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 # Class Distance

 Last update: 16.07.2025 

Namespace: [VM.Managed.DAFUL.Constraints](VM.Managed.DAFUL.Constraints.md)  
Assembly: VMDCP.dll

This class is to represent the distance constraint.

```csharp
public class Distance : Constraint<PropertyDistance>, IObservableObject, IDisposableObject, ILinkable, ILinkContainerEvent, IVerifiable, IHistoryObjectSerializable, IAttributeContainer, IContainer, IEntity, IEntityBase, IObjectBase, IObject, ILinkContainer, IOwned, IHasID, IEventProvider, IHasKeyObject, IHasName, IEnabled, IHasComment, IVisible, IDocumentOwner, INamed, INavigatorItem, IVisible, IMultiChangable, IHasProperty, IGroup, IDraw, IDrawIcon, IReferencable, ITransformable, IConnector, IEntityRelation, IGenerable, IArgument, IReportable, IFlip, IEnableForSimulationScenario, ITorqueReferenceForBearing

```

#### Inheritance

[object](https://learn.microsoft.com/dotnet/api/system.object) ← ObservableObject ← LinkableBase ← ObjectBase ← Object&lt;EntityEventCore&gt; ← ContainerObject&lt;EntityEventCore&gt; ← EntityBase ← Entity&lt;PropertyDistance&gt; ← Connector&lt;PropertyDistance&gt; ← Constraint&lt;PropertyDistance&gt; ← [Distance](VM.Managed.DAFUL.Constraints.Distance.md)

#### Implements

IObservableObject, IDisposableObject, ILinkable, ILinkContainerEvent, IVerifiable, IHistoryObjectSerializable, IAttributeContainer, IContainer, IEntity, IEntityBase, IObjectBase, IObject, ILinkContainer, IOwned, IHasID, IEventProvider, IHasKeyObject, IHasName, IEnabled, IHasComment, IVisible, IDocumentOwner, INamed, INavigatorItem, IVisible, IMultiChangable, IHasProperty, IGroup, IDraw, IDrawIcon, IReferencable, ITransformable, IConnector, IEntityRelation, IGenerable, IArgument, IReportable, IFlip, IEnableForSimulationScenario, ITorqueReferenceForBearing

#### Inherited Members

Constraint&lt;PropertyDistance&gt;.Initialize(Unit.ConvertFactor), Constraint&lt;PropertyDistance&gt;.Generable, Connector&lt;PropertyDistance&gt;.Initialize(Unit.ConvertFactor), Connector&lt;PropertyDistance&gt;.GetTargetListForUpdate(), Connector&lt;PropertyDistance&gt;.Verify(VerifiedResult), Connector&lt;PropertyDistance&gt;.LinkRequestUpdate(object, LinkEventArgs), Connector&lt;PropertyDistance&gt;.GetModelNavigatorInformationImpl(XmlDocument, XmlElement, bool), Connector&lt;PropertyDistance&gt;.Draw(Canvas), Connector&lt;PropertyDistance&gt;.ReDraw(), Connector&lt;PropertyDistance&gt;.FindLocal(string), Connector&lt;PropertyDistance&gt;.Instantiate(Reference, Canvas), Connector&lt;PropertyDistance&gt;.MakeReference(LinkedList&lt;Reference&gt;), Connector&lt;PropertyDistance&gt;.MakeReferenceImpl(LinkedList&lt;Reference&gt;), Connector&lt;PropertyDistance&gt;.GetLayerImpl(), Connector&lt;PropertyDistance&gt;.SetLayerImpl(Layer), Connector&lt;PropertyDistance&gt;.SwitchImpl(), Connector&lt;PropertyDistance&gt;.BaseMarker, Connector&lt;PropertyDistance&gt;.ActionMarker, Connector&lt;PropertyDistance&gt;.ConnectorReferenceMarker, Connector&lt;PropertyDistance&gt;.PreventDuplicatedRBE, Connector&lt;PropertyDistance&gt;.Generable, Connector&lt;PropertyDistance&gt;.HasLayerExplicitly, Connector&lt;PropertyDistance&gt;.Hide, Connector&lt;PropertyDistance&gt;.Referencable, Connector&lt;PropertyDistance&gt;.Visible, Connector&lt;PropertyDistance&gt;.Layer, Connector&lt;PropertyDistance&gt;.ReferenceType, Connector&lt;PropertyDistance&gt;.ArgumentType, Connector&lt;PropertyDistance&gt;.CanWriteToOutFileImpl, Connector&lt;PropertyDistance&gt;.ReportTypeImpl, Connector&lt;PropertyDistance&gt;.CanSwitchImpl, Entity&lt;PropertyDistance&gt;.Initialize(Unit.ConvertFactor), Entity&lt;PropertyDistance&gt;.GetUnnamedObjectName(object), Entity&lt;PropertyDistance&gt;.FindLocal(string), Entity&lt;PropertyDistance&gt;.Property, EntityBase.Initialize(Unit.ConvertFactor), EntityBase.SetOldNameWithNewEntity(ObjectBase, ObjectBase), EntityBase.PropertyRequestUpdate(object, LinkEventArgs), EntityBase.OnDeserializationForAttribute(), EntityBase.OnUpdatePropertyImpl(Property, LinkEventArgs), EntityBase.LinkRequestDestroying(object, LinkEventArgs), EntityBase.GetModelNavigatorInformationImpl(XmlDocument, XmlElement, bool), EntityBase.FixUp(ObjectBase), EntityBase.FindLocal(string), EntityBase.WriteTemplateImpl(XmlWriter), EntityBase.ReadTemplateImpl(XmlReader), EntityBase.LinkAddedToDocument(object, AddToDocEventArgs), EntityBase.OnDeserialization(object), EntityBase.Name, EntityBase.FullName, EntityBase.NonSymmetricName, EntityBase.DisplayName, EntityBase.IsEnabled, EntityBase.Comment, EntityBase.HasLayerExplicitly, EntityBase.UntypedProperty, EntityBase.IsFileProperty, EntityBase.Layer, EntityBase.IsVisible, ContainerObject&lt;EntityEventCore&gt;.Find(string), ContainerObject&lt;EntityEventCore&gt;.FindLocal(string), ContainerObject&lt;EntityEventCore&gt;.GetUnnamedObjectName(object), ContainerObject&lt;EntityEventCore&gt;.GetNewEntityName(string), ContainerObject&lt;EntityEventCore&gt;.GetNewEntityName(string, bool, int), ContainerObject&lt;EntityEventCore&gt;.GetNewEntityName(string, bool, int, int), Object&lt;EntityEventCore&gt;.GetKey(), Object&lt;EntityEventCore&gt;.Initialize(Unit.ConvertFactor), Object&lt;EntityEventCore&gt;.SetIconColor(Canvas), Object&lt;EntityEventCore&gt;.OnDeserialization(object), Object&lt;EntityEventCore&gt;.CustomGetObjectData(SerializationInfo, StreamingContext), Object&lt;EntityEventCore&gt;.RollbackEvent(), Object&lt;EntityEventCore&gt;.OnDeserializedCore(object), Object&lt;EntityEventCore&gt;.Key, Object&lt;EntityEventCore&gt;.UntypedEventCore, Object&lt;EntityEventCore&gt;.EventCore, Object&lt;EntityEventCore&gt;.Attributes, ObjectBase.ReplaceEventCore(ObjectEventCore), ObjectBase.SetModifiedCore(ModifiedResult.ModifiedType), ObjectBase.AddPostDeserialize(StreamingContext), ObjectBase.LinkAddedToDocumentCore(IOwned, bool), ObjectBase.SetModified(ModifiedResult.ModifiedType), ObjectBase.SetModified(), ObjectBase.SetModified(ModifiedResult.ModifiedType, IDocument), ObjectBase.DestroyObject(object, LinkEventArgs), ObjectBase.DestroyObject(DestroyEventArgs), ObjectBase.DestroyObject(), ObjectBase.Initialize(Unit.ConvertFactor), ObjectBase.FixUp(ObjectBase), ObjectBase.DoWorkAfterUpdateContents(), ObjectBase.SetOldNameWithNewEntity(ObjectBase, ObjectBase), ObjectBase.SetIconColor(Canvas), ObjectBase.RemoveFromCreatedList(), ObjectBase.PostAddToDocument(), ObjectBase.PostRemoveFromDocument(Document), ObjectBase.GetArgumentList(LinkedList&lt;ObjectBase&gt;), ObjectBase.ResetInvalidEntity(), ObjectBase.OnDeserialization(object), ObjectBase.IsSerializableEvent(Delegate), ObjectBase.CustomGetObjectData(SerializationInfo, StreamingContext), ObjectBase.CheckAndUpdateLink(HashSet&lt;ObjectBase&gt;), ObjectBase.Verify(VerifiedResult), ObjectBase.ConnectProxy(), ObjectBase.RollbackEvent(), ObjectBase.LinkRequestUpdating(object, LinkEventArgs), ObjectBase.LinkRequestUpdate(object, LinkEventArgs), ObjectBase.LinkRequestDestroying(object, LinkEventArgs), ObjectBase.LinkRequestDestroy(object, LinkEventArgs), ObjectBase.LinkAddedToDocument(object, AddToDocEventArgs), ObjectBase.LinkRemovedFromDocument(object, RemoveFromDocEventArgs), ObjectBase.DisposeManagedResources(), ObjectBase.GetDestroyEventExtraData(), ObjectBase.OnLinkReserved(ILink, object, EventArgs), ObjectBase.CreateEntityWhenUpdateContents(Action), ObjectBase.GetObjectByKey(UIntPtr), ObjectBase.FindObjectOnXmlDeserialize(string), ObjectBase.UpdateContents(XmlReader, ObjectBase, string), ObjectBase.UpdateContents(XmlReader, ObjectBase), ObjectBase.UpdateContents(string, string), ObjectBase.UpdateContents(string), ObjectBase.SetFlagWhenXMLFile(string, bool), ObjectBase.IsEqualArray&lt;T&gt;(T\[\], T\[\]), ObjectBase.IsEqualList(List&lt;double&gt;, List&lt;double&gt;), ObjectBase.SetContainer(IOwned, bool), ObjectBase.GetTargetListForUpdate(), ObjectBase.SkipUpdateObjectImpl(), ObjectBase.raise\_OnUpdating(object, LinkEventArgs), ObjectBase.raise\_OnUpdate(object, LinkEventArgs), ObjectBase.raise\_OnDestroying(object, LinkEventArgs), ObjectBase.raise\_OnDestroy(object, LinkEventArgs), ObjectBase.raise\_Destroying(object, Identifier), ObjectBase.raise\_OnAdded(object, AddToDocEventArgs), ObjectBase.raise\_OnRemoved(object, RemoveFromDocEventArgs), ObjectBase.raise\_OnContentsUpdated(object, EventArgs), ObjectBase.Dispose(bool), ObjectBase.SkipModified, ObjectBase.ClearChildInfoBeforeDeserialize, ObjectBase.KeyImpl, ObjectBase.ID, ObjectBase.TopologyEntityTypeName, ObjectBase.ObjectStateForCircularError, ObjectBase.ObjectState, ObjectBase.IsChildExternable, ObjectBase.IsExternable, ObjectBase.Container, ObjectBase.Owner, ObjectBase.Document, ObjectBase.UntypedEventCore, ObjectBase.KernelKey, ObjectBase.Key, ObjectBase.OnContentsUpdated, ObjectBase.OnRemoved, ObjectBase.OnAdded, ObjectBase.Destroying, ObjectBase.OnDestroy, ObjectBase.OnDestroying, ObjectBase.OnUpdate, ObjectBase.OnUpdating, LinkableBase.OnDeserialization(object), 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

### Distance()

Initializes a new instance of the  class.

```csharp
public Distance()

```

### Distance(string)

Initializes a new instance of the  class.

```csharp
public Distance(string strName)

```

#### Parameters

`strName` [string](https://learn.microsoft.com/dotnet/api/system.string)

Name of the distance constraint.

## Properties

### DistanceLength

Gets or sets the length.

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

```

#### Property Value

ExpressionValueVariable

### PreventDuplicatedRBE

Gets a value whether this instance prevent duplicated RBE.

```csharp
public override bool PreventDuplicatedRBE { get; }

```

#### Property Value

[bool](https://learn.microsoft.com/dotnet/api/system.boolean)

### ReportTypeImpl

Gets the report type.

```csharp
protected override IReportable.ReportEntityType ReportTypeImpl { get; }

```

#### Property Value

IReportable.ReportEntityType

## Methods

### Draw(Canvas)

Draws the icon.

```csharp
public override void Draw(Canvas canvas)

```

#### Parameters

`canvas` Canvas

The canvas has icon information.

### Initialize(ConvertFactor)

Initializes member through unit convert factor.

```csharp
public override void Initialize(Unit.ConvertFactor factor)

```

#### Parameters

`factor` Unit.ConvertFactor

The unit convert factor.

### ReadTemplateImpl(XmlReader)

Reads the template document \[implementation\].

```csharp
protected override void ReadTemplateImpl(XmlReader reader)

```

#### Parameters

`reader` [XmlReader](https://learn.microsoft.com/dotnet/api/system.xml.xmlreader)

The reader.

### WriteTemplateImpl(XmlWriter)

Writes the template document \[implementation\].

```csharp
protected override void WriteTemplateImpl(XmlWriter writer)

```

#### Parameters

`writer` [XmlWriter](https://learn.microsoft.com/dotnet/api/system.xml.xmlwriter)

The writer.