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90度の円弧を2色1対にして描写しました
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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"); ofNoFill(); ofSetLineWidth(3); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5); ofColor colors[] = { ofColor(200, 39, 39), ofColor(39, 39, 200) }; for (int radius = 50; radius < 350; radius += 15) { int deg_start = ofNoise(ofGetFrameNum() * 0.01 + radius * 0.005) * 720; for (int i = 0; i < 2; i++) { ofSetColor(colors[i]); ofBeginShape(); for (int deg = deg_start + i * 180; deg < deg_start + i * 180 + 90; deg += 1) { ofVertex(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)); } ofEndShape(); } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |