GeometryInstanceAttribute

Values and type information for per-instance geometry attributes.

const instance = new GeometryInstance({
geometry : BoxGeometry.fromDimensions({
dimensions : new Cartesian3(1000000.0, 1000000.0, 500000.0)
}),
modelMatrix : Matrix4.multiplyByTranslation(Transforms.eastNorthUpToFixedFrame(
Cartesian3.fromDegrees(0.0, 0.0)), new Cartesian3(0.0, 0.0, 1000000.0), new Matrix4()),
id : 'box',
attributes : {
color : new GeometryInstanceAttribute({
componentDatatype : ComponentDatatype.UNSIGNED_BYTE,
componentsPerAttribute : 4,
normalize : true,
value : [255, 255, 0, 255]
})
}
});

See also

Constructors

Link copied to clipboard

Types

Link copied to clipboard

Properties

Link copied to clipboard

The datatype of each component in the attribute, e.g., individual elements in GeometryInstanceAttribute.value.

Link copied to clipboard

A number between 1 and 4 that defines the number of components in an attributes. For example, a position attribute with x, y, and z components would have 3 as shown in the code example.

Link copied to clipboard

When true and componentDatatype is an integer format, indicate that the components should be mapped to the range 0, 1 (unsigned) or -1, 1 (signed) when they are accessed as floating-point for rendering.

Link copied to clipboard

The values for the attributes stored in a typed array. In the code example, every three elements in values defines one attributes since componentsPerAttribute is 3.