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宇宙みを目指して。
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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; ofMesh mesh; vector<float> radius_list; vector<float> speed_list; vector<float> deg_list; vector<float> deg_speed_list; vector<ofColor> color_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(0); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); ofEnableDepthTest(); this->mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); } //-------------------------------------------------------------- void ofApp::update() { this->mesh.clear(); ofColor color; for (int i = 0; i < 5; i++) { this->radius_list.push_back(100); this->speed_list.push_back(ofRandom(0.5, 1.5)); this->deg_list.push_back(ofRandom(360)); this->deg_speed_list.push_back(ofRandom(1, 2)); color.setHsb(ofRandom(255), 130, 255); this->color_list.push_back(color); } for (int i = this->radius_list.size() - 1; i >= 0; i--) { this->radius_list[i] += this->speed_list[i]; this->deg_list[i] += this->deg_speed_list[i]; this->mesh.addVertex(glm::vec3(this->radius_list[i] * cos(this->deg_list[i] * DEG_TO_RAD), this->radius_list[i] * sin(this->deg_list[i] * DEG_TO_RAD), 0)); this->mesh.addColor(this->color_list[i]); if (this->radius_list[i] > 450) { this->radius_list.erase(this->radius_list.begin() + i); this->speed_list.erase(this->speed_list.begin() + i); this->deg_list.erase(this->deg_list.begin() + i); this->deg_speed_list.erase(this->deg_speed_list.begin() + i); this->color_list.erase(this->color_list.begin() + i); } } for (int i = 0; i < this->mesh.getNumVertices(); i++) { for (int k = i + 1; k < this->mesh.getNumVertices(); k++) { auto distance = glm::distance(this->mesh.getVertex(i), this->mesh.getVertex(k)); if (distance < 13) { this->mesh.addIndex(i); this->mesh.addIndex(k); } auto alpha = distance < 10 ? 255 : ofMap(distance, 10, 13, 255, 0); if (this->mesh.getColor(i).a < alpha) { this->mesh.setColor(i, ofColor(this->mesh.getColor(i), alpha)); } if (this->mesh.getColor(k).a < alpha) { this->mesh.setColor(k, ofColor(this->mesh.getColor(k), alpha)); } } } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofSetColor(0); ofDrawSphere(glm::vec3(), 100); for (int i = 0; i < this->mesh.getNumVertices(); i++) { ofSetColor(this->mesh.getColor(i)); ofDrawSphere(this->mesh.getVertex(i), 1); } this->mesh.drawWireframe(); this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |