Properties
Optional boundingRadius
boundingRadius: undefined | number
Optional colors
colors: number[]
Optional customAttributes
customAttributes: Array<object>
Optional doubleSided
doubleSided: undefined | false | true
Optional indices
indices: number[]
Optional maxPos
maxPos: undefined | object
Optional minPos
minPos: undefined | object
Optional normals
normals: number[]
positions
positions: number[]
Optional uvs
uvs: number[]
几何体信息。