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トーラスの頂点をぐーるぐる。
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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; ofMesh mesh; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(0); ofSetLineWidth(2); ofEnableDepthTest(); //this->mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); this->mesh.clear(); float phi_deg_step = 3; float theta_deg_step = 2; float R = 250; float r = 50; float threshold = 0.52; float phi_seed = ofRandom(1000); float theta_seed = ofRandom(2000, 3000); for (float phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) { for (float theta_deg = 0; theta_deg < 90; theta_deg += theta_deg_step) { auto vertex = this->make_point(R, r, theta_deg, phi_deg); auto phi_param = ofMap(ofNoise(glm::vec4(vertex * 0.003, phi_seed + ofGetFrameNum() * 0.004)), 0, 1, -180, 180); auto theta_param = ofMap(ofNoise(glm::vec4(vertex * 0.03, theta_seed + ofGetFrameNum() * 0.004)), 0, 1, -360, 360); this->mesh.addVertex(this->make_point(R, r, theta_deg + theta_param, phi_deg + phi_param)); } } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateZ(ofGetFrameNum() * 0.1); this->mesh.drawVertices(); 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()); } |