/*说明/ TD 创建实例 const app = new TD(options) options参数说明: ele:渲染容器，document|string|undefined. webgl:指定渲染方式，默认根据系统自动配置，值1|2 render:object|undefined,渲染参数配置 src：string|undefined,默认undefined, 初始化主场景模型 scene：object|undefined,场景参数配置 shadowMap：是否渲染阴影，默认false background:背景设置，默认 { type:1,//0,默认，1增加地面纹理 color:'#ffffff', widthSegments:20, heightSegments:20, receiveShadow:true } grid:地面网格设置 camera:摄像机设置 control：控制参数 lights:array,灯光配置

方法： addLights：参数Array,灯光数组 addLight:参数options，添加灯光配置 create：创建模型，返回promise参数options name:名称，默认随机生成 type:TDGeometry.MODEL|TDGeometry.TEXT|TDGeometry.CUBE|TDGeometry.CIRCLE src：加载的外部模型或者字体地址 fileType：string|'auto',加载外部文件类型 //geometry参数 width text height depth widthSegments heightSegments depthSegments' font size curveSegments bevelEnabled bevelThickness bevelSize bevelSegments radius segments thetaStart thetaLength //material参数 color isLineBasicMaterial linewidth linecap linejoin dashSize gapSize isLineDashedMaterial scale alphaMap aoMap aoMapIntensity combine envMap lightMap lightMapIntensity map morphTargets reflectivity refractionRatio skinning specular specularMap wireframe wireframeLinecap wireframeLinejoin wireframeLinewidth depthPacking displacementMap displacementScale displacementBias fog farDistance nearDistance referencePosition emissive emissiveMap emissiveIntensity bumpMap bumpScale matcap morphNormals normalMap normalMapType normalScale shininess clearcoat roughness clearcoatRoughness roughnessMap defines metalness metalnessMap gradientMap clipping defaultAttributeValues extensions fragmentShader index0AttributeName flatShading uniforms vertexColors vertexShader transparent rotation sizeAttenuation

add:添加子类 on：监听事件