Function GetControlPoints( _
   ByVal Row As Integer, _
   ByVal Column As Integer _
) As Object

Dim instance As IBSurfParamData
Dim Row As Integer
Dim Column As Integer
Dim value As Object
 
value = instance.GetControlPoints(Row, Column)

object GetControlPoints( 
   int Row,
   int Column
)

Object^ GetControlPoints( 
&   int Row,
&   int Column
) 

Parameters

Row

1 <= index of row <= ControlPointRowCount

Column

1 <= index of column <= ControlPointColumnCount

Return Value

Control points are stored in (ControlPointColumnCount*ControlPointRowCount) vectors of dimension ControlPointDimension. The U direction of surface is in the row direction. The V direction of surface is in the column direction.

• For non-rational surfaces ControlPointDimension = 3, and control point coordinates are stored as [x0,y0,z0,x1,y1,z1,.........].

• For rational surfaces ControlPointDimension = 4, and control point coordinates and weights are stored as [x0,y0,z0,w0,x1,y1,z1,w1,........].

• For example, 6 control points are stored in 6 vectors of dimension 3 in a 2X3 matrix as follows: