Cesium JS API
AppearanceArcGisMapServerImageryProviderArcGISTiledElevationTerrainProviderArcTypeAssociativeArrayAxisAxisAlignedBoundingBoxbarycentricCoordinatesBillboardBillboardCollectionBillboardGraphicsBillboardVisualizerbinarySearchbinarySearchComparatorBingMapsGeocoderServiceBingMapsImageryProviderBingMapsStyleBlendEquationBlendFunctionBlendingStateBlendOptionBoundingRectangleBoundingSphereBoxEmitterBoxGeometryBoxGeometryUpdaterBoxGraphicsBoxOutlineGeometrybuildModuleUrlCallbackPropertyCameraCameraEventAggregatorCameraEventTypeCartesian2Cartesian3Cartesian4CartographicCartographicGeocoderServiceCatmullRomSplineCesium3DTileCesium3DTileColorBlendModeCesium3DTileContentCesium3DTileFeatureCesium3DTilePointFeatureCesium3DTilesetCesium3DTilesetGraphicsCesium3DTilesetVisualizerCesium3DTileStyleCesium3DTilesVoxelProviderCesiumTerrainProviderCesiumWidgetCheckerboardMaterialPropertyCircleEmitterCircleGeometryCircleOutlineGeometryClassificationPrimitiveClassificationTypeClippingPlaneClippingPlaneCollectionClockClockRangeClockStepcloneCloudCollectionCloudTypeColorColorBlendModeColorGeometryInstanceAttributeColorMaterialPropertycombineComponentDatatypeCompositeEntityCollectionCompositeMaterialPropertyCompositePositionPropertyCompositePropertyCompressedTextureBufferConditionsExpressionConeEmitterConstantPositionPropertyConstantPropertyConstantSplineContextOptionsCoplanarPolygonGeometryCoplanarPolygonOutlineGeometryCornerTypeCorridorGeometryCorridorGeometryUpdaterCorridorGraphicsCorridorOutlineGeometrycreateElevationBandMaterialcreateElevationBandMaterialBandcreateElevationBandMaterialEntrycreateGuidcreateOsmBuildingscreateTangentSpaceDebugPrimitivecreateWorldImagerycreateWorldTerrainCreditCreditDisplayCubicRealPolynomialCullFaceCullingVolumeCumulusCloudCustomDataSourceCustomHeightmapTerrainProviderCustomShaderCustomShaderModeCustomShaderTranslucencyModeCylinderGeometryCylinderGeometryUpdaterCylinderGraphicsCylinderOutlineGeometryCzmlDataSourceDataSourceDataSourceClockDataSourceCollectionDataSourceDisplayDebugAppearanceDebugCameraPrimitiveDebugModelMatrixPrimitiveDefaultProxydefaultValuedefinedDepthFunctiondestroyObjectDeveloperErrorDirectionalLightDirectionUpDiscardEmptyTileImagePolicyDiscardMissingTileImagePolicyDistanceDisplayConditionDistanceDisplayConditionGeometryInstanceAttributeEasingFunctionEllipseGeometryEllipseGeometryUpdaterEllipseGraphicsEllipseOutlineGeometryEllipsoidEllipsoidGeodesicEllipsoidGeometryEllipsoidGeometryUpdaterEllipsoidGraphicsEllipsoidOutlineGeometryEllipsoidRhumbLineEllipsoidSurfaceAppearanceEllipsoidTangentPlaneEllipsoidTerrainProviderEntityEntityClusterEntityCollectionEntityViewEventEventHelperexcludesReverseAxisexportKmlexportKmlModelCallbackexportKmlResultKmlexportKmlResultKmzExpressionExtrapolationTypeFeatureDetectionFogformatErrorFrameRateMonitorFrustumGeometryFrustumOutlineGeometryFullscreenGeocoderServiceGeocodeTypeGeographicProjectionGeographicTilingSchemeGeoJsonDataSourceGeometryGeometryAttributeGeometryAttributesGeometryFactoryGeometryInstanceGeometryInstanceAttributeGeometryPipelineGeometryUpdaterGeometryVisualizergetAbsoluteUrigetBaseUrigetExtensionFromUriGetFeatureInfoFormatgetFilenameFromUrigetImagePixelsgetTimestampGlobeGlobeTranslucencyGoogleEarthEnterpriseImageryProviderGoogleEarthEnterpriseMapsProviderGoogleEarthEnterpriseMetadataGoogleEarthEnterpriseTerrainDataGoogleEarthEnterpriseTerrainProviderGpxDataSourceGregorianDateGridImageryProviderGridMaterialPropertyGroundGeometryUpdaterGroundPolylineGeometryGroundPolylinePrimitiveGroundPrimitiveHeadingPitchRangeHeadingPitchRollHeadingPitchRollValuesHeightmapEncodingHeightmapTerrainDataHeightReferenceHermitePolynomialApproximationHermiteSplineHilbertOrderHorizontalOriginI3SDataProviderI3SFeatureI3SFieldI3SGeometryI3SLayerI3SNodeImageBasedLightingImageMaterialPropertyImageryLayerImageryLayerCollectionImageryLayerFeatureInfoImageryProviderImageryTypesincludesReverseAxisIndexDatatypeIntersectIntersections2DIntersectionTestsIntervalIonIonGeocoderServiceIonImageryProviderIonResourceIonWorldImageryStyleisLeapYearIso8601JulianDateKeyboardEventModifierKmlCameraKmlDataSourceKmlFeatureDataKmlLookAtKmlTourKmlTourFlyToKmlTourWaitLabelLabelCollectionLabelGraphicsLabelStyleLabelVisualizerLagrangePolynomialApproximationLeapSecondLightLightingModelLinearApproximationLinearSplineMapboxImageryProviderMapboxStyleImageryProviderMapMode2DMapProjectionMaterialMaterialAppearanceMaterialSupportMaterialPropertyMathMatrix2Matrix3Matrix4mergeSortmergeSortComparatorMetadataClassMetadataClassPropertyMetadataComponentTypeMetadataEnumMetadataEnumValueMetadataSchemaMetadataTypeModelModelAnimationModelAnimationCollectionModelAnimationLoopModelFeatureModelGraphicsModelNodeModelVisualizerMoonMorphWeightSplineNearFarScalarNeverTileDiscardPolicyNodeTransformationPropertyobjectToQueryOccluderOpenCageGeocoderServiceOpenStreetMapImageryProviderOrientedBoundingBoxOrthographicFrustumOrthographicOffCenterFrustumPackableForInterpolationParticleParticleBurstParticleEmitterParticleSystemPathGraphicsPathVisualizerPeliasGeocoderServicePerInstanceColorAppearancePerspectiveFrustumPerspectiveOffCenterFrustumPinBuilderPixelDatatypePixelFormatPlanePlaneGeometryPlaneGeometryUpdaterPlaneGraphicsPlaneOutlineGeometryPointCloudShadingPointGraphicspointInsideTrianglePointPrimitivePointPrimitiveCollectionPointVisualizerPolygonGeometryPolygonGeometryUpdaterPolygonGraphicsPolygonHierarchyPolygonOutlineGeometryPolylinePolylineArrowMaterialPropertyPolylineCollectionPolylineColorAppearancePolylineDashMaterialPropertyPolylineGeometryPolylineGeometryUpdaterPolylineGlowMaterialPropertyPolylineGraphicsPolylineMaterialAppearancePolylineOutlineMaterialPropertyPolylineVisualizerPolylineVolumeGeometryPolylineVolumeGeometryUpdaterPolylineVolumeGraphicsPolylineVolumeOutlineGeometryPositionPropertyPositionPropertyArrayPostProcessStagePostProcessStageCollectionPostProcessStageCompositePostProcessStageLibraryPostProcessStageSampleModePrimitivePrimitiveCollectionPrimitiveTypePropertyPropertyArrayPropertyBagProxyQuadraticRealPolynomialQuantizedMeshTerrainDataQuarticRealPolynomialQuaternionQuaternionSplinequeryToObjectQueueRayreadyPromiseRectangleRectangleGeometryRectangleGeometryUpdaterRectangleGraphicsRectangleOutlineGeometryReferenceFrameReferencePropertyremoveExtensionRequestRequestErrorEventRequestSchedulerRequestStateRequestTypeResourceRuntimeErrorSampledPositionPropertySampledPropertysampleTerrainsampleTerrainMostDetailedSceneSceneModeSceneTransformsScreenSpaceCameraControllerScreenSpaceEventHandlerScreenSpaceEventTypeshaderDefinesshaderMaximumIntersectionsLengthshaderUniformsShadowMapShadowModeShowGeometryInstanceAttributeSimon1994PlanetaryPositionsSimplePolylineGeometrySingleTileImageryProviderSkyAtmosphereSkyBoxSphereEmitterSphereGeometrySphereOutlineGeometrySphericalSplineSplitDirectionStencilFunctionStencilOperationSteppedSplineStripeMaterialPropertyStripeOrientationStyleExpressionsubdivideArraySunSunLightTaskProcessorTerrainDataTerrainProviderTextureMagnificationFilterTextureMinificationFilterTextureUniformTileAvailabilityTileCoordinatesImageryProviderTileDiscardPolicyTileMapServiceImageryProviderTileProviderErrorTilingSchemeTimeDynamicImageryTimeDynamicPointCloudTimeIntervalTimeIntervalCollectionTimeIntervalCollectionPositionPropertyTimeIntervalCollectionPropertyTimeStandardTransformsTranslationRotationScaleTridiagonalSystemSolverTrustedServersUniformSpecifierUniformTypeUrlTemplateImageryProviderVaryingTypeVelocityOrientationPropertyVelocityVectorPropertyVertexFormatVerticalOriginVideoSynchronizerViewportQuadVisibilityVisualizerVoxelPrimitiveVoxelProviderVoxelShapeTypeVRTheWorldTerrainProviderWallGeometryWallGeometryUpdaterWallGraphicsWallOutlineGeometryWebGLConstantsWebGLOptionsWebMapServiceImageryProviderWebMapTileServiceImageryProviderWebMercatorProjectionWebMercatorTilingSchemeWindingOrderwriteTextToCanvasAnimationAnimationViewModelBaseLayerPickerBaseLayerPickerViewModelCesium3DTilesInspectorCesium3DTilesInspectorViewModelCesiumInspectorCesiumInspectorViewModelClockViewModelCommandcreateCommandFullscreenButtonFullscreenButtonViewModelGeocoderGeocoderViewModelHomeButtonHomeButtonViewModelInfoBoxInfoBoxViewModelNavigationHelpButtonNavigationHelpButtonViewModelPerformanceWatchdogPerformanceWatchdogViewModelProjectionPickerProjectionPickerViewModelProviderViewModelSceneModePickerSceneModePickerViewModelSelectionIndicatorSelectionIndicatorViewModelSvgPathBindingHandlerTimelineToggleButtonViewModelViewerviewerCesium3DTilesInspectorMixinviewerCesiumInspectorMixinviewerDragDropMixinviewerPerformanceWatchdogMixinviewerVoxelInspectorMixinVoxelInspectorVoxelInspectorViewModelVRButtonVRButtonViewModel

getExtensionFromUri

该函数从指定的URI中解析出扩展名。

语法

Cesium.getExtensionFromUri(uri)

参数

  • uri:String类型的URI,要分析的URI字符串。

返回值

如果URI中包含扩展名,则返回扩展名(不含点号)。否则,返回空字符串。

示例

var uri = 'http://some.path/to/a/file.xyz';
var extension = Cesium.getExtensionFromUri(uri);
console.log(extension); // 'xyz'

用法参考

通常,该函数用于解析文件类型,以便根据文件类型加载适当的3D对象。例如:

var uri = 'http://some.path/to/a/file.xyz';
var extension = Cesium.getExtensionFromUri(uri);

if (extension === 'xyz') {
    var entity = viewer.entities.add({
        position : Cesium.Cartesian3.fromDegrees(0.0, 0.0),
        model : {
            uri : uri
        }
    });
} else {
    console.log('Unrecognized file extension:', extension);
}

备注

该函数不验证URI是否是有效的URL地址或本地文件路径。在解析URI前,应该进行相应的验证。

参考文献