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中央を避ける。
Avoid the center.
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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 mouseEntered(int x, int y) {}; void mouseExited(int x, int y) {}; void windowResized(int w, int h) {}; void dragEvent(ofDragInfo dragInfo) {}; void gotMessage(ofMessage msg) {}; ofEasyCam cam; ofMesh frame; vector<glm::vec3> front_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(239); ofSetColor(39); ofSetLineWidth(2); ofEnableDepthTest(); this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); this->frame.clear(); this->front_list.clear(); for (int i = 0; i < 500; i++) { auto x = ofRandom(-115, 115); auto y = (int)(ofRandom(1000) + ofGetFrameNum() * ofRandom(2, 4)) % 600 - 300; auto z = ofRandom(-115, 115); auto index = this->frame.getNumVertices(); for (int k = 0; k < 30; k++) { auto tmp_y = y - k; if (tmp_y > 300 || tmp_y < -300) break; auto location = glm::vec3(x, tmp_y, z); if (glm::length(location) < 230) { location = glm::normalize(location) * 230; } this->frame.addVertex(location); if (k > 0) { this->frame.addIndex(index + k - 1); this->frame.addIndex(index + k); } else { this->front_list.push_back(location); } } } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateX(180); ofRotateY(ofGetFrameNum() * 0.5); this->frame.drawWireframe(); for (int i = 0; i < this->front_list.size(); i++) { ofDrawSphere(this->front_list[i], 3); } this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |