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残像だ。
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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; float font_size; ofTrueTypeFont font; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openframeworks"); ofBackground(0); ofSetLineWidth(1.5); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); this->font_size = 80; this->font.loadFont("fonts/Kazesawa-Bold.ttf", this->font_size, true, true, true); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateX(180); string word = "01234567890123456789"; int sample_count = 180; vector<ofColor> color_list = { ofColor(255, 0, 0), ofColor(0, 255, 0), ofColor(0, 0, 255), }; for (int x = -200; x <= 200; x += 100) { for (int y = -200; y <= 200; y += 100) { auto noise_seed = ofRandom(1000); for (int i = 0; i < color_list.size() * 2; i++) { int word_index = ofMap(ofNoise(noise_seed, i * 0.01 + ofGetFrameNum() * 0.004), 0, 1, 0, word.size()); ofPath chara_path = this->font.getCharacterAsPoints(word[word_index], true, false); vector<ofPolyline> outline = chara_path.getOutline(); ofFill(); ofSetColor(ofColor(color_list[i % color_list.size()], 64)); ofBeginShape(); for (int outline_index = 0; outline_index < outline.size(); outline_index++) { if (outline_index != 0) { ofNextContour(true); } auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices(); for (auto& vertex : vertices) { auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 0); location = location + glm::vec3(x, y, 0); ofVertex(location); } } ofEndShape(); ofNoFill(); ofSetColor(ofColor(color_list[i % color_list.size()])); ofBeginShape(); for (int outline_index = 0; outline_index < outline.size(); outline_index++) { if (outline_index != 0) { ofNextContour(true); } auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices(); for (auto& vertex : vertices) { auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 0); location = location + glm::vec3(x, y, 0); ofVertex(location); } } ofEndShape(); } } } this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |