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ドットと円
Dot and circle.
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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) {}; vector<glm::vec2> locations; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetColor(39); ofSetLineWidth(1.5); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); this->locations.clear(); for (int i = 0; i < 1024; i++) { this->locations.push_back(glm::vec2(ofRandom(ofGetWidth()), ofRandom(ofGetHeight()))); } auto point = glm::vec2( ofMap(ofNoise(ofRandom(100), ofGetFrameNum() * 0.005), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(ofRandom(100), ofGetFrameNum() * 0.005), 0, 1, 0, ofGetHeight()) ); for (auto& location : this->locations) { float distance = glm::distance(location, point); if (distance < 100) { location = point + glm::normalize(location - point) * 100; } } } //-------------------------------------------------------------- void ofApp::draw() { for (auto& location : this->locations) { ofDrawCircle(location, 5); } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |