# IPCB_CenterDimension interface

A center dimension on a PCB document, which marks the center of an arc or circle with a cross.

```csharp
public interface IPCB_CenterDimension : IPCB_Dimension
```

**Namespace:** PCB · **Assembly:** Altium.SDK.Interfaces

**Inherits:** [IPCB_Primitive](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md) → [IPCB_Group](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Group.md) → [IPCB_Dimension](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md)

## Remarks

A new center dimension has one reference. When its primitives are regenerated, the cross is centered on the center of the arc that this reference refers to, or on the reference point when the reference refers to no object, and the dimension's location is set to that center.

The cross is drawn with two tracks, [`Cross_Vertical_Track`](#cross_vertical_track) and [`Cross_Horizontal_Track`](#cross_horizontal_track), on the dimension's layer with the width [`LineWidth`](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#linewidth). Each track is `Size` long (60 mil by default) and the cross is rotated by `Angle`.

While the referenced arc is not selected, [`MoveByXY`](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#movebyxy) does not move the dimension.

## Properties

| Property | Type | Access | Description |
| --- | --- | --- | --- |
| [Angle](#angle) | `double` | get; set | The rotation of the cross, in degrees, counterclockwise from the horizontal. |

### Angle

The rotation of the cross, in degrees, counterclockwise from the horizontal.

```csharp
double GetState_Angle();
void SetState_Angle(double argValue);
```

**Type:** `double` · **Access:** read/write

The default is 0, at which the arms of the cross are horizontal and vertical. Rotating or mirroring the dimension also rotates or mirrors this angle.

## Methods

| Method | Returns | Description |
| --- | --- | --- |
| [Cross_Horizontal_Track](#cross_horizontal_track) | [IPCB_Track](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Track.md) | Returns the track that draws the horizontal arm of the cross. |
| [Cross_Vertical_Track](#cross_vertical_track) | [IPCB_Track](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Track.md) | Returns the track that draws the vertical arm of the cross. |

### Cross_Horizontal_Track

Returns the track that draws the horizontal arm of the cross.

```csharp
IPCB_Track Cross_Horizontal_Track();
```

**Returns:** [IPCB_Track](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Track.md)

Extension method of `IPCB_CenterDimensionHelper` (`using PCB;`).

When `Angle` is not 0, the arm is rotated by that angle.

### Cross_Vertical_Track

Returns the track that draws the vertical arm of the cross.

```csharp
IPCB_Track Cross_Vertical_Track();
```

**Returns:** [IPCB_Track](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Track.md)

Extension method of `IPCB_CenterDimensionHelper` (`using PCB;`).

When `Angle` is not 0, the arm is rotated by that angle.

## Inherited members

- From [IPCB_Dimension](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md): [ArrowLength](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#arrowlength), [ArrowLineWidth](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#arrowlinewidth), [ArrowPosition](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#arrowposition), [ArrowSize](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#arrowsize), [Bold](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#bold), [DimensionKind](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#dimensionkind), [ExtensionLineWidth](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#extensionlinewidth), [ExtensionOffset](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#extensionoffset), [ExtensionPickGap](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#extensionpickgap), [FontName](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#fontname), [Italic](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#italic), [LineWidth](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#linewidth), [MoveTextByXY](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#movetextbyxy), [MoveTextToXY](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#movetexttoxy), [References](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#references), [References_Add](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#references_add), [References_Count](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#references_count), [References_Delete](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#references_delete), [References_DeleteLast](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#references_deletelast), [References_IndexOf](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#references_indexof), [References_Validate](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#references_validate), [ResetPrefixIfNeeded](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#resetprefixifneeded), [RotateAroundXY](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#rotatearoundxy), [Size](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#size), [Style](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#style), [TextDimensionUnit](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#textdimensionunit), [TextFont](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#textfont), [TextFormat](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#textformat), [TextGap](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#textgap), [TextHeight](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#textheight), [TextLineWidth](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#textlinewidth), [TextPosition](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#textposition), [TextPrecision](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#textprecision), [TextPrefix](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#textprefix), [TextSuffix](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#textsuffix), [TextValue](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#textvalue), [TextWidth](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#textwidth), [TextX](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#textx), [TextY](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#texty), [UseTTFonts](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#usettfonts), [X1Location](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#x1location), [Y1Location](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Dimension.md#y1location)
- From [IPCB_Group](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Group.md): [AddPCBObject](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Group.md#addpcbobject), [FastSetState_XSizeYSize](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Group.md#fastsetstate_xsizeysize), [FreePrimitives](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Group.md#freeprimitives), [GetPrimitiveAt](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Group.md#getprimitiveat), [GetPrimitiveCount](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Group.md#getprimitivecount), [GroupIterator_Create](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Group.md#groupiterator_create), [GroupIterator_Destroy](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Group.md#groupiterator_destroy), [LayerUsed](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Group.md#layerused), [PrimitiveLock](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Group.md#primitivelock), [RemovePCBObject](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Group.md#removepcbobject), [ReplicateWithChildren](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Group.md#replicatewithchildren), [SetState_LayersUsedArray](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Group.md#setstate_layersusedarray), [SetState_XSizeYSize](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Group.md#setstate_xsizeysize), [XLocation](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Group.md#xlocation), [YLocation](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Group.md#ylocation)
- From [IPCB_Primitive](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md): [AllowGlobalEdit](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#allowglobaledit), [BeginModify](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#beginmodify), [Board](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#board), [BoundingRectangle](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#boundingrectangle), [BoundingRectangleChildren](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#boundingrectanglechildren), [BoundingRectangleForPainting](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#boundingrectangleforpainting), [BoundingRectangleForSelection](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#boundingrectangleforselection), [CancelModify](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#cancelmodify), [Component](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#component), [Coordinate](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#coordinate), [DescriptorString](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#descriptorstring), [DetailString](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#detailstring), [Dimension](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#dimension), [DrawAsPreview](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#drawaspreview), [DRCError](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#drcerror), [Enabled](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#enabled), [Enabled_Direct](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#enabled_direct), [Enabled_vComponent](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#enabled_vcomponent), [Enabled_vCoordinate](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#enabled_vcoordinate), [Enabled_vDimension](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#enabled_vdimension), [Enabled_vNet](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#enabled_vnet), [Enabled_vPolygon](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#enabled_vpolygon), [EnableDraw](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#enabledraw), [EndModify](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#endmodify), [Export_ToParameters](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#export_toparameters), [FlipXY](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#flipxy), [GraphicallyInvalidate](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#graphicallyinvalidate), [Handle](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#handle), [Identifier](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#identifier), [InBoard](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#inboard), [InComponent](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#incomponent), [InCoordinate](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#incoordinate), [Index](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#index), [InDimension](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#indimension), [InNet](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#innet), [InPolygon](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#inpolygon), [InSelectionMemory](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#inselectionmemory), [IsAssyTestPoint_Bottom](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#isassytestpoint_bottom), [IsAssyTestPoint_Top](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#isassytestpoint_top), [IsElectricalPrim](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#iselectricalprim), [IsFreePrimitive](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#isfreeprimitive), [IsHidden](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#ishidden), [IsKeepout](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#iskeepout), [IsPreRoute](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#ispreroute), [IsSaveable](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#issaveable), [IsTenting](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#istenting), [IsTenting_Bottom](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#istenting_bottom), [IsTenting_Top](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#istenting_top), [IsTestPoint_Bottom](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#istestpoint_bottom), [IsTestPoint_Top](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#istestpoint_top), [Layer](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#layer), [MiscFlag1](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#miscflag1), [MiscFlag2](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#miscflag2), [MiscFlag3](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#miscflag3), [Moveable](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#moveable), [MoveByXY](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#movebyxy), [MoveToXY](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#movetoxy), [Net](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#net), [ObjectID](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#objectid), [ObjectIDString](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#objectidstring), [PadCacheRobotFlag](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#padcacherobotflag), [PasteMaskExpansion](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#pastemaskexpansion), [Polygon](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#polygon), [PolygonOutline](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#polygonoutline), [PowerPlaneClearance](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#powerplaneclearance), [PowerPlaneConnectStyle](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#powerplaneconnectstyle), [PowerPlaneReliefExpansion](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#powerplanereliefexpansion), [Preview](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#preview), [ReliefAirGap](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#reliefairgap), [ReliefConductorWidth](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#reliefconductorwidth), [ReliefEntries](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#reliefentries), [Replicate](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#replicate), [RequiredParamterSpace](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#requiredparamterspace), [RotateBy](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#rotateby), [Selected](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#selected), [SolderMaskExpansion](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#soldermaskexpansion), [SwapLayerPairs](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#swaplayerpairs), [TearDrop](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#teardrop), [UnionIndex](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#unionindex), [UniqueId](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#uniqueid), [UniqueID](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#uniqueid-1), [Used](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#used), [UserRouted](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#userrouted), [V7Layer](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#v7layer), [ViewableObjectID](https://altiumdeveloper.github.io/ad-sdk-docs/reference/pcb/IPCB_Primitive.md#viewableobjectid)