ComponentDatatype

ComponentDatatype

WebGL component datatypes. Components are intrinsics, which form attributes, which form vertices.
Source: Core/ComponentDatatype.js, line 26

Members

staticconstantComponentDatatype.DOUBLE :Number

64-bit floating-point corresponding to gl.DOUBLE (in Desktop OpenGL; this is not supported in WebGL, and is emulated in Cesium via GeometryPipeline.encodeAttribute) and the type of an element in Float64Array.
Default Value: 0x140A
Source: Core/ComponentDatatype.js, line 88

staticconstantComponentDatatype.BYTE :Number

8-bit signed byte corresponding to gl.BYTE and the type of an element in Int8Array.
Default Value: 0x1400
Source: Core/ComponentDatatype.js, line 35

staticconstantComponentDatatype.FLOAT :Number

32-bit floating-point corresponding to FLOAT and the type of an element in Float32Array.
Default Value: 0x1406
Source: Core/ComponentDatatype.js, line 75

staticconstantComponentDatatype.SHORT :Number

16-bit signed short corresponding to SHORT and the type of an element in Int16Array.
Default Value: 0x1402
Source: Core/ComponentDatatype.js, line 55

staticconstantComponentDatatype.UNSIGNED_BYTE :Number

8-bit unsigned byte corresponding to UNSIGNED_BYTE and the type of an element in Uint8Array.
Default Value: 0x1401
Source: Core/ComponentDatatype.js, line 45

staticconstantComponentDatatype.UNSIGNED_SHORT :Number

16-bit unsigned short corresponding to UNSIGNED_SHORT and the type of an element in Uint16Array.
Default Value: 0x1403
Source: Core/ComponentDatatype.js, line 65

Methods

staticComponentDatatype.createArrayBufferView(componentDatatype, buffer, byteOffset, length) → Int8Array|Uint8Array|Int16Array|Uint16Array|Float32Array|Float64Array

Creates a typed view of an array of bytes.
Name Type Description
componentDatatype ComponentDatatype The type of the view to create.
buffer ArrayBuffer The buffer storage to use for the view.
byteOffset Number optional The offset, in bytes, to the first element in the view.
length Number optional The number of elements in the view.
Returns:
A typed array view of the buffer.
Throws:
Source: Core/ComponentDatatype.js, line 228

staticComponentDatatype.createTypedArray(componentDatatype, valuesOrLength) → Int8Array|Uint8Array|Int16Array|Uint16Array|Float32Array|Float64Array

Creates a typed array corresponding to component data type.
Name Type Description
componentDatatype ComponentDatatype The component data type.
valuesOrLength Number | Array The length of the array to create or an array.
Returns:
A typed array.
Throws:
Example:
// creates a Float32Array with length of 100
var typedArray = Cesium.ComponentDatatype.createTypedArray(Cesium.ComponentDatatype.FLOAT, 100);
Source: Core/ComponentDatatype.js, line 189

staticComponentDatatype.fromTypedArray(array) → ComponentDatatype

Gets the ComponentDatatype for the provided TypedArray instance.
Name Type Description
array TypedArray The typed array.
Returns:
The ComponentDatatype for the provided array, or undefined if the array is not a TypedArray.
Source: Core/ComponentDatatype.js, line 134

staticComponentDatatype.getSizeInBytes(componentDatatype) → Number

Returns the size, in bytes, of the corresponding datatype.
Name Type Description
componentDatatype ComponentDatatype The component datatype to get the size of.
Returns:
The size in bytes.
Throws:
Example:
// Returns Int8Array.BYTES_PER_ELEMENT
var size = Cesium.ComponentDatatype.getSizeInBytes(Cesium.ComponentDatatype.BYTE);
Source: Core/ComponentDatatype.js, line 103

staticComponentDatatype.validate(componentDatatype) → Boolean

Validates that the provided component datatype is a valid ComponentDatatype
Name Type Description
componentDatatype ComponentDatatype The component datatype to validate.
Returns:
true if the provided component datatype is a valid value; otherwise, false.
Example:
if (!Cesium.ComponentDatatype.validate(componentDatatype)) {
  throw new Cesium.DeveloperError('componentDatatype must be a valid value.');
}
Source: Core/ComponentDatatype.js, line 166