-
Notifications
You must be signed in to change notification settings - Fork 7.1k
/
GetPoint.js
33 lines (28 loc) · 1.01 KB
/
GetPoint.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
/**
* @author Richard Davey <rich@phaser.io>
* @copyright 2013-2024 Phaser Studio Inc.
* @license {@link https://opensource.org/licenses/MIT|MIT License}
*/
var Point = require('../point/Point');
/**
* Get a point on a line that's a given percentage along its length.
*
* @function Phaser.Geom.Line.GetPoint
* @since 3.0.0
*
* @generic {Phaser.Geom.Point} O - [out,$return]
*
* @param {Phaser.Geom.Line} line - The line.
* @param {number} position - A value between 0 and 1, where 0 is the start, 0.5 is the middle and 1 is the end of the line.
* @param {(Phaser.Geom.Point|object)} [out] - An optional point, or point-like object, to store the coordinates of the point on the line.
*
* @return {(Phaser.Geom.Point|object)} The point on the line.
*/
var GetPoint = function (line, position, out)
{
if (out === undefined) { out = new Point(); }
out.x = line.x1 + (line.x2 - line.x1) * position;
out.y = line.y1 + (line.y2 - line.y1) * position;
return out;
};
module.exports = GetPoint;