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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& frame_target, glm::vec3 location, float radius, int deg_start, int deg_end); ofEasyCam cam; ofMesh frame; vector<glm::vec3> start_location_list; vector<glm::vec3> end_location_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetLineWidth(2); this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); this->frame.clear(); this->start_location_list.clear(); this->end_location_list.clear(); int deg_span = 30; for (int x = -230; x <= 230; x += 230) { for (int y = -230; y <= 230; y += 230) { for (int radius = 30; radius <= 90; radius += 15) { int deg_start = 0; int deg_end = 0; int tmp_deg = 0; auto noise_seed = ofRandom(1000); for (int deg = 0; deg < 360 + tmp_deg; deg += 1) { auto noise_value = ofNoise(glm::vec4(noise_seed, cos(deg * DEG_TO_RAD), sin(deg * DEG_TO_RAD), ofGetFrameNum() * 0.01)); if (noise_value < 0.6) { deg_end = deg; if (deg == 0) { while (true) { tmp_deg -= 1; auto tmp_noise_value = ofNoise(glm::vec4(noise_seed, cos(tmp_deg * DEG_TO_RAD), sin(tmp_deg * DEG_TO_RAD), ofGetFrameNum() * 0.01)); if (tmp_noise_value > 0.55 || tmp_deg < -360) { break; } deg_start = tmp_deg; } } } else { if (deg_start < deg_end) { this->setRingToMesh(this->frame, glm::vec3(x, y, 0), radius, deg_start, deg_end); } deg_start = deg; deg_end = deg; } } if (deg_start != deg_end) { this->setRingToMesh(this->frame, glm::vec3(x, y, 0), radius, deg_start, deg_end); } } } } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofSetColor(39); this->frame.drawWireframe(); for (auto& location : this->end_location_list) { ofFill(); ofSetColor(239); ofDrawCircle(location, 3); ofNoFill(); ofSetColor(39); ofDrawCircle(location, 3); } for (auto& location : this->start_location_list) { ofFill(); ofSetColor(39); ofDrawCircle(location, 3); } this->cam.end(); } //-------------------------------------------------------------- void ofApp::setRingToMesh(ofMesh& frame_target, glm::vec3 location, float radius, int deg_start, int deg_end) { if (deg_start == deg_end) { return; } int index = frame_target.getNumVertices(); for (int deg = deg_start; deg <= deg_end; deg += 1) { vector<glm::vec3> vertices; vertices.push_back(location + glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0)); vertices.push_back(location + glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), 0)); auto frame_index = frame_target.getNumVertices(); frame_target.addVertices(vertices); frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1); if (deg == deg_start) { this->start_location_list.push_back(vertices.front()); } if (deg == deg_end) { this->end_location_list.push_back(vertices.back()); } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |