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ノイズの値で線を引くかどうかを決める。
The value of noise determines whether to draw a line.
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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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nclude "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetColor(39); ofSetLineWidth(2); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { int height = 60; int y = ofGetHeight() * 0.5; bool flag = true; for (int y = height * 2; y <= ofGetHeight() - height * 2; y += height * 2) { int span = (flag = !flag) ? 2 : 5; for (int x = 60; x <= ofGetWidth() - 60; x += span) { auto noise_value = ofNoise(x * 0.03, y * 0.03, ofGetFrameNum() * 0.05); if (noise_value < 0.6) { ofDrawLine(x, y - height * 0.5, x, y + height * 0.5); } } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |