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破線ランダムウォーク。
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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) {}; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openframeworks"); ofBackground(255); ofSetColor(0); ofSetLineWidth(2); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5); for (int i = 0; i < 39; i++) { auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000)); int span = ofRandom(2, 4); int len = ofRandom(1, span); for (int k = 0; k < 18; k += span) { auto location = glm::vec2( ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + k) * 0.008), 0, 1, -350, 350), ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + k) * 0.008), 0, 1, -350, 350)); auto next = glm::vec2( ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + k + len) * 0.008), 0, 1, -350, 350), ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + k + len) * 0.008), 0, 1, -350, 350)); ofDrawLine(location, next); } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |