ArcObjects Library Reference (Geometry)

ITransform3D.RotateVector3D Method

Rotates the object about axis defined by the specified vector through an angle measured in radians.

[Visual Basic .NET]
Public Sub RotateVector3D ( _
    ByVal axis As IVector3D, _
    ByVal rotationAngle As Double _
)

[C#]
public void RotateVector3D (
    IVector3D axis,
    double rotationAngle
);

[C++]
HRESULT RotateVector3D(
  IVector3D* axis,
  double rotationAngle
);

[C++]

Parameters
axis 

  axis is a parameter of type IVector3D
rotationAngle 
  rotationAngle is a parameter of type double

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

The angle of rotation must be in radians. To convert to radians from decimal degrees, multiply by PI/180.

[C#]

public static void TransformMultiPatchGeometry()

{

const double DegreesOfRotation=45;

//Transform3D: Cylinder Rotated Around An Axis Via RotateVector3D()

//Construct A Vector3D Corresponding To The Desired Axis Of Rotation

IVector3D axisOfRotationVector3D=ConstructVector3D(0, 10, 0);

//Obtain Angle Of Rotation In Radians

double angleOfRotationInRadians=GetRadians(DegreesOfRotation);

IGeometry geometry=GetMultiPatchGeometry();

ITransform3D transform3D=geometry as ITransform3D;

transform3D.RotateVector3D(axisOfRotationVector3D, angleOfRotationInRadians);

}

private static IVector3D ConstructVector3D(double xComponent, double yComponent, double zComponent)

{

IVector3D vector3D = new Vector3DClass();

vector3D.SetComponents(xComponent, yComponent, zComponent);

return vector3D;

}

private static double GetRadians(double decimalDegrees)

{

return decimalDegrees * (Math.PI / 180);

}