Class: GeometryData

GeometryData

new GeometryData(data, size, params) geometry/GeometryData.js, line 24

geometry vertex data

Name	Type	Description
`data`	TypedArray	数据
`size`	Number	The number of components per vertex attribute.Must be 1, 2, 3, or 4.
`params`	Object	optional 初始化参数，所有params都会复制到实例上

Members Show Inherited

Name	Type	Default	Description
`className`	String	GeometryData	类名
`isGeometryData`	Boolean	true	isGeometryData
`size`	Number		The number of components per vertex attribute.Must be 1, 2, 3, or 4.
`normalized`	Boolean	false	Whether integer data values should be normalized when being casted to a float.
`type`	GLenum		The data type of each component in the array.
`isDirty`	Boolean	false
`bufferViewId`	String
`glBuffer`	Buffer		glBuffer
`id`	string		id
`data`	TypedArray
`stride`	Number	this.size	The offset in bytes between the beginning of consecutive vertex attributes.
`offset`	Number	0	An offset in bytes of the first component in the vertex attribute array. Must be a multiple of type.
`data`	TypedArray
`length`	Number
`realLength`	Number
`count`	Number

Methods Show Inherited

getByteLength(){number} geometry/GeometryData.js, line 199

获取数据大小，单位为字节

Returns:

Type	Description
number	数据大小

setSubData(offset, data) geometry/GeometryData.js, line 221

更新部分数据

Name	Type	Description
`offset`	Number	偏移index
`data`	TypedArray	数据

clearSubData() geometry/GeometryData.js, line 239

清除 subData

clone(){GeometryData} geometry/GeometryData.js, line 250

clone

Returns:

Type	Description
GeometryData

copy(geometryData) geometry/GeometryData.js, line 259

copy

Name	Type	Description
`geometryData`	GeometryData

getOffset(index){Number} geometry/GeometryData.js, line 273

获取偏移值

Name	Type	Description
`index`	Number

Returns:

Type	Description
Number

get(index){Number|Vector2|Vector3|Vector4} geometry/GeometryData.js, line 286

Get the value by index. Please note that it will return the same reference for performance reasons. If you want to get a copy, use #getCopy instead.

Name	Type	Description
`index`	Number

Returns:

Type	Description
Number \| Vector2 \| Vector3 \| Vector4

getCopy(index){Number|Vector2|Vector3|Vector4} geometry/GeometryData.js, line 297

Get the value by index. It will return a copy of value.

Name	Type	Description
`index`	Number

Returns:

Type	Description
Number \| Vector2 \| Vector3 \| Vector4

set(index, value) geometry/GeometryData.js, line 306

设置值

Name	Type	Description
`index`	Number
`value`	Number \| Vector2 \| Vector3 \| Vector4

getByOffset(offset){Number|Vector2|Vector3|Vector4} geometry/GeometryData.js, line 316

根据 offset 获取值

Name	Type	Description
`offset`	Number

Returns:

Type	Description
Number \| Vector2 \| Vector3 \| Vector4

setByOffset(offset, value) geometry/GeometryData.js, line 330

根据 offset 设置值

Name	Type	Description
`offset`	Number
`value`	Number \| Vector2 \| Vector3 \| Vector4

traverse(callback){Boolean} geometry/GeometryData.js, line 345

按 index 遍历

Name	Type	Description
`callback`	GeometryDataTraverseCallback

Returns:

Type	Description
Boolean

traverseByComponent(callback){Boolean} geometry/GeometryData.js, line 362

按 Component 遍历 Component

Name	Type	Description
`callback`	GeometryDataTraverseByComponentCallback

Returns:

Type	Description
Boolean