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輪っかを生成ランダムウォーク。
Random Walker generating rings.
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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; vector<glm::vec3> ripple_location_list; vector<float> ripple_radius_list; vector<float> ripple_param_list; vector<float> ripple_theta_list; vector<float> ripple_life_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(239); ofSetLineWidth(2); ofEnableDepthTest(); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); for (int k = 0; k < 8; k++) { auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000)); vector<glm::vec3> log_list; for (int i = 0; i < 30; i++) { auto location = glm::vec3( ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + i) * 0.005), 0, 1, -350, 350), ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + i) * 0.005), 0, 1, -350, 350), 0); log_list.push_back(location); } if (ofGetFrameNum() % 10 == 0) { auto direction = log_list[log_list.size() - 1] - log_list[log_list.size() - 2]; auto theta = atan2(direction.y, direction.x); auto param = glm::length(direction) * 0.5; this->ripple_location_list.push_back(log_list[log_list.size() - 1]); this->ripple_radius_list.push_back(0); this->ripple_param_list.push_back(param); this->ripple_theta_list.push_back(theta); this->ripple_life_list.push_back(255); } ofNoFill(); for (int i = log_list.size() - 1; i > 0; i--) { ofSetColor(ofMap(i, 0, log_list.size(), 239, 39)); ofDrawLine(log_list[i], log_list[i - 1]); } ofFill(); ofSetColor(39); ofDrawSphere(log_list[log_list.size() - 1], 2); } for (int i = this->ripple_location_list.size() - 1; i >= 0; i--) { this->ripple_radius_list[i] += this->ripple_param_list[i]; this->ripple_life_list[i] -= 10; if (this->ripple_life_list[i] < 0) { this->ripple_location_list.erase(this->ripple_location_list.begin() + i); this->ripple_radius_list.erase(this->ripple_radius_list.begin() + i); this->ripple_param_list.erase(this->ripple_param_list.begin() + i); this->ripple_theta_list.erase(this->ripple_theta_list.begin() + i); this->ripple_life_list.erase(this->ripple_life_list.begin() + i); continue; } ofNoFill(); ofSetColor(ofMap(this->ripple_life_list[i], 0, 255, 239, 39)); ofBeginShape(); for (int deg = 0; deg < 360; deg += 3) { auto vertex = glm::vec3(this->ripple_radius_list[i] * cos(deg * DEG_TO_RAD), this->ripple_radius_list[i] * sin(deg * DEG_TO_RAD), 0); auto rotation_x = glm::rotate(glm::mat4(), (float)(PI * 0.5), glm::vec3(1, 0, 0)); auto rotation_y = glm::rotate(glm::mat4(), (float)(this->ripple_theta_list[i] + PI * 0.5), glm::vec3(0, 1, 0)); vertex = this->ripple_location_list[i] + glm::vec4(vertex, 0) * rotation_y * rotation_x; ofVertex(vertex); } ofEndShape(true); } this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |