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Create Polygon Face Mesh Example (VB.NET)

This example shows how to create a polygon face mesh.

'-------------------------------------------------------------
' Preconditions:
' 1. Create a VB.NET Windows console project.
' 2. Copy and paste this project into the VB.NET IDE.
' 3. Add a reference to:
'    install_dir\APISDK\tlb\DraftSight.Interop.dsAutomation.dll.
' 4. Add references to System and System.Windows.Forms.
' 5. Open the Immediate window.
' 6. Start DraftSight and open a document.
' 7. Click Start Debugging.
'
' Postconditions:
' 1. A polygon face mesh is created and zoomed to fit.
' 2. All polygon face mesh parameters are printed to the Immediate
'    window.
'------------------------------------------------------------



Imports System.Collections.Generic
Imports System.Text
Imports DraftSight.Interop.dsAutomation
Imports System.Runtime.InteropServices
Imports System.Windows.Forms
Imports System.Diagnostics

Module Module1

    
Sub Main()

        
'Connect to DraftSight application
        Dim dsApp = GetObject(, "DraftSight.Application")
        dsApp.AbortRunningCommand() '
abort any command currently running in DraftSight to avoid nested commands

        
'Get active document
        Dim dsDoc As Document = dsApp.GetActiveDocument()
        
If dsDoc Is Nothing Then
            MessageBox.Show("There are no open documents in DraftSight")
            
Return
        End If

        'Get model space
        Dim dsModel As Model = dsDoc.GetModel()

        
'Get Sketch Manager
        Dim dsSketchMgr As SketchManager = dsModel.GetSketchManager()

        
'Polygon face mesh parameters
        Dim verticesCount As Integer = 8
        
Dim coordinatesArray As Double() = New Double() {2, 2, 0, 2, 6, 0, _
         6, 6, 0, 6, 2, 0, _
         2, 2, 2, 2, 6, 2, _
         6, 6, 2, 6, 2, 2}
        
Dim faceVerticesCountArray As Integer() = New Integer() {4, 4, 4, 4, 4, 4}
        
Dim faceVerticesArray As Integer() = New Integer() {1, 2, 3, 4, 5, 6, _
         7, 8, 1, 5, 8, 4, _
         2, 6, 7, 3, 3, 7, _
         8, 4, 1, 2, 6, 5}

        
'Add polygon face mesh
        Dim dsPolyFaceMesh As PolyFaceMesh = dsSketchMgr.InsertPolyFaceMesh(verticesCount, coordinatesArray, faceVerticesCountArray, faceVerticesArray)
        
If dsPolyFaceMesh IsNot Nothing Then
            'Zoom to fit
            dsApp.Zoom(dsZoomRange_e.dsZoomRange_Fit, Nothing, Nothing)

            
'Print polygon face mesh parameters
            PrintParameters(dsPolyFaceMesh)
        
Else
            MessageBox.Show("Polygon face mesh entity was not added to the current drawing.")
        
End If
    End Sub

    Sub PrintParameters(ByVal dsPolyFaceMesh As PolyFaceMesh)
        Debug.Print(Environment.NewLine &
"Polygon face mesh parameters...")

        
'Print common entity parameters
        Debug.Print("Handle = " & Convert.ToString(dsPolyFaceMesh.Handle))
        Debug.Print(
"Color = " & dsPolyFaceMesh.Color.GetNamedColor())
        Debug.Print(
"Erased = " & Convert.ToString(dsPolyFaceMesh.Erased))
        Debug.Print(
"Layer = " & Convert.ToString(dsPolyFaceMesh.Layer))
        Debug.Print(
"LineScale = " & Convert.ToString(dsPolyFaceMesh.LineScale))
        Debug.Print(
"LineStyle = " & Convert.ToString(dsPolyFaceMesh.LineStyle))
        Debug.Print(
"LineWeight = " & Convert.ToString(dsPolyFaceMesh.LineWeight))
        Debug.Print(
"Visible = " & Convert.ToString(dsPolyFaceMesh.Visible))

        
Dim x1 As Double, y1 As Double, z1 As Double
        Dim x2 As Double, y2 As Double, z2 As Double
        dsPolyFaceMesh.GetBoundingBox(x1, y1, z1, x2, y2, z2)
        Debug.Print(
String.Format("BoundingBox: ({0},{1},{2}) and ({3},{4},{5})", x1, y1, z1, x2, y2, _
         z2))

        
'Print polygon face mesh faces
        Debug.Print("Count of faces = " & dsPolyFaceMesh.GetFacesCount())
        
For faceIndex As Integer = 0 To dsPolyFaceMesh.GetFacesCount() - 1
            
Dim corner1Vertex As Integer, corner2Vertex As Integer, corner3Vertex As Integer, corner4Vertex As Integer
            dsPolyFaceMesh.GetFace(faceIndex, corner1Vertex, corner2Vertex, corner3Vertex, corner4Vertex)

            Debug.Print(
String.Format("Face({0}): ({1},{2},{3},{4})", faceIndex, corner1Vertex, corner2Vertex, corner3Vertex, corner4Vertex))
        
Next

        'Print polygon face mesh vertices
        Debug.Print("Count of vertices = " & dsPolyFaceMesh.GetVerticesCount())
        
For vertexIndex As Integer = 0 To dsPolyFaceMesh.GetVerticesCount() - 1
            
Dim x As Double, y As Double, z As Double
            dsPolyFaceMesh.GetVertexCoordinate(vertexIndex, x, y, z)

            Debug.Print(
String.Format("Vertex({0}): ({1},{2},{3})", vertexIndex, x, y, z))
        
Next
    End Sub
End
Module



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