Rotate Assembly Component on Axis Using IDragOperator::DragAsUI Example (VB.NET)

'----------------------------------------------------------------------------
' Preconditions:
' 1. Assembly document is open.
' 2. Component in the assembly document is selected.
'
' Postconditions: Transform matrix is set.
'----------------------------------------------------------------------------
Imports SolidWorks.Interop.sldworks
Imports SolidWorks.Interop.swconst
Imports System.Runtime.InteropServices
Imports System
Imports System.Diagnostics

Partial Class SolidWorksMacro

    Const PI As Double = 3.14159
    Const RadPerDeg As Double = PI / 180.0#

    '   DragOperator::TransformType
    '       Translation     0
    '       Transform is translation-only.
    '
    '       Axial rotation  1
    '       Transform is rotation-only.
    '
    '       General         2
    '       Transform can be translation, rotation, or both.
    '
    '   DragOperator::DragMode
    '       Minimum Move    0
    '       Move smallest number of geometries.
    '
    '       Maximum Move    1
    '       Move geometries rigidly if possible.
    '
    '       Relaxation      2
    '       Solve geometries using relaxation.

    Sub main()

        Dim swModel As ModelDoc2
        Dim swAssy As AssemblyDoc
        Dim swDragOp As DragOperator
        Dim swSelMgr As SelectionMgr
        Dim swComp(1) As Component2
        Dim vComp As Object
        Dim swXform As MathTransform
        Dim swMathUtil As MathUtility
        Dim swOriginPt As MathPoint
        Dim swX_Axis As MathVector
        Dim nPts(2) As Double
        Dim vData As Object
        Dim i As Integer
        Dim bRet As Boolean

        swModel = swApp.ActiveDoc
        swAssy = swModel
        swDragOp = swAssy.GetDragOperator
        swSelMgr = swModel.SelectionManager
        swComp(0) = swSelMgr.GetSelectedObjectsComponent(1)
        swComp(1) = swSelMgr.GetSelectedObjectsComponent(2)
        swMathUtil = swApp.GetMathUtility

        vComp = swComp

        nPts(0) = 0.0#
        nPts(1) = 0.0#
        nPts(2) = 0.0#

        vData = nPts

        swOriginPt = swMathUtil.CreatePoint(vData)

        nPts(0) = 1.0#
        nPts(1) = 0.0#
        nPts(2) = 0.0#
        vData = nPts

        swX_Axis = swMathUtil.CreateVector(vData)

        ' This is an incremental rotation,
        ' so angle is always the same.
        swXform = swMathUtil.CreateTransformRotateAxis(swOriginPt, swX_Axis, 1.0# * RadPerDeg)

        bRet = swDragOp.AddComponent(swComp(0), False)
        Debug.Assert(bRet)

        swDragOp.DynamicClearanceEnabled = False

        ' Axial rotation
        swDragOp.TransformType = 1

        ' Solve by relaxation
        swDragOp.DragMode = 2

        bRet = swDragOp.BeginDrag
        Debug.Assert(bRet)

        For i = 0 To 500
            bRet = swDragOp.DragAsUI(swXform)
        Next i

        bRet = swDragOp.EndDrag
        Debug.Assert(bRet)

    End Sub


    Public swApp As SldWorks


End Class