livecodingspace-app/support/client/lib/vwf/model/cesium/Scene/getModelAccessor.js

/*global define*/
define([
        '../Core/ComponentDatatype'
    ], function(
        ComponentDatatype) {
    "use strict";

    var ComponentsPerAttribute = {
        'SCALAR' : 1,
        'VEC2' : 2,
        'VEC3' : 3,
        'VEC4' : 4,
        'MAT2' : 4,
        'MAT3' : 9,
        'MAT4' : 16
    };

    /**
     * @private
     */
    var getModelAccessor = function(accessor) {
        var componentDatatype = accessor.componentType;
        var componentsPerAttribute = ComponentsPerAttribute[accessor.type];

        return {
            componentsPerAttribute : componentsPerAttribute,
            createArrayBufferView : function(buffer, byteOffset, length) {
                return ComponentDatatype.createArrayBufferView(componentDatatype, buffer, byteOffset, componentsPerAttribute * length);
            }
        };
    };

    return getModelAccessor;
});