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[ About ]
Three color arcs.
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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) {}; void setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height, int deg_start, int deg_end, ofColor face_color, ofColor frame_color); ofEasyCam cam; ofMesh face, frame; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofEnableDepthTest(); this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); this->face.clear(); this->frame.clear(); auto noise_seed = ofRandom(1000); int deg_span = 60; for (int radius = 50; radius <= 250; radius += 10) { int deg_start = ofMap(ofNoise(noise_seed + radius * 0.005 + ofGetFrameNum() * 0.01), 0, 1, -360, 360); bool flag = true; int i = 0; vector<ofColor> color_list = { ofColor(239, 139, 139), ofColor(139, 239, 139), ofColor(139, 139, 239) }; for (int deg = deg_start; deg < deg_start + 360; deg += deg_span) { if (flag) { this->setRingToMesh(this->face, this->frame, glm::vec3(0, 0, -20), radius, 9, 40, deg, deg + deg_span, color_list[i++], ofColor(39)); } else { this->setRingToMesh(this->face, this->frame, glm::vec3(0, 0, -5), radius, 9, 10, deg, deg + deg_span, ofColor(39), ofColor(239)); } flag = !flag; } } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateX(125); this->face.draw(); this->frame.drawWireframe(); this->cam.end(); } //-------------------------------------------------------------- void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height, int deg_start, int deg_end, ofColor face_color, ofColor frame_color) { if (deg_start == deg_end) { return; } int index = face_target.getNumVertices(); for (int deg = deg_start; deg <= deg_end; deg += 1) { auto face_index = face_target.getNumVertices(); vector<glm::vec3> vertices; vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5)); vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * -0.5)); vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * 0.5)); vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5)); vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5)); vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * -0.5)); vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * 0.5)); vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5)); for (auto& vertex : vertices) { vertex += location; } face_target.addVertices(vertices); face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 2); auto frame_index = frame_target.getNumVertices(); frame_target.addVertices(vertices); frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1); frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3); frame_target.addIndex(frame_index + 4); frame_target.addIndex(frame_index + 5); frame_target.addIndex(frame_index + 6); frame_target.addIndex(frame_index + 7); for (int i = 0; i < 8; i++) { this->face.addColor(face_color); this->frame.addColor(frame_color); } } face_target.addIndex(index + 0); face_target.addIndex(index + 3); face_target.addIndex(index + 7); face_target.addIndex(index + 0); face_target.addIndex(index + 7); face_target.addIndex(index + 4); frame_target.addIndex(index + 0); frame_target.addIndex(index + 3); frame_target.addIndex(index + 0); frame_target.addIndex(index + 4); frame_target.addIndex(index + 7); frame_target.addIndex(index + 3); frame_target.addIndex(index + 7); frame_target.addIndex(index + 4); index = frame_target.getNumVertices() - 8; face_target.addIndex(index + 1); face_target.addIndex(index + 2); face_target.addIndex(index + 6); face_target.addIndex(index + 1); face_target.addIndex(index + 6); face_target.addIndex(index + 5); frame_target.addIndex(index + 1); frame_target.addIndex(index + 2); frame_target.addIndex(index + 1); frame_target.addIndex(index + 5); frame_target.addIndex(index + 6); frame_target.addIndex(index + 2); frame_target.addIndex(index + 6); frame_target.addIndex(index + 5); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |