foster/liabru-matter-js
0
0
Fork 0
mirror of https://github.com/liabru/matter-js.git synced 2024-11-23 09:26:51 -05:00
Code Issues Wiki Activity

fix inertia change in Body.setMass, closes #378

Browse source
This commit is contained in:
liabru 2017-11-25 14:11:53 +00:00
parent 894c1efeee
commit f7d18779be
1 changed files with 6 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
src/body/Body.js
View file

@ -275,19 +275,23 @@ var Axes = require('../geometry/Axes');
};
/**
* Sets the mass of the body. Inverse mass and density are automatically updated to reflect the change.
* Sets the mass of the body. Inverse mass, density and inertia are automatically updated to reflect the change.
* @method setMass
* @param {body} body
* @param {number} mass
*/
Body.setMass = function(body, mass) {
var moment = body.inertia / (body.mass / 6);
body.inertia = moment * (mass / 6);
body.inverseInertia = 1 / body.inertia;
body.mass = mass;
body.inverseMass = 1 / body.mass;
body.density = body.mass / body.area;
};
/**
* Sets the density of the body. Mass is automatically updated to reflect the change.
* Sets the density of the body. Mass and inertia are automatically updated to reflect the change.
* @method setDensity
* @param {body} body
* @param {number} density