CreateArc

The CreateArc method creates an arc in the 3D Window.

 

JavaScript
CreateArc(        Position,        RadiusX,        RadiusY,        StartAngle ,        EndEngle ,        LineColor ,        FillColor ,        NumOfSegments ,        GroupID ,        Description)

 

C#
ITerrainArc61 CreateArc(         IPosition61   Position,       double        RadiusX,       double        RadiusY,       double        StartAngle = -90,       double        EndEngle = 90,       object        LineColor = -16711936,       object        FillColor = -10197916,       int           NumOfSegments = -1,       int           GroupID = 0,       string        Description = "")

 

C++
HRESULT CreateArc(         IPosition61 *       Position,         double       RadiusX,         double       RadiusY,         double       StartAngle,         double       EndEngle,         VARIANT      LineColor,         VARIANT      FillColor,         long  NumOfSegments,         LONG_PTR     GroupID,         BSTR  Description,         ITerrainArc61 **    pITerrainArc61)

 

Parameters

Position

An IPosition61 representing the position and orientation of the object on the terrain.

RadiusX

The radius of the arc along the x-axis in meters.

RadiusY

The radius of the arc along the y-axis in meters

StartAngle

The angle at which the arc begins.

EndAngle

The angle at which the arc ends.

LineColor

The color of the lines that make up the arc. The color value is used to specify color and transparency values. This parameter can be any of the following:

·         An IColor61 object.

·         A number which represents the color in ABGR format (0xAABBGGRR). The low-order byte contains a value for the relative intensity of red; the second byte contains a value for green; the third byte contains a value for blue. The high-order byte contains a value for alpha.

·         A string that represents HTML color format (“#RRGGBB”).

FillColor

The color which fills the arc, if the alpha value is greater than zero. The color value is used to specify color and transparency values. This parameter can be any of the following:

·         An IColor61 object.

·         A number which represents the color in ABGR format (0xAABBGGRR). The low-order byte contains a value for the relative intensity of red; the second byte contains a value for green; the third byte contains a value for blue. The high-order byte contains a value for alpha.

·         A string that represents HTML color format (“#RRGGBB”).

NumofSegments

The number of segments from which the arc is created. The greater the number of segments; the smoother the shape.

GroupID

The Project Tree group in which the arc was created. If it is set to zero, the object is created under the root. You can obtain the GroupID by one of the following methods:

§  Create the group using IProjectTree61.CreateGroup.

§  Find the group, if you know the name, using IProjectTree61.FindItem.

§  Traverse the Tree using IProjectTree61 methods such as GetNextItem (), until you come to the desired GroupID.

Description

The name of the arc as it appears in the Project Tree. If an empty string is passed into this parameter, TerraExplorer assigns it a unique name.

Return Value

pITerrainArc61

An ITerrainArc61 representing the newly created arc.

Exceptions

See: HRESULT Return Values for a list of possible values returned by the HRESULT.