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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| /*global define*/ | ||
| define([ | ||
| '../Core/ComponentDatatype', | ||
| '../Core/defaultValue', | ||
| '../Core/defined', | ||
| '../Core/DeveloperError' | ||
| ], function( | ||
| ComponentDatatype, | ||
| defaultValue, | ||
| defined, | ||
| DeveloperError) { | ||
| 'use strict'; | ||
|
|
||
| /** | ||
| * @private | ||
| */ | ||
| function Cesium3DTileFeatureTableResources(featureTableJSON, featureTableBinary) { | ||
| this.json = featureTableJSON; | ||
| this.buffer = featureTableBinary; | ||
| this._cachedArrayBufferViews = {}; | ||
| this.featuresLength = 0; | ||
| } | ||
|
|
||
| Cesium3DTileFeatureTableResources.prototype.getTypedArrayForSemantic = function(semantic, byteOffset, componentType, count, featureSize) { | ||
| //>>includeStart('debug', pragmas.debug); | ||
| if (!defined(byteOffset)) { | ||
| throw new DeveloperError('byteOffset must be defined to read from binary data for semantic: ' + semantic); | ||
| } | ||
| if (!defined(componentType)) { | ||
| throw new DeveloperError('componentType must be defined to read from binary data for semantic: ' + semantic); | ||
| } | ||
| if (!defined(count)) { | ||
| throw new DeveloperError('count must be defined to read from binary data for semantic: ' + semantic); | ||
| } | ||
| //>>includeEnd('debug'); | ||
| var cachedArrayBufferViews = this._cachedArrayBufferViews; | ||
| var arrayBuffer = cachedArrayBufferViews[semantic]; | ||
| if (!defined(arrayBuffer)) { | ||
| arrayBuffer = ComponentDatatype.createArrayBufferView(componentType, this.buffer.buffer, this.buffer.byteOffset + byteOffset, count * featureSize); | ||
| cachedArrayBufferViews[semantic] = arrayBuffer; | ||
| } | ||
| return arrayBuffer; | ||
| }; | ||
|
|
||
| Cesium3DTileFeatureTableResources.prototype.getGlobalProperty = function(semantic, componentType, count) { | ||
| var jsonValue = this.json[semantic]; | ||
| if (defined(jsonValue)) { | ||
| var byteOffset = jsonValue.byteOffset; | ||
| if (defined(byteOffset)) { | ||
| // This is a reference to the binary | ||
| count = defaultValue(count, 1); | ||
| var typedArray = this.getTypedArrayForSemantic(semantic, byteOffset, componentType, count, 1); | ||
| var subArray = typedArray.subarray(0, count); | ||
| if (subArray.length === 1) { | ||
| return subArray[0]; | ||
| } | ||
| return subArray; | ||
| } | ||
| } | ||
| return jsonValue; | ||
| }; | ||
|
|
||
| Cesium3DTileFeatureTableResources.prototype.getProperty = function(semantic, featureId, componentType, featureSize) { | ||
| var jsonValue = this.json[semantic]; | ||
| if (defined(jsonValue)) { | ||
| var byteOffset = jsonValue.byteOffset; | ||
| if (defined(byteOffset)) { | ||
| // This is a reference to the binary | ||
| featureSize = defaultValue(featureSize, 1); | ||
| var typedArray = this.getTypedArrayForSemantic(semantic, byteOffset, componentType, this.featuresLength, featureSize); | ||
| var subArray = typedArray.subarray(featureId * featureSize, featureId * featureSize + featureSize); | ||
| if (subArray.length === 1) { | ||
| return subArray[0]; | ||
| } | ||
| return subArray; | ||
| } | ||
| } | ||
| if (Array.isArray(jsonValue)) { | ||
| return jsonValue.slice(featureId * featureSize, featureId * featureSize + featureSize); | ||
| } | ||
| return jsonValue; | ||
| }; | ||
|
|
||
| return Cesium3DTileFeatureTableResources; | ||
| }); |
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