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ランダムウォークの進みを半径を超えるまで進める事で、円の点と点が線でつながる。
By advancing the random walk until it exceeds the radius, the points of the circle are connected by lines.
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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; vector<glm::vec2> base_location_list; vector<vector<glm::vec2>> log_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetLineWidth(1.5); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_MULTIPLY); ofNoFill(); this->radius = 150; for (float deg = 0; deg < 360; deg += 1.5) { auto location = glm::vec2(this->radius * cos(deg * DEG_TO_RAD), this->radius * sin(deg * DEG_TO_RAD)); this->base_location_list.push_back(location); } } //-------------------------------------------------------------- void ofApp::update() { this->log_list.clear(); for (int base_x = -165; base_x <= 165; base_x += 330) { for (int base_y = -165; base_y <= 165; base_y += 330) { for (int i = 0; i < this->base_location_list.size(); i++) { vector<glm::vec2> log; log.push_back(glm::vec2(this->base_location_list[i] + glm::vec2(base_x, base_y))); 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 deg = ofMap(ofNoise(glm::vec3(this->log_list[i].back() * 0.015, ofGetFrameNum() * 0.006 + k * 0.001)), 0, 1, -180, 180); 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(base_x, base_y), next) < this->radius) { this->log_list[i].push_back(next); } else { break; } k++; } } } } } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5); for (int i = 0; i < this->log_list.size(); i++) { if (this->log_list[i].size() > 1) { ofNoFill(); ofSetColor(190); ofBeginShape(); ofVertices(this->log_list[i]); ofEndShape(); ofFill(); ofDrawCircle(this->log_list[i].back(), 3); ofDrawCircle(this->log_list[i].front(), 3); } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |