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円をねじねじ。
Circle are rotationg.
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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, frame_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(239); ofSetLineWidth(2); ofEnableDepthTest(); } //-------------------------------------------------------------- void ofApp::update() { this->mesh_list.clear(); this->frame_list.clear(); for (int x = 120; x < ofGetWidth(); x += 240) { for (int y = 120; y < ofGetHeight(); y += 240) { ofMesh mesh, frame; frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); for (int radius = 30; radius <= 100; radius += 10) { for (int deg = 0; deg < 360; deg += 1) { auto location = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0); auto param = int(ofGetFrameNum() + location.x + x + y) % 450; auto angle = 0.f; if (param > 225) { angle = ofMap(param, 225, 450, 0, PI * 6); } auto rotation = glm::rotate(glm::mat4(), angle, glm::vec3(1, 0, 0)); location = glm::vec3(x, y, 0) + glm::vec4(location, 0) * rotation; if (radius == 30 || radius == 100) { frame.addVertex(location); } mesh.addVertex(location); } } for (int base = 0; base < mesh.getNumVertices() - 360; base += 360) { for (int i = base; i < base + 360; i += 1) { mesh.addIndex(i); mesh.addIndex(i + 360); mesh.addIndex((i + 1) % 360 + base + 360); mesh.addIndex(i); mesh.addIndex((i + 1) % 360 + base); mesh.addIndex((i + 1) % 360 + base + 360); } } for (int i = 0; i < 360; i++) { frame.addIndex(i); frame.addIndex((i + 1) % 360); frame.addIndex(i + 360); frame.addIndex((i + 1) % 360 + 360); } this->mesh_list.push_back(mesh); this->frame_list.push_back(frame); } } } //-------------------------------------------------------------- void ofApp::draw() { ofSetColor(39); for(auto& mesh : this->mesh_list){ mesh.draw(); } ofSetColor(239); for (auto& frame : this->frame_list) { frame.drawWireframe(); } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |