Tessellate a Body Example (VBA)
This example shows how to tessellate a body.
'-----------------------------------------------------------------
' Preconditions:
' 1. Verify that the part to open exists.
' 2. Open the Immediate window.
'
' Postconditions:
' 1. Tessellates the body.
' 2. Examine the graphics area and Immediate window.
'
' NOTE: Because the part is used elsewhere, do not save changes.
'-----------------------------------------------------------------
Option Explicit
Sub
Main()
Dim
errors As Long
Dim
warnings As Long
Dim
swApp As SldWorks.SldWorks
Dim
swModel As ModelDoc2
Dim
swPart As PartDoc
Dim
b As Integer
Dim
nBodyType As Integer
Dim
swFace As Face2
Dim
swTessellation As Tessellation
Dim
bResult As Boolean
Dim
iNumVertices As Integer
Dim
iNumFacets As Integer
Dim
aFacetIds As Variant
Dim
aFinIds As Variant
Dim
aVertexIds As Variant
Dim
aVertexCoords1 As Variant
Dim
aVertexCoords2 As Variant
Dim
iFacetIdIdx As Integer
Dim
iFinIdx As Integer
Dim
vBodies As Variant
Set
swApp = Application.SldWorks
'
Get the active document
Set
swModel = swApp.OpenDoc6("C:\Users\Public\Documents\SOLIDWORKS\SOLIDWORKS
2018\samples\tutorial\advdrawings\drive shaft
plate.sldprt", swDocumentTypes_e.swDocPART, 0, "", errors,
warnings)
'
Get the document title
Debug.Print
swModel.GetTitle()
'
Cast down to a part
Set
swPart = swModel
'
Get bodies
vBodies
= swPart.GetBodies2(swBodyType_e.swAllBodies,
False)
'
Loop through array
Dim
swBody As Body2
For
b = 0 To UBound(vBodies)
'
Get a body
Set
swBody = vBodies(b)
'
Now call a method on a body
nBodyType
= swBody.[GetType]()
If
nBodyType = swBodyType_e.swSolidBody Then
Set
swFace = Nothing
Set
swTessellation = Nothing
bResult
= False
'
Pass in null so the whole body will be tessellated
Set
swTessellation = swBody.GetTessellation(Empty)
'
Set up the Tessellation object
swTessellation.NeedFaceFacetMap = True
swTessellation.NeedVertexParams = True
swTessellation.NeedVertexNormal = True
'
Set option to improve quality of data returned
swTessellation.ImprovedQuality = True
Debug.Print
("Tessellation is configured for higher-quality data.")
'
How to handle matches across common edges
swTessellation.MatchType
= swTesselationMatchType_e.swTesselationMatchFacetTopology
'
Do the tessellation
bResult
= swTessellation.Tessellate()
'
Get the number of vertices and facets
iNumVertices
= swTessellation.GetVertexCount()
Debug.Print
("Vertex count: " & iNumVertices)
iNumFacets
= swTessellation.GetFacetCount()
Debug.Print
("Facet count: " & iNumFacets)
'
Speed things up
swModel.SetAddToDB (True)
swModel.SetDisplayWhenAdded (False)
'
Insert sketch
swModel.Insert3DSketch2 (False)
'
Now get the facet data per face
Set
swFace = swBody.GetFirstFace()
While
Not swFace Is Nothing
aFacetIds
= swTessellation.GetFaceFacets(swFace)
For
iFacetIdIdx = 0 To UBound(aFacetIds)
aFinIds
= swTessellation.GetFacetFins(aFacetIds(iFacetIdIdx))
'
There should always be three fins per facet
For
iFinIdx = 0 To 2
aVertexIds
= swTessellation.GetFinVertices(aFinIds(iFinIdx))
'
Should always be two vertices per fin
aVertexCoords1
= swTessellation.GetVertexPoint(aVertexIds(0))
aVertexCoords2
= swTessellation.GetVertexPoint(aVertexIds(1))
'
Create a line
swModel.CreateLine2 aVertexCoords1(0), aVertexCoords1(1),
aVertexCoords1(2), aVertexCoords2(0), aVertexCoords2(1), aVertexCoords2(2)
Next
Next
Set
swFace = swFace.GetNextFace()
Wend
'
Close sketch
swModel.Insert3DSketch2 (True)
'
Clear selection for next pass
swModel.ClearSelection2 (True)
'
Restore settings
swModel.SetAddToDB (False)
swModel.SetDisplayWhenAdded (True)
End
If
Next
Exit
Sub
End
Sub