ArcPad Scripting Object Model Reference > ArcPad Scripting Samples > Geometric Objects Example |
GeometricExample gets the ShapeType and geometric shape for the selected feature, displays the ShapeType in a message box, and calls Parts or PntInfo to display information about the feature's parts or vertices, respectively.
Parts takes a geometric shape and ShapeType as arguments. For each part of the geometric shape, it displays the number of vertices in a message box and calls PntInfo to display information about each vertex.
PntInfo takes a point or vertex, shape type, and vertex index as arguments. It displays coordinate information for the point or vertex in a message box.
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Sub GeometricExample Dim objSelLayer, objRS, objSH, lngSHType ' Get the layer of the selected feature Set objSelLayer = Application.Map.SelectionLayer 'If no feature has been selected, exit the subroutine If objSelLayer Is Nothing Then MsgBox "No feature has been selected",vbExclamation,"Selection Null" Exit Sub End If 'Get the selected feature's geometric shape. Set objRS = objSelLayer.Records objRS.Bookmark = Application.Map.SelectionBookmark Set objSH = objRS.Fields.Shape 'Get the selected feature's ShapeType. lngSHType = objSH.ShapeType 'Get the geometry of the feature. Must be handled differently depending on the ShapeType. Select Case lngSHType 'Point Feature Case 1 MsgBox "This is a point feature",vbOKOnly,"Point feature" 'Call routine to get the point's x,y coordinates Call PntInfo(objSH, lngSHType, "Point") 'PolyLine Feature Case 3 MsgBox "This is a polyline feature that contains " & objSH.Parts.Count & " part(s).",vbOKOnly,"Polyline Feature" 'Call routine to get the line's parts Call Parts(objSH, lngSHType) 'Polygon Feature Case 5 MsgBox "This is a Polygon feature that contains " & objSH.Parts.Count & " part(s).",vbOKOnly,"Polygon Feature" 'Call routine to get the polygon's parts Call Parts(objSH, lngSHType) 'PointZ Feature Case 11 MsgBox "This is a PointZ Feature",vbOKOnly,"PointZ Feature" 'Call routine to get the point's x,y,z coordinates Call PntInfo(objSH, lngSHType, "Point") 'PolyLineZ Feature Case 13 MsgBox "This is a PolylineZ feature that contains " & objSH.Parts.Count & " part(s).",vbOKOnly,"PolylineZ Feature" 'Call routine to get the polyline's parts Call Parts(objSH, lngSHType) 'PolygonZ Feature Case 15 MsgBox "This is a PolygonZ feature that contains " & objSH.Parts.Count & " part(s).",vbOKOnly,"PolygonZ Feature" 'Call routine to get the polygon's parts Call Parts(objSH, lngSHType) 'PointM Feature Case 21 MsgBox "This is a PointM Feature",vbOKOnly,"PointM Feature" 'Call routine to get the point's x,y,z coordinates and m value Call PntInfo(objSH, lngSHType, "Point") 'PolylineM Feature Case 23 MsgBox "This is a PolylineM feature that contains " & objSH.Parts.Count & " part(s).",vbOKOnly,"PolylineM Feature" 'Call routine to get the polyline's parts Call Parts(objSH, lngSHType) 'PolygonM Feature Case 25 MsgBox "This is a PolygonM feature that contains " & objSH.Parts.Count & " part(s).",vbOKOnly,"PolygonM Feature" 'Call routine to get the polygon's parts Call Parts(objSH, lngSHType) 'Unknown Feature Case Else MsgBox "Unknown Feature Type",vbExclamation,"Feature Type Unknown" End Select Set objSH = Nothing Set objRS = Nothing Set objSelLayer = Nothing End Sub Sub Parts(objSH, lngSHType) Dim intJ, intI, objPart, objVertex 'Initialize intJ intJ = 1 'Display information for each part of the feature For Each objPart in objSH.Parts MsgBox "Part " & intJ & " contains " & objPart.Count & " vertices.",vbOKOnly," Vertex Count" 'Initialize intI intI = 1 'Display information for each vertex in the current part For Each objVertex in objPart strVertexNo = "vertex(" & intI & ")" Call PntInfo(objVertex, lngSHType, strVertexNo) 'Increment intI intI = intI + 1 Next 'Increment intJ intJ = intJ + 1 Next End Sub Sub PntInfo(objSH, lngSHType, strVertexNo) Dim strMeasureInfo, strZinfo 'If the vertex or point contains a valid Measure value, get it. If objSH.IsMeasured = True Then strMeasureInfo = "and contains an M value of: " & objSH.Measure & "." End If 'If the selected feature is a PointZ, PolylineZ, or PolygonZ, get the Z value. If lngSHType = 11 or lngSHType = 13 or lngSHType = 15 Then strZinfo = ", " & objSH.Z End If 'Display the coordinate information of the vertex or point MsgBox "The coordinate information for the current point or vertex is: " &_ VBCr & objSH.X & ", " & objSH.Y & strZinfo &_ VBCr & strMeasureInfo,vbOKOnly,strVertexNo & " Coordinate Information." End Sub |