Constrain Sketch Example (VBA)
This example shows how to fully constrain a sketch.
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Before constraining the sketch |
After constraining the sketch |
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'----------------------------------------------------------------------------
' Preconditions: Open a document with a sketch similar to "Before constraining
' the
sketch".
'
' Postconditions: Sketch is fully constrained and looks
' similar
to "After constraining the sketch".
'----------------------------------------------------------------------------
Option Explicit
Dim swApp As SldWorks.SldWorks
Dim swModel As SldWorks.ModelDoc2
Dim swSketchMgr As SldWorks.SketchManager
Dim swSketch As SldWorks.Sketch
Dim swSelMgr As SldWorks.SelectionMgr
Dim swFeat As SldWorks.Feature
Dim nSketchStatus As Long
Dim boolstatus As Boolean
Sub main()
Set swApp = Application.SldWorks
Set swModel = swApp.ActiveDoc
' Is a model document active?
If swModel Is Nothing Then
swApp.SendMsgToUser2 "A part document
must be open and the active document.", swMbWarning, swMbOk
Exit
Sub
End If
' Is it a part document?
Dim modelType As Long
modelType = swModel.GetType
If modelType <> SwConst.swDocPART Then
swApp.SendMsgToUser2 "A part document
must be open and the active document.", swMbWarning, swMbOk
Exit
Sub
End If
Set swSketchMgr = swModel.SketchManager
Set swSketch = swSketchMgr.ActiveSketch
If
swSketch Is Nothing Then
swApp.SendMsgToUser2 "No active sketch;
thus, a sketch could not be selected.", swMbWarning, swMbOk
Exit
Sub
End
If
' Select the lines and make them colinear and vertical
boolstatus = swModel.Extension.SelectByID2("Line2",
"SKETCHSEGMENT", 0.02116924482339, 0.04904427527406, 0, False,
0, Nothing, 0)
boolstatus = swModel.Extension.SelectByID2("Line3",
"SKETCHSEGMENT", 0.06508556638246, 0.02563976857491, 0, True,
0, Nothing, 0)
swModel.SketchAddConstraints
"sgCOLINEAR"
swModel.SketchAddConstraints
"sgVERTICAL2D"
MsgBox
"The lines have been selected, made colinear, and vertically constrained."
swModel.ClearSelection2
True
'Select the center of the circles and constrain them to
the origin
boolstatus = swModel.Extension.SelectByID2("Point7",
"SKETCHPOINT", 0.1074240560292, 0.006179841656516, 0, False,
0, Nothing, 0)
boolstatus = swModel.Extension.SelectByID2("Point1@Origin",
"EXTSKETCHPOINT", 0, 0, 0, True, 0, Nothing, 0)
swModel.SketchAddConstraints
"sgCOINCIDENT"
MsgBox
"The center of the circles and the origin were selected and made
coincident"
swModel.ClearSelection2
True
' Select a line and the circle and make them tangent
boolstatus = swModel.Extension.SelectByID2("Line2",
"SKETCHSEGMENT", 0.005390925700365, 0.009861449451888, 0, False,
0, Nothing, 0)
boolstatus = swModel.Extension.SelectByID2("Arc1",
"SKETCHSEGMENT", -0.01222819732034, 0.04720347137637, 0, True,
0, Nothing, 0)
swModel.SketchAddConstraints
"sgTANGENT"
MsgBox
"One line and a cirle were selected; both lines are now tangent with
the circle."
swModel.ClearSelection2
True
'Select the circles and make them concentric
boolstatus = swModel.Extension.SelectByID2("Arc2",
"SKETCHSEGMENT", -0.0290584043849, 0.03116218026797, 0, False,
0, Nothing, 0)
boolstatus = swModel.Extension.SelectByID2("Arc1",
"SKETCHSEGMENT", -0.01222819732034, 0.04720347137637, 0, True,
0, Nothing, 0)
swModel.SketchAddConstraints
"sgCONCENTRIC"
MsgBox
"The circles have been selected and made concentric."
swModel.ClearSelection2
True
'Select all the sketch entities and fix their positions
MsgBox "All sketch
entities will be selected and made fixed to fully constrain the sketch."
boolstatus = swModel.Extension.SelectByID2("Line2",
"SKETCHSEGMENT", 0.02116924482339, 0.04904427527406, 0, False,
0, Nothing, 0)
boolstatus = swModel.Extension.SelectByID2("Line3",
"SKETCHSEGMENT", 0.06508556638246, 0.02563976857491, 0, True,
0, Nothing, 0)
boolstatus = swModel.Extension.SelectByID2("Arc2",
"SKETCHSEGMENT", -0.0290584043849, 0.03116218026797, 0, False,
0, Nothing, 0)
boolstatus = swModel.Extension.SelectByID2("Arc1",
"SKETCHSEGMENT", -0.01222819732034, 0.04720347137637, 0, True,
0, Nothing, 0)
swModel.SketchAddConstraints
"sgFIXED"
swModel.ClearSelection2
True
End Sub