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ノイズ波。
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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 mouseEntered(int x, int y) {}; void mouseExited(int x, int y) {}; void windowResized(int w, int h) {}; void dragEvent(ofDragInfo dragInfo) {}; void gotMessage(ofMessage msg) {}; vector<glm::vec2> location_list; vector<float> size_list; vector<float> speed_list; vector<float> max_size_list; vector<float> index_list; vector<float> deg_list; vector<ofColor> color_list; vector<bool> flag_list; ofTrueTypeFont font; string word; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(0); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); this->font.loadFont("fonts/Kazesawa-Bold.ttf", 100, true, true, true); this->word = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; } //-------------------------------------------------------------- void ofApp::update() { for (int i = this->location_list.size() - 1; i >= 0; i--) { this->size_list[i] += this->speed_list[i]; if (this->size_list[i] > this->max_size_list[i]) { this->location_list.erase(this->location_list.begin() + i); this->size_list.erase(this->size_list.begin() + i); this->speed_list.erase(this->speed_list.begin() + i); this->max_size_list.erase(this->max_size_list.begin() + i); this->index_list.erase(this->index_list.begin() + i); this->deg_list.erase(this->deg_list.begin() + i); this->color_list.erase(this->color_list.begin() + i); this->flag_list.erase(this->flag_list.begin() + i); } } ofColor color; for (int i = 0; i < 10; i++) { auto random_x = ofRandom(ofGetWindowWidth() * -0.5, ofGetWindowWidth() * 0.5); auto y = ofMap(ofNoise(random_x * 0.0025 + ofGetFrameNum() * 0.015), 0, 1, ofGetWindowHeight() * -0.5, ofGetWindowHeight() * 0.5); auto location = glm::vec2(random_x, y + ofRandom(-20, 20)); this->location_list.push_back(location); this->size_list.push_back(1); this->speed_list.push_back(ofRandom(0.4, 3)); this->max_size_list.push_back(ofRandom(20, 40)); this->index_list.push_back(ofRandom(this->word.size())); this->deg_list.push_back(ofRandom(360)); color.setHsb(ofRandom(255), 255, 255); this->color_list.push_back(color); this->flag_list.push_back(ofRandom(1) < 0.5); } } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5); ofNoFill(); for (int i = 0; i < this->location_list.size(); i++) { this->flag_list[i] ? ofFill() : ofNoFill(); ofPath chara_path = this->font.getCharacterAsPoints(this->word[this->index_list[i]], true, false); vector<ofPolyline> outline = chara_path.getOutline(); auto rotation = glm::rotate(glm::mat4(), this->deg_list[i] * (float)DEG_TO_RAD, glm::vec3(0, 0, 1)); auto alpha = this->size_list[i] > this->max_size_list[i] * 0.6 ? ofMap(this->size_list[i], this->max_size_list[i] * 0.6, this->max_size_list[i], 255, 0) : 255; ofSetColor(this->color_list[i], alpha); ofBeginShape(); for (int outline_index = 0; outline_index < outline.size(); outline_index++) { ofNextContour(true); auto vertices = outline[outline_index].getVertices(); for (auto& vertex : vertices) { glm::vec2 location = vertex / 100 * size_list[i]; location -= glm::vec2(size_list[i] * 0.5, -size_list[i] * 0.5); location = glm::vec4(location, 0, 0) * rotation; ofVertex(location + location_list[i]); } } ofEndShape(true); ofDrawCircle(location_list[i], 2); } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |