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new GeometryData(data, size, params)
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geometry vertex data
Name Type Description dataTypedArray 数据
sizeNumber The number of components per vertex attribute.Must be 1, 2, 3, or 4.
paramsObject 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
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getByteLength(){number}
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获取数据大小，单位为字节
Returns:
Type Description number 数据大小 -
setSubData(offset, data)
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更新部分数据
Name Type Description offsetNumber 偏移index
dataTypedArray 数据
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clearSubData()
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清除 subData
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clone(){GeometryData}
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clone
Returns:
Type Description GeometryData -
copy(geometryData)
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copy
Name Type Description geometryDataGeometryData -
getOffset(index){Number}
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获取偏移值
Name Type Description indexNumber Returns:
Type Description Number -
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 indexNumber Returns:
Type Description Number | Vector2 | Vector3 | Vector4 -
Get the value by index. It will return a copy of value.
Name Type Description indexNumber Returns:
Type Description Number | Vector2 | Vector3 | Vector4 -
根据 offset 获取值
Name Type Description offsetNumber Returns:
Type Description Number | Vector2 | Vector3 | Vector4 -
setByOffset(offset, value)
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根据 offset 设置值
Name Type Description offsetNumber valueNumber | Vector2 | Vector3 | Vector4 -
traverse(callback){Boolean}
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按 index 遍历
Name Type Description callbackGeometryDataTraverseCallback Returns:
Type Description Boolean -
traverseByComponent(callback){Boolean}
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按 Component 遍历 Component
Name Type Description callbackGeometryDataTraverseByComponentCallback Returns:
Type Description Boolean