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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 | 1x 1x 96x 95x 95x 95x 95x 20x 95x 36x 19x 19x 20x 1x | import Check from "../Core/Check.js";
/**
* An enum describing the built-in instance attribute semantics.
*
* @enum {string}
*
* @private
*/
const InstanceAttributeSemantic = {
/**
* Per-instance translation.
*
* @type {string}
* @constant
*/
TRANSLATION: "TRANSLATION",
/**
* Per-instance rotation.
*
* @type {string}
* @constant
*/
ROTATION: "ROTATION",
/**
* Per-instance scale.
*
* @type {string}
* @constant
*/
SCALE: "SCALE",
/**
* Per-instance feature ID.
*
* @type {string}
* @constant
*/
FEATURE_ID: "_FEATURE_ID",
};
/**
* Gets the instance attribute semantic matching the glTF attribute semantic.
*
* @returns {InstanceAttributeSemantic} The instance attribute semantic, or undefined if there is no match.
*
* @private
*/
InstanceAttributeSemantic.fromGltfSemantic = function (gltfSemantic) {
//>>includeStart('debug', pragmas.debug);
Check.typeOf.string("gltfSemantic", gltfSemantic);
//>>includeEnd('debug');
let semantic = gltfSemantic;
// Strip the set index from the semantic
const setIndexRegex = /^(\w+)_\d+$/;
const setIndexMatch = setIndexRegex.exec(gltfSemantic);
if (setIndexMatch !== null) {
semantic = setIndexMatch[1];
}
switch (semantic) {
case "TRANSLATION":
return InstanceAttributeSemantic.TRANSLATION;
case "ROTATION":
return InstanceAttributeSemantic.ROTATION;
case "SCALE":
return InstanceAttributeSemantic.SCALE;
case "_FEATURE_ID":
return InstanceAttributeSemantic.FEATURE_ID;
}
return undefined;
};
export default Object.freeze(InstanceAttributeSemantic);
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