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トーラスを重ねてトンネルに。
Overlap the torus to make a tunnel.
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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; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(255); ofSetColor(255); ofSetLineWidth(1.5); ofEnableDepthTest(); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateX(0); int v_span = 1; int u_span = 60; ofMesh face, line; line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); for (int z = -1200; z <= 0; z += 100) { auto R = ofMap(z, -1200, 0, 125, 200); for (int v = 0; v <= 360; v += v_span) { int u_start = ofMap(ofNoise(200 * cos(v * DEG_TO_RAD) * 0.0025, 200 * sin(v * DEG_TO_RAD) * 0.0025, z * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -360, 360); int next_u = ofMap(ofNoise(200 * cos((v + v_span) * DEG_TO_RAD) * 0.0025, 200 * sin((v + v_span) * DEG_TO_RAD) * 0.0025, z * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -360, 360); for (int u = u_start; u < u_start + 360; u += u_span) { face.addVertex(this->make_point(R, 50, u, v) + glm::vec3(0, 0, z)); face.addVertex(this->make_point(R, 50, u + u_span, v) + glm::vec3(0, 0, z)); face.addVertex(this->make_point(R, 50, next_u + u_span, v + v_span) + glm::vec3(0, 0, z)); face.addVertex(this->make_point(R, 50, next_u, v + v_span) + glm::vec3(0, 0, z)); line.addVertex(this->make_point(R, 50, u, v) + glm::vec3(0, 0, z)); line.addVertex(this->make_point(R, 50, u + u_span, v) + glm::vec3(0, 0, z)); line.addVertex(this->make_point(R, 50, next_u + u_span, v + v_span) + glm::vec3(0, 0, z)); line.addVertex(this->make_point(R, 50, next_u, v + v_span) + glm::vec3(0, 0, z)); ofColor color = ofColor(255); if ((u - u_start) % (u_span * 2) || true) { for (int i = 1; i <= 4; i++) { //color.setHsb(ofMap(ofNoise(face.getVertex(face.getNumVertices() - i) * 0.003), 0, 1, 128, 255), 200, 255); color.setHsb(ofMap(ofNoise(200 * cos(v * DEG_TO_RAD) * 0.0025, 200 * sin(v * DEG_TO_RAD) * 0.0025, z * 0.005 + ofGetFrameNum() * 0.005), 0, 1, 128, 255), 200, 255); face.addColor(color); } } else { face.addColor(color); face.addColor(color); face.addColor(color); face.addColor(color); } face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 4); line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 4); line.addIndex(line.getNumVertices() - 2); line.addIndex(line.getNumVertices() - 3); next_u += u_span; } } } face.drawFaces(); line.drawWireframe(); 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()); } |