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Double helix.
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#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 mouseEntered(int x, int y) {}; void mouseExited(int x, int y) {}; void windowResized(int w, int h) {}; void dragEvent(ofDragInfo dragInfo) {}; void gotMessage(ofMessage msg) {}; ofEasyCam cam; ofMesh mesh; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetColor(39); ofSetLineWidth(2); ofEnableDepthTest(); this->mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); } //-------------------------------------------------------------- void ofApp::update() { this->mesh.clear(); int span = 2; for (int y = -200; y <= 200; y += 200) { for (int x = -150; x <= 150; x += 5) { vector<glm::vec3> vertices; vertices.push_back(glm::vec3(x, -50, 0)); vertices.push_back(glm::vec3(x, 50, 0)); auto rotation_x = glm::rotate(glm::mat4(), (ofGetFrameNum() * span + x * span + 300) * (float)DEG_TO_RAD, glm::vec3(1, 0, 0)); for (auto& vertex : vertices) { vertex = glm::vec3(x, y, 0) + glm::vec4(vertex, 0) * rotation_x; } this->mesh.addVertices(vertices); this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 2); if (x > -150) { this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 3); this->mesh.addIndex(this->mesh.getNumVertices() - 2); this->mesh.addIndex(this->mesh.getNumVertices() - 4); } } } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); this->mesh.drawWireframe(); for (auto& vertex : this->mesh.getVertices()) { ofDrawSphere(vertex, 3); } this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |