@awayfl/awayfl-player
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Flash Player emulator for executing SWF files (published for FP versions 6 and up) in javascript
66 lines (65 loc) • 2.86 kB
JavaScript
/*
* Copyright (c) 2006-2007 Erin Catto http://www.gphysics.com
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
*/
import { b2Math, b2Vec2 } from '../../Common/Math';
/// This holds the mass data computed for a shape.
var b2MassData = /** @class */ (function () {
function b2MassData() {
/// The mass of the shape, usually in kilograms.
this.mass = 0.0;
/// The position of the shape's centroid relative to the shape's origin.
this.center = new b2Vec2(0, 0);
/// The rotational inertia of the shape.
this.I = 0.0;
}
b2MassData.Add = function () {
var masses = [];
for (var _i = 0; _i < arguments.length; _i++) {
masses[_i] = arguments[_i];
}
var finalMass = new b2MassData();
for (var _a = 0, masses_1 = masses; _a < masses_1.length; _a++) {
var massData = masses_1[_a];
finalMass.mass += massData.mass;
}
//b2Settings.b2Assert(finalMass.mass>=0);
if (Math.abs(finalMass.mass) > Number.MIN_VALUE) {
for (var _b = 0, masses_2 = masses; _b < masses_2.length; _b++) {
var massData = masses_2[_b];
finalMass.center.x += massData.mass * massData.center.x;
finalMass.center.y += massData.mass * massData.center.y;
}
finalMass.center.x /= finalMass.mass;
finalMass.center.y /= finalMass.mass;
for (var _c = 0, masses_3 = masses; _c < masses_3.length; _c++) {
var massData = masses_3[_c];
finalMass.I += massData.I;
var r = b2Math.SubtractVV(massData.center, finalMass.center);
finalMass.I += massData.mass * b2Math.b2Dot(r, r);
}
}
return finalMass;
};
b2MassData.prototype.Set = function (massData) {
this.mass = massData.mass;
this.center.x = massData.center.x;
this.center.y = massData.center.y;
this.I = massData.I;
};
return b2MassData;
}());
export { b2MassData };