CAA:创建Octree三角形网格

该用例向您展示如何在现有分析文档上创建Octree三角形网格零件。此方案需要“ FEM Surface（FMS）产品”。

宏打开一个Analysis文档。将创建网格零件表面网格，并设置与此网格零件关联的整体规格。创建本地规范：MSHLocalMeshSize，将孔的边缘指定为支撑。最后，更新网格零件以生成网格。

BasicSurfMesh.gif

' COPYRIGHT DASSAULT SYSTEMES 2000

' ***********************************************************************
'   Purpose:      Open an analysis document
'                 Create a basic surface mesh  
'                 assign the surface as support
'                 specify the global specifications and assing values
'   Assumtions:   Looks for Surface.CATAnalysis in the directory
'   Author:       bmw
'   Languages:    VBScript
'   Locales:      English 
'   CATIA Level:  V5R16
' ***********************************************************************

Sub CATMain()
' ----------------------------------------------------------- 
' Optional: allows to find the sample wherever it's installed

  sDocPath=CATIA.SystemService.Environ("CATDocView")

    If (Not CATIA.FileSystem.FolderExists(sDocPath)) Then
      Err.Raise 9999,,"No Doc Path Defined"
    End If
' ----------------------------------------------------------- 

' Open the Analysis document 
sFilePath = CATIA.FileSystem.ConcatenatePaths(sDocPath, "online\CAAScdAniUseCases\samples\Surface.CATAnalysis")
Set oAnalysisDocument = CATIA.Documents.Open(sFilePath)

' Retrieve the Analysis Manager and Analysis Model
Set oAnalysisManagar = oAnalysisDocument.Analysis

' Retreive the product from Analysis manager
Set oAnalysisLinkedDocument = oAnalysisManagar.LinkedDocuments
Set partDocument = oAnalysisLinkedDocument.Item(1)
Set product = partDocument.Product

' Retrieve the analysis model from the list of models
Set oAnalysisModels = oAnalysisManagar.AnalysisModels
Set oAnalysisModel = oAnalysisModels.Item(1)

' Retrieve mesh manager and mesh part 
Set meshManagar = oAnalysisModel.MeshManager
Set meshPart = meshManagar.AnalysisMeshParts

' Retrieve publications from product and retrieve the published face.
Set publications = product.Publications
Set pubSurf = publications.Item("Round Hole.1")
Set pubCurve = publications.Item("Spine")
Set pubPoint = publications.Item("Point")


' Add the new basic surface mesh part to the list of mesh parts
Set surfPart = meshPart.Add ("MSHPartBasicSurf") 

' Add the support from the published surface
surfPart.AddSupportFromPublication product, pubSurf


' Set the global Specifications
surfPart.SetGlobalSpecification "GlobalMethod", 1
surfPart.SetGlobalSpecification "QuadsOnly", 2
surfPart.SetGlobalSpecification "ElementOrder", "Parabolic"
surfPart.SetGlobalSpecification "DedicatedMesh", 1
surfPart.SetGlobalSpecification "GlobalSize", "10.0 mm"
surfPart.SetGlobalSpecification "Offset", "15.0 mm"
surfPart.SetGlobalSpecification "TopologySize", "20.0 mm"
surfPart.SetGlobalSpecification "TopologySag", 2
surfPart.SetGlobalSpecification "SharpEdges", 1
surfPart.SetGlobalSpecification "FaceAngle", "0 deg"
surfPart.SetGlobalSpecification "OffsetFromThickness", 1
surfPart.SetGlobalSpecification "MeshRelSag", 1
surfPart.SetGlobalSpecification "MeshRelSagValue", "0.1 mm"
surfPart.SetGlobalSpecification "CurveCapture", 1
surfPart.SetGlobalSpecification "CurveCaptureTol", "1.1 mm"
surfPart.SetGlobalSpecification "MeshCapture", 1
surfPart.SetGlobalSpecification "MeshCaptureTol", "1.1 mm"
surfPart.SetGlobalSpecification "MeshAbsSag", 1
surfPart.SetGlobalSpecification "MeshAbsSaglValue", "1.1 mm"

'Add the local specifications
Set meshSpecs = surfPart.AnalysisMeshLocalSpecifications
Set spec = meshSpecs.Add("MSHTopProjectCurve")
spec.AddSupportFromPublication "ConnectorList", product, pubCurve
spec.SetAttribute "Tolerance", "500 mm"


Set spec = meshSpecs.Add("MSHTopProjectPoint")
spec.AddSupportFromPublication "ConnectorList", product, pubPoint
spec.SetAttribute "Tolerance", "500 mm"
spec.SetAttribute "Project", 0


'Upadte the mesh part
surfPart.Update

End Sub