# Intersection of curves II

From JSXGraph Wiki

Revision as of 10:27, 28 March 2020 by A WASSERMANN (talk | contribs)

## The underlying JavaScript code

```
var board = JXG.JSXGraph.initBoard('jxgbox', {
axis:true,
boundingbox:[-5, 5, 5, -5]
});
var curve1 = board.create('curve', [
[-3, 3, 0, -3],
[3, 3, 0, 3]
],
{strokeColor: 'black', fillColor: 'none', fillOpacity: 0.8});
var curve2 = board.create('polygon', [[3, 4], [-4, 0], [-4, 4]],
{strokeColor: 'blue', fillColor: 'red', fillOpacity: 0.3});
var clip_path = board.create('curve', [[], []], {strokeWidth: 3, fillColor: 'yellow', fillOpacity: 0.6});
clip_path.updateDataArray = function() {
var a = JXG.Math.Clip.intersection(curve1, curve2, this.board);
this.dataX = a[0];
this.dataY = a[1];
};
board.update();
```