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球体上を移動する帯を見比べる。
Belt on sphere.
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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) {}; ofEasyCam cam; vector<ofMesh> mesh_list; vector<ofMesh> frame_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(239); ofEnableDepthTest(); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); this->mesh_list.clear(); this->frame_list.clear(); for (int x = -160; x <= 160; x += 320) { for (int i = 0; i < 20; i++) { ofMesh mesh, frame; frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); auto base = glm::vec3(x, 0, 0); auto param = glm::vec3(); switch ((int)ofRandom(3)) { case 0: param = glm::vec3(5, 0, 0); break; case 1: param = glm::vec3(0, 5, 0); break; case 2: param = glm::vec3(0, 0, 5); break; } auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000)); for (int k = 0; k < 50; k++) { auto location = glm::vec3( ofMap(ofNoise(noise_seed.x, (k + ofGetFrameNum()) * 0.01), 0, 1, -150, 150), ofMap(ofNoise(noise_seed.y, (k + ofGetFrameNum()) * 0.01), 0, 1, -150, 150), ofMap(ofNoise(noise_seed.z, (k + ofGetFrameNum()) * 0.01), 0, 1, -150, 150)); location = glm::normalize(location) * 150; mesh.addVertex(base + location + param); mesh.addVertex(base + location - param); frame.addVertex(base + location + param); frame.addVertex(base + location - param); if (k > 0) { mesh.addIndex(k * 2); mesh.addIndex(k * 2 - 1); mesh.addIndex(k * 2 - 2); mesh.addIndex(k * 2); mesh.addIndex(k * 2 + 1); mesh.addIndex(k * 2 - 1); frame.addIndex(k * 2); frame.addIndex(k * 2 - 2); frame.addIndex(k * 2 + 1); frame.addIndex(k * 2 - 1); } } frame.addIndex(0); frame.addIndex(1); frame.addIndex(frame.getNumVertices() - 1); frame.addIndex(frame.getNumVertices() - 2); this->mesh_list.push_back(mesh); this->frame_list.push_back(frame); } } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofSetColor(39); ofDrawSphere(glm::vec3(-160, 0, 0), 135); for (int i = 0; i < this->mesh_list.size(); i++) { ofSetColor(39); this->mesh_list[i].draw(); ofSetColor(239); this->frame_list[i].drawWireframe(); } this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |