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円を90度づつのモノクロにして、ノイズ関数でズラしてみました。ノイズ関数の強弱によって、円の形が見えたり、四角が見えたりするのが面白いですね。
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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(60); ofBackground(239); ofSetWindowTitle("Insta"); ofSetColor(39); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2); int span = 50; for (int radius = 50; radius < ofGetWidth(); radius += span) { ofRotate(ofMap(ofNoise(radius * 0.005 + ofGetFrameNum() * 0.05), 0, 1, -50, 50)); int small_radius = radius - span; for (int i = 0; i < 2; i++) { int deg_start = i * 180; vector<ofPoint> vertices; for (int deg = deg_start; deg <= deg_start + 90; deg += 1) { vertices.push_back(ofPoint(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD))); } for (int deg = deg_start + 90; deg >= deg_start; deg -= 1) { vertices.push_back(ofPoint(small_radius * cos(deg * DEG_TO_RAD), small_radius * sin(deg * DEG_TO_RAD))); } ofBeginShape(); ofVertices(vertices); ofEndShape(true); } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |