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| import Cartesian2 from '../Core/Cartesian2.js';
| import Cartesian3 from '../Core/Cartesian3.js';
| import Cartesian4 from '../Core/Cartesian4.js';
| import ComponentDatatype from '../Core/ComponentDatatype.js';
| import Matrix2 from '../Core/Matrix2.js';
| import Matrix3 from '../Core/Matrix3.js';
| import Matrix4 from '../Core/Matrix4.js';
|
| var ComponentsPerAttribute = {
| SCALAR : 1,
| VEC2 : 2,
| VEC3 : 3,
| VEC4 : 4,
| MAT2 : 4,
| MAT3 : 9,
| MAT4 : 16
| };
|
| var ClassPerType = {
| SCALAR : undefined,
| VEC2 : Cartesian2,
| VEC3 : Cartesian3,
| VEC4 : Cartesian4,
| MAT2 : Matrix2,
| MAT3 : Matrix3,
| MAT4 : Matrix4
| };
|
| /**
| * @private
| */
| function getBinaryAccessor(accessor) {
| var componentType = accessor.componentType;
| var componentDatatype;
| if (typeof componentType === 'string') {
| componentDatatype = ComponentDatatype.fromName(componentType);
| } else {
| componentDatatype = componentType;
| }
|
| var componentsPerAttribute = ComponentsPerAttribute[accessor.type];
| var classType = ClassPerType[accessor.type];
| return {
| componentsPerAttribute : componentsPerAttribute,
| classType : classType,
| createArrayBufferView : function(buffer, byteOffset, length) {
| return ComponentDatatype.createArrayBufferView(componentDatatype, buffer, byteOffset, componentsPerAttribute * length);
| }
| };
| }
| export default getBinaryAccessor;
|
|
