## On this page # Class ContactGeom2D Last update: 16.07.2025 Namespace: [VM.Managed.DAFUL.Contact](VM.Managed.DAFUL.Contact.md) Assembly: VMDCt.dll This class is to represent the 2D contact geometry. ```csharp public class ContactGeom2D : ContactGeomBase, 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, IContactGeometry2D, IContactGeometry ``` #### Inheritance [object](https://learn.microsoft.com/dotnet/api/system.object) ← ObservableObject ← LinkableBase ← ObjectBase ← Object<EntityEventCore> ← ContainerObject<EntityEventCore> ← EntityBase ← Entity<PropertyContactGeom2D> ← [ContactGeomBase<PropertyContactGeom2D>](VM.Managed.DAFUL.Contact.ContactGeomBase-1.md) ← [ContactGeom2D](VM.Managed.DAFUL.Contact.ContactGeom2D.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, IContactGeometry2D, IContactGeometry #### Inherited Members [ContactGeomBase<PropertyContactGeom2D>.Initialize(Unit.ConvertFactor)](VM.Managed.DAFUL.Contact.ContactGeomBase-1.md#VM_Managed_DAFUL_Contact_ContactGeomBase_1_Initialize_VM_Unit_ConvertFactor_), [ContactGeomBase<PropertyContactGeom2D>.FindLocal(string)](VM.Managed.DAFUL.Contact.ContactGeomBase-1.md#VM_Managed_DAFUL_Contact_ContactGeomBase_1_FindLocal_System_String_), [ContactGeomBase<PropertyContactGeom2D>.ReferenceMarker](VM.Managed.DAFUL.Contact.ContactGeomBase-1.md#VM_Managed_DAFUL_Contact_ContactGeomBase_1_ReferenceMarker), [ContactGeomBase<PropertyContactGeom2D>.GeometryFullName](VM.Managed.DAFUL.Contact.ContactGeomBase-1.md#VM_Managed_DAFUL_Contact_ContactGeomBase_1_GeometryFullName), [ContactGeomBase<PropertyContactGeom2D>.HasLayerExplicitly](VM.Managed.DAFUL.Contact.ContactGeomBase-1.md#VM_Managed_DAFUL_Contact_ContactGeomBase_1_HasLayerExplicitly), Entity<PropertyContactGeom2D>.Initialize(Unit.ConvertFactor), Entity<PropertyContactGeom2D>.GetUnnamedObjectName(object), Entity<PropertyContactGeom2D>.FindLocal(string), Entity<PropertyContactGeom2D>.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<EntityEventCore>.Find(string), ContainerObject<EntityEventCore>.FindLocal(string), ContainerObject<EntityEventCore>.GetUnnamedObjectName(object), ContainerObject<EntityEventCore>.GetNewEntityName(string), ContainerObject<EntityEventCore>.GetNewEntityName(string, bool, int), ContainerObject<EntityEventCore>.GetNewEntityName(string, bool, int, int), Object<EntityEventCore>.GetKey(), Object<EntityEventCore>.Initialize(Unit.ConvertFactor), Object<EntityEventCore>.SetIconColor(Canvas), Object<EntityEventCore>.OnDeserialization(object), Object<EntityEventCore>.CustomGetObjectData(SerializationInfo, StreamingContext), Object<EntityEventCore>.RollbackEvent(), Object<EntityEventCore>.OnDeserializedCore(object), Object<EntityEventCore>.Key, Object<EntityEventCore>.UntypedEventCore, Object<EntityEventCore>.EventCore, Object<EntityEventCore>.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<ObjectBase>), ObjectBase.ResetInvalidEntity(), ObjectBase.OnDeserialization(object), ObjectBase.IsSerializableEvent(Delegate), ObjectBase.CustomGetObjectData(SerializationInfo, StreamingContext), ObjectBase.CheckAndUpdateLink(HashSet<ObjectBase>), 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<T>(T\[\], T\[\]), ObjectBase.IsEqualList(List<double>, List<double>), 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<T>(object, LinkPropertyType)](VM.Models.Pre.Cache.LinkPropertyItemCache.md#VM_Models_Pre_Cache_LinkPropertyItemCache_GetLinkedObjects__1_System_Object_VM_Models_Pre_LinkPropertyType_) ## Constructors ### ContactGeom2D() Initializes a new instance of the class. ```csharp protected ContactGeom2D() ``` ### ContactGeom2D(string) Initializes a new instance of the class. ```csharp public ContactGeom2D(string strName) ``` #### Parameters `strName` [string](https://learn.microsoft.com/dotnet/api/system.string) Name of the 2D contact geometry . ## Properties ### Geometry Gets or sets the geometry. ```csharp public IContactable Geometry { get; set; } ``` #### Property Value IContactable ### GeometryFullName Gets the full name of the geometry. ```csharp public override string GeometryFullName { get; } ``` #### Property Value [string](https://learn.microsoft.com/dotnet/api/system.string) ### MaxPenetration Gets or sets the maximum penetration. ```csharp public ExpressionValueVariable MaxPenetration { get; set; } ``` #### Property Value ExpressionValueVariable ### ParentBody Gets or sets the geometry. ```csharp public ObjectBase ParentBody { get; } ``` #### Property Value ObjectBase ### \_Geometry Gets or sets the geometry. ```csharp public Linker _Geometry { get; set; } ``` #### Property Value Linker<IContactable> ## Methods ### GetModelNavigatorInformationImpl(XmlDocument, XmlElement, bool) Gets the object information for model navigator \[implementation\]. ```csharp protected override bool GetModelNavigatorInformationImpl(XmlDocument xmlDom, XmlElement xmlEle, bool bHasChild) ``` #### Parameters `xmlDom` [XmlDocument](https://learn.microsoft.com/dotnet/api/system.xml.xmldocument) The XmlDocument for object. `xmlEle` [XmlElement](https://learn.microsoft.com/dotnet/api/system.xml.xmlelement) The XmlElement for object. `bHasChild` [bool](https://learn.microsoft.com/dotnet/api/system.boolean) if set to `true` \[has child\]. #### Returns [bool](https://learn.microsoft.com/dotnet/api/system.boolean) `true` if success; otherwise, `false`. ### GetPointDirection(ref VectorBase, ref VectorBase) Gets the point direction. ```csharp public bool GetPointDirection(ref VectorBase point, ref VectorBase direction) ``` #### Parameters `point` VectorBase The point. `direction` VectorBase The direction. #### Returns [bool](https://learn.microsoft.com/dotnet/api/system.boolean) `true` if success; otherwise, `false`. ### GetPointDirectionOnGeometry(ref VectorBase, ref VectorBase) Gets the point direction. ```csharp public bool GetPointDirectionOnGeometry(ref VectorBase point, ref VectorBase direction) ``` #### Parameters `point` VectorBase The normal origin point. `direction` VectorBase The normal direction. #### Returns [bool](https://learn.microsoft.com/dotnet/api/system.boolean) `true` if success; otherwise, `false`. ### LinkRequestDestroying(object, LinkEventArgs) Request for destroying the linked object. ```csharp protected override void LinkRequestDestroying(object objNotifier, LinkEventArgs arg) ``` #### Parameters `objNotifier` [object](https://learn.microsoft.com/dotnet/api/system.object) The linked object. `arg` LinkEventArgs The instance containing the event data. ### LinkRequestUpdate(object, LinkEventArgs) Request for update the linked object. ```csharp protected override void LinkRequestUpdate(object objNotifier, LinkEventArgs arg) ``` #### Parameters `objNotifier` [object](https://learn.microsoft.com/dotnet/api/system.object) The linked object. `arg` LinkEventArgs The instance containing the event data.