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近いパーティクルを囲う。
Surround near particle.
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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) {}; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(239); ofSetColor(39); ofSetLineWidth(3); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { vector<glm::vec2> location_list; for (int i = 0; i < 20; i++) { location_list.push_back(glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0035), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0035), 0, 1, 0, ofGetWidth()))); } for (int i = 0; i < location_list.size(); i++) { ofFill(); ofDrawCircle(location_list[i], 10); for (int k = i + 1; k < location_list.size(); k++) { auto distance = glm::distance(location_list[i], location_list[k]); if (distance < 100) { vector<glm::vec2> vertices; auto direction_rad = std::atan2(location_list[k].y - location_list[i].y, location_list[k].x - location_list[i].x); auto direction_deg = direction_rad * RAD_TO_DEG + 90; for (int deg = direction_deg; deg <= direction_deg + 180; deg += 3) { vertices.push_back(location_list[i] + glm::vec2(15 * cos(deg * DEG_TO_RAD), 15 * sin(deg * DEG_TO_RAD))); } for (int deg = direction_deg + 180; deg <= direction_deg + 360; deg += 3) { vertices.push_back(location_list[k] + glm::vec2(15 * cos(deg * DEG_TO_RAD), 15 * sin(deg * DEG_TO_RAD))); } ofNoFill(); ofBeginShape(); ofVertices(vertices); ofEndShape(true); } } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |