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パーリンノイズ(x座標 + y座標, フレーム番号)で生成した色で着色した円
Circle color is determined by Perlin Noise (x + y, frame number).
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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(39); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { int radius = 70; int circle_width = radius * 0.25; int deg_span = 15; for (int x = 72; x < ofGetWidth(); x += 144) { for (int y = 72; y < ofGetHeight(); y += 144) { ofPushMatrix(); ofTranslate(x, y); for (int deg = 0; deg < 360; deg += deg_span) { ofColor color; ofPoint color_point(x + radius * cos((deg + deg_span * 0.5) * DEG_TO_RAD), y + radius * sin((deg + deg_span * 0.5) * DEG_TO_RAD)); float noise_value = ofNoise(color_point.x * 0.01 + color_point.y * 0.01, ofGetFrameNum() * 0.01) * 255; color.setHsb(noise_value, 200, 255); ofSetColor(color); vector<ofPoint> vertices; for (int d = deg; d <= deg + deg_span; d++) { vertices.push_back(ofPoint(radius * cos(d * DEG_TO_RAD), radius * sin(d * DEG_TO_RAD))); } for (int d = deg + deg_span; d >= deg; d--) { vertices.push_back(ofPoint((radius - circle_width) * cos(d * DEG_TO_RAD), (radius - circle_width) * sin(d * DEG_TO_RAD))); } ofBeginShape(); ofVertices(vertices); ofEndShape(true); } ofPopMatrix(); } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |