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ITransformation.TransformPointsFF Method (ArcObjects .NET 10.5 SDK)
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ArcObjects Library Reference (Geometry)  

ITransformation.TransformPointsFF Method

Transforms floating point points to floating point points (or do the inverse).

[Visual Basic .NET]
Public Sub TransformPointsFF ( _
    ByVal Direction As esriTransformDirection, _
    ByVal cPoints As Integer, _
    ByRef inPoints As Double, _
    ByRef outPoints As Double _
)

[C#]
public void TransformPointsFF (
    esriTransformDirection Direction,
    int cPoints,
    ref double inPoints,
    ref double outPoints
);

[C++]
HRESULT TransformPointsFF(
  esriTransformDirection Direction,
  long cPoints,
  double* inPoints,
  double* outPoints
);

[C++]

Parameters
Direction 

  Direction is a parameter of type esriTransformDirection
cPoints 
  cPoints is a parameter of type long
inPoints 
  inPoints is a parameter of type double
outPoints 
  outPoints is a parameter of type double

Product Availability

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

Remarks

The cPoints parameter is the number of points you wish to transform. inPoints and outPoints are one-dimensional arrays so you must interleave coordinate pairs into the arrays.

[C#]

The cPoints parameter is the number of points you wish to transform. inPoints and outPoints are one-dimensional arrays so you must interleave coordinate pairs into the arrays.  This code is a shift of the points to the east and north.

 

            IAffineTransformation2D transform=new AffineTransformation2D() as IAffineTransformation2D;
            //Sets the type of transformation moving the values 10 degrees East and 20 degrees North
            transform.Move(10, 20);
            //Create two single dimensioned arrays for the inPoints and OutPoints
            double[] inPoints=new double[4];
            double[] outPoints=new double[4];

            //Interleave the Longitude and Latitude value for two points 1.1E 5.2N, 2.3E 6.4N
            inPoints[0]=1.1; //Longitude point 1
            inPoints[1]=5.2; //Latitude point 1
            inPoints[2]=2.3; //Longitude point 2
            inPoints[3]=6.4; //Latitude point 2

            transform.TransformPointsFF(0,2,ref inPoints[0],ref outPoints[0]);
            Debug.Print(outPoints[0].ToString()); //11.1
            Debug.Print(outPoints[1].ToString()); //25.2
            Debug.Print(outPoints[2].ToString()); //12.3
            Debug.Print(outPoints[3].ToString()); //26.4

See Also

ITransformation Interface