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角度ごとに、二つの半径の円座標を結ぶ線を、Noiseで歪めました
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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); ofSetWindowTitle("Insta"); ofBackground(39); ofSetColor(239, 128); ofNoFill(); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5); int start_radius = 100; int max_radius = 320; for (int deg = 0; deg < 360; deg += 2) { int half_radius = (max_radius - start_radius) * 0.5 + start_radius; ofPoint half_point = ofPoint(half_radius * cos(deg * DEG_TO_RAD), half_radius * sin(deg * DEG_TO_RAD)); ofBeginShape(); for (int radius = start_radius; radius <= max_radius; radius += 1) { ofPoint point = ofPoint(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)); float noise_deg = ofMap(ofNoise(point.x * 0.008, point.y * 0.008 + ofGetFrameNum() * 0.008), 0, 1, -25, 25); float deg_param = ofMap(half_point.distance(point), 0, (max_radius - start_radius) * 0.5, 1, 0); noise_deg *= deg_param; point = ofPoint(ofPoint(radius * cos((deg + noise_deg) * DEG_TO_RAD), radius * sin((deg + noise_deg) * DEG_TO_RAD))); ofVertex(point); } ofEndShape(); } } //======================================================================== int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |