[ Video ]
[ About ]
縦線・横線。
Vertical and diagonal lines
[ Source ]
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 |
#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) {}; }; |
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 |
#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(0); ofSetColor(255); ofSetLineWidth(2); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { int span = 40; for (int x = span * 0.5 + span; x < ofGetWidth() - span; x += span) { for (int y = span * 0.5 + span; y < ofGetHeight() - span; y += span) { auto noise_value = ofNoise(x * 0.0045, y * 0.0045, ofGetFrameNum() * 0.015); if (noise_value < 0.4) { 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 * 0.5, span * 0.5 * sqrt(2)); ofPushMatrix(); ofTranslate(x, y); ofRotate(ofMap(noise_value, 0, 1, 0, 45)); ofDrawLine(-len, 0, len, 0); ofDrawLine(0, -len, 0, len); ofPopMatrix(); } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |