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 # Class SectionGeometryHollowCircular

 Last update: 09.03.2026 

<a id="VM_Managed_DAFUL_GearTrain_SectionGeometryHollowCircular"></a>

Namespace: [VM.Managed.DAFUL.GearTrain](VM.Managed.DAFUL.GearTrain.md)  
Assembly: VMDGearTrain.dll

The Hollow Circular Geometry Section

```csharp
public class SectionGeometryHollowCircular : SectionGeometryBase, IObservableObject, IDisposableObject, ILinkable, IObject, ILinkContainer, IOwned, IHasID, IEventProvider, ILinkContainerEvent, IVerifiable

```

#### Inheritance

object ← ObservableObject ← [LinkableBase](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/Pre/Data/VM.Models.Pre/Models/LinkableBase.cs) ← LinkContainer ← [SectionGeometryBase](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.md) ← [SectionGeometryHollowCircular](VM.Managed.DAFUL.GearTrain.SectionGeometryHollowCircular.md)

#### Implements

IObservableObject, IDisposableObject, ILinkable, IObject, ILinkContainer, IOwned, IHasID, IEventProvider, ILinkContainerEvent, IVerifiable

#### Inherited Members

[SectionGeometryBase.InitChild()](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.md#VM_Managed_DAFUL_GearTrain_SectionGeometryBase_InitChild), [SectionGeometryBase.OnDeserialization(object)](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.md#VM_Managed_DAFUL_GearTrain_SectionGeometryBase_OnDeserialization_System_Object_), [SectionGeometryBase.GetBuilder(BuilderColor, VectorBase)](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.md#VM_Managed_DAFUL_GearTrain_SectionGeometryBase_GetBuilder_VM_Managed_CAD_BuilderColor_VM_Managed_VectorBase_), [SectionGeometryBase.SplitSectionInfo(HiddenShaftSetDocument, string, int)](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.md#VM_Managed_DAFUL_GearTrain_SectionGeometryBase_SplitSectionInfo_VM_Managed_DAFUL_GearTrain_HiddenShaftSetDocument_System_String_System_Int32_), [SectionGeometryBase.GetGeomInfo()](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.md#VM_Managed_DAFUL_GearTrain_SectionGeometryBase_GetGeomInfo), [SectionGeometryBase.GetLengthAndHeight(ref double, ref double)](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.md#VM_Managed_DAFUL_GearTrain_SectionGeometryBase_GetLengthAndHeight_System_Double__System_Double__), [SectionGeometryBase.GetSectionBuilder(double, List&lt;Vector&gt;)](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.md#VM_Managed_DAFUL_GearTrain_SectionGeometryBase_GetSectionBuilder_System_Double_System_Collections_Generic_List_VM_Managed_Vector__), [SectionGeometryBase.GetSectionPoint(double, List&lt;Vector&gt;, List&lt;Vector&gt;)](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.md#VM_Managed_DAFUL_GearTrain_SectionGeometryBase_GetSectionPoint_System_Double_System_Collections_Generic_List_VM_Managed_Vector__System_Collections_Generic_List_VM_Managed_Vector__), [SectionGeometryBase.GetNewStartPointWithEccentricity(PointBase, VectorBase)](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.md#VM_Managed_DAFUL_GearTrain_SectionGeometryBase_GetNewStartPointWithEccentricity_VM_Managed_PointBase_VM_Managed_VectorBase_), [SectionGeometryBase.GetNewStartPointWithEccentricity(VectorBase, VectorBase)](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.md#VM_Managed_DAFUL_GearTrain_SectionGeometryBase_GetNewStartPointWithEccentricity_VM_Managed_VectorBase_VM_Managed_VectorBase_), [SectionGeometryBase.SamePositionVector(VectorBase, VectorBase)](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.md#VM_Managed_DAFUL_GearTrain_SectionGeometryBase_SamePositionVector_VM_Managed_VectorBase_VM_Managed_VectorBase_), [SectionGeometryBase.GetBottomAndTopPosition(VectorBase, ref VectorBase, ref VectorBase)](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.md#VM_Managed_DAFUL_GearTrain_SectionGeometryBase_GetBottomAndTopPosition_VM_Managed_VectorBase_VM_Managed_VectorBase__VM_Managed_VectorBase__), [SectionGeometryBase.GetSectionName(HiddenShaftSetDocument, string, int)](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.md#VM_Managed_DAFUL_GearTrain_SectionGeometryBase_GetSectionName_VM_Managed_DAFUL_GearTrain_HiddenShaftSetDocument_System_String_System_Int32_), [SectionGeometryBase.GetSectionBuilderCore(double, List&lt;Vector&gt;)](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.md#VM_Managed_DAFUL_GearTrain_SectionGeometryBase_GetSectionBuilderCore_System_Double_System_Collections_Generic_List_VM_Managed_Vector__), [SectionGeometryBase.InnerCreateParameter()](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.md#VM_Managed_DAFUL_GearTrain_SectionGeometryBase_InnerCreateParameter), [SectionGeometryBase.InnerFillParameter(BuilderParamBase, BuilderColor, VectorBase)](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.md#VM_Managed_DAFUL_GearTrain_SectionGeometryBase_InnerFillParameter_VM_CAD_Builders_BuilderParamBase_VM_Managed_CAD_BuilderColor_VM_Managed_VectorBase_), [SectionGeometryBase.GetFactorForLength()](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.md#VM_Managed_DAFUL_GearTrain_SectionGeometryBase_GetFactorForLength), [SectionGeometryBase.Length](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.md#VM_Managed_DAFUL_GearTrain_SectionGeometryBase_Length), [SectionGeometryBase.Eccentricity](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.md#VM_Managed_DAFUL_GearTrain_SectionGeometryBase_Eccentricity), [SectionGeometryBase.TypeOfGeometry](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.md#VM_Managed_DAFUL_GearTrain_SectionGeometryBase_TypeOfGeometry), LinkContainer.SetModified(), LinkContainer.raise\_OnUpdating(object, LinkEventArgs), LinkContainer.raise\_OnUpdate(object, LinkEventArgs), LinkContainer.raise\_OnDestroying(object, LinkEventArgs), LinkContainer.raise\_OnDestroy(object, LinkEventArgs), LinkContainer.raise\_OnAdded(object, AddToDocEventArgs), LinkContainer.raise\_OnRemoved(object, RemoveFromDocEventArgs), LinkContainer.GetTargetListForUpdate(), LinkContainer.SkipUpdateObjectImpl(), LinkContainer.Initialize(Unit.ConvertFactor), LinkContainer.SetFlagWhenXMLFile(string, bool), LinkContainer.IsSerializableEvent(Delegate), LinkContainer.CustomGetObjectData(SerializationInfo, StreamingContext), LinkContainer.GetSerializedData(SerializationInfo, StreamingContext), LinkContainer.LinkRequestUpdating(object, LinkEventArgs), LinkContainer.LinkRequestUpdate(object, LinkEventArgs), LinkContainer.LinkRequestDestroying(object, LinkEventArgs), LinkContainer.LinkRequestDestroy(object, LinkEventArgs), LinkContainer.LinkAddedToDocument(object, AddToDocEventArgs), LinkContainer.LinkRemovedFromDocument(object, RemoveFromDocEventArgs), LinkContainer.OnLinkReserved(ILink, object, EventArgs), LinkContainer.CanBeDestroy(object), LinkContainer.DisposeManagedResources(), LinkContainer.SetContainer(IOwned, bool), LinkContainer.OnChildUpdated(object, LinkEventArgs), LinkContainer.OnContainerDestroy(object, LinkEventArgs), LinkContainer.OnDeserialization(object), LinkContainer.Verify(VerifiedResult), LinkContainer.GetCopy(object), LinkContainer.Dispose(bool), LinkContainer.ClearChildInfoBeforeDeserialize, LinkContainer.Container, LinkContainer.Owner, LinkContainer.Document, LinkContainer.ID, LinkContainer.IsChildExternable, LinkContainer.IsExternable, LinkContainer.OnRemoved, LinkContainer.OnAdded, LinkContainer.OnDestroy, LinkContainer.OnDestroying, LinkContainer.OnUpdate, LinkContainer.OnUpdating, [LinkableBase.OnDeserialization(object)](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/Pre/Data/VM.Models.Pre/Models/LinkableBase.cs), ObservableObject.Dispose(), ObservableObject.RaisePropertyChanged(string), ObservableObject.RaisePropertyChanged(string, object, object), ObservableObject.Dispose(bool), ObservableObject.DisposeManagedResources(), ObservableObject.DisposeUnmanagedResources(), ObservableObject.IsDisposed, ObservableObject.TryDisposing, ObservableObject.Disposed, ObservableObject.Disposing, ObservableObject.PropertyChanged

#### Extension Methods

[LinkPropertyItemCache.GetLinkProperties(object, LinkPropertyType)](VM.Models.Pre.Cache.LinkPropertyItemCache.md#VM_Models_Pre_Cache_LinkPropertyItemCache_GetLinkProperties_System_Object_VM_Models_Pre_LinkPropertyType_), [LinkPropertyItemCache.GetLinkPropertiesAndValues(object, LinkPropertyType)](VM.Models.Pre.Cache.LinkPropertyItemCache.md#VM_Models_Pre_Cache_LinkPropertyItemCache_GetLinkPropertiesAndValues_System_Object_VM_Models_Pre_LinkPropertyType_), [LinkPropertyItemCache.GetLinkedObjects&lt;T&gt;(object, LinkPropertyType)](VM.Models.Pre.Cache.LinkPropertyItemCache.md#VM_Models_Pre_Cache_LinkPropertyItemCache_GetLinkedObjects__1_System_Object_VM_Models_Pre_LinkPropertyType_)

## Constructors

### <a id="VM_Managed_DAFUL_GearTrain_SectionGeometryHollowCircular__ctor"></a> SectionGeometryHollowCircular()

Initializes a new instance of the  class.

```csharp
public SectionGeometryHollowCircular()

```

## Properties

### <a id="VM_Managed_DAFUL_GearTrain_SectionGeometryHollowCircular_InnerRadius"></a> InnerRadius

Gets or sets the inner radius.

```csharp
public ExpressionValueVariable InnerRadius { get; set; }

```

#### Property Value

[ExpressionValueVariable](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/Pre/Data/VM.Models.Pre/Models/ExpressionValueVariable.cs)

### <a id="VM_Managed_DAFUL_GearTrain_SectionGeometryHollowCircular_OuterRadius"></a> OuterRadius

Gets or sets the outer radius.

```csharp
public ExpressionValueVariable OuterRadius { get; set; }

```

#### Property Value

[ExpressionValueVariable](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/Pre/Data/VM.Models.Pre/Models/ExpressionValueVariable.cs)

### <a id="VM_Managed_DAFUL_GearTrain_SectionGeometryHollowCircular_TypeOfGeometry"></a> TypeOfGeometry

Gets the type of geometry.

```csharp
public override SectionGeometryBase.GeometryType TypeOfGeometry { get; }

```

#### Property Value

[SectionGeometryBase](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.md).[GeometryType](VM.Managed.DAFUL.GearTrain.SectionGeometryBase.GeometryType.md)

## Methods

### <a id="VM_Managed_DAFUL_GearTrain_SectionGeometryHollowCircular_GetBuilder_VM_Managed_CAD_BuilderColor_VM_Managed_VectorBase_"></a> GetBuilder(BuilderColor, VectorBase)

Gets the builder.

```csharp
public override Builder GetBuilder(BuilderColor color, VectorBase vecOffsetDirection)

```

#### Parameters

`color` BuilderColor

The color.

`vecOffsetDirection` VectorBase

The offset direction.

#### Returns

Builder

### <a id="VM_Managed_DAFUL_GearTrain_SectionGeometryHollowCircular_GetGeomInfo"></a> GetGeomInfo()

Gets the geom information.

```csharp
public override double[] GetGeomInfo()

```

#### Returns

double\[\]

### <a id="VM_Managed_DAFUL_GearTrain_SectionGeometryHollowCircular_GetLengthAndHeight_System_Double__System_Double__"></a> GetLengthAndHeight(ref double, ref double)

Gets the start and end point.

```csharp
public override void GetLengthAndHeight(ref double dLength, ref double dHeight)

```

#### Parameters

`dLength` double

Length of the d.

`dHeight` double

Height of the d.

### <a id="VM_Managed_DAFUL_GearTrain_SectionGeometryHollowCircular_GetSectionBuilder_System_Double_System_Collections_Generic_List_VM_Managed_Vector__"></a> GetSectionBuilder(double, List&lt;Vector&gt;)

Gets the section builder.

```csharp
public override Builder[] GetSectionBuilder(double dSegLen, List<Vector> lstGearSection)

```

#### Parameters

`dSegLen` double

Length of the d seg.

`lstGearSection` List&lt;Vector&gt;

The LST gear section.

#### Returns

Builder\[\]

### <a id="VM_Managed_DAFUL_GearTrain_SectionGeometryHollowCircular_InitChild"></a> InitChild()

Initializes the child.

```csharp
public override void InitChild()

```

### <a id="VM_Managed_DAFUL_GearTrain_SectionGeometryHollowCircular_InnerCreateParameter"></a> InnerCreateParameter()

```csharp
protected override BuilderParamBase InnerCreateParameter()

```

#### Returns

[BuilderParamBase](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Data/VM.CAD.Builders/VM.CAD.Builders/VMAppCore/BuilderParamBase.cs)

### <a id="VM_Managed_DAFUL_GearTrain_SectionGeometryHollowCircular_InnerFillParameter_VM_CAD_Builders_BuilderParamBase_VM_Managed_CAD_BuilderColor_VM_Managed_VectorBase_"></a> InnerFillParameter(BuilderParamBase, BuilderColor, VectorBase)

```csharp
protected override void InnerFillParameter(BuilderParamBase parameter, BuilderColor color, VectorBase vecOffsetDirection)

```

#### Parameters

`parameter` [BuilderParamBase](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Data/VM.CAD.Builders/VM.CAD.Builders/VMAppCore/BuilderParamBase.cs)

`color` BuilderColor

`vecOffsetDirection` VectorBase

### <a id="VM_Managed_DAFUL_GearTrain_SectionGeometryHollowCircular_SplitSectionInfo_VM_Managed_DAFUL_GearTrain_HiddenShaftSetDocument_System_String_System_Int32_"></a> SplitSectionInfo(HiddenShaftSetDocument, string, int)

Splits the section information.

```csharp
public override SectionInfo[] SplitSectionInfo(HiddenShaftSetDocument hiddenDoc, string strName, int nNumber)

```

#### Parameters

`hiddenDoc` [HiddenShaftSetDocument](VM.Managed.DAFUL.GearTrain.HiddenShaftSetDocument.md)

The hidden document.

`strName` string

Name of the string.

`nNumber` int

The n number.

#### Returns

[SectionInfo](VM.Managed.DAFUL.GearTrain.SectionInfo.md)\[\]