LayaAir是核心库仅100K左右的新一代HTML5引擎，LayaAir支持动画、UI、粒子、骨骼、物理等系统

(function (exports, Laya) { 'use strict'; class MathUtils3D { constructor() { } static isZero(v) { return Math.abs(v) < MathUtils3D.zeroTolerance; } static nearEqual(n1, n2) { if (MathUtils3D.isZero(n1 - n2)) return true; return false; } static fastInvSqrt(value) { if (MathUtils3D.isZero(value)) return value; return 1.0 / Math.sqrt(value); } } MathUtils3D.zeroTolerance = 1e-6; MathUtils3D.MaxValue = 3.40282347e+38; MathUtils3D.MinValue = -3.40282347e+38; MathUtils3D.Deg2Rad = Math.PI / 180; class Vector2 { constructor(x = 0, y = 0) { this.x = x; this.y = y; } setValue(x, y) { this.x = x; this.y = y; } static scale(a, b, out) { out.x = a.x * b; out.y = a.y * b; } fromArray(array, offset = 0) { this.x = array[offset + 0]; this.y = array[offset + 1]; } toArray(array, offset = 0) { array[offset + 0] = this.x; array[offset + 1] = this.y; } cloneTo(destObject) { var destVector2 = destObject; destVector2.x = this.x; destVector2.y = this.y; } static dot(a, b) { return (a.x * b.x) + (a.y * b.y); } static normalize(s, out) { var x = s.x, y = s.y; var len = x * x + y * y; if (len > 0) { len = 1 / Math.sqrt(len); out.x = x * len; out.y = y * len; } } static scalarLength(a) { var x = a.x, y = a.y; return Math.sqrt(x * x + y * y); } clone() { var destVector2 = new Vector2(); this.cloneTo(destVector2); return destVector2; } forNativeElement(nativeElements = null) { if (nativeElements) { this.elements = nativeElements; this.elements[0] = this.x; this.elements[1] = this.y; } else { this.elements = new Float32Array([this.x, this.y]); } Vector2.rewriteNumProperty(this, "x", 0); Vector2.rewriteNumProperty(this, "y", 1); } static rewriteNumProperty(proto, name, index) { Object["defineProperty"](proto, name, { "get": function () { return this.elements[index]; }, "set": function (v) { this.elements[index] = v; } }); } } Vector2.ZERO = new Vector2(0.0, 0.0); Vector2.ONE = new Vector2(1.0, 1.0); class Vector4 { constructor(x = 0, y = 0, z = 0, w = 0) { this.x = x; this.y = y; this.z = z; this.w = w; } setValue(x, y, z, w) { this.x = x; this.y = y; this.z = z; this.w = w; } fromArray(array, offset = 0) { this.x = array[offset + 0]; this.y = array[offset + 1]; this.z = array[offset + 2]; this.w = array[offset + 3]; } toArray(array, offset = 0) { array[offset + 0] = this.x; array[offset + 1] = this.y; array[offset + 2] = this.z; array[offset + 3] = this.w; } cloneTo(destObject) { var destVector4 = destObject; destVector4.x = this.x; destVector4.y = this.y; destVector4.z = this.z; destVector4.w = this.w; } clone() { var destVector4 = new Vector4(); this.cloneTo(destVector4); return destVector4; } static lerp(a, b, t, out) { var ax = a.x, ay = a.y, az = a.z, aw = a.w; out.x = ax + t * (b.x - ax); out.y = ay + t * (b.y - ay); out.z = az + t * (b.z - az); out.w = aw + t * (b.w - aw); } static transformByM4x4(vector4, m4x4, out) { var vx = vector4.x; var vy = vector4.y; var vz = vector4.z; var vw = vector4.w; var me = m4x4.elements; out.x = vx * me[0] + vy * me[4] + vz * me[8] + vw * me[12]; out.y = vx * me[1] + vy * me[5] + vz * me[9] + vw * me[13]; out.z = vx * me[2] + vy * me[6] + vz * me[10] + vw * me[14]; out.w = vx * me[3] + vy * me[7] + vz * me[11] + vw * me[15]; } static equals(a, b) { return MathUtils3D.nearEqual(Math.abs(a.x), Math.abs(b.x)) && MathUtils3D.nearEqual(Math.abs(a.y), Math.abs(b.y)) && MathUtils3D.nearEqual(Math.abs(a.z), Math.abs(b.z)) && MathUtils3D.nearEqual(Math.abs(a.w), Math.abs(b.w)); } length() { return Math.sqrt(this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w); } lengthSquared() { return this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w; } static normalize(s, out) { var len = s.length(); if (len > 0) { var inverse = 1.0 / len; out.x = s.x * inverse; out.y = s.y * inverse; out.z = s.z * inverse; out.w = s.w * inverse; } } static add(a, b, out) { out.x = a.x + b.x; out.y = a.y + b.y; out.z = a.z + b.z; out.w = a.w + b.w; } static subtract(a, b, out) { out.x = a.x - b.x; out.y = a.y - b.y; out.z = a.z - b.z; out.w = a.w - b.w; } static multiply(a, b, out) { out.x = a.x * b.x; out.y = a.y * b.y; out.z = a.z * b.z; out.w = a.w * b.w; } static scale(a, b, out) { out.x = a.x * b; out.y = a.y * b; out.z = a.z * b; out.w = a.w * b; } static Clamp(value, min, max, out) { var x = value.x; var y = value.y; var z = value.z; var w = value.w; var mineX = min.x; var mineY = min.y; var mineZ = min.z; var mineW = min.w; var maxeX = max.x; var maxeY = max.y; var maxeZ = max.z; var maxeW = max.w; x = (x > maxeX) ? maxeX : x; x = (x < mineX) ? mineX : x; y = (y > maxeY) ? maxeY : y; y = (y < mineY) ? mineY : y; z = (z > maxeZ) ? maxeZ : z; z = (z < mineZ) ? mineZ : z; w = (w > maxeW) ? maxeW : w; w = (w < mineW) ? mineW : w; out.x = x; out.y = y; out.z = z; out.w = w; } static distanceSquared(value1, value2) { var x = value1.x - value2.x; var y = value1.y - value2.y; var z = value1.z - value2.z; var w = value1.w - value2.w; return (x * x) + (y * y) + (z * z) + (w * w); } static distance(value1, value2) { var x = value1.x - value2.x; var y = value1.y - value2.y; var z = value1.z - value2.z; var w = value1.w - value2.w; return Math.sqrt((x * x) + (y * y) + (z * z) + (w * w)); } static dot(a, b) { return (a.x * b.x) + (a.y * b.y) + (a.z * b.z) + (a.w * b.w); } static min(a, b, out) { out.x = Math.min(a.x, b.x); out.y = Math.min(a.y, b.y); out.z = Math.min(a.z, b.z); out.w = Math.min(a.w, b.w); } static max(a, b, out) { out.x = Math.max(a.x, b.x); out.y = Math.max(a.y, b.y); out.z = Math.max(a.z, b.z); out.w = Math.max(a.w, b.w); } forNativeElement(nativeElements = null) { if (nativeElements) { this.elements = nativeElements; this.elements[0] = this.x; this.elements[1] = this.y; this.elements[2] = this.z; this.elements[3] = this.w;