature) * 15; this->log_list[i].push_back(next); while (this->log_list[i].size() > 20) { this->log_list[i].erase(this->log_list[i].begin()); } } if(ofGetFrameNum() % 1 == 0) { auto y = ofMap(sin(ofGetFrameNum() * 0.05), -1, 1, this->font_size, ofGetWindowHeight() - this->font_size); auto next_y = ofMap(sin((ofGetFrameNum() + 1) * 0.05), -1, 1, this->font_size, ofGetWindowHeight() - this->font_size); auto location = glm::vec2(360, y); auto next = glm::vec2(360, next_y); vector<glm::vec2> log; log.push_back(location); this->log_list.push_back(log); this->seed_list.push_back(ofMap(ofNoise(location * 0.001), 0, 1, 0, 1000)); this->velocity_list.push_back(glm::normalize(location - next) * 2); this->index_list.push_back(int(ofGetFrameNum() * 0.5) % this->word.size()); } } //-------------------------------------------------------------- void ofApp::draw() { int sample_count = 180; ofBeginShape(); for (int i = 0; i < this->log_list.size(); i++) { char c = this->word[this->index_list[i]]; ofPath path = this->font.getCharacterAsPoints(c, true, false); vector<ofPolyline> outline = path.getOutline(); for (int outline_index = 0; outline_index < outline.size(); outline_index++) { outline_index != 0 ? ofNextContour(true) : ofNextContour(false); auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices(); for (auto& vertex : vertices) { ofVertex(this->log_list[i].back() + vertex); } } } ofEndShape(true); /* 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()); } |