import WebGLConstants from './WebGLConstants.js';
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/**
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* Winding order defines the order of vertices for a triangle to be considered front-facing.
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*
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* @exports WindingOrder
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*/
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var WindingOrder = {
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/**
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* Vertices are in clockwise order.
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*
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* @type {Number}
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* @constant
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*/
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CLOCKWISE : WebGLConstants.CW,
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/**
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* Vertices are in counter-clockwise order.
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*
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* @type {Number}
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* @constant
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*/
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COUNTER_CLOCKWISE : WebGLConstants.CCW,
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/**
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* @private
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*/
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validate : function(windingOrder) {
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return windingOrder === WindingOrder.CLOCKWISE ||
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windingOrder === WindingOrder.COUNTER_CLOCKWISE;
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}
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};
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export default Object.freeze(WindingOrder);
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