[ Video ]
[ About ]
トーラス座標を計算する関数で遊ぶ。
Play with functions to calculate the torus coordinates.
[ Source ]
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 |
#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 face, line; }; |
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 |
#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(239); ofSetLineWidth(3); ofEnableDepthTest(); this->line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); this->face.clear(); this->line.clear(); auto R = 100.f; auto u = 0.f; auto u_step = 10.f; auto v_step = 5.f; ofColor color; for (int i = 0; i < 36; i++) { auto r = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.01), 0, 1, 10, 45); float angle_z = (i * 5) * DEG_TO_RAD; auto rotation_z = glm::rotate(glm::mat4(), angle_z, glm::vec3(0, 0, 1)); color.setHsb(ofMap(i, 0, 36, 0, 255), 230, 255); for (auto v = 0; v < 360; v += v_step) { vector<glm::vec3> vertices{ glm::vec4(this->make_point(R, r, u, v), 0) * rotation_z, glm::vec4(this->make_point(R, r, u + u_step, v + v_step), 0) * rotation_z, glm::vec4(this->make_point(R, r, u, v + v_step), 0) * rotation_z, glm::vec4(this->make_point(R, r, u - u_step, v), 0) * rotation_z }; this->face.addVertices(vertices); this->line.addVertices(vertices); for (int k = 0; k < vertices.size(); k++) { this->face.addColor(ofColor(color, 138)); this->line.addColor(color); } auto index = this->face.getVertices().size() - 1; // 末尾の番地 this->face.addIndex(index - 3); this->face.addIndex(index - 2); this->face.addIndex(index - 1); this->face.addIndex(index); this->face.addIndex(index - 3); this->face.addIndex(index - 1); this->line.addIndex(index - 3); this->line.addIndex(index - 2); this->line.addIndex(index); this->line.addIndex(index - 1); u += u_step; } } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); this->face.draw(); this->line.draw(); 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()); } |