Cesium JS API
AppearanceArcGisMapServerImageryProviderArcGISTiledElevationTerrainProviderArcTypeAssociativeArrayAxisAxisAlignedBoundingBoxbarycentricCoordinatesBillboardBillboardCollectionBillboardGraphicsBillboardVisualizerbinarySearchbinarySearchComparatorBingMapsGeocoderServiceBingMapsImageryProviderBingMapsStyleBlendEquationBlendFunctionBlendingStateBlendOptionBoundingRectangleBoundingSphereBoxEmitterBoxGeometryBoxGeometryUpdaterBoxGraphicsBoxOutlineGeometrybuildModuleUrlCallbackPropertyCameraCameraEventAggregatorCameraEventTypeCartesian2Cartesian3Cartesian4CartographicCartographicGeocoderServiceCatmullRomSplineCesium3DTileCesium3DTileColorBlendModeCesium3DTileContentCesium3DTileFeatureCesium3DTilePointFeatureCesium3DTilesetCesium3DTilesetGraphicsCesium3DTilesetVisualizerCesium3DTileStyleCesium3DTilesVoxelProviderCesiumTerrainProviderCesiumWidgetCheckerboardMaterialPropertyCircleEmitterCircleGeometryCircleOutlineGeometryClassificationPrimitiveClassificationTypeClippingPlaneClippingPlaneCollectionClockClockRangeClockStepcloneCloudCollectionCloudTypeColorColorBlendModeColorGeometryInstanceAttributeColorMaterialPropertycombineComponentDatatypeCompositeEntityCollectionCompositeMaterialPropertyCompositePositionPropertyCompositePropertyCompressedTextureBufferConditionsExpressionConeEmitterConstantPositionPropertyConstantPropertyConstantSplineContextOptionsCoplanarPolygonGeometryCoplanarPolygonOutlineGeometryCornerTypeCorridorGeometryCorridorGeometryUpdaterCorridorGraphicsCorridorOutlineGeometrycreateElevationBandMaterialcreateElevationBandMaterialBandcreateElevationBandMaterialEntrycreateGuidcreateOsmBuildingscreateTangentSpaceDebugPrimitivecreateWorldImagerycreateWorldTerrainCreditCreditDisplayCubicRealPolynomialCullFaceCullingVolumeCumulusCloudCustomDataSourceCustomHeightmapTerrainProviderCustomShaderCustomShaderModeCustomShaderTranslucencyModeCylinderGeometryCylinderGeometryUpdaterCylinderGraphicsCylinderOutlineGeometryCzmlDataSourceDataSourceDataSourceClockDataSourceCollectionDataSourceDisplayDebugAppearanceDebugCameraPrimitiveDebugModelMatrixPrimitiveDefaultProxydefaultValuedefinedDepthFunctiondestroyObjectDeveloperErrorDirectionalLightDirectionUpDiscardEmptyTileImagePolicyDiscardMissingTileImagePolicyDistanceDisplayConditionDistanceDisplayConditionGeometryInstanceAttributeEasingFunctionEllipseGeometryEllipseGeometryUpdaterEllipseGraphicsEllipseOutlineGeometryEllipsoidEllipsoidGeodesicEllipsoidGeometryEllipsoidGeometryUpdaterEllipsoidGraphicsEllipsoidOutlineGeometryEllipsoidRhumbLineEllipsoidSurfaceAppearanceEllipsoidTangentPlaneEllipsoidTerrainProviderEntityEntityClusterEntityCollectionEntityViewEventEventHelperexcludesReverseAxisexportKmlexportKmlModelCallbackexportKmlResultKmlexportKmlResultKmzExpressionExtrapolationTypeFeatureDetectionFogformatErrorFrameRateMonitorFrustumGeometryFrustumOutlineGeometryFullscreenGeocoderServiceGeocodeTypeGeographicProjectionGeographicTilingSchemeGeoJsonDataSourceGeometryGeometryAttributeGeometryAttributesGeometryFactoryGeometryInstanceGeometryInstanceAttributeGeometryPipelineGeometryUpdaterGeometryVisualizergetAbsoluteUrigetBaseUrigetExtensionFromUriGetFeatureInfoFormatgetFilenameFromUrigetImagePixelsgetTimestampGlobeGlobeTranslucencyGoogleEarthEnterpriseImageryProviderGoogleEarthEnterpriseMapsProviderGoogleEarthEnterpriseMetadataGoogleEarthEnterpriseTerrainDataGoogleEarthEnterpriseTerrainProviderGpxDataSourceGregorianDateGridImageryProviderGridMaterialPropertyGroundGeometryUpdaterGroundPolylineGeometryGroundPolylinePrimitiveGroundPrimitiveHeadingPitchRangeHeadingPitchRollHeadingPitchRollValuesHeightmapEncodingHeightmapTerrainDataHeightReferenceHermitePolynomialApproximationHermiteSplineHilbertOrderHorizontalOriginI3SDataProviderI3SFeatureI3SFieldI3SGeometryI3SLayerI3SNodeImageBasedLightingImageMaterialPropertyImageryLayerImageryLayerCollectionImageryLayerFeatureInfoImageryProviderImageryTypesincludesReverseAxisIndexDatatypeIntersectIntersections2DIntersectionTestsIntervalIonIonGeocoderServiceIonImageryProviderIonResourceIonWorldImageryStyleisLeapYearIso8601JulianDateKeyboardEventModifierKmlCameraKmlDataSourceKmlFeatureDataKmlLookAtKmlTourKmlTourFlyToKmlTourWaitLabelLabelCollectionLabelGraphicsLabelStyleLabelVisualizerLagrangePolynomialApproximationLeapSecondLightLightingModelLinearApproximationLinearSplineMapboxImageryProviderMapboxStyleImageryProviderMapMode2DMapProjectionMaterialMaterialAppearanceMaterialSupportMaterialPropertyMathMatrix2Matrix3Matrix4mergeSortmergeSortComparatorMetadataClassMetadataClassPropertyMetadataComponentTypeMetadataEnumMetadataEnumValueMetadataSchemaMetadataTypeModelModelAnimationModelAnimationCollectionModelAnimationLoopModelFeatureModelGraphicsModelNodeModelVisualizerMoonMorphWeightSplineNearFarScalarNeverTileDiscardPolicyNodeTransformationPropertyobjectToQueryOccluderOpenCageGeocoderServiceOpenStreetMapImageryProviderOrientedBoundingBoxOrthographicFrustumOrthographicOffCenterFrustumPackableForInterpolationParticleParticleBurstParticleEmitterParticleSystemPathGraphicsPathVisualizerPeliasGeocoderServicePerInstanceColorAppearancePerspectiveFrustumPerspectiveOffCenterFrustumPinBuilderPixelDatatypePixelFormatPlanePlaneGeometryPlaneGeometryUpdaterPlaneGraphicsPlaneOutlineGeometryPointCloudShadingPointGraphicspointInsideTrianglePointPrimitivePointPrimitiveCollectionPointVisualizerPolygonGeometryPolygonGeometryUpdaterPolygonGraphicsPolygonHierarchyPolygonOutlineGeometryPolylinePolylineArrowMaterialPropertyPolylineCollectionPolylineColorAppearancePolylineDashMaterialPropertyPolylineGeometryPolylineGeometryUpdaterPolylineGlowMaterialPropertyPolylineGraphicsPolylineMaterialAppearancePolylineOutlineMaterialPropertyPolylineVisualizerPolylineVolumeGeometryPolylineVolumeGeometryUpdaterPolylineVolumeGraphicsPolylineVolumeOutlineGeometryPositionPropertyPositionPropertyArrayPostProcessStagePostProcessStageCollectionPostProcessStageCompositePostProcessStageLibraryPostProcessStageSampleModePrimitivePrimitiveCollectionPrimitiveTypePropertyPropertyArrayPropertyBagProxyQuadraticRealPolynomialQuantizedMeshTerrainDataQuarticRealPolynomialQuaternionQuaternionSplinequeryToObjectQueueRayreadyPromiseRectangleRectangleGeometryRectangleGeometryUpdaterRectangleGraphicsRectangleOutlineGeometryReferenceFrameReferencePropertyremoveExtensionRequestRequestErrorEventRequestSchedulerRequestStateRequestTypeResourceRuntimeErrorSampledPositionPropertySampledPropertysampleTerrainsampleTerrainMostDetailedSceneSceneModeSceneTransformsScreenSpaceCameraControllerScreenSpaceEventHandlerScreenSpaceEventTypeshaderDefinesshaderMaximumIntersectionsLengthshaderUniformsShadowMapShadowModeShowGeometryInstanceAttributeSimon1994PlanetaryPositionsSimplePolylineGeometrySingleTileImageryProviderSkyAtmosphereSkyBoxSphereEmitterSphereGeometrySphereOutlineGeometrySphericalSplineSplitDirectionStencilFunctionStencilOperationSteppedSplineStripeMaterialPropertyStripeOrientationStyleExpressionsubdivideArraySunSunLightTaskProcessorTerrainDataTerrainProviderTextureMagnificationFilterTextureMinificationFilterTextureUniformTileAvailabilityTileCoordinatesImageryProviderTileDiscardPolicyTileMapServiceImageryProviderTileProviderErrorTilingSchemeTimeDynamicImageryTimeDynamicPointCloudTimeIntervalTimeIntervalCollectionTimeIntervalCollectionPositionPropertyTimeIntervalCollectionPropertyTimeStandardTransformsTranslationRotationScaleTridiagonalSystemSolverTrustedServersUniformSpecifierUniformTypeUrlTemplateImageryProviderVaryingTypeVelocityOrientationPropertyVelocityVectorPropertyVertexFormatVerticalOriginVideoSynchronizerViewportQuadVisibilityVisualizerVoxelPrimitiveVoxelProviderVoxelShapeTypeVRTheWorldTerrainProviderWallGeometryWallGeometryUpdaterWallGraphicsWallOutlineGeometryWebGLConstantsWebGLOptionsWebMapServiceImageryProviderWebMapTileServiceImageryProviderWebMercatorProjectionWebMercatorTilingSchemeWindingOrderwriteTextToCanvasAnimationAnimationViewModelBaseLayerPickerBaseLayerPickerViewModelCesium3DTilesInspectorCesium3DTilesInspectorViewModelCesiumInspectorCesiumInspectorViewModelClockViewModelCommandcreateCommandFullscreenButtonFullscreenButtonViewModelGeocoderGeocoderViewModelHomeButtonHomeButtonViewModelInfoBoxInfoBoxViewModelNavigationHelpButtonNavigationHelpButtonViewModelPerformanceWatchdogPerformanceWatchdogViewModelProjectionPickerProjectionPickerViewModelProviderViewModelSceneModePickerSceneModePickerViewModelSelectionIndicatorSelectionIndicatorViewModelSvgPathBindingHandlerTimelineToggleButtonViewModelViewerviewerCesium3DTilesInspectorMixinviewerCesiumInspectorMixinviewerDragDropMixinviewerPerformanceWatchdogMixinviewerVoxelInspectorMixinVoxelInspectorVoxelInspectorViewModelVRButtonVRButtonViewModel

DistanceDisplayCondition

DistanceDisplayCondition 描述了一种基于距离的条件,在场景中展示一个实体的可见性和详细度。当实体与相机之间的距离小于指定距离时,该实体将不再显示。

示例

在下面的示例中,我们将创建一个3D模型,并通过 DistanceDisplayCondition 控制其可见性。

const viewer = new Cesium.Viewer("cesiumContainer");
const modelMatrix = Cesium.Transforms.eastNorthUpToFixedFrame(Cesium.Cartesian3.fromDegrees(-74.070174, 40.711447, 0.0));
const model = viewer.scene.primitives.add(Cesium.Model.fromGltf({
    url: "https://cesium.com/downloads/models/gltf/box-techno-01-00-01/box-techno-01-00-01.gltf",
    modelMatrix: modelMatrix,
    scale: 100.0,
    distanceDisplayCondition: new Cesium.DistanceDisplayCondition(0.0, 800000.0)
}));

viewer.zoomTo(model);

在上面的例子中,我们创建了一个 Model 实例,并设置了 distanceDisplayCondition 属性。该属性将该模型的可见范围限制在相机距离该模型前方800000米以内。

构造函数

new Cesium.DistanceDisplayCondition(near, far);
  • near - Number 可见性开始的距离。可选参数,默认为0。
  • far - Number 可见性结束的距离。可选参数,默认为Infinity。

属性

  • near - Number 可见性开始的距离。
  • far - Number 可见性结束的距离。

方法

  • equals(other) - 比较两个 DistanceDisplayCondition 是否相等。
    • other - DistanceDisplayCondition - 比较的另一个实例。

示例代码

const viewer = new Cesium.Viewer("cesiumContainer");
const modelMatrix = Cesium.Transforms.eastNorthUpToFixedFrame(Cesium.Cartesian3.fromDegrees(-74.070174, 40.711447, 0.0));
const model = viewer.scene.primitives.add(Cesium.Model.fromGltf({
    url: "https://cesium.com/downloads/models/gltf/box-techno-01-00-01/box-techno-01-00-01.gltf",
    modelMatrix: modelMatrix,
    scale: 100.0,
    distanceDisplayCondition: new Cesium.DistanceDisplayCondition(0.0, 800000.0)
}));

viewer.zoomTo(model);