Cesium JS API
AppearanceArcGisMapServerImageryProviderArcGISTiledElevationTerrainProviderArcTypeAssociativeArrayAxisAxisAlignedBoundingBoxbarycentricCoordinatesBillboardBillboardCollectionBillboardGraphicsBillboardVisualizerbinarySearchbinarySearchComparatorBingMapsGeocoderServiceBingMapsImageryProviderBingMapsStyleBlendEquationBlendFunctionBlendingStateBlendOptionBoundingRectangleBoundingSphereBoxEmitterBoxGeometryBoxGeometryUpdaterBoxGraphicsBoxOutlineGeometrybuildModuleUrlCallbackPropertyCameraCameraEventAggregatorCameraEventTypeCartesian2Cartesian3Cartesian4CartographicCartographicGeocoderServiceCatmullRomSplineCesium3DTileCesium3DTileColorBlendModeCesium3DTileContentCesium3DTileFeatureCesium3DTilePointFeatureCesium3DTilesetCesium3DTilesetGraphicsCesium3DTilesetVisualizerCesium3DTileStyleCesium3DTilesVoxelProviderCesiumTerrainProviderCesiumWidgetCheckerboardMaterialPropertyCircleEmitterCircleGeometryCircleOutlineGeometryClassificationPrimitiveClassificationTypeClippingPlaneClippingPlaneCollectionClockClockRangeClockStepcloneCloudCollectionCloudTypeColorColorBlendModeColorGeometryInstanceAttributeColorMaterialPropertycombineComponentDatatypeCompositeEntityCollectionCompositeMaterialPropertyCompositePositionPropertyCompositePropertyCompressedTextureBufferConditionsExpressionConeEmitterConstantPositionPropertyConstantPropertyConstantSplineContextOptionsCoplanarPolygonGeometryCoplanarPolygonOutlineGeometryCornerTypeCorridorGeometryCorridorGeometryUpdaterCorridorGraphicsCorridorOutlineGeometrycreateElevationBandMaterialcreateElevationBandMaterialBandcreateElevationBandMaterialEntrycreateGuidcreateOsmBuildingscreateTangentSpaceDebugPrimitivecreateWorldImagerycreateWorldTerrainCreditCreditDisplayCubicRealPolynomialCullFaceCullingVolumeCumulusCloudCustomDataSourceCustomHeightmapTerrainProviderCustomShaderCustomShaderModeCustomShaderTranslucencyModeCylinderGeometryCylinderGeometryUpdaterCylinderGraphicsCylinderOutlineGeometryCzmlDataSourceDataSourceDataSourceClockDataSourceCollectionDataSourceDisplayDebugAppearanceDebugCameraPrimitiveDebugModelMatrixPrimitiveDefaultProxydefaultValuedefinedDepthFunctiondestroyObjectDeveloperErrorDirectionalLightDirectionUpDiscardEmptyTileImagePolicyDiscardMissingTileImagePolicyDistanceDisplayConditionDistanceDisplayConditionGeometryInstanceAttributeEasingFunctionEllipseGeometryEllipseGeometryUpdaterEllipseGraphicsEllipseOutlineGeometryEllipsoidEllipsoidGeodesicEllipsoidGeometryEllipsoidGeometryUpdaterEllipsoidGraphicsEllipsoidOutlineGeometryEllipsoidRhumbLineEllipsoidSurfaceAppearanceEllipsoidTangentPlaneEllipsoidTerrainProviderEntityEntityClusterEntityCollectionEntityViewEventEventHelperexcludesReverseAxisexportKmlexportKmlModelCallbackexportKmlResultKmlexportKmlResultKmzExpressionExtrapolationTypeFeatureDetectionFogformatErrorFrameRateMonitorFrustumGeometryFrustumOutlineGeometryFullscreenGeocoderServiceGeocodeTypeGeographicProjectionGeographicTilingSchemeGeoJsonDataSourceGeometryGeometryAttributeGeometryAttributesGeometryFactoryGeometryInstanceGeometryInstanceAttributeGeometryPipelineGeometryUpdaterGeometryVisualizergetAbsoluteUrigetBaseUrigetExtensionFromUriGetFeatureInfoFormatgetFilenameFromUrigetImagePixelsgetTimestampGlobeGlobeTranslucencyGoogleEarthEnterpriseImageryProviderGoogleEarthEnterpriseMapsProviderGoogleEarthEnterpriseMetadataGoogleEarthEnterpriseTerrainDataGoogleEarthEnterpriseTerrainProviderGpxDataSourceGregorianDateGridImageryProviderGridMaterialPropertyGroundGeometryUpdaterGroundPolylineGeometryGroundPolylinePrimitiveGroundPrimitiveHeadingPitchRangeHeadingPitchRollHeadingPitchRollValuesHeightmapEncodingHeightmapTerrainDataHeightReferenceHermitePolynomialApproximationHermiteSplineHilbertOrderHorizontalOriginI3SDataProviderI3SFeatureI3SFieldI3SGeometryI3SLayerI3SNodeImageBasedLightingImageMaterialPropertyImageryLayerImageryLayerCollectionImageryLayerFeatureInfoImageryProviderImageryTypesincludesReverseAxisIndexDatatypeIntersectIntersections2DIntersectionTestsIntervalIonIonGeocoderServiceIonImageryProviderIonResourceIonWorldImageryStyleisLeapYearIso8601JulianDateKeyboardEventModifierKmlCameraKmlDataSourceKmlFeatureDataKmlLookAtKmlTourKmlTourFlyToKmlTourWaitLabelLabelCollectionLabelGraphicsLabelStyleLabelVisualizerLagrangePolynomialApproximationLeapSecondLightLightingModelLinearApproximationLinearSplineMapboxImageryProviderMapboxStyleImageryProviderMapMode2DMapProjectionMaterialMaterialAppearanceMaterialSupportMaterialPropertyMathMatrix2Matrix3Matrix4mergeSortmergeSortComparatorMetadataClassMetadataClassPropertyMetadataComponentTypeMetadataEnumMetadataEnumValueMetadataSchemaMetadataTypeModelModelAnimationModelAnimationCollectionModelAnimationLoopModelFeatureModelGraphicsModelNodeModelVisualizerMoonMorphWeightSplineNearFarScalarNeverTileDiscardPolicyNodeTransformationPropertyobjectToQueryOccluderOpenCageGeocoderServiceOpenStreetMapImageryProviderOrientedBoundingBoxOrthographicFrustumOrthographicOffCenterFrustumPackableForInterpolationParticleParticleBurstParticleEmitterParticleSystemPathGraphicsPathVisualizerPeliasGeocoderServicePerInstanceColorAppearancePerspectiveFrustumPerspectiveOffCenterFrustumPinBuilderPixelDatatypePixelFormatPlanePlaneGeometryPlaneGeometryUpdaterPlaneGraphicsPlaneOutlineGeometryPointCloudShadingPointGraphicspointInsideTrianglePointPrimitivePointPrimitiveCollectionPointVisualizerPolygonGeometryPolygonGeometryUpdaterPolygonGraphicsPolygonHierarchyPolygonOutlineGeometryPolylinePolylineArrowMaterialPropertyPolylineCollectionPolylineColorAppearancePolylineDashMaterialPropertyPolylineGeometryPolylineGeometryUpdaterPolylineGlowMaterialPropertyPolylineGraphicsPolylineMaterialAppearancePolylineOutlineMaterialPropertyPolylineVisualizerPolylineVolumeGeometryPolylineVolumeGeometryUpdaterPolylineVolumeGraphicsPolylineVolumeOutlineGeometryPositionPropertyPositionPropertyArrayPostProcessStagePostProcessStageCollectionPostProcessStageCompositePostProcessStageLibraryPostProcessStageSampleModePrimitivePrimitiveCollectionPrimitiveTypePropertyPropertyArrayPropertyBagProxyQuadraticRealPolynomialQuantizedMeshTerrainDataQuarticRealPolynomialQuaternionQuaternionSplinequeryToObjectQueueRayreadyPromiseRectangleRectangleGeometryRectangleGeometryUpdaterRectangleGraphicsRectangleOutlineGeometryReferenceFrameReferencePropertyremoveExtensionRequestRequestErrorEventRequestSchedulerRequestStateRequestTypeResourceRuntimeErrorSampledPositionPropertySampledPropertysampleTerrainsampleTerrainMostDetailedSceneSceneModeSceneTransformsScreenSpaceCameraControllerScreenSpaceEventHandlerScreenSpaceEventTypeshaderDefinesshaderMaximumIntersectionsLengthshaderUniformsShadowMapShadowModeShowGeometryInstanceAttributeSimon1994PlanetaryPositionsSimplePolylineGeometrySingleTileImageryProviderSkyAtmosphereSkyBoxSphereEmitterSphereGeometrySphereOutlineGeometrySphericalSplineSplitDirectionStencilFunctionStencilOperationSteppedSplineStripeMaterialPropertyStripeOrientationStyleExpressionsubdivideArraySunSunLightTaskProcessorTerrainDataTerrainProviderTextureMagnificationFilterTextureMinificationFilterTextureUniformTileAvailabilityTileCoordinatesImageryProviderTileDiscardPolicyTileMapServiceImageryProviderTileProviderErrorTilingSchemeTimeDynamicImageryTimeDynamicPointCloudTimeIntervalTimeIntervalCollectionTimeIntervalCollectionPositionPropertyTimeIntervalCollectionPropertyTimeStandardTransformsTranslationRotationScaleTridiagonalSystemSolverTrustedServersUniformSpecifierUniformTypeUrlTemplateImageryProviderVaryingTypeVelocityOrientationPropertyVelocityVectorPropertyVertexFormatVerticalOriginVideoSynchronizerViewportQuadVisibilityVisualizerVoxelPrimitiveVoxelProviderVoxelShapeTypeVRTheWorldTerrainProviderWallGeometryWallGeometryUpdaterWallGraphicsWallOutlineGeometryWebGLConstantsWebGLOptionsWebMapServiceImageryProviderWebMapTileServiceImageryProviderWebMercatorProjectionWebMercatorTilingSchemeWindingOrderwriteTextToCanvasAnimationAnimationViewModelBaseLayerPickerBaseLayerPickerViewModelCesium3DTilesInspectorCesium3DTilesInspectorViewModelCesiumInspectorCesiumInspectorViewModelClockViewModelCommandcreateCommandFullscreenButtonFullscreenButtonViewModelGeocoderGeocoderViewModelHomeButtonHomeButtonViewModelInfoBoxInfoBoxViewModelNavigationHelpButtonNavigationHelpButtonViewModelPerformanceWatchdogPerformanceWatchdogViewModelProjectionPickerProjectionPickerViewModelProviderViewModelSceneModePickerSceneModePickerViewModelSelectionIndicatorSelectionIndicatorViewModelSvgPathBindingHandlerTimelineToggleButtonViewModelViewerviewerCesium3DTilesInspectorMixinviewerCesiumInspectorMixinviewerDragDropMixinviewerPerformanceWatchdogMixinviewerVoxelInspectorMixinVoxelInspectorVoxelInspectorViewModelVRButtonVRButtonViewModel

ContextOptions

ContextOptions 对象定义了一个场景的创建配置项。

属性

以下是 ContextOptions 对象定义的属性：

属性 类型 描述
webgl Object 用于 WebGl 上下文创建的选项
allowTextureFilterAnisotropic Boolean 是否允许进行纹理过滤各向异性
antialias Boolean 表示是否启用平滑处理，抗锯齿
alpha Boolean 表示是否要单独开启 Canvas ，支持颜色通道
depth Boolean 表示是否开启深度缓存，并为找到合适深度的场合透明地绘制
stencil Boolean 表示是否启用模板缓存
preserveDrawingBuffer Boolean 是否存储绘图缓冲以进行后期处理
preferWebGl2 Boolean 是否优先启用 WebGl 2.0
failIfMajorPerformanceCaveat Boolean 如果实现不支持即时编译，则强制请求低干扰渲染上下文
powerPreference String 如果系统具有多个 GPU，则指示浏览器可能更喜欢使用的 GPU 类型
sceneMode Number 场景模式
mapProjection Object 对应的地图投影脚本的名称、扁率等
globe Globe 三维球对象
orderIndependentTranslucency Boolean 是否启用无序半透明渲染
translucentFramebuffer Boolean 是否支持使用半透明的帧缓存，如果半透明则创建帧缓存
contextOptions Object 此选项会传递给 WebGL 上下文的参数，覆盖在其他参数上

示例

以下示例演示了如何创建一个 Cesium 场景时在上下文中配置选项：

var viewer = new Cesium.Viewer('cesiumContainer', {
    contextOptions: {
        webgl: {
            alpha: false,
            depth: true,
            stencil: true,
            antialias: false,
            premultipliedAlpha: true,
            preserveDrawingBuffer: true,
            failIfMajorPerformanceCaveat: false,
        },
        allowTextureFilterAnisotropic: true,
        preferWebGl2: true
    }
});

参考