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openlayers/master/examples/Occluder.html
Éric Lemoine 5d14b9e2d4 Updated
2013-02-20 10:38:25 +01:00

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<!DOCTYPE html>
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<title>Occluder - Cesium Documentation</title>
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<ul id="ClassList"><div id="classItems"><li><a href="AnimationCollection.html">AnimationCollection</a></li><li><a href="AnimationController.html">AnimationController</a></li><li><a href="ArcGisMapServerImageryProvider.html">ArcGisMapServerImageryProvider</a></li><li><a href="AxisAlignedBoundingBox.html">AxisAlignedBoundingBox</a></li><li><a href="Billboard.html">Billboard</a></li><li><a href="BillboardCollection.html">BillboardCollection</a></li><li><a href="BingMapsImageryProvider.html">BingMapsImageryProvider</a></li><li><a href="BoundingRectangle.html">BoundingRectangle</a></li><li><a href="BoundingSphere.html">BoundingSphere</a></li><li><a href="Buffer.html">Buffer</a></li><li><a href="Camera.html">Camera</a></li><li><a href="CameraController.html">CameraController</a></li><li><a href="CameraEventAggregator.html">CameraEventAggregator</a></li><li><a href="Cartesian2.html">Cartesian2</a></li><li><a href="Cartesian3.html">Cartesian3</a></li><li><a href="Cartesian4.html">Cartesian4</a></li><li><a href="Cartographic.html">Cartographic</a></li><li><a href="CatmullRomSpline.html">CatmullRomSpline</a></li><li><a href="CentralBody.html">CentralBody</a></li><li><a href="CesiumViewerWidget.html">CesiumViewerWidget</a></li><li><a href="Clock.html">Clock</a></li><li><a href="Color.html">Color</a></li><li><a href="Command.html">Command</a></li><li><a href="CommandLists.html">CommandLists</a></li><li><a href="ComplexConicSensorVolume.html">ComplexConicSensorVolume</a></li><li><a href="CompositeDynamicObjectCollection.html">CompositeDynamicObjectCollection</a></li><li><a href="CompositePrimitive.html">CompositePrimitive</a></li><li><a href="Context.html">Context</a></li><li><a href="CubeMap.html">CubeMap</a></li><li><a href="CubeMapFace.html">CubeMapFace</a></li><li><a href="CustomSensorVolume.html">CustomSensorVolume</a></li><li><a href="DefaultProxy.html">DefaultProxy</a></li><li><a href="Deferred.html">Deferred</a></li><li><a href="DeveloperError.html">DeveloperError</a></li><li><a href="DiscardMissingTileImagePolicy.html">DiscardMissingTileImagePolicy</a></li><li><a href="DynamicBillboard.html">DynamicBillboard</a></li><li><a href="DynamicBillboardVisualizer.html">DynamicBillboardVisualizer</a></li><li><a href="DynamicColorMaterial.html">DynamicColorMaterial</a></li><li><a href="DynamicCone.html">DynamicCone</a></li><li><a href="DynamicConeVisualizer.html">DynamicConeVisualizer</a></li><li><a href="DynamicConeVisualizerUsingCustomSensor.html">DynamicConeVisualizerUsingCustomSensor</a></li><li><a href="DynamicDirectionsProperty.html">DynamicDirectionsProperty</a></li><li><a href="DynamicEllipsoid.html">DynamicEllipsoid</a></li><li><a href="DynamicEllipsoidVisualizer.html">DynamicEllipsoidVisualizer</a></li><li><a href="DynamicImageMaterial.html">DynamicImageMaterial</a></li><li><a href="DynamicLabel.html">DynamicLabel</a></li><li><a href="DynamicLabelVisualizer.html">DynamicLabelVisualizer</a></li><li><a href="DynamicMaterialProperty.html">DynamicMaterialProperty</a></li><li><a href="DynamicObject.html">DynamicObject</a></li><li><a href="DynamicObjectCollection.html">DynamicObjectCollection</a></li><li><a href="DynamicPath.html">DynamicPath</a></li><li><a href="DynamicPathVisualizer.html">DynamicPathVisualizer</a></li><li><a href="DynamicPoint.html">DynamicPoint</a></li><li><a href="DynamicPointVisualizer.html">DynamicPointVisualizer</a></li><li><a href="DynamicPolygon.html">DynamicPolygon</a></li><li><a href="DynamicPolygonVisualizer.html">DynamicPolygonVisualizer</a></li><li><a href="DynamicPolyline.html">DynamicPolyline</a></li><li><a href="DynamicPolylineVisualizer.html">DynamicPolylineVisualizer</a></li><li><a href="DynamicPositionProperty.html">DynamicPositionProperty</a></li><li><a href="DynamicProperty.html">DynamicProperty</a></li><li><a href="DynamicPyramid.html">DynamicPyramid</a></li><li><a href="DynamicPyramidVisualizer.html">DynamicPyramidVisualizer</a></li><li><a href="DynamicVertexPositionsProperty.html">DynamicVertexPositionsProperty</a></li><li><a href="Ellipsoid.html">Ellipsoid</a></li><li><a href="EllipsoidalOccluder.html">EllipsoidalOccluder</a></li><li><a href="EllipsoidPrimitive.html">EllipsoidPrimitive</a></li><li><a href="EllipsoidTangentPlane.html">EllipsoidTangentPlane</a></li><li><a href="EncodedCartesian3.html">EncodedCartesian3</a></li><li><a href="Enumeration.html">Enumeration</a></li><li><a href="Event.html">Event</a></li><li><a href="Extent.html">Extent</a></li><li><a href="Framebuffer.html">Framebuffer</a></li><li><a href="FrameState.html">FrameState</a></li><li><a href="FrustumCommands.html">FrustumCommands</a></li><li><a href="GeographicProjection.html">GeographicProjection</a></li><li><a href="GeographicTilingScheme.html">GeographicTilingScheme</a></li><li><a href="GregorianDate.html">GregorianDate</a></li><li><a href="HermiteSpline.html">HermiteSpline</a></li><li><a href="ImageryLayer.html">ImageryLayer</a></li><li><a href="ImageryLayerCollection.html">ImageryLayerCollection</a></li><li><a href="ImageryProvider.html">ImageryProvider</a></li><li><a href="Interval.html">Interval</a></li><li><a href="JulianDate.html">JulianDate</a></li><li><a href="Label.html">Label</a></li><li><a href="LabelCollection.html">LabelCollection</a></li><li><a href="LeapSecond.html">LeapSecond</a></li><li><a href="Material.html">Material</a></li><li><a href="Matrix2.html">Matrix2</a></li><li><a href="Matrix3.html">Matrix3</a></li><li><a href="Matrix4.html">Matrix4</a></li><li><a href="NeverTileDiscardPolicy.html">NeverTileDiscardPolicy</a></li><li><a href="Occluder.html">Occluder</a></li><li><a href="OpenStreetMapImageryProvider.html">OpenStreetMapImageryProvider</a></li><li><a href="OrientationInterpolator.html">OrientationInterpolator</a></li><li><a href="OrthographicFrustum.html">OrthographicFrustum</a></li><li><a href="PerformanceDisplay.html">PerformanceDisplay</a></li><li><a href="PerspectiveFrustum.html">PerspectiveFrustum</a></li><li><a href="PerspectiveOffCenterFrustum.html">PerspectiveOffCenterFrustum</a></li><li><a href="PickFramebuffer.html">PickFramebuffer</a></li><li><a href="Polygon.html">Polygon</a></li><li><a href="Polyline.html">Polyline</a></li><li><a href="PolylineCollection.html">PolylineCollection</a></li><li><a href="Promise.html">Promise</a></li><li><a href="Quaternion.html">Quaternion</a></li><li><a href="Queue.html">Queue</a></li><li><a href="Ray.html">Ray</a></li><li><a href="RectangularPyramidSensorVolume.html">RectangularPyramidSensorVolume</a></li><li><a href="ReferenceProperty.html">ReferenceProperty</a></li><li><a href="RequestErrorEvent.html">RequestErrorEvent</a></li><li><a href="RuntimeError.html">RuntimeError</a></li><li><a href="Scene.html">Scene</a></li><li><a href="SceneTransitioner.html">SceneTransitioner</a></li><li><a href="ScreenSpaceCameraController.html">ScreenSpaceCameraController</a></li><li><a href="ScreenSpaceEventHandler.html">ScreenSpaceEventHandler</a></li><li><a href="SensorVolumeCollection.html">SensorVolumeCollection</a></li><li><a href="ShaderCache.html">ShaderCache</a></li><li><a href="ShaderProgram.html">ShaderProgram</a></li><li><a href="SingleTileImageryProvider.html">SingleTileImageryProvider</a></li><li><a href="SkyAtmosphere.html">SkyAtmosphere</a></li><li><a href="SkyBox.html">SkyBox</a></li><li><a href="Spherical.html">Spherical</a></li><li><a href="TaskProcessor.html">TaskProcessor</a></li><li><a href="Texture.html">Texture</a></li><li><a href="Texture2DPool.html">Texture2DPool</a></li><li><a href="TextureAtlas.html">TextureAtlas</a></li><li><a href="TextureAtlasBuilder.html">TextureAtlasBuilder</a></li><li><a href="TileDiscardPolicy.html">TileDiscardPolicy</a></li><li><a href="TileMapServiceImageryProvider.html">TileMapServiceImageryProvider</a></li><li><a href="TilingScheme.html">TilingScheme</a></li><li><a href="TimeInterval.html">TimeInterval</a></li><li><a href="TimeIntervalCollection.html">TimeIntervalCollection</a></li><li><a href="Uniform.html">Uniform</a></li><li><a href="UniformArray.html">UniformArray</a></li><li><a href="UniformState.html">UniformState</a></li><li><a href="VertexArray.html">VertexArray</a></li><li><a href="VertexArrayFacade.html">VertexArrayFacade</a></li><li><a href="ViewportQuad.html">ViewportQuad</a></li><li><a href="VisualizerCollection.html">VisualizerCollection</a></li><li><a href="WebMapServiceImageryProvider.html">WebMapServiceImageryProvider</a></li><li><a href="WebMercatorProjection.html">WebMercatorProjection</a></li><li><a href="WebMercatorTilingScheme.html">WebMercatorTilingScheme</a></li><li><a href="binarySearch.html">binarySearch</a></li><li><a href="BingMapsStyle.html">BingMapsStyle</a></li><li><a href="BlendEquation.html">BlendEquation</a></li><li><a href="BlendFunction.html">BlendFunction</a></li><li><a href="BlendingState.html">BlendingState</a></li><li><a href="BoxTessellator.html">BoxTessellator</a></li><li><a href="BufferUsage.html">BufferUsage</a></li><li><a href="CameraColumbusViewMode.html">CameraColumbusViewMode</a></li><li><a href="CameraEventType.html">CameraEventType</a></li><li><a href="CameraFlightPath.html">CameraFlightPath</a></li><li><a href="CesiumMath.html">CesiumMath</a></li><li><a href="ClockRange.html">ClockRange</a></li><li><a href="ClockStep.html">ClockStep</a></li><li><a href="combine.html">combine</a></li><li><a href="computeSunPosition.html">computeSunPosition</a></li><li><a href="createGuid.html">createGuid</a></li><li><a href="createTaskProcessorWorker.html">createTaskProcessorWorker</a></li><li><a href="CubeMapEllipsoidTessellator.html">CubeMapEllipsoidTessellator</a></li><li><a href="CubicRealPolynomial.html">CubicRealPolynomial</a></li><li><a href="CullFace.html">CullFace</a></li><li><a href="CzmlBoolean.html">CzmlBoolean</a></li><li><a href="CzmlCartesian2.html">CzmlCartesian2</a></li><li><a href="CzmlCartesian3.html">CzmlCartesian3</a></li><li><a href="CzmlCartographic.html">CzmlCartographic</a></li><li><a href="CzmlColor.html">CzmlColor</a></li><li><a href="CzmlDefaults.html">CzmlDefaults</a></li><li><a href="CzmlHorizontalOrigin.html">CzmlHorizontalOrigin</a></li><li><a href="CzmlImage.html">CzmlImage</a></li><li><a href="CzmlLabelStyle.html">CzmlLabelStyle</a></li><li><a href="CzmlNumber.html">CzmlNumber</a></li><li><a href="CzmlString.html">CzmlString</a></li><li><a href="CzmlUnitCartesian3.html">CzmlUnitCartesian3</a></li><li><a href="CzmlUnitQuaternion.html">CzmlUnitQuaternion</a></li><li><a href="CzmlUnitSpherical.html">CzmlUnitSpherical</a></li><li><a href="CzmlVerticalOrigin.html">CzmlVerticalOrigin</a></li><li><a href="defaultValue.html">defaultValue</a></li><li><a href="DepthFunction.html">DepthFunction</a></li><li><a href="destroyObject.html">destroyObject</a></li><li><a href="ExtentTessellator.html">ExtentTessellator</a></li><li><a href="FAR.html">FAR</a></li><li><a href="FeatureDetection.html">FeatureDetection</a></li><li><a href="freezeObject.html">freezeObject</a></li><li><a href="Fullscreen.html">Fullscreen</a></li><li><a href="getImagePixels.html">getImagePixels</a></li><li><a href="HermitePolynomialApproximation.html">HermitePolynomialApproximation</a></li><li><a href="HorizontalOrigin.html">HorizontalOrigin</a></li><li><a href="IndexDatatype.html">IndexDatatype</a></li><li><a href="Intersect.html">Intersect</a></li><li><a href="IntersectionTests.html">IntersectionTests</a></li><li><a href="Iso8601.html">Iso8601</a></li><li><a href="jsonp.html">jsonp</a></li><li><a href="KeyboardEventModifier.html">KeyboardEventModifier</a></li><li><a href="LabelStyle.html">LabelStyle</a></li><li><a href="LagrangePolynomialApproximation.html">LagrangePolynomialApproximation</a></li><li><a href="LinearApproximation.html">LinearApproximation</a></li><li><a href="loadArrayBuffer.html">loadArrayBuffer</a></li><li><a href="loadCubeMap.html">loadCubeMap</a></li><li><a href="loadImage.html">loadImage</a></li><li><a href="loadJson.html">loadJson</a></li><li><a href="loadText.html">loadText</a></li><li><a href="loadXML.html">loadXML</a></li><li><a href="MeshFilters.html">MeshFilters</a></li><li><a href="MipmapHint.html">MipmapHint</a></li><li><a href="PixelDatatype.html">PixelDatatype</a></li><li><a href="PixelFormat.html">PixelFormat</a></li><li><a href="PlaneTessellator.html">PlaneTessellator</a></li><li><a href="pointInsideTriangle2D.html">pointInsideTriangle2D</a></li><li><a href="PolygonPipeline.html">PolygonPipeline</a></li><li><a href="PolylinePipeline.html">PolylinePipeline</a></li><li><a href="PrimitiveType.html">PrimitiveType</a></li><li><a href="processCzml.html">processCzml</a></li><li><a href="Projections.html">Projections</a></li><li><a href="QuadraticRealPolynomial.html">QuadraticRealPolynomial</a></li><li><a href="QuarticRealPolynomial.html">QuarticRealPolynomial</a></li><li><a href="RenderbufferFormat.html">RenderbufferFormat</a></li><li><a href="requestAnimationFrame.html">requestAnimationFrame</a></li><li><a href="SceneMode.html">SceneMode</a></li><li><a href="ScreenSpaceEventType.html">ScreenSpaceEventType</a></li><li><a href="Shapes.html">Shapes</a></li><li><a href="StencilFunction.html">StencilFunction</a></li><li><a href="StencilOperation.html">StencilOperation</a></li><li><a href="TextureMagnificationFilter.html">TextureMagnificationFilter</a></li><li><a href="TextureMinificationFilter.html">TextureMinificationFilter</a></li><li><a href="TextureWrap.html">TextureWrap</a></li><li><a href="TimeConstants.html">TimeConstants</a></li><li><a href="TimeStandard.html">TimeStandard</a></li><li><a href="Tipsify.html">Tipsify</a></li><li><a href="Transforms.html">Transforms</a></li><li><a href="TridiagonalSystemSolver.html">TridiagonalSystemSolver</a></li><li><a href="UniformDatatype.html">UniformDatatype</a></li><li><a href="VertexLayout.html">VertexLayout</a></li><li><a href="VerticalOrigin.html">VerticalOrigin</a></li><li><a href="Visibility.html">Visibility</a></li><li><a href="WindingOrder.html">WindingOrder</a></li><li><a href="ComponentDatatype.html">ComponentDatatype</a></li></div><div id="glslItems"><li><a href="czm_cellular.html">czm_cellular</a></li><li><a href="czm_columbusView.html">czm_columbusView</a></li><li><a href="czm_columbusViewMorph.html">czm_columbusViewMorph</a></li><li><a href="czm_complement.html">czm_complement</a></li><li><a href="czm_cone.html">czm_cone</a></li><li><a href="czm_coneContainsPoint.html">czm_coneContainsPoint</a></li><li><a href="czm_degreesPerRadian.html">czm_degreesPerRadian</a></li><li><a href="czm_eastNorthUpToEyeCoordinates.html">czm_eastNorthUpToEyeCoordinates</a></li><li><a href="czm_ellipsoid.html">czm_ellipsoid</a></li><li><a href="czm_ellipsoidContainsPoint.html">czm_ellipsoidContainsPoint</a></li><li><a href="czm_ellipsoidNew.html">czm_ellipsoidNew</a></li><li><a href="czm_ellipsoidSilhouetteCone.html">czm_ellipsoidSilhouetteCone</a></li><li><a href="czm_ellipsoidSilhouetteConeNew.html">czm_ellipsoidSilhouetteConeNew</a></li><li><a href="czm_ellipsoidSilhouetteConeNormal.html">czm_ellipsoidSilhouetteConeNormal</a></li><li><a href="czm_ellipsoidSilhouetteHalfspace.html">czm_ellipsoidSilhouetteHalfspace</a></li><li><a href="czm_ellipsoidSilhouetteHalfspaceNew.html">czm_ellipsoidSilhouetteHalfspaceNew</a></li><li><a href="czm_ellipsoidWgs84TextureCoordinates.html">czm_ellipsoidWgs84TextureCoordinates</a></li><li><a href="czm_emptyRaySegment.html">czm_emptyRaySegment</a></li><li><a href="czm_encodedCameraPositionMCHigh.html">czm_encodedCameraPositionMCHigh</a></li><li><a href="czm_encodedCameraPositionMCLow.html">czm_encodedCameraPositionMCLow</a></li><li><a href="czm_entireFrustum.html">czm_entireFrustum</a></li><li><a href="czm_epsilon1.html">czm_epsilon1</a></li><li><a href="czm_epsilon2.html">czm_epsilon2</a></li><li><a href="czm_epsilon3.html">czm_epsilon3</a></li><li><a href="czm_epsilon4.html">czm_epsilon4</a></li><li><a href="czm_epsilon5.html">czm_epsilon5</a></li><li><a href="czm_epsilon6.html">czm_epsilon6</a></li><li><a href="czm_epsilon7.html">czm_epsilon7</a></li><li><a href="czm_equalsEpsilon.html">czm_equalsEpsilon</a></li><li><a href="czm_eyeOffset.html">czm_eyeOffset</a></li><li><a href="czm_eyeToWindowCoordinates.html">czm_eyeToWindowCoordinates</a></li><li><a href="czm_frameNumber.html">czm_frameNumber</a></li><li><a href="czm_fullRaySegment.html">czm_fullRaySegment</a></li><li><a href="czm_geodeticSurfaceNormal.html">czm_geodeticSurfaceNormal</a></li><li><a href="czm_getDefaultMaterial.html">czm_getDefaultMaterial</a></li><li><a href="czm_getWgs84EllipsoidEC.html">czm_getWgs84EllipsoidEC</a></li><li><a href="czm_halfspace.html">czm_halfspace</a></li><li><a href="czm_infiniteProjection.html">czm_infiniteProjection</a></li><li><a href="czm_infinity.html">czm_infinity</a></li><li><a href="czm_insertAt.html">czm_insertAt</a></li><li><a href="czm_intersection.html">czm_intersection</a></li><li><a href="czm_inverseModel.html">czm_inverseModel</a></li><li><a href="czm_inverseModelView.html">czm_inverseModelView</a></li><li><a href="czm_inverseNormal.html">czm_inverseNormal</a></li><li><a href="czm_inverseProjection.html">czm_inverseProjection</a></li><li><a href="czm_inverseView.html">czm_inverseView</a></li><li><a href="czm_inverseViewRotation.html">czm_inverseViewRotation</a></li><li><a href="czm_isEmpty.html">czm_isEmpty</a></li><li><a href="czm_isFull.html">czm_isFull</a></li><li><a href="czm_latitudeToWebMercatorFraction.html">czm_latitudeToWebMercatorFraction</a></li><li><a href="czm_luminance.html">czm_luminance</a></li><li><a href="czm_material.html">czm_material</a></li><li><a href="czm_materialInput.html">czm_materialInput</a></li><li><a href="czm_model.html">czm_model</a></li><li><a href="czm_modelToWindowCoordinates.html">czm_modelToWindowCoordinates</a></li><li><a href="czm_modelView.html">czm_modelView</a></li><li><a href="czm_modelViewInfiniteProjection.html">czm_modelViewInfiniteProjection</a></li><li><a href="czm_modelViewProjection.html">czm_modelViewProjection</a></li><li><a href="czm_modelViewProjectionRelativeToEye.html">czm_modelViewProjectionRelativeToEye</a></li><li><a href="czm_modelViewRelativeToEye.html">czm_modelViewRelativeToEye</a></li><li><a href="czm_moonDirectionEC.html">czm_moonDirectionEC</a></li><li><a href="czm_morphing.html">czm_morphing</a></li><li><a href="czm_multiplyWithColorBalance.html">czm_multiplyWithColorBalance</a></li><li><a href="czm_normal.html">czm_normal</a></li><li><a href="czm_oneOverPi.html">czm_oneOverPi</a></li><li><a href="czm_oneOverTwoPi.html">czm_oneOverTwoPi</a></li><li><a href="czm_phong.html">czm_phong</a></li><li><a href="czm_pi.html">czm_pi</a></li><li><a href="czm_piOverFour.html">czm_piOverFour</a></li><li><a href="czm_piOverSix.html">czm_piOverSix</a></li><li><a href="czm_piOverThree.html">czm_piOverThree</a></li><li><a href="czm_piOverTwo.html">czm_piOverTwo</a></li><li><a href="czm_pointAlongRay.html">czm_pointAlongRay</a></li><li><a href="czm_projection.html">czm_projection</a></li><li><a href="czm_quadraticRealPolynomialRealRoots.html">czm_quadraticRealPolynomialRealRoots</a></li><li><a href="czm_quadraticRoots.html">czm_quadraticRoots</a></li><li><a href="czm_radiansPerDegree.html">czm_radiansPerDegree</a></li><li><a href="czm_ray.html">czm_ray</a></li><li><a href="czm_rayConeIntersectionInterval.html">czm_rayConeIntersectionInterval</a></li><li><a href="czm_rayConeIntersectNormal.html">czm_rayConeIntersectNormal</a></li><li><a href="czm_rayEllipsoidIntersectionInterval.html">czm_rayEllipsoidIntersectionInterval</a></li><li><a href="czm_rayEllipsoidSilhouetteConeIntersectionInterval.html">czm_rayEllipsoidSilhouetteConeIntersectionInterval</a></li><li><a href="czm_rayEllipsoidSilhouetteHalfspaceIntersectionInterval.html">czm_rayEllipsoidSilhouetteHalfspaceIntersectionInterval</a></li><li><a href="czm_rayHalfspaceIntersectionInterval.html">czm_rayHalfspaceIntersectionInterval</a></li><li><a href="czm_raySegment.html">czm_raySegment</a></li><li><a href="czm_raySegmentCollection.html">czm_raySegmentCollection</a></li><li><a href="czm_raySegmentCollectionCapacity.html">czm_raySegmentCollectionCapacity</a></li><li><a href="czm_raySegmentCollectionNew.html">czm_raySegmentCollectionNew</a></li><li><a href="czm_raySphereIntersectionInterval.html">czm_raySphereIntersectionInterval</a></li><li><a href="czm_removeAt.html">czm_removeAt</a></li><li><a href="czm_scene2D.html">czm_scene2D</a></li><li><a href="czm_scene3D.html">czm_scene3D</a></li><li><a href="czm_snoise.html">czm_snoise</a></li><li><a href="czm_sphere.html">czm_sphere</a></li><li><a href="czm_sphereNormal.html">czm_sphereNormal</a></li><li><a href="global.html#czm_subtraction">czm_subtraction</a></li><li><a href="czm_sunDirectionEC.html">czm_sunDirectionEC</a></li><li><a href="czm_sunDirectionWC.html">czm_sunDirectionWC</a></li><li><a href="czm_temeToPseudoFixed.html">czm_temeToPseudoFixed</a></li><li><a href="czm_threePiOver2.html">czm_threePiOver2</a></li><li><a href="czm_translateRelativeToEye.html">czm_translateRelativeToEye</a></li><li><a href="czm_transpose.html">czm_transpose</a></li><li><a href="czm_twoPi.html">czm_twoPi</a></li><li><a href="czm_view.html">czm_view</a></li><li><a href="czm_viewerPositionWC.html">czm_viewerPositionWC</a></li><li><a href="czm_viewport.html">czm_viewport</a></li><li><a href="czm_viewportOrthographic.html">czm_viewportOrthographic</a></li><li><a href="czm_viewportTransformation.html">czm_viewportTransformation</a></li><li><a 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</div>
<div class="nav navStatic"></div>
<div id="main">
<h1 class="page-title">Occluder</h1>
<section>
<header>
<h2>
Occluder
</h2>
</header>
<article>
<div class="container-overview">
<dt>
<h4 class="name" id="Occluder"><span class="type-signature"></span>new Occluder</h4>
</dt>
<dd>
<p class="description">
Creates an Occluder derived from an object's position and radius, as well as the camera position.
The occluder can be used to determine whether or not other objects are visible or hidden behind the
visible horizon defined by the occluder and camera position.
</p>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>occluderBoundingSphere</code></td>
<td class="type">
<a href="BoundingSphere.html">BoundingSphere</a>
</td>
<td class="description last">The bounding sphere surrounding the occluder.</td>
</tr>
<tr>
<td class="name"><code>cameraPosition</code></td>
<td class="type">
<a href="Cartesian3.html">Cartesian3</a>
</td>
<td class="description last">The coordinate of the viewer/camera.</td>
</tr>
</tbody>
</table>
<h5>Throws:</h5>
<ul>
<li>
<div class="param-desc">
<span class="param-type"><a href="DeveloperError.html">DeveloperError</a></span>
: <code>occluderBoundingSphere</code> is required.
</div>
</li>
<li>
<div class="param-desc">
<span class="param-type"><a href="DeveloperError.html">DeveloperError</a></span>
: <code>cameraPosition</code> is required.
</div>
</li>
</ul>
<h5>Example</h5>
<pre class="code brush: js">// Construct an occluder one unit away from the origin with a radius of one.
var cameraPosition = new Cartesian3.ZERO;
var occluderBoundingSphere = new BoundingSphere(new Cartesian3(0, 0, -1), 1);
var occluder = new Occluder(occluderBoundingSphere, cameraPosition);</pre>
<dl class="details">
<!--
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>../../Source/Core/Occluder.js, line 41</li></ul></dd>
-->
</dl>
<div class="hr"></div>
</dd>
</div>
<h3 class="subsection-title">Methods</h3>
<dl>
<dt>
<h4 class="name" id="getPosition"><span class="type-signature"></span>getPosition</h4>
</dt>
<dd>
<p class="description">
Returns the position of the occluder.
</p>
<h5>Returns:</h5>
<div class="param-desc">
<span class="param-type"><a href="Cartesian3.html">Cartesian3</a></span>
The position of the occluder.
</div>
<dl class="details">
<!--
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>../../Source/Core/Occluder.js, line 69</li></ul></dd>
-->
</dl>
<div class="hr"></div>
</dd>
<dt>
<h4 class="name" id="getVisibility"><span class="type-signature"></span>getVisibility</h4>
</dt>
<dd>
<p class="description">
Determine to what extent an occludee is visible (not visible, partially visible, or fully visible).
</p>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>occludeeBS</code></td>
<td class="type">
<a href="BoundingSphere.html">BoundingSphere</a>
</td>
<td class="description last"></td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="param-desc">
<span class="param-type"><a href="Enumeration.html">Enumeration</a></span>
Visibility.NONE if the occludee is not visible,
Visibility.PARTIAL if the occludee is partially visible, or
Visibility.FULL if the occludee is fully visible.
</div>
<h5>Example</h5>
<pre class="code brush: js">var sphere1 = new BoundingSphere(new Cartesian3(0, 0, -1.5), 0.5);
var sphere2 = new BoundingSphere(new Cartesian3(0, 0, -2.5), 0.5);
var cameraPosition = new Cartesian3(0, 0, 0);
var occluder = new Occluder(sphere1, cameraPosition);
occluder.getVisibility(sphere2); //returns Visibility.NONE</pre>
<dl class="details">
<!--
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>../../Source/Core/Occluder.js, line 224</li></ul></dd>
-->
<h5>See:</h5>
<ul class="see-list">
<li>Occluder#isVisible</li>
</ul>
</dl>
<div class="hr"></div>
</dd>
<dt>
<h4 class="name" id="isBoundingSphereVisible"><span class="type-signature"></span>isBoundingSphereVisible</h4>
</dt>
<dd>
<p class="description">
Determines whether or not a sphere, the <code>occludee</code>, is hidden from view by the occluder.
</p>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>occludee</code></td>
<td class="type">
<a href="BoundingSphere.html">BoundingSphere</a>
</td>
<td class="description last">The bounding sphere surrounding the occludee object.</td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="param-desc">
<span class="param-type">boolean</span>
<code>true</code> if the occludee is visible; otherwise <code>false</code>.
</div>
<h5>Example</h5>
<pre class="code brush: js">var cameraPosition = new Cartesian3(0, 0, 0);
var littleSphere = new BoundingSphere(new Cartesian3(0, 0, -1), 0.25);
var occluder = new Occluder(littleSphere, cameraPosition);
var bigSphere = new BoundingSphere(new Cartesian3(0, 0, -3), 1);
occluder.isBoundingSphereVisible(bigSphere); //returns true</pre>
<dl class="details">
<!--
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>../../Source/Core/Occluder.js, line 165</li></ul></dd>
-->
<h5>See:</h5>
<ul class="see-list">
<li><a href="Occluder.html#getVisibility">Occluder#getVisibility</a></li>
</ul>
</dl>
<div class="hr"></div>
</dd>
<dt>
<h4 class="name" id="isPointVisible"><span class="type-signature"></span>isPointVisible</h4>
</dt>
<dd>
<p class="description">
Determines whether or not a point, the <code>occludee</code>, is hidden from view by the occluder.
</p>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>occludee</code></td>
<td class="type">
<a href="Cartesian3.html">Cartesian3</a>
</td>
<td class="description last">The point surrounding the occludee object.</td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="param-desc">
<span class="param-type">boolean</span>
<code>true</code> if the occludee is visible; otherwise <code>false</code>.
</div>
<h5>Example</h5>
<pre class="code brush: js">var cameraPosition = new Cartesian3(0, 0, 0);
var littleSphere = new BoundingSphere(new Cartesian3(0, 0, -1), 0.25);
var occluder = new Occluder(littleSphere, cameraPosition);
var point = new Cartesian3(0, 0, -3);
occluder.isPointVisible(point); //returns true</pre>
<dl class="details">
<!--
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>../../Source/Core/Occluder.js, line 133</li></ul></dd>
-->
<h5>See:</h5>
<ul class="see-list">
<li><a href="Occluder.html#getVisibility">Occluder#getVisibility</a></li>
</ul>
</dl>
<div class="hr"></div>
</dd>
<dt>
<h4 class="name" id="computeOccludeePointFromExtent"><span class="type-signature">&lt;static> </span>computeOccludeePointFromExtent</h4>
</dt>
<dd>
<p class="description">
Computes a point that can be used as the occludee position to the visibility functions from an extent.
</p>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Argument</th>
<th>Default</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>extent</code></td>
<td class="type">
<a href="Extent.html">Extent</a>
</td>
<td class="attributes">
</td>
<td class="default">
</td>
<td class="description last">The extent used to create a bounding sphere.</td>
</tr>
<tr>
<td class="name"><code>ellipsoid</code></td>
<td class="type">
<a href="Ellipsoid.html">Ellipsoid</a>
</td>
<td class="attributes">
&lt;optional><br>
</td>
<td class="default">
Ellipsoid.WGS84
</td>
<td class="description last">The ellipsoid used to determine positions of the extent.</td>
</tr>
</tbody>
</table>
<h5>Throws:</h5>
<div class="param-desc">
<span class="param-type"><a href="DeveloperError.html">DeveloperError</a></span>
: extent is required.
</div>
<h5>Returns:</h5>
<div class="param-desc">
<span class="param-type">Object</span>
An object containing two attributes: <code>occludeePoint</code> and <code>valid</code>
which is a boolean value.
</div>
<dl class="details">
<!--
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>../../Source/Core/Occluder.js, line 371</li></ul></dd>
-->
</dl>
<div class="hr"></div>
</dd>
<dt>
<h4 class="name" id="getOccludeePoint"><span class="type-signature">&lt;static> </span>getOccludeePoint</h4>
</dt>
<dd>
<p class="description">
Computes a point that can be used as the occludee position to the visibility functions.
Use a radius of zero for the occludee radius. Typically, a user computes a bounding sphere around
an object that is used for visibility; however it is also possible to compute a point that if
seen/not seen would also indicate if an object is visible/not visible. This function is better
called for objects that do not move relative to the occluder and is large, such as a chunk of
terrain. You are better off not calling this and using the object's bounding sphere for objects
such as a satellite or ground vehicle.
</p>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>occluderBoundingSphere</code></td>
<td class="type">
<a href="BoundingSphere.html">BoundingSphere</a>
</td>
<td class="description last">The bounding sphere surrounding the occluder.</td>
</tr>
<tr>
<td class="name"><code>occludeePosition</code></td>
<td class="type">
<a href="Cartesian3.html">Cartesian3</a>
</td>
<td class="description last">The point where the occludee (bounding sphere of radius 0) is located.</td>
</tr>
<tr>
<td class="name"><code>positions</code></td>
<td class="type">
Array
</td>
<td class="description last">List of altitude points on the horizon near the surface of the occluder.</td>
</tr>
</tbody>
</table>
<h5>Throws:</h5>
<ul>
<li>
<div class="param-desc">
<span class="param-type"><a href="DeveloperError.html">DeveloperError</a></span>
: <code>positions</code> is a required, non-empty array.
</div>
</li>
<li>
<div class="param-desc">
<span class="param-type"><a href="DeveloperError.html">DeveloperError</a></span>
: <code>occluderBoundingSphere</code> is required.
</div>
</li>
<li>
<div class="param-desc">
<span class="param-type"><a href="DeveloperError.html">DeveloperError</a></span>
: <code>occludeePosition</code> must have a value other than <code>occluderBoundingSphere.center</code>.
</div>
</li>
</ul>
<h5>Returns:</h5>
<div class="param-desc">
<span class="param-type">Object</span>
An object containing two attributes: <code>occludeePoint</code> and <code>valid</code>
which is a boolean value.
</div>
<h5>Example</h5>
<pre class="code brush: js">var cameraPosition = new Cartesian3(0, 0, 0);
var occluderBoundingSphere = new BoundingSphere(new Cartesian3(0, 0, -8), 2);
var occluder = new Occluder(occluderBoundingSphere, cameraPosition);
var positions = [new Cartesian3(-0.25, 0, -5.3), new Cartesian3(0.25, 0, -5.3)];
var tileOccluderSphere = BoundingSphere.fromPoints(positions);
var occludeePosition = tileOccluderSphere.center;
var occludeePt = occluder.getOccludeePoint(occluderBoundingSphere, occludeePosition, positions);</pre>
<dl class="details">
<!--
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>../../Source/Core/Occluder.js, line 302</li></ul></dd>
-->
</dl>
<div class="hr"></div>
</dd>
<dt>
<h4 class="name" id="prototype.getRadius"><span class="type-signature">&lt;static> </span>prototype.getRadius</h4>
</dt>
<dd>
<p class="description">
Returns the radius of the occluder.
</p>
<h5>Returns:</h5>
<div class="param-desc">
<span class="param-type">Number</span>
The radius of the occluder.
</div>
<dl class="details">
<!--
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>../../Source/Core/Occluder.js, line 78</li></ul></dd>
-->
</dl>
<div class="hr"></div>
</dd>
<dt>
<h4 class="name" id="prototype.setCameraPosition"><span class="type-signature">&lt;static> </span>prototype.setCameraPosition</h4>
</dt>
<dd>
<p class="description">
Sets the position of the camera.
</p>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>cameraPosition</code></td>
<td class="type">
<a href="Cartesian3.html">Cartesian3</a>
</td>
<td class="description last">The new position of the camera.</td>
</tr>
</tbody>
</table>
<dl class="details">
<!--
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>../../Source/Core/Occluder.js, line 87</li></ul></dd>
-->
</dl>
<div class="hr"></div>
</dd>
</dl>
</article>
</section>
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