react-native-custom-qr-codes-expo/lib/styles/codeStyles/circle.js

A customisable QR code component for React Native applications. Compatible with Expo

/*

circle.js

This file exports a function for drawing a circle centre piece for a QRCode

  --Geoff Natin 11/1/18 17:41

*/
import React, { Component } from 'react';
import { Circle } from 'react-native-svg';

//Returns an SVG Element for a piece of the 'circle' codeStyle
export const drawCirclePiece = (x,y,modules,pieceProperties,props) => {
  var length = modules.length;
  var width = props.size;
  var height = props.size;
  var xsize = width / (length + 2 * props.padding);
  var ysize = height / (length + 2 * props.padding);
  var px = (x * xsize + props.padding * xsize)+xsize/2;
  var py = (y * ysize + props.padding * ysize)+ysize/2;
  return (
    <Circle key={px+':'+py} cx={px} cy={py} r={xsize/2} fill={props.color} />
  );
};