html5教程-BabylonJS文件格式---基于WebGL的H5 3D游戏引擎_html5

html5

html5 HTML/Xhtml CSS XML/XSLT Dreamweaver教程 Frontpage教程心得技巧

上一篇: html5教程-【BootStrap】陌生=》... 下一篇:html5教程-HTML的渲染过程

html5教程-BabylonJS文件格式---基于WebGL的H5 3D游戏引擎

发布时间：2018-12-15 发布网站：脚本宝典

脚本宝典收集整理的这篇文章主要介绍了html5教程-BabylonJS文件格式---基于WebGL的H5 3D游戏引擎，脚本宝典觉得挺不错的，现在分享给大家，也给大家做个参考。

小宝典致力于为广大程序猿（媛）提供高品质的代码服务，请大家多多光顾小站，小宝典在此谢过。

Babylon.js 使用json文件格式来描述场景.

你可以在这儿找到完整的加载器代码:
https://gIThub .COM/BabylonJS/Babylon.js/blob/master/src/Loading/Plugins/babylon.babylonFileLoader.js

基础类型

.babylon 文件使用下面的约定来定义基础类型:

Vector3: 一个含有3个浮点数([x, y, z])的数组. 例子: [1.1, 2.2, 3.3] Vector4: 一个含有4个浮点数([x, y, z, w])的数组. 例子: [1.1, 2.2, 3.3, 4.4] Color3: 一个含有3个浮点数 ([r, g, b])且每个数的值大小在0和1间的数组. 例子: [0.2, 0.3, 0.5] Matrix: 行优先(先按行存储)的含有16个浮点数的数组 Boolean: 真或假

全局结构体

.babylon文件里的全局结构体是下面这样的:

 {     "autoClear": boolean,     "clearColor": color3,     "ambientColor": color3,     "gravity": vector3 (通常是[0,-9,0]),     "cameras": 相机数组 (见下面),     "activeCamera_": string,     "lights": 光源数组(见下面),     "MATErials": 材质数组 (见下面),     "geometries": {...} (见下面),     ";meshes": 网格数组 (见下面),     "multiMaterials": 多材质数组(见下面),     "shadowGenerators":  阴影生成器数组 (见下面),     "skeletons": 骨架数组 (见下面),     "particleSystems": 例子系统弄个数组 (见下面),     "lensFlareSystems": 镜头光晕数组 (见下面),     "actions": 动作数组 (见下面),     "sounds": 音效数组 (见下面),     "workerCollisions": boolean,     "collisionsEnabled": boolean,     "physicsEnabled": boolean,     "physicsGravity": vector3 (默认是[0,-9.81,0]),     "physicsEngine": string ("oimo" 或 "cannon", 引擎默认为(oimo),     "animations": 动画数组 (见下面，可以省略),     "autoAnimate": boolean,     "autoAnimateFrom": int,     "autoAnimateTo": int,     "autoAnimateLoop": boolean (可以省略),     "autoAnimateSPEed": number (可以省略) }

相机

一个相机通过如下JSON格式定义:

 {     "name": string,     "id": string,     "type": string,     "tags": string,     "parentId": string,     "lockedTargetId": string,     "position": vector3,     "target": vector3,     "alpha": float, // 仅仅支持ArcRotateCamera 和 AnaglyphArcRotateCamera     "beta": float, // 仅仅支持 ArcRotateCamera 和 AnaglyphArcRotateCamera     "radius": float, // 仅仅支持 ArcRotateCamera, FollowCamera 和 AnaglyphArcRotateCamera     "eye_space": float, // 仅仅支持 AnaglyphFreeCamera 和 AnaglyphArcRotateCamera     "heightOffset": float, // 仅仅支持 FollowCamera     "rotationOffset": float, // 仅仅支持 FollowCamera     "cameraRigMode": int (可以忽略),     "fov": float (弧度单位),     "minZ": float,     "maxZ": float,     "speed": float,     "inertia": float (在0和1间),     "checkCollisions": boolean,     "applyGravity": boolean,     "ellipsoid": vector3,     "animations": Animations数组 (见下面，可以忽略),     "autoAnimate": boolean,     "autoAnimateFrom": int,     "autoAnimateTo": int,     "autoAnimateLoop": boolean (可以忽略),     "autoAnimateSpeed": number (可以忽略),     "inputmgr" : 相机的输入映射(可以忽略, 见下面) }

相机的输入映射

这是个对象，它字面上用输入类型作为键，同时用输入设定作为存储值对象。每个输入类型都有其自身的属性.

光源

光源通过如下的JSON格式定义:

 {     "name": string,     "id": string,     "tags": string,     "type": int (0表示点光，1表示方向光, 2表示聚光，3表示球面光),     "position": vector3,     "direction": vector3,     "angle": float (用于点光源),     "exponent": float (用于点光源),     "groundColor": color3 (用于球面光光源),     "intensity": float,     "range": float,     "diffuse": color3,     "specular": color3,     "excludedMeshesIds": array of string,     "includedOnlyMeshesIds": array of string,     "animations": array of Animations (见下面，可以忽略),     "autoAnimate": boolean,     "autoAnimateFrom": int,     "autoAnimateTo": int,     "autoAnimateLoop": boolean (可以忽略),     "autoAnimateSpeed": number (可以忽略) }

材质

一个材质通过如下JSON格式定义:

 {     "name": string,     "id": string,     "tags": string,     "disableDepthWrite": boolean (可以忽略),     "ambient": color3,     "diffuse": color3,     "specular": color3,     "specularPower": float,     "emissive": color3,     "alpha": float,     "backFaceCulling": boolean,     "wireframe": boolean,     "diffuseTexture": Texture (见下面),     "ambientTexture": Texture (见下面),     "opacityTexture": Texture (见下面,     "reflectionTexture": Texture (见下面),     "refractionTexture": Texture (见下面),     "indexOfRefraction": float,     "emissiveTexture": Texture (见下面),     "specularTexture": Texture (见下面),     "bumpTexture": Texture (见下面),     "lightmapTexture": Texture (见下面),     "useLightmapAsShadowmap": boolean,     "checkReadyOnlyOnce": boolean     "useReflectionFresnelFromSpecular": boolean (可以忽略),     "useEmissiveAsIllumination": boolean (可以忽略),     "diffuseFresnelParameters": 菲涅耳参数 (见下面),     "opacityFresnelParameters": 菲涅耳参数 (见下面),     "reflectionFresnelParameters": 菲涅耳参数 (见下面),     "refractionFresnelParameters": 菲涅耳参数 (见下面),     "emissiveFresnelParameters": 菲涅耳参数 (见下面) }

菲涅耳参数

菲涅耳参数通过如下的JSON格式定义:

 {     "isEnabled": boolean,     "leftColor": color3,     "rightColor": color3,     "bias": float,     "power": float }

纹理

纹理通过如下的JSON个格式定义:

 {     "name": string (文件名),     "level": float (在0和1间),     "hasAlpha": boolean,     "getAlphaFromRGB": boolean,     "coordinatESMode": int (0 = 显式, 1 = 球, 2 = 平面, 3 = 立方, 4 = 投影, 5 = 天空盒),     "uOffset": float,     "vOffset": float,     "uScale": float,     "vScale": float,     "uAng": float,     "vAng": float,     "wAng": float,     "wrapU": boolean,     "wrapv": boolean,     "coordinatesIndex": int,     "animations": array of Animations (见下面，可以忽略),     "base64String": string (可以忽略) }

多纹理

多纹理通过如下JSON格式定义:

 {     "name": string,     "id": string,     "tags": string,     "materials": string数组 (都是子纹理的ID) }

几何体

几何体的结构如下:

 {     "boxes": array of Boxes (见下面),     "spheres": array of Spheres (见下面),     "cylinders": array of Cylinders (见下面),     "toruses": array of Toruses (见下面),     "grounds": array of Grounds (见下面),     "planes": array of Planes (见下面),     "torusKnots": array of TorusKnots (见下面),     "vertexData": array of VertexData (见下面) }

盒子

盒子通过如下的JSON格式定义:

 {     "id": string,     "size": float,     "canBeRegenerated": bool,     "tags": string }

球体

球体通过如下的JSON格式定义:

 {     "id": string,     "segments": float,     "diameter": float,     "canBeRegenerated": bool,     "tags": string }

圆柱体

圆柱体通过如下的JSON格式定义:

 {     "id": string,     "height": float,     "diameterTop": float,     "diameterBottom": float,     "tessellation": float,     "subpisions": integer,     "canBeRegenerated": bool,     "tags": string }

环形体

环型体通过如下的JSON定义:

 {     "id": string,     "diameter": float,     "thickness": float,     "tessellation": float,     "canBeRegenerated": bool,     "tags": string }

地面

地面通过如下的JSON格式定义:

 {     "id": string,     "width": float,     "height": float,     "subpisions": float,     "canBeRegenerated": bool,     "tags": string }

平面

平面通过如下的JSON格式定义:

 {     "id": string,     "size": float,     "canBeRegenerated": bool,     "tags": string }

环形节

环形节通过如下的JSON格式定义:

 {     "id": string,     "radius": float,     "tube": float,     "radialSegments": float,     "tubularSegments": float,     "p": float,     "q": float,     "canBeRegenerated": bool,     "tags": string }

顶点数据

顶点数据通过如下的JSON格式定义:

 {     "id": string,     "updatable": bool,     "positions": array of floats (每顶点3个数值),     "normals": array of floats (每顶点3个数值),     "uvs": array of floats (每顶点2个数值),     "uv2s": array of floats (每顶点2个数值) 第2个纹理坐标 (可以忽略),     "uv3s": array of floats (每顶点2个数值) 第3个纹理坐标 (可以忽略),     "uv4s": array of floats (每顶点2个数值) 第4个纹理坐标 (可以忽略),     "uv5s": array of floats (每顶点2个数值) 第5个纹理坐标 (可以忽略),     "uv6s": array of floats (每顶点2个数值) 第6个纹理坐标 (可以忽略),     "colors": array of floats (每顶点3个数值)每个顶点的颜色 (可以忽略),     "matricesIndices": array of ints (每顶点4个数值) 骨骼数据在矩阵数组里的索引 (可以忽略),     "matricesWeights": array of floats (每顶点4个数值) 骨骼数据在矩阵数组里的权重  (可以忽略),     "indices": array of ints (每面点3个数值),     "tags": string }

实例

实例通过如下的JSON格式定义:

 {     "name": string,     "tags": string,     "position": vector3,     "rotation": vector3 (可以忽略),     "rotationQuaternion": vector4 (可以忽略),     "scaling": vector3 }

网格

网格通过如下的JSON格式定义:

 {     "name": string,     "id": string,     "tags": string,     "parentId": string,     "materialId": string,     "geometryId": string (可以忽略),     "position": vector3,     "rotation": vector3 (可以忽略),     "rotationQuaternion": vector4 (可以忽略),     "scaling": vector3,     "pivotMatrix": matrix,     "freezeWorldMatrix": boolean (可以忽略),     "infiniteDistance": boolean,     "showBoundingBox": boolean,     "showSubMeshesBoundingBox": boolean,     "isVisible": boolean,     "isEnabled": boolean,     "pickable": boolean,     "applyFog": boolean,     "alphaindex": int,     "checkCollisions": boolean,     "billboardMode": int (0 = None, 1 = X, 2 = Y, 4 = Z, 7 = All),     "receiveShadows": boolean,     "physicsImpostor": int (0 = None, 1 = Box, 2 = Sphere),     "physicsMass": float,     "physicsFriction": float,     "physicsRestitution": float,     "positions": array of floats (每顶点3个数值),     "normals": array of floats (每顶点3个数值),     "uvs": array of floats (每顶点2个数值),     "uvs2": array of floats (每顶点2个数值)  第2个纹理坐标(可以忽略),     "uv3s": array of floats (每顶点2个数值)  第3个纹理坐标 (可以忽略),     "uv4s": array of floats (每顶点2个数值)  第5个纹理坐标 (可以忽略),     "uv5s": array of floats (每顶点2个数值)  第6个纹理坐标 (可以忽略),     "uv6s": array of floats (每顶点2个数值)  第7个纹理坐标 (可以忽略),     "colors": array of floats (每顶点4个数值) 每个顶点的颜色 (可以忽略),     "hasVertexAlpha": 指明颜色是否包含透明信息的值(可以忽略),     "matricesIndices": array of ints (每顶点4个数值)  骨骼数据在矩阵数组里的索引  (可以忽略),     "matricesWeights": array of floats (每顶点4个数值)  骨骼数据在矩阵数组里的权重 (可以忽略),     "indices": array of ints (每面3个数值,     "subMeshes": array of SubMeshes (见下面),     "animations": array of Animations (见下面, 可以忽略),     "autoAnimate": boolean,     "autoAnimateFrom": int,     "autoAnimateTo": int,     "autoAnimateLoop": boolean,     "autoAnimateSpeed": number (可以忽略)     "instances": array of Instances (见下面, 可以忽略),     "actions": array of actions (见下面) }

请注意，父网格的描述必须在其子节点出现之前。

子网格

子网格通过如下的JSON格式定义:

 {     "materialIndex": int,     "verticesStart": int,     "verticesCount": int,     "indexStart": int,     "indexCount": int }

动画

动画通过如下的JSON格式定义:

 {     "dataType": int (0 = 浮点, 1 = 3元量, 2 = 4元量, 3 = 矩阵),     "framePerSecond": int,     "loopBehavior": int (0 = 相对, 1 = 周期, 2 = 常量),     "name": string,     "PRoperty": string,     "keys": array of AnimationKeys (见下面),     "autoAnimate": boolean,     "autoAnimateFrom": int,     "autoAnimateTo": int,     "autoAnimateLoop": boolean }

动画关键帧

动画关键帧通过如下的JSON格式定义:

 {     "frame": int,     "values": array of float (取决于播放的值) }

阴影生成器

阴影生成器通过如下的JSON格式定义:

 {     "useBlurVARianceShadowMap": boolean,     "useVarianceShadowMap": boolean,     "usePoissonSampling": boolean,     "mapSize": int (在64和2048之间, 必须是2的幂),     "bias": float,     "forceBackFacesOnly": float,     "lightId": string,     "renderList": array of string (网格的ID) }

骨架

骨架通过如下的JSON格式定义:

 {     "name": string,     "id": string,     "bones": array of Bones (见下面)     "needInitialSkinMatrix": boolean }

骨骼

骨骼通过如下的JSON格式定义:

 {     "parentBoneIndex": int,     "name": string,     "matrix": matrix,     "animations": array of Animations (必须是个矩阵类型) }

粒子系统

粒子系统通过如下的JSON格式定义:

 {      "emitterId": string,      "gravity": vector3,      "direction1": vector3,      "direction2": vector3,      "minEmitBox": vector3,      "maxEmitBox": vector3,      "color1": color3,      "color2": color3,      "colorDead": color3,      "deadAlpha": float,      "emitRate": float,      "updateSpeed": float,      "targetStopFrame": int,      "minEmitPower": int,      "maxEmitPower": float,      "minLifeTime": float,      "maxLifeTime": float,      "minSize": float,      "maxSize": float,      "minAngularSpeed": float,      "maxAngularSpeed": float,      "texturename": string,      "blendMode": int,      "capacity": int,      "textureMask": color4,      "linkToEmitter": bool,     "animations": Animations数组 (见下面，可以省略),     "autoAnimate": boolean,     "autoAnimateFrom": int,     "autoAnimateTo": int,     "autoAnimateLoop": boolean (可以省略),     "autoAnimateSpeed": number (可以忽略) }

镜头光晕系统

镜头光晕系统通过如下的JSON格式定义:

 {      "emitterId": string,      "borderLimit": int,      "flares": array of LensFlares (见下面) }

镜头光晕

镜头光晕通过如下的JSON格式定义:

 {      "position": float,      "size": float,      "color": color3,      "textureName": string }

音效

音效通过如下的JSON格式定义:

 {      "name": string, (要加载的文件名)      "volume": float, (如果忽略则为1)      "autoplay": bool, (可忽略)      "loop": bool, (可忽略)      "soundTrackId": int, (可忽略)      "spatialSound": bool, (启用3维音效，可忽略)      "position": vector3, (如果忽略则为0,0,0)      "refDistance": float, (可忽略, 默认为1)      "rolloffFactor": float, (可忽略, 默认为1)      "maxDistance": float, (可忽略, 默认为100)      "distanceModel": string, (可忽略, 默认为线性的，其它值: 倒数或指数)      "panningModel": string, (可忽略, 默认为hrTF, 其它值: 等幂)      "isDirectional": bool, (启用方向椎体)      "coneInnerAngle": float, (可忽略,用来设置有向音效)      "coneouterAngle": float, (可忽略,用来设置有向音效)      "coneOuterGain": float, (可忽略,用来设置有向音效)      "connectedMeshId": string, (网格附着对象的ID)      "localDirectionToMesh": vector3 (可忽略,默认1,0,0) }

动作

动作通过如下的JSON格式定义. 动作可以包含多个子的动作.

 {     "type": number, (动作类型. 0 = 触发式, 1 = 动作, 2 = 流控制)     "name": string, (触发式或流程的动作名)     "detached": boolean, (节点是否挂载上. 如果detached === true意味着不会被计算)     "properties": array of properties, (见下面)     "children": array of Actions,     "combine": array of Actions (用于组合动画. 例如 name = "CombineAction". 可以为null) }

属性通过如下JSON格式定义. 属性值总是字符串

 {     "name": string, (属性名)     "value": string, (属性值. 例如: name = "target" 和 value = "Plane001")     "targetType": string (BabylonJS动作创建器内部使用的, 指明在哪找到"propertyPath"属性的) }

例子

这儿是个简单的.babylon文件的例子:

 {     "autoClear": true,     "clearColor": [0, 0, 0],     "ambientColor": [0, 0, 0],     "gravity": [0, -9.81, 0],     "cameras": [{         "name": "Camera",         "id": "Camera",         "position": [7.4811, 5.3437, -6.5076],         "target": [-0.3174, 0.8953, 0.3125],         "fov": 0.8576,         "minZ": 0.1,         "maxZ": 100,         "speed": 1,         "inertia": 0.9,         "checkCollisions": false,         "applyGravity": false,         "ellipsoid": [0.2, 0.9, 0.2]     }],     "activeCamera": "Camera",     "lights": [{         "name": "Sun",         "id": "Sun",         "type": 1,         "position": [0.926, 7.3608, 14.1829],         "direction": [-0.347, -0.4916, -0.7987],         "intensity": 1,         "diffuse": [1, 1, 1],         "specular": [1, 1, 1]     }],     "materials": [{         "name": "Material",         "id": "Material",         "ambient": [0.8, 0.8, 0.8],         "diffuse": [0.64, 0.64, 0.64],         "specular": [0.5, 0.5, 0.5],         "specularPower": 50,         "emissive": [0, 0, 0],         "alpha": 1,         "backFaceCulling": true,         "diffuseTexture": {             "name": "Metal1.png",             "level": 1,             "hasAlpha": 1,             "coordinatesMode": 0,             "uOffset": 0,             "vOffset": 0,             "uScale": 1,             "vScale": 1,             "uAng": 0,             "vAng": 0,             "wAng": 0,             "wrapU": true,             "wrapV": true,             "coordinatesIndex": 0         }     },     {         "name": "Material.001",         "id": "Material.001",         "ambient": [0.8, 0.8, 0.8],         "diffuse": [0.64, 0.64, 0.64],         "specular": [0.5, 0.5, 0.5],         "specularPower": 50,         "emissive": [0, 0, 0],         "alpha": 1,         "backFaceCulling": true,         "diffuseTexture": {             "name": "concrete5.png",             "level": 1,             "hasAlpha": 1,             "coordinatesMode": 0,             "uOffset": 0,             "vOffset": 0,             "uScale": 5,             "vScale": 5,             "uAng": 0,             "vAng": 0,             "wAng": 0,             "wrapU": true,             "wrapV": true,             "coordinatesIndex": 0         }     }],     "geometries": {         "boxes": [{             "id": "BoxPrimitive",             "size": 2,             "canBeRegenerated": true,             "tags": "Box Primitive Cube CanBeRegenerated"         }],         "vertexData": [{             "id": "CubeGeometry",             "updatable": false,             "positions": [ 1, -1, 1, 1, -1, -1, -1, -1, 1, 1, 1, 1, -1, 1, 1, 1, 1, -1, 1, 1, 1, 1, -1, -1, 1, -1, -1, 1, 1, -1, -1, -1, -1, -1, -1, -1, -1, 1, -1, -1, -1, 1, 1, 1, 1, 1, -1, 1, -1, 1, 1, -1, -1, -1, -1, 1, -1, 1, 1, 1, 1, 1, -1, 1, -1, -1, 1, 1, -1, -1, 1, -1, -1, 1, 1, -1, -1, 1, 1, -1, 1, -1, -1, 1, -1, 1, 1],             "normals": [0.5773, -0.5773, 0.5773, 0.5773, -0.5773, -0.5773, -0.5773, -0.5773, 0.5773, 0.5773, 0.5773, 0.5773, -0.5773, 0.5773, 0.5773, 0.5773, 0.5773, -0.5773, 0.5773, 0.5773, 0.5773, 0.5773, -0.5773, -0.5773, 0.5773, -0.5773, -0.5773, 0.5773, 0.5773, -0.5773, -0.5773, -0.5773, -0.5773, -0.5773, -0.5773, -0.5773, -0.5773, 0.5773, -0.5773, -0.5773, -0.5773, 0.5773, 0.5773, 0.5773, 0.5773, 0.5773, -0.5773, 0.5773, -0.5773, 0.5773, 0.5773, -0.5773, -0.5773, -0.5773, -0.5773, 0.5773, -0.5773, 0.5773, 0.5773, 0.5773, 0.5773, 0.5773, -0.5773, 0.5773, -0.5773, -0.5773, 0.5773, 0.5773, -0.5773, -0.5773, 0.5773, -0.5773, -0.5773, 0.5773, 0.5773, -0.5773, -0.5773, 0.5773, 0.5773, -0.5773, 0.5773, -0.5773, -0.5773, 0.5773, -0.5773, 0.5773, 0.5773],             "uvs": [0.5, 0.5, 0.5, 0, 0, 0.5, 0.5, 1, 0, 1, 0.5, 0.5, 0.5, 1, 0, 0.5, 0.5, 0.5, 0.5, 1, 0, 0.5, 0.5, 0.5, 0.5, 1, 1, 0.5, 0.5, 0.5, 0.5, 0, 0, 0.5, 0, 0, 0, 0.5, 0.5, 1, 0, 1, 0, 0.5, 0.5, 1, 0, 1, 1, 1, 1, 0.5, 0.5, 0, 0, 0, 0, 0.5],             "indices": [0, 1, 2, 3, 4, 5, 0, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1, 17, 2, 4, 18, 5, 19, 20, 21, 22, 23, 10, 12, 24, 25, 26, 27, 28]         }]     },     "meshes": [{         "name": "Plane",         "id": "Plane",         "materialId": "Material.001",         "position": [0.0172, -2.9787, -0.5184],         "rotation": [0, 0, 0],         "scaling": [87.1479, 0.8635, 87.1479],         "isVisible": true,         "isEnabled": true,         "checkCollisions": false,         "billboardMode": 0,         "receiveShadows": true,         "positions": [-1, 0, -1, 1, 0, -1, -1, 0, 1, 1, 0, 1],         "normals": [0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0],         "uvs": [0.0001, 0.0001, 0.9999, 0.0001, 0.0001, 0.9999, 0.9999, 0.9999],         "indices": [0, 1, 2, 1, 3, 2],         "subMeshes": [{             "materialIndex": 0,             "verticesStart": 0,             "verticesCount": 4,             "indexStart": 0,             "indexCount": 6         }]     },     {         "name": "Cube",         "id": "Cube",         "materialId": "Material",         "geometryId": "CubeGeometry",         "position": [0, 0, 0],         "rotation": [0, 0, 0],         "scaling": [1, 1, 1],         "isVisible": true,         "isEnabled": true,         "checkCollisions": false,         "billboardMode": 0,         "receiveShadows": false,         "subMeshes": [{             "materialIndex": 0,             "verticesStart": 0,             "verticesCount": 29,             "indexStart": 0,             "indexCount": 36         }],         "animations": [{             "dataType": 1,             "framePerSecond": 30,             "loopBehavior": 1,             "name": "position animation",             "property": "position",             "keys": [{                 "frame": 0,                 "values": [0,0,0.0291]             },             {                 "frame": 1,                 "values": [0,0,0.0291]             },             {                 "frame": 30,                 "values": [0,0,10]             },             {                 "frame": 60,                 "values": [0,0,9.975]             },             {                 "frame": 90,                 "values": [0,0,0]             },             {                 "frame": 250,                 "values": [0,0,0]             }]         },         {             "dataType": 1,             "framePerSecond": 30,             "loopBehavior": 1,             "name": "rotation animation",             "property": "rotation",             "keys": [{                 "frame": 0,                 "values": [-0.016, 0, 0]             },             {                 "frame": 30,                 "values": [-0.016, 0, 0]             },             {                 "frame": 60,                 "values": [-6.2832, 0, 0]             },             {                 "frame": 250,                 "values": [-6.2832, 0, 0]             }]         }],         "autoAnimate": true,         "autoAnimateFrom": 0,         "autoAnimateTo": 250,         "autoAnimateLoop": true     },     {         "name": "Cube2",         "id": "Cube2",         "materialId": "Material",         "geometryId": "CubeGeometry",         "position": [10, 0, 0],         "rotation": [0, 0, 0],         "scaling": [1, 1, 1],         "isVisible": true,         "isEnabled": true,         "checkCollisions": false,         "billboardMode": 0,         "receiveShadows": false,         "subMeshes": [{             "materialIndex": 0,             "verticesStart": 0,             "verticesCount": 29,             "indexStart": 0,             "indexCount": 36         }]     },     {         "name": "Cube3",         "id": "Cube3",         "materialId": "Material",         "geometryId": "BoxPrimitive",         "position": [-10, 0, 0],         "rotation": [0, 0, 0],         "scaling": [1, 1, 1],         "isVisible": true,         "isEnabled": true,         "checkCollisions": false,         "billboardMode": 0,         "receiveShadows": false,         "subMeshes": [{             "materialIndex": 0,             "verticesStart": 0,             "verticesCount": 29,             "indexStart": 0,             "indexCount": 36         }]     }],     "multiMaterials": [],     "shadowGenerators": [{         "useVarianceShadowMap": true,         "mapSize": 1024,         "lightId": "Sun",         "renderList": ["Cube", "Cube2", "Cube3"]     }],     "skeletons": [],     "sounds": [{         "name": "violons11.wav",         "volume": 1,         "autoplay": true,         "loop": true,         "soundTrackId": 1         "spatialSound": true,         "position": [0, 0, 0]         "refDistance": 1.0,         "rolloffFactor": 1.0,         "maxDistance": 100,         "distanceModel": "linear",         "panningModel": "equalpower",         "isDirectional": false,         "coneInnerAngle": 90,         "coneOuterAngle": 180,         "coneOuterGain": 0,         "connectedMeshId": 0,         "localDirectionToMesh": [1, 0, 0]    }] }

github上译文:https://github.com/h53d/babylonjs-doc-cn/blob/master/target/generals/General/File_Format_Map_(.babylon).md

Babylon.js 使用JSON文件格式来描述场景.

你可以在这儿找到完整的加载器代码:
https://github.com/BabylonJS/Babylon.js/blob/master/src/Loading/Plugins/babylon.babylonFileLoader.js