App that shows the intersection between 2 lines or line segments
npm install line-intersection
npm install line-intersection --save
`
In your js file:
`
var $ = require('line-intersection');
`
If you use es6: import * as $ from 'line-intersection'
> With es6 you can import one or more of the functions directly - import { fun, fun2 } from 'line-intersection'
And use the functions: $.function(params)
> If you want you can replace $ with any var name
* In normal project
Paste this script tag into the HEAD:
`
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After that you just have to use the functions in your code.
Functions:
findIntersection*
This function finds the intersection of two lines.
Input: array with 4 objects inside with parametars "x" and "y"
[{x: val, y: val}, {x: val, y: val}, {x: val, y: val}, {x: val, y: val}]
The objects are points of the lines. There are 4 Objects for every point. In one line there are 2 points. We searching the intersection of two lines - 2 lines * 2 points = 4 objects
Output: Object with "x" and "y" - the coords of the intersection point.
findSegmentIntersection*
This function finds the intersection of two segements of lines.
Input: __Same as findIntersection function__ - array with 4 objects inside with parametars "x" and "y"
Output: Object with "x" and "y" __OR__ "false" - The function returns false when the segments aren't crossed.
isSegmentIntersected*
This function check for intersection of two segments.
Input: __Same as findSegmentIntersection function__ - array with 4 objects inside with parametars "x" and "y"
Output: boolean - The function returns "true" when the line segments are crossed and "false" when they aren't.
isPointBetween*
Check is the point "p" is between "a" and "b"
Input: three points (Objects with "x" and "y"). The point "p" must be first isPointBetween(p, a, b)`