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A bug about curvedifference in JsxGraph #522

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EmeryBAI opened this issue Mar 13, 2023 · 0 comments
Open

A bug about curvedifference in JsxGraph #522

EmeryBAI opened this issue Mar 13, 2023 · 0 comments

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@EmeryBAI
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write code about Venn diagram to draw the specific area with yellow. (Literarlly, we can represent the part as "A∩B-A")

<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <title>curvedifference Demo</title>
  <script type="text/javascript" src="https://jsxgraph.uni-bayreuth.de/distrib/jsxgraphcore.js"></script>
</head>
<body>
  <div id="jxgbox" style="width:400px;height:400px;"></div>
  <script type="text/javascript">
    var board = JXG.JSXGraph.initBoard('jxgbox', {boundingbox: [-3, 3, 3, -3], axis:true});

    
    var circle1 = board.create('circle', [[-1, 0], 2], {strokeWidth:2, strokeColor:'blue', fillOpacity:0.3});
    var circle2 = board.create('circle', [ [0, Math.sqrt(3)], 2], {strokeWidth:2, strokeColor:'red', fillOpacity:0.3});
    var circle3 = board.create('circle', [[1, 0], 2], {strokeWidth:2, strokeColor:'brown', fillOpacity:0.3});

    let temp = board.create("curveunion", [circle1,circle2],{
        fillColor: "blue",
        fillOpacity: 0
    } )

    board.create("curvedifference", [temp,circle1],{
        fillColor: "yellow",
        fillOpacity: 1
    } )
    board.update();
  </script>
</body>
</html>

Actual output:
image

Expected output:
image
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@EmeryBAI