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TessellatedShapeBuilder Class

A class that permits structured building of geometry or a mesh from a collection of connected faces. Contains all closed face sets and custom precisions.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 17.0.0.0 (17.0.1090.0)
Since: 2015

Syntax

C# 
public class TessellatedShapeBuilder : ShapeBuilder
Visual Basic 
Public Class TessellatedShapeBuilder _
	Inherits ShapeBuilder
Visual C++ 
public ref class TessellatedShapeBuilder : public ShapeBuilder

Remarks

Creates a geometry populated with a shell or a connected solid (a solid may have inner voids) from the sets of connected faces. All faces are planar and have polyline boundaries, defined as sequences of 3d coordinates. Faces are added to the builder as a part of face sets, representing faces which share edges (e.g., outer 'surface' of a solid or inner 'surface' of solid voids). Order of faces in sets is irrelevant. Faces can only be added to the build while a face set is "open" (use OpenConnectedFaceSet(Boolean) to open a face set). Before attempting to build Revit geometry from the builder the current face set should be closed ( CloseConnectedFaceSet ). The builder allows for the possibility of multiple face sets - in such cases the first set should represent the outer 'surface' of a body and all following sets represent interior voids. The builder tries to create a geometry valid in Revit despite inconsistencies or omissions in the input data.

Examples

Copy C# 
// Create a pyramid-shaped DirectShape using given material for the faces
public void CreateTessellatedShape(Document doc, ElementId materialId)
{
    List<XYZ> loopVertices = new List<XYZ>(4);

    TessellatedShapeBuilder builder = new TessellatedShapeBuilder();

    builder.OpenConnectedFaceSet(true);
    // create a pyramid with a square base 4' x 4' and 5' high
    double length = 4.0;
    double height = 5.0;

    XYZ basePt1 = XYZ.Zero;
    XYZ basePt2 = new XYZ(length, 0, 0);
    XYZ basePt3 = new XYZ(length, length, 0);
    XYZ basePt4 = new XYZ(0, length, 0);
    XYZ apex = new XYZ(length / 2, length / 2, height);

    loopVertices.Add(basePt1);
    loopVertices.Add(basePt2);
    loopVertices.Add(basePt3);
    loopVertices.Add(basePt4);
    builder.AddFace(new TessellatedFace(loopVertices, materialId));

    loopVertices.Clear();
    loopVertices.Add(basePt1);
    loopVertices.Add(apex);
    loopVertices.Add(basePt2);
    builder.AddFace(new TessellatedFace(loopVertices, materialId));

    loopVertices.Clear();
    loopVertices.Add(basePt2);
    loopVertices.Add(apex);
    loopVertices.Add(basePt3);
    builder.AddFace(new TessellatedFace(loopVertices, materialId));

    loopVertices.Clear();
    loopVertices.Add(basePt3);
    loopVertices.Add(apex);
    loopVertices.Add(basePt4);
    builder.AddFace(new TessellatedFace(loopVertices, materialId));

    loopVertices.Clear();
    loopVertices.Add(basePt4);
    loopVertices.Add(apex);
    loopVertices.Add(basePt1);
    builder.AddFace(new TessellatedFace(loopVertices, materialId));

    builder.CloseConnectedFaceSet();
    builder.Target = TessellatedShapeBuilderTarget.Solid;
    builder.Fallback = TessellatedShapeBuilderFallback.Abort;
    builder.Build();

    TessellatedShapeBuilderResult result = builder.GetBuildResult();

    using (Transaction t = new Transaction(doc, "Create tessellated direct shape"))
    {
        t.Start();

        DirectShape ds = DirectShape.CreateElement(doc, new ElementId(BuiltInCategory.OST_GenericModel));
       ds.ApplicationId = "Application id";
       ds.ApplicationDataId = "Geometry object id";

        ds.SetShape(result.GetGeometricalObjects());
        t.Commit();
    }
}
Copy VB.NET 
' Create a pyramid-shaped DirectShape using given material for the faces
Public Sub CreateTessellatedShape(doc As Document, materialId As ElementId)
    Dim loopVertices As New List(Of XYZ)(4)

    Dim builder As New TessellatedShapeBuilder()

    builder.OpenConnectedFaceSet(True)
    ' create a pyramid with a square base 4' x 4' and 5' high
    Dim length As Double = 4.0
    Dim height As Double = 5.0

    Dim basePt1 As XYZ = XYZ.Zero
    Dim basePt2 As New XYZ(length, 0, 0)
    Dim basePt3 As New XYZ(length, length, 0)
    Dim basePt4 As New XYZ(0, length, 0)
    Dim apex As New XYZ(length / 2, length / 2, height)

    loopVertices.Add(basePt1)
    loopVertices.Add(basePt2)
    loopVertices.Add(basePt3)
    loopVertices.Add(basePt4)
    builder.AddFace(New TessellatedFace(loopVertices, materialId))

    loopVertices.Clear()
    loopVertices.Add(basePt1)
    loopVertices.Add(apex)
    loopVertices.Add(basePt2)
    builder.AddFace(New TessellatedFace(loopVertices, materialId))

    loopVertices.Clear()
    loopVertices.Add(basePt2)
    loopVertices.Add(apex)
    loopVertices.Add(basePt3)
    builder.AddFace(New TessellatedFace(loopVertices, materialId))

    loopVertices.Clear()
    loopVertices.Add(basePt3)
    loopVertices.Add(apex)
    loopVertices.Add(basePt4)
    builder.AddFace(New TessellatedFace(loopVertices, materialId))

    loopVertices.Clear()
    loopVertices.Add(basePt4)
    loopVertices.Add(apex)
    loopVertices.Add(basePt1)
    builder.AddFace(New TessellatedFace(loopVertices, materialId))

    builder.CloseConnectedFaceSet()
    builder.Target = TessellatedShapeBuilderTarget.Solid
    builder.Fallback = TessellatedShapeBuilderFallback.Abort
    builder.Build()

    Dim result As TessellatedShapeBuilderResult = builder.GetBuildResult()

    Using t As New Transaction(doc, "Create tessellated direct shape")
        t.Start()

        Dim ds As DirectShape = DirectShape.CreateElement(doc, New ElementId(BuiltInCategory.OST_GenericModel))
        ds.ApplicationId = "Application id"
        ds.ApplicationDataId = "Geometry object id"

        ds.SetShape(result.GetGeometricalObjects())
        t.Commit()
    End Using
End Sub

Inheritance Hierarchy

System Object
Autodesk.Revit.DB ShapeBuilder
Autodesk.Revit.DB TessellatedShapeBuilder

See Also