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89 lines
1.9 KiB
JavaScript
89 lines
1.9 KiB
JavaScript
import defaultValue from "./defaultValue.js";
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/**
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* Attributes, which make up a geometry's vertices. Each property in this object corresponds to a
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* {@link GeometryAttribute} containing the attribute's data.
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* <p>
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* Attributes are always stored non-interleaved in a Geometry.
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* </p>
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*
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* @alias GeometryAttributes
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* @constructor
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*/
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function GeometryAttributes(options) {
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options = defaultValue(options, defaultValue.EMPTY_OBJECT);
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/**
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* The 3D position attribute.
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* <p>
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* 64-bit floating-point (for precision). 3 components per attribute.
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* </p>
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*
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* @type GeometryAttribute
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*
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* @default undefined
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*/
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this.position = options.position;
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/**
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* The normal attribute (normalized), which is commonly used for lighting.
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* <p>
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* 32-bit floating-point. 3 components per attribute.
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* </p>
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*
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* @type GeometryAttribute
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*
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* @default undefined
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*/
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this.normal = options.normal;
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/**
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* The 2D texture coordinate attribute.
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* <p>
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* 32-bit floating-point. 2 components per attribute
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* </p>
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*
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* @type GeometryAttribute
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*
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* @default undefined
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*/
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this.st = options.st;
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/**
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* The bitangent attribute (normalized), which is used for tangent-space effects like bump mapping.
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* <p>
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* 32-bit floating-point. 3 components per attribute.
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* </p>
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*
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* @type GeometryAttribute
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*
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* @default undefined
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*/
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this.bitangent = options.bitangent;
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/**
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* The tangent attribute (normalized), which is used for tangent-space effects like bump mapping.
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* <p>
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* 32-bit floating-point. 3 components per attribute.
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* </p>
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*
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* @type GeometryAttribute
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*
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* @default undefined
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*/
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this.tangent = options.tangent;
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/**
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* The color attribute.
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* <p>
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* 8-bit unsigned integer. 4 components per attribute.
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* </p>
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*
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* @type GeometryAttribute
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*
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* @default undefined
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*/
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this.color = options.color;
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}
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export default GeometryAttributes;
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