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Connections on the torus.
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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) {}; glm::vec3 make_point(float R, float r, float u, float v); ofEasyCam cam; vector<ofMesh> line_list; ofMesh near_line; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(239); ofSetColor(39); ofSetLineWidth(2); ofEnableDepthTest(); this->near_line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); this->line_list.clear(); this->near_line.clear(); for (int i = 0; i < 7; i++) { ofMesh line; line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); auto noise_seed = ofRandom(1000); for (int v = 0; v < 360; v += 2) { auto p = glm::vec2(300 * cos(v * DEG_TO_RAD), 300 * sin(v * DEG_TO_RAD)); auto u = ofMap(ofNoise(noise_seed, p.x * 0.002, p.y * 0.002, ofGetFrameNum() * 0.0035), 0, 1, -360, 360); line.addVertex(this->make_point(300, 60, u, v)); if (v > 0) { line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 2); } } line.addIndex(0); line.addIndex(line.getNumVertices() - 1); this->line_list.push_back(line); } for (int i = 0; i < this->line_list.size(); i++) { for (int k = i + 1; k < this->line_list.size(); k++) { for (int m = 0; m < this->line_list[i].getNumVertices(); m++) { for (int p = 0; p < this->line_list[k].getNumVertices(); p++) { if (glm::distance(this->line_list[i].getVertex(m), this->line_list[k].getVertex(p)) < 30) { this->near_line.addVertex(this->line_list[i].getVertex(m)); this->near_line.addVertex(this->line_list[k].getVertex(p)); this->near_line.addIndex(this->near_line.getNumVertices() - 1); this->near_line.addIndex(this->near_line.getNumVertices() - 2); } } } } } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); for (auto& line : this->line_list) { line.draw(); } this->near_line.draw(); for (auto& vertex : this->near_line.getVertices()) { ofDrawSphere(vertex, 3.5); } this->cam.end(); } //-------------------------------------------------------------- glm::vec3 ofApp::make_point(float R, float r, float u, float v) { // 数学デッサン教室 描いて楽しむ数学たち P.31 u *= DEG_TO_RAD; v *= DEG_TO_RAD; auto x = (R + r * cos(u)) * cos(v); auto y = (R + r * cos(u)) * sin(v); auto z = r * sin(u); return glm::vec3(x, y, z); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |