[ Video ]
[ About ]
伸びて縮む。
Stretch and shrink.
[ Source ]
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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(0); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { int span = 30; for (int x = span * 0.5; x < ofGetWidth(); x += span) { for (int y = span * 0.5; y < ofGetHeight(); y += span) { auto noise_value = ofNoise(x * 0.005, y * 0.005, ofGetFrameNum() * 0.01); if (noise_value < 0.35) { noise_value = 0; } else if (noise_value < 0.6) { noise_value = ofMap(noise_value, 0.35, 0.6, 0, 1); } else { noise_value = 1; } int len = ofMap(noise_value, 0, 1, span * 0.15, span * 0.65); ofDrawLine(x - len, y, x + len, y); ofDrawLine(x, y - len, x, y + len); } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |