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[ About ]
It emanates from a red orb.
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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; int base_radius; int number_of_satellite; vector<glm::vec3> satellite_location_list; vector<glm::vec2> satellite_noise_seed_list; vector<glm::vec3> location_list; vector<glm::vec3> velocity_list; ofMesh frame; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(239); ofSetColor(39); ofEnableDepthTest(); this->base_radius = 50; this->number_of_satellite = 15; for (int k = 0; k < this->number_of_satellite; k++) { this->satellite_location_list.push_back(glm::normalize(glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), ofRandom(-1, 1))) * this->base_radius * 1.2); this->satellite_noise_seed_list.push_back(glm::vec2(ofRandom(1000), ofRandom(1000))); } this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); } //-------------------------------------------------------------- void ofApp::update() { for (int i = 0; i < this->number_of_satellite; i++) { auto rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(this->satellite_noise_seed_list[i].x, (ofGetFrameNum() + 0) * 0.005), 0, 1, -PI * 2, PI * 2), glm::vec3(0, 1, 0)); auto rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(this->satellite_noise_seed_list[i].y, (ofGetFrameNum() + 0) * 0.005), 0, 1, -PI * 2, PI * 2), glm::vec3(1, 0, 0)); auto satellite_location = glm::vec4(this->satellite_location_list[i], 0) * rotation_y * rotation_x; auto next_rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(this->satellite_noise_seed_list[i].x, (ofGetFrameNum() + 1) * 0.005), 0, 1, -PI * 2, PI * 2), glm::vec3(0, 1, 0)); auto next_rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(this->satellite_noise_seed_list[i].y, (ofGetFrameNum() + 1) * 0.005), 0, 1, -PI * 2, PI * 2), glm::vec3(1, 0, 0)); auto next_satellite_location = glm::vec4(this->satellite_location_list[i], 0) * next_rotation_y * next_rotation_x; auto distance = satellite_location - next_satellite_location; this->frame.addVertex(satellite_location); this->frame.addColor(ofColor(39)); this->velocity_list.push_back(distance * 0.75); } for (int i = 0; i < this->frame.getNumVertices(); i++) { this->frame.setVertex(i, this->frame.getVertex(i) + this->velocity_list[i]); } for (int i = this->velocity_list.size() - 1; i >= 0; i--) { if (glm::length(this->frame.getVertex(i)) > 150) { this->velocity_list.erase(this->velocity_list.begin() + i); this->frame.removeVertex(i); } } this->frame.clearIndices(); for (int i = 0; i < this->frame.getNumVertices(); i++) { this->frame.setColor(i, ofColor(239, 39, 39, ofMap(glm::length(this->frame.getVertex(i)), 50, 150, 255, 0))); for (int k = i + 1; k < this->frame.getNumVertices(); k += 1) { if (glm::distance(this->frame.getVertex(i), this->frame.getVertex(k)) < 20) { this->frame.addIndex(i); this->frame.addIndex(k); } } } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateY(ofGetFrameNum()); ofRotateX(ofGetFrameNum() * 0.75); ofSetColor(239, 39, 39); ofDrawSphere(glm::vec3(), 30); for (int i = 0; i < this->frame.getNumVertices(); i++) { ofSetColor(this->frame.getColor(i)); ofDrawSphere(this->frame.getVertex(i), 1); } this->frame.drawWireframe(); this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |