@react-three/p2/dist/index.js

2D physics based hooks for react-three-fiber

import { createContext, useEffect, useState, useRef, useCallback, useLayoutEffect, useMemo, useContext, Suspense } from 'react';
import { useThree, useFrame } from '@react-three/fiber';
import { Vector3, Quaternion, Matrix4, InstancedMesh, Box3, InstancedBufferGeometry, Float32BufferAttribute, InstancedInterleavedBuffer, InterleavedBufferAttribute, WireframeGeometry, Sphere, UniformsLib, Vector2, ShaderLib, UniformsUtils, ShaderMaterial, Vector4, Line3, Mesh, MathUtils, Scene, Euler, Object3D, DynamicDrawUsage } from 'three';
import EventEmitter$4 from 'events';
import { jsx, jsxs } from 'react/jsx-runtime';

const atomicNames = ['allowSleep', 'angle', 'angularDamping', 'angularVelocity', 'collisionFilterGroup', 'collisionFilterMask', 'collisionResponse', 'fixedRotation', 'isTrigger', 'linearDamping', 'mass', 'material', 'sleepSpeedLimit', 'sleepTimeLimit', 'userData'];
const vectorNames = ['position', 'velocity'];
const subscriptionNames = [...atomicNames, ...vectorNames, 'collisions', 'raysData'];
const context = /*#__PURE__*/createContext({});
const debugContext = /*#__PURE__*/createContext(null);

function useUpdateWorldPropsEffect(_ref) {
  let {
    axisIndex,
    broadphase,
    gravity,
    iterations,
    tolerance,
    worker
  } = _ref;
  useEffect(() => {
    worker.axisIndex = axisIndex;
  }, [axisIndex]);
  useEffect(() => {
    worker.broadphase = broadphase;
  }, [broadphase]);
  useEffect(() => {
    worker.gravity = gravity;
  }, [gravity]);
  useEffect(() => {
    worker.iterations = iterations;
  }, [iterations]);
  useEffect(() => {
    worker.tolerance = tolerance;
  }, [tolerance]);
}

var WorkerClass = null;

try {
    var WorkerThreads =
        typeof module !== 'undefined' && typeof module.require === 'function' && module.require('worker_threads') ||
        typeof __non_webpack_require__ === 'function' && __non_webpack_require__('worker_threads') ||
        typeof require === 'function' && require('worker_threads');
    WorkerClass = WorkerThreads.Worker;
} catch(e) {} // eslint-disable-line

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function createBase64WorkerFactory$2(base64, sourcemapArg, enableUnicodeArg) {
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    return function WorkerFactory(options) {
        return new WorkerClass(body, Object.assign({}, options, { eval: true }));
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}

function decodeBase64(base64, enableUnicode) {
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            binaryView[i] = binaryString.charCodeAt(i);
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        return String.fromCharCode.apply(null, new Uint16Array(binaryView.buffer));
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    return binaryString;
}

function createURL(base64, sourcemapArg, enableUnicodeArg) {
    var sourcemap = sourcemapArg === undefined ? null : sourcemapArg;
    var enableUnicode = enableUnicodeArg === undefined ? false : enableUnicodeArg;
    var source = decodeBase64(base64, enableUnicode);
    var start = source.indexOf('\n', 10) + 1;
    var body = source.substring(start) + (sourcemap ? '\/\/# sourceMappingURL=' + sourcemap : '');
    var blob = new Blob([body], { type: 'application/javascript' });
    return URL.createObjectURL(blob);
}

function createBase64WorkerFactory$1(base64, sourcemapArg, enableUnicodeArg) {
    var url;
    return function WorkerFactory(options) {
        url = url || createURL(base64, sourcemapArg, enableUnicodeArg);
        return new Worker(url, options);
    };
}

var kIsNodeJS = Object.prototype.toString.call(typeof process !== 'undefined' ? process : 0) === '[object process]';

function isNodeJS() {
    return kIsNodeJS;
}

function createBase64WorkerFactory(base64, sourcemapArg, enableUnicodeArg) {
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    return createBase64WorkerFactory$1(base64, sourcemapArg, enableUnicodeArg);
}

var WorkerFactory = createBase64WorkerFactory('/* rollup-plugin-web-worker-loader */
(function () {
    'use strict';

    var p2 = {exports: {}};

    var vec2$q = {exports: {}};

    /* global P2_ARRAY_TYPE */

    var Utils_1 = Utils$7;
    /**
     * Misc utility functions
     * @class Utils
     * @constructor
     */

    function Utils$7() {}
    /**
     * Append the values in array b to the array a. See <a href="http://stackoverflow.com/questions/1374126/how-to-append-an-array-to-an-existing-javascript-array/1374131#1374131">this</a> for an explanation.
     * @method appendArray
     * @static
     * @param  {Array} a
     * @param  {Array} b
     */


    Utils$7.appendArray = function (a, b) {
      if (b.length < 150000) {
        a.push.apply(a, b);
      } else {
        for (var i = 0, len = b.length; i !== len; ++i) {
          a.push(b[i]);
        }
      }
    };
    /**
     * Garbage free Array.splice(). Does not allocate a new array.
     * @method splice
     * @static
     * @param  {Array} array
     * @param  {Number} index
     * @param  {Number} howmany
     */


    Utils$7.splice = function (array, index, howmany) {
      howmany = howmany || 1;

      for (var i = index, len = array.length - howmany; i < len; i++) {
        array[i] = array[i + howmany];
      }

      array.length = len;
    };
    /**
     * Remove an element from an array, if the array contains the element.
     * @method arrayRemove
     * @static
     * @param  {Array} array
     * @param  {Number} element
     */


    Utils$7.arrayRemove = function (array, element) {
      var idx = array.indexOf(element);

      if (idx !== -1) {
        Utils$7.splice(array, idx, 1);
      }
    };
    /**
     * The array type to use for internal numeric computations throughout the library. Float32Array is used if it is available, but falls back on Array. If you want to set array type manually, inject it via the global variable P2_ARRAY_TYPE. See example below.
     * @static
     * @property {function} ARRAY_TYPE
     * @example
     *     <script>
     *         <!-- Inject your preferred array type before loading p2.js -->
     *         P2_ARRAY_TYPE = Array;
     *     </script>
     *     <script src="p2.js"></script>
     */


    if (typeof P2_ARRAY_TYPE !== 'undefined') {
      Utils$7.ARRAY_TYPE = P2_ARRAY_TYPE;
    } else if (typeof Float32Array !== 'undefined') {
      Utils$7.ARRAY_TYPE = Float32Array;
    } else {
      Utils$7.ARRAY_TYPE = Array;
    }
    /**
     * Extend an object with the properties of another
     * @static
     * @method extend
     * @param  {object} a
     * @param  {object} b
     */


    Utils$7.extend = function (a, b) {
      for (var key in b) {
        a[key] = b[key];
      }
    };
    /**
     * Shallow clone an object. Returns a new object instance with the same properties as the input instance.
     * @static
     * @method shallowClone
     * @param  {object} obj
     */


    Utils$7.shallowClone = function (obj) {
      var newObj = {};
      Utils$7.extend(newObj, obj);
      return newObj;
    };
    /**
     * Extend an options object with default values.
     * @deprecated Not used internally, will be removed.
     * @static
     * @method defaults
     * @param  {object} options The options object. May be falsy: in this case, a new object is created and returned.
     * @param  {object} defaults An object containing default values.
     * @return {object} The modified options object.
     */


    Utils$7.defaults = function (options, defaults) {
      console.warn('Utils.defaults is deprecated.');
      options = options || {};

      for (var key in defaults) {
        if (!(key in options)) {
          options[key] = defaults[key];
        }
      }

      return options;
    };

    /* Copyright (c) 2013, Brandon Jones, Colin MacKenzie IV. All rights reserved.

    Redistribution and use in source and binary forms, with or without modification,
    are permitted provided that the following conditions are met:

      * Redistributions of source code must retain the above copyright notice, this
        list of conditions and the following disclaimer.
      * Redistributions in binary form must reproduce the above copyright notice,
        this list of conditions and the following disclaimer in the documentation
        and/or other materials provided with the distribution.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
    ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
    ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */

    /**
     * The vec2 object from glMatrix, with some extensions and some removed methods. See http://glmatrix.net.
     * @class vec2
     */
    var vec2$p = vec2$q.exports = {};

    var Utils$6 = Utils_1;
    /**
     * Make a cross product and only return the z component
     * @method crossLength
     * @static
     * @param  {Array} a
     * @param  {Array} b
     * @return {Number}
     */


    vec2$p.crossLength = function (a, b) {
      return a[0] * b[1] - a[1] * b[0];
    };
    /**
     * Cross product between a vector and the Z component of a vector
     * @method crossVZ
     * @static
     * @param  {Array} out
     * @param  {Array} vec
     * @param  {Number} zcomp
     * @return {Array}
     */


    vec2$p.crossVZ = function (out, vec, zcomp) {
      vec2$p.rotate(out, vec, -Math.PI / 2); // Rotate according to the right hand rule

      vec2$p.scale(out, out, zcomp); // Scale with z

      return out;
    };
    /**
     * Cross product between a vector and the Z component of a vector
     * @method crossZV
     * @static
     * @param  {Array} out
     * @param  {Number} zcomp
     * @param  {Array} vec
     * @return {Array}
     */


    vec2$p.crossZV = function (out, zcomp, vec) {
      vec2$p.rotate(out, vec, Math.PI / 2); // Rotate according to the right hand rule

      vec2$p.scale(out, out, zcomp); // Scale with z

      return out;
    };
    /**
     * Rotate a vector by an angle
     * @method rotate
     * @static
     * @param  {Array} out
     * @param  {Array} a
     * @param  {Number} angle
     * @return {Array}
     */


    vec2$p.rotate = function (out, a, angle) {
      if (angle !== 0) {
        var c = Math.cos(angle),
            s = Math.sin(angle),
            x = a[0],
            y = a[1];
        out[0] = c * x - s * y;
        out[1] = s * x + c * y;
      } else {
        out[0] = a[0];
        out[1] = a[1];
      }

      return out;
    };
    /**
     * Rotate a vector 90 degrees clockwise
     * @method rotate90cw
     * @static
     * @param  {Array} out
     * @param  {Array} a
     * @param  {Number} angle
     * @return {Array}
     */


    vec2$p.rotate90cw = function (out, a) {
      var x = a[0];
      var y = a[1];
      out[0] = y;
      out[1] = -x;
      return out;
    };
    /**
     * Transform a point position to local frame.
     * @method toLocalFrame
     * @param  {Array} out
     * @param  {Array} worldPoint
     * @param  {Array} framePosition
     * @param  {Number} frameAngle
     * @return {Array}
     */


    vec2$p.toLocalFrame = function (out, worldPoint, framePosition, frameAngle) {
      var c = Math.cos(-frameAngle),
          s = Math.sin(-frameAngle),
          x = worldPoint[0] - framePosition[0],
          y = worldPoint[1] - framePosition[1];
      out[0] = c * x - s * y;
      out[1] = s * x + c * y;
      return out;
    };
    /**
     * Transform a point position to global frame.
     * @method toGlobalFrame
     * @param  {Array} out
     * @param  {Array} localPoint
     * @param  {Array} framePosition
     * @param  {Number} frameAngle
     */


    vec2$p.toGlobalFrame = function (out, localPoint, framePosition, frameAngle) {
      var c = Math.cos(frameAngle),
          s = Math.sin(frameAngle),
          x = localPoint[0],
          y = localPoint[1],
          addX = framePosition[0],
          addY = framePosition[1];
      out[0] = c * x - s * y + addX;
      out[1] = s * x + c * y + addY;
    };
    /**
     * Transform a vector to local frame.
     * @method vectorToLocalFrame
     * @param  {Array} out
     * @param  {Array} worldVector
     * @param  {Number} frameAngle
     * @return {Array}
     */


    vec2$p.vectorToLocalFrame = function (out, worldVector, frameAngle) {
      var c = Math.cos(-frameAngle),
          s = Math.sin(-frameAngle),
          x = worldVector[0],
          y = worldVector[1];
      out[0] = c * x - s * y;
      out[1] = s * x + c * y;
      return out;
    };
    /**
     * Transform a vector to global frame.
     * @method vectorToGlobalFrame
     * @param  {Array} out
     * @param  {Array} localVector
     * @param  {Number} frameAngle
     */


    vec2$p.vectorToGlobalFrame = vec2$p.rotate;
    /**
     * Compute centroid of a triangle spanned by vectors a,b,c. See http://easycalculation.com/analytical/learn-centroid.php
     * @method centroid
     * @static
     * @param  {Array} out
     * @param  {Array} a
     * @param  {Array} b
     * @param  {Array} c
     * @return  {Array} The "out" vector.
     */

    vec2$p.centroid = function (out, a, b, c) {
      vec2$p.add(out, a, b);
      vec2$p.add(out, out, c);
      vec2$p.scale(out, out, 1 / 3);
      return out;
    };
    /**
     * Creates a new, empty vec2
     * @static
     * @method create
     * @return {Array} a new 2D vector
     */


    vec2$p.create = function () {
      var out = new Utils$6.ARRAY_TYPE(2);
      out[0] = 0;
      out[1] = 0;
      return out;
    };
    /**
     * Creates a new vec2 initialized with values from an existing vector
     * @static
     * @method clone
     * @param {Array} a vector to clone
     * @return {Array} a new 2D vector
     */


    vec2$p.clone = function (a) {
      var out = new Utils$6.ARRAY_TYPE(2);
      out[0] = a[0];
      out[1] = a[1];
      return out;
    };
    /**
     * Creates a new vec2 initialized with the given values
     * @static
     * @method fromValues
     * @param {Number} x X component
     * @param {Number} y Y component
     * @return {Array} a new 2D vector
     */


    vec2$p.fromValues = function (x, y) {
      var out = new Utils$6.ARRAY_TYPE(2);
      out[0] = x;
      out[1] = y;
      return out;
    };
    /**
     * Copy the values from one vec2 to another
     * @static
     * @method copy
     * @param {Array} out the receiving vector
     * @param {Array} a the source vector
     * @return {Array} out
     */


    vec2$p.copy = function (out, a) {
      out[0] = a[0];
      out[1] = a[1];
      return out;
    };
    /**
     * Set the components of a vec2 to the given values
     * @static
     * @method set
     * @param {Array} out the receiving vector
     * @param {Number} x X component
     * @param {Number} y Y component
     * @return {Array} out
     */


    vec2$p.set = function (out, x, y) {
      out[0] = x;
      out[1] = y;
      return out;
    };
    /**
     * Adds two vec2's
     * @static
     * @method add
     * @param {Array} out the receiving vector
     * @param {Array} a the first operand
     * @param {Array} b the second operand
     * @return {Array} out
     */


    vec2$p.add = function (out, a, b) {
      out[0] = a[0] + b[0];
      out[1] = a[1] + b[1];
      return out;
    };
    /**
     * Subtracts two vec2's
     * @static
     * @method subtract
     * @param {Array} out the receiving vector
     * @param {Array} a the first operand
     * @param {Array} b the second operand
     * @return {Array} out
     */


    vec2$p.subtract = function (out, a, b) {
      out[0] = a[0] - b[0];
      out[1] = a[1] - b[1];
      return out;
    };
    /**
     * Multiplies two vec2's
     * @static
     * @method multiply
     * @param {Array} out the receiving vector
     * @param {Array} a the first operand
     * @param {Array} b the second operand
     * @return {Array} out
     */


    vec2$p.multiply = function (out, a, b) {
      out[0] = a[0] * b[0];
      out[1] = a[1] * b[1];
      return out;
    };
    /**
     * Divides two vec2's
     * @static
     * @method divide
     * @param {Array} out the receiving vector
     * @param {Array} a the first operand
     * @param {Array} b the second operand
     * @return {Array} out
     */


    vec2$p.divide = function (out, a, b) {
      out[0] = a[0] / b[0];
      out[1] = a[1] / b[1];
      return out;
    };
    /**
     * Scales a vec2 by a scalar number
     * @static
     * @method scale
     * @param {Array} out the receiving vector
     * @param {Array} a the vector to scale
     * @param {Number} b amount to scale the vector by
     * @return {Array} out
     */


    vec2$p.scale = function (out, a, b) {
      out[0] = a[0] * b;
      out[1] = a[1] * b;
      return out;
    };
    /**
     * Calculates the euclidian distance between two vec2's
     * @static
     * @method distance
     * @param {Array} a the first operand
     * @param {Array} b the second operand
     * @return {Number} distance between a and b
     */


    vec2$p.distance = function (a, b) {
      var x = b[0] - a[0],
          y = b[1] - a[1];
      return Math.sqrt(x * x + y * y);
    };
    /**
     * Calculates the squared euclidian distance between two vec2's
     * @static
     * @method squaredDistance
     * @param {Array} a the first operand
     * @param {Array} b the second operand
     * @return {Number} squared distance between a and b
     */


    vec2$p.squaredDistance = function (a, b) {
      var x = b[0] - a[0],
          y = b[1] - a[1];
      return x * x + y * y;
    };
    /**
     * Calculates the length of a vec2
     * @static
     * @method length
     * @param {Array} a vector to calculate length of
     * @return {Number} length of a
     */


    vec2$p.length = function (a) {
      var x = a[0],
          y = a[1];
      return Math.sqrt(x * x + y * y);
    };
    /**
     * Calculates the squared length of a vec2
     * @static
     * @method squaredLength
     * @param {Array} a vector to calculate squared length of
     * @return {Number} squared length of a
     */


    vec2$p.squaredLength = function (a) {
      var x = a[0],
          y = a[1];
      return x * x + y * y;
    };
    /**
     * Negates the components of a vec2
     * @static
     * @method negate
     * @param {Array} out the receiving vector
     * @param {Array} a vector to negate
     * @return {Array} out
     */


    vec2$p.negate = function (out, a) {
      out[0] = -a[0];
      out[1] = -a[1];
      return out;
    };
    /**
     * Normalize a vec2
     * @static
     * @method normalize
     * @param {Array} out the receiving vector
     * @param {Array} a vector to normalize
     * @return {Array} out
     */


    vec2$p.normalize = function (out, a) {
      var x = a[0],
          y = a[1];
      var len = x * x + y * y;

      if (len > 0) {
        //TODO: evaluate use of glm_invsqrt here?
        len = 1 / Math.sqrt(len);
        out[0] = a[0] * len;
        out[1] = a[1] * len;
      }

      return out;
    };
    /**
     * Calculates the dot product of two vec2's
     * @static
     * @method dot
     * @param {Array} a the first operand
     * @param {Array} b the second operand
     * @return {Number} dot product of a and b
     */


    vec2$p.dot = function (a, b) {
      return a[0] * b[0] + a[1] * b[1];
    };
    /**
     * Returns a string representation of a vector
     * @static
     * @method str
     * @param {Array} vec vector to represent as a string
     * @return {String} string representation of the vector
     */


    vec2$p.str = function (a) {
      return 'vec2(' + a[0] + ', ' + a[1] + ')';
    };
    /**
     * Linearly interpolate/mix two vectors.
     * @static
     * @method lerp
     * @param {Array} out
     * @param {Array} a First vector
     * @param {Array} b Second vector
     * @param {number} t Lerp factor
     */


    vec2$p.lerp = function (out, a, b, t) {
      var ax = a[0],
          ay = a[1];
      out[0] = ax + t * (b[0] - ax);
      out[1] = ay + t * (b[1] - ay);
      return out;
    };
    /**
     * Reflect a vector along a normal.
     * @static
     * @method reflect
     * @param {Array} out
     * @param {Array} vector
     * @param {Array} normal
     */


    vec2$p.reflect = function (out, vector, normal) {
      var dot = vector[0] * normal[0] + vector[1] * normal[1];
      out[0] = vector[0] - 2 * normal[0] * dot;
      out[1] = vector[1] - 2 * normal[1] * dot;
    };
    /**
     * Get the intersection point between two line segments.
     * @static
     * @method getLineSegmentsIntersection
     * @param  {Array} out
     * @param  {Array} p0
     * @param  {Array} p1
     * @param  {Array} p2
     * @param  {Array} p3
     * @return {boolean} True if there was an intersection, otherwise false.
     */


    vec2$p.getLineSegmentsIntersection = function (out, p0, p1, p2, p3) {
      var t = vec2$p.getLineSegmentsIntersectionFraction(p0, p1, p2, p3);

      if (t < 0) {
        return false;
      } else {
        out[0] = p0[0] + t * (p1[0] - p0[0]);
        out[1] = p0[1] + t * (p1[1] - p0[1]);
        return true;
      }
    };
    /**
     * Get the intersection fraction between two line segments. If successful, the intersection is at p0 + t * (p1 - p0)
     * @static
     * @method getLineSegmentsIntersectionFraction
     * @param  {Array} p0
     * @param  {Array} p1
     * @param  {Array} p2
     * @param  {Array} p3
     * @return {number} A number between 0 and 1 if there was an intersection, otherwise -1.
     */


    vec2$p.getLineSegmentsIntersectionFraction = function (p0, p1, p2, p3) {
      var s1_x = p1[0] - p0[0];
      var s1_y = p1[1] - p0[1];
      var s2_x = p3[0] - p2[0];
      var s2_y = p3[1] - p2[1];
      var s, t;
      s = (-s1_y * (p0[0] - p2[0]) + s1_x * (p0[1] - p2[1])) / (-s2_x * s1_y + s1_x * s2_y);
      t = (s2_x * (p0[1] - p2[1]) - s2_y * (p0[0] - p2[0])) / (-s2_x * s1_y + s1_x * s2_y);

      if (s >= 0 && s <= 1 && t >= 0 && t <= 1) {
        // Collision detected
        return t;
      }

      return -1; // No collision
    };

    var vec2$o = vec2$q.exports;

    var AABB_1 = AABB$2;
    /**
     * Axis aligned bounding box class.
     * @class AABB
     * @constructor
     * @param {Object}  [options]
     * @param {Array}   [options.upperBound]
     * @param {Array}   [options.lowerBound]
     * @example
     *     var aabb = new AABB({
     *         upperBound: [1, 1],
     *         lowerBound: [-1, -1]
     *     });
     */

    function AABB$2(options) {
      options = options || {};
      /**
       * The lower bound of the bounding box.
       * @property lowerBound
       * @type {Array}
       */

      this.lowerBound = options.lowerBound ? vec2$o.clone(options.lowerBound) : vec2$o.create();
      /**
       * The upper bound of the bounding box.
       * @property upperBound
       * @type {Array}
       */

      this.upperBound = options.upperBound ? vec2$o.clone(options.upperBound) : vec2$o.create();
    }

    var tmp$2 = vec2$o.create();
    /**
     * Set the AABB bounds from a set of points, transformed by the given position and angle.
     * @method setFromPoints
     * @param {Array} points An array of vec2's.
     * @param {Array} position
     * @param {number} [angle=0]
     * @param {number} [skinSize=0] Some margin to be added to the AABB.
     */

    AABB$2.prototype.setFromPoints = function (points, position, angle, skinSize) {
      var l = this.lowerBound,
          u = this.upperBound;
      angle = angle || 0; // Set to the first point

      if (angle !== 0) {
        vec2$o.rotate(l, points[0], angle);
      } else {
        vec2$o.copy(l, points[0]);
      }

      vec2$o.copy(u, l); // Compute cosines and sines just once

      var cosAngle = Math.cos(angle),
          sinAngle = Math.sin(angle);

      for (var i = 1; i < points.length; i++) {
        var p = points[i];

        if (angle !== 0) {
          var x = p[0],
              y = p[1];
          tmp$2[0] = cosAngle * x - sinAngle * y;
          tmp$2[1] = sinAngle * x + cosAngle * y;
          p = tmp$2;
        }

        for (var j = 0; j < 2; j++) {
          if (p[j] > u[j]) {
            u[j] = p[j];
          }

          if (p[j] < l[j]) {
            l[j] = p[j];
          }
        }
      } // Add offset


      if (position) {
        vec2$o.add(l, l, position);
        vec2$o.add(u, u, position);
      }

      if (skinSize) {
        l[0] -= skinSize;
        l[1] -= skinSize;
        u[0] += skinSize;
        u[1] += skinSize;
      }
    };
    /**
     * Copy bounds from an AABB to this AABB
     * @method copy
     * @param  {AABB} aabb
     */


    AABB$2.prototype.copy = function (aabb) {
      vec2$o.copy(this.lowerBound, aabb.lowerBound);
      vec2$o.copy(this.upperBound, aabb.upperBound);
    };
    /**
     * Extend this AABB so that it covers the given AABB too.
     * @method extend
     * @param  {AABB} aabb
     */


    AABB$2.prototype.extend = function (aabb) {
      var lower = this.lowerBound,
          upper = this.upperBound; // Loop over x and y

      var i = 2;

      while (i--) {
        // Extend lower bound
        var l = aabb.lowerBound[i];

        if (lower[i] > l) {
          lower[i] = l;
        } // Upper


        var u = aabb.upperBound[i];

        if (upper[i] < u) {
          upper[i] = u;
        }
      }
    };
    /**
     * Returns true if the given AABB overlaps this AABB.
     * @method overlaps
     * @param  {AABB} aabb
     * @return {Boolean}
     */


    AABB$2.prototype.overlaps = function (aabb) {
      var l1 = this.lowerBound,
          u1 = this.upperBound,
          l2 = aabb.lowerBound,
          u2 = aabb.upperBound; //      l2        u2
      //      |---------|
      // |--------|
      // l1       u1

      return (l2[0] <= u1[0] && u1[0] <= u2[0] || l1[0] <= u2[0] && u2[0] <= u1[0]) && (l2[1] <= u1[1] && u1[1] <= u2[1] || l1[1] <= u2[1] && u2[1] <= u1[1]);
    };
    /**
     * @method containsPoint
     * @param  {Array} point
     * @return {boolean}
     */


    AABB$2.prototype.containsPoint = function (point) {
      var l = this.lowerBound,
          u = this.upperBound;
      return l[0] <= point[0] && point[0] <= u[0] && l[1] <= point[1] && point[1] <= u[1];
    };
    /**
     * Check if the AABB is hit by a ray.
     * @method overlapsRay
     * @param  {Ray} ray
     * @return {number} -1 if no hit, a number between 0 and 1 if hit, indicating the position between the "from" and "to" points.
     * @example
     *     var aabb = new AABB({
     *         upperBound: [1, 1],
     *         lowerBound: [-1, -1]
     *     });
     *     var ray = new Ray({
     *         from: [-2, 0],
     *         to: [0, 0]
     *     });
     *     var fraction = aabb.overlapsRay(ray); // fraction == 0.5
     */


    AABB$2.prototype.overlapsRay = function (ray) {
      // ray.direction is unit direction vector of ray
      var dirFracX = 1 / ray.direction[0];
      var dirFracY = 1 / ray.direction[1]; // this.lowerBound is the corner of AABB with minimal coordinates - left bottom, rt is maximal corner

      var from = ray.from;
      var lowerBound = this.lowerBound;
      var upperBound = this.upperBound;
      var t1 = (lowerBound[0] - from[0]) * dirFracX;
      var t2 = (upperBound[0] - from[0]) * dirFracX;
      var t3 = (lowerBound[1] - from[1]) * dirFracY;
      var t4 = (upperBound[1] - from[1]) * dirFracY;
      var tmin = Math.max(Math.max(Math.min(t1, t2), Math.min(t3, t4)));
      var tmax = Math.min(Math.min(Math.max(t1, t2), Math.max(t3, t4))); // if tmax < 0, ray (line) is intersecting AABB, but whole AABB is behing us

      if (tmax < 0) {
        //t = tmax;
        return -1;
      } // if tmin > tmax, ray doesn't intersect AABB


      if (tmin > tmax) {
        //t = tmax;
        return -1;
      }

      return tmin / ray.length;
    };

    var Equation_1 = Equation$a;

    var vec2$n = vec2$q.exports,
        scale$1 = vec2$n.scale,
        multiply = vec2$n.multiply,
        createVec2$1 = vec2$n.create,
        Utils$5 = Utils_1;
    /**
     * Base class for constraint equations.
     * @class Equation
     * @constructor
     * @param {Body} bodyA First body participating in the equation
     * @param {Body} bodyB Second body participating in the equation
     * @param {number} minForce Minimum force to apply. Default: -Number.MAX_VALUE
     * @param {number} maxForce Maximum force to apply. Default: Number.MAX_VALUE
     */


    function Equation$a(bodyA, bodyB, minForce, maxForce) {
      /**
       * Minimum force to apply when solving.
       * @property minForce
       * @type {Number}
       */
      this.minForce = minForce === undefined ? -Number.MAX_VALUE : minForce;
      /**
       * Max force to apply when solving.
       * @property maxForce
       * @type {Number}
       */

      this.maxForce = maxForce === undefined ? Number.MAX_VALUE : maxForce;
      /**
       * Cap the constraint violation (G*q) to this value.
       * @property maxBias
       * @type {Number}
       */

      this.maxBias = Number.MAX_VALUE;
      /**
       * First body participating in the constraint
       * @property bodyA
       * @type {Body}
       */

      this.bodyA = bodyA;
      /**
       * Second body participating in the constraint
       * @property bodyB
       * @type {Body}
       */

      this.bodyB = bodyB;
      /**
       * The stiffness of this equation. Typically chosen to a large number (~1e7), but can be chosen somewhat freely to get a stable simulation.
       * @property stiffness
       * @type {Number}
       */

      this.stiffness = Equation$a.DEFAULT_STIFFNESS;
      /**
       * The number of time steps needed to stabilize the constraint equation. Typically between 3 and 5 time steps.
       * @property relaxation
       * @type {Number}
       */

      this.relaxation = Equation$a.DEFAULT_RELAXATION;
      /**
       * The Jacobian entry of this equation. 6 numbers, 3 per body (x,y,angle).
       * @property G
       * @type {Array}
       */

      this.G = new Utils$5.ARRAY_TYPE(6);

      for (var i = 0; i < 6; i++) {
        this.G[i] = 0;
      }

      this.offset = 0;
      this.a = 0;
      this.b = 0;
      this.epsilon = 0;
      this.timeStep = 1 / 60;
      /**
       * Indicates if stiffness or relaxation was changed.
       * @property {Boolean} needsUpdate
       */

      this.needsUpdate = true;
      /**
       * The resulting constraint multiplier from the last solve. This is mostly equivalent to the force produced by the constraint.
       * @property multiplier
       * @type {Number}
       */

      this.multiplier = 0;
      /**
       * Relative velocity.
       * @property {Number} relativeVelocity
       */

      this.relativeVelocity = 0;
      /**
       * Whether this equation is enabled or not. If true, it will be added to the solver.
       * @property {Boolean} enabled
       */

      this.enabled = true; // Temp stuff

      this.lambda = this.B = this.invC = this.minForceDt = this.maxForceDt = 0;
      this.index = -1;
    }
    /**
     * The default stiffness when creating a new Equation.
     * @static
     * @property {Number} DEFAULT_STIFFNESS
     * @default 1e6
     */


    Equation$a.DEFAULT_STIFFNESS = 1e6;
    /**
     * The default relaxation when creating a new Equation.
     * @static
     * @property {Number} DEFAULT_RELAXATION
     * @default 4
     */

    Equation$a.DEFAULT_RELAXATION = 4;
    var qi = createVec2$1(),
        qj = createVec2$1(),
        iMfi = createVec2$1(),
        iMfj = createVec2$1();
    Equation$a.prototype = {
      /**
       * Compute SPOOK parameters .a, .b and .epsilon according to the current parameters. See equations 9, 10 and 11 in the <a href="http://www8.cs.umu.se/kurser/5DV058/VT09/lectures/spooknotes.pdf">SPOOK notes</a>.
       * @method update
       */
      update: function () {
        var k = this.stiffness,
            d = this.relaxation,
            h = this.timeStep;
        this.a = 4 / (h * (1 + 4 * d));
        this.b = 4 * d / (1 + 4 * d);
        this.epsilon = 4 / (h * h * k * (1 + 4 * d));
        this.needsUpdate = false;
      },

      /**
       * Multiply a jacobian entry with corresponding positions or velocities
       * @method gmult
       * @return {Number}
       */
      gmult: function (G, vi, wi, vj, wj) {
        return G[0] * vi[0] + G[1] * vi[1] + G[2] * wi + G[3] * vj[0] + G[4] * vj[1] + G[5] * wj;
      },

      /**
       * Computes the RHS of the SPOOK equation
       * @method computeB
       * @return {Number}
       */
      computeB: function (a, b, h) {
        var GW = this.computeGW();
        var Gq = this.computeGq();
        var maxBias = this.maxBias;

        if (Math.abs(Gq) > maxBias) {
          Gq = Gq > 0 ? maxBias : -maxBias;
        }

        var GiMf = this.computeGiMf();
        var B = -Gq * a - GW * b - GiMf * h;
        return B;
      },

      /**
       * Computes G\*q, where q are the generalized body coordinates
       * @method computeGq
       * @return {Number}
       */
      computeGq: function () {
        var G = this.G,
            bi = this.bodyA,
            bj = this.bodyB,
            ai = bi.angle,
            aj = bj.angle;
        return this.gmult(G, qi, ai, qj, aj) + this.offset;
      },

      /**
       * Computes G\*W, where W are the body velocities
       * @method computeGW
       * @return {Number}
       */
      computeGW: function () {
        var G = this.G,
            bi = this.bodyA,
            bj = this.bodyB,
            vi = bi.velocity,
            vj = bj.velocity,
            wi = bi.angularVelocity,
            wj = bj.angularVelocity;
        return this.gmult(G, vi, wi, vj, wj) + this.relativeVelocity;
      },

      /**
       * Computes G\*Wlambda, where W are the body velocities
       * @method computeGWlambda
       * @return {Number}
       */
      computeGWlambda: function () {
        var G = this.G,
            bi = this.bodyA,
            bj = this.bodyB,
            vi = bi.vlambda,
            vj = bj.vlambda,
            wi = bi.wlambda,
            wj = bj.wlambda;
        return this.gmult(G, vi, wi, vj, wj);
      },

      /**
       * Computes G\*inv(M)\*f, where M is the mass matrix with diagonal blocks for each body, and f are the forces on the bodies.
       * @method computeGiMf
       * @return {Number}
       */
      computeGiMf: function () {
        var bi = this.bodyA,
            bj = this.bodyB,
            fi = bi.force,
            ti = bi.angularForce,
            fj = bj.force,
            tj = bj.angularForce,
            invMassi = bi.invMassSolve,
            invMassj = bj.invMassSolve,
            invIi = bi.invInertiaSolve,
            invIj = bj.invInertiaSolve,
            G = this.G;
        scale$1(iMfi, fi, invMassi);
        multiply(iMfi, bi.massMultiplier, iMfi);
        scale$1(iMfj, fj, invMassj);
        multiply(iMfj, bj.massMultiplier, iMfj);
        return this.gmult(G, iMfi, ti * invIi, iMfj, tj * invIj);
      },

      /**
       * Computes G\*inv(M)\*G'
       * @method computeGiMGt
       * @return {Number}
       */
      computeGiMGt: function () {
        var bi = this.bodyA,
            bj = this.bodyB,
            invMassi = bi.invMassSolve,
            invMassj = bj.invMassSolve,
            invIi = bi.invInertiaSolve,
            invIj = bj.invInertiaSolve,
            G = this.G;
        return G[0] * G[0] * invMassi * bi.massMultiplier[0] + G[1] * G[1] * invMassi * bi.massMultiplier[1] + G[2] * G[2] * invIi + G[3] * G[3] * invMassj * bj.massMultiplier[0] + G[4] * G[4] * invMassj * bj.massMultiplier[1] + G[5] * G[5] * invIj;
      },

      /**
       * Add constraint velocity to the bodies.
       * @method addToWlambda
       * @param {Number} deltalambda
       */
      addToWlambda: function (deltalambda) {
        var bi = this.bodyA,
            bj = this.bodyB,
            invMassi = bi.invMassSolve,
            invMassj = bj.invMassSolve,
            invIi = bi.invInertiaSolve,
            invIj = bj.invInertiaSolve,
            G = this.G; // v_lambda = G * inv(M) * delta_lambda

        addToVLambda(bi.vlambda, G[0], G[1], invMassi, deltalambda, bi.massMultiplier);
        bi.wlambda += invIi * G[2] * deltalambda;
        addToVLambda(bj.vlambda, G[3], G[4], invMassj, deltalambda, bj.massMultiplier);
        bj.wlambda += invIj * G[5] * deltalambda;
      },

      /**
       * Compute the denominator part of the SPOOK equation: C = G\*inv(M)\*G' + eps
       * @method computeInvC
       * @param  {Number} eps
       * @return {Number}
       */
      computeInvC: function (eps) {
        var invC = 1 / (this.computeGiMGt() + eps);
        return invC;
      }
    };

    function addToVLambda(vlambda, Gx, Gy, invMass, deltalambda, massMultiplier) {
      vlambda[0] += Gx * invMass * deltalambda * massMultiplier[0];
      vlambda[1] += Gy * invMass * deltalambda * massMultiplier[1];
    }

    var Equation$9 = Equation_1;

    var AngleLockEquation_1 = AngleLockEquation$1;
    /**
     * Locks the relative angle between two bodies. The constraint tries to keep the dot product between two vectors, local in each body, to zero. The local angle in body i is a parameter.
     *
     * @class AngleLockEquation
     * @constructor
     * @extends Equation
     * @param {Body} bodyA
     * @param {Body} bodyB
     * @param {Object} [options]
     