M_Rhino_Geometry_Collections_MeshVertexNormalList_ComputeNormals - mcneel/rhinocommon-api-docs GitHub Wiki

MeshVertexNormalList.ComputeNormals Method

Computes the vertex normals based on the physical shape of the mesh.

Namespace: Rhino.Geometry.Collections
Assembly: RhinoCommon (in RhinoCommon.dll) Version: Rhino 6.0

Syntax

C#

public bool ComputeNormals()

VB

Public Function ComputeNormals As Boolean

Return Value

Type: Boolean
true on success, false on failure.

Examples

VB

Partial Class Examples
  Public Shared Function AddMesh(ByVal doc As Rhino.RhinoDoc) As Rhino.Commands.Result
    Dim mesh As New Rhino.Geometry.Mesh()
    mesh.Vertices.Add(0.0, 0.0, 1.0) '0
    mesh.Vertices.Add(1.0, 0.0, 1.0) '1
    mesh.Vertices.Add(2.0, 0.0, 1.0) '2
    mesh.Vertices.Add(3.0, 0.0, 0.0) '3
    mesh.Vertices.Add(0.0, 1.0, 1.0) '4
    mesh.Vertices.Add(1.0, 1.0, 2.0) '5
    mesh.Vertices.Add(2.0, 1.0, 1.0) '6
    mesh.Vertices.Add(3.0, 1.0, 0.0) '7
    mesh.Vertices.Add(0.0, 2.0, 1.0) '8
    mesh.Vertices.Add(1.0, 2.0, 1.0) '9
    mesh.Vertices.Add(2.0, 2.0, 1.0) '10
    mesh.Vertices.Add(3.0, 2.0, 1.0) '11
    mesh.Faces.AddFace(0, 1, 5, 4)
    mesh.Faces.AddFace(1, 2, 6, 5)
    mesh.Faces.AddFace(2, 3, 7, 6)
    mesh.Faces.AddFace(4, 5, 9, 8)
    mesh.Faces.AddFace(5, 6, 10, 9)
    mesh.Faces.AddFace(6, 7, 11, 10)
    mesh.Normals.ComputeNormals()
    mesh.Compact()
    If doc.Objects.AddMesh(mesh) <> Guid.Empty Then
      doc.Views.Redraw()
      Return Rhino.Commands.Result.Success
    End If
    Return Rhino.Commands.Result.Failure
  End Function
End Class

C#

using System;

partial class Examples
{
  public static Rhino.Commands.Result AddMesh(Rhino.RhinoDoc doc)
  {
    Rhino.Geometry.Mesh mesh = new Rhino.Geometry.Mesh();
    mesh.Vertices.Add(0.0, 0.0, 1.0); //0
    mesh.Vertices.Add(1.0, 0.0, 1.0); //1
    mesh.Vertices.Add(2.0, 0.0, 1.0); //2
    mesh.Vertices.Add(3.0, 0.0, 0.0); //3
    mesh.Vertices.Add(0.0, 1.0, 1.0); //4
    mesh.Vertices.Add(1.0, 1.0, 2.0); //5
    mesh.Vertices.Add(2.0, 1.0, 1.0); //6
    mesh.Vertices.Add(3.0, 1.0, 0.0); //7
    mesh.Vertices.Add(0.0, 2.0, 1.0); //8
    mesh.Vertices.Add(1.0, 2.0, 1.0); //9
    mesh.Vertices.Add(2.0, 2.0, 1.0); //10
    mesh.Vertices.Add(3.0, 2.0, 1.0); //11

    mesh.Faces.AddFace(0, 1, 5, 4);
    mesh.Faces.AddFace(1, 2, 6, 5);
    mesh.Faces.AddFace(2, 3, 7, 6);
    mesh.Faces.AddFace(4, 5, 9, 8);
    mesh.Faces.AddFace(5, 6, 10, 9);
    mesh.Faces.AddFace(6, 7, 11, 10);
    mesh.Normals.ComputeNormals();
    mesh.Compact();
    if (doc.Objects.AddMesh(mesh) != Guid.Empty)
    {
      doc.Views.Redraw();
      return Rhino.Commands.Result.Success;
    }
    return Rhino.Commands.Result.Failure;
  }
}

Python

import Rhino
import scriptcontext
import System.Guid

def AddMesh():
    mesh = Rhino.Geometry.Mesh()
    mesh.Vertices.Add(0.0, 0.0, 1.0) #0
    mesh.Vertices.Add(1.0, 0.0, 1.0) #1
    mesh.Vertices.Add(2.0, 0.0, 1.0) #2
    mesh.Vertices.Add(3.0, 0.0, 0.0) #3
    mesh.Vertices.Add(0.0, 1.0, 1.0) #4
    mesh.Vertices.Add(1.0, 1.0, 2.0) #5
    mesh.Vertices.Add(2.0, 1.0, 1.0) #6
    mesh.Vertices.Add(3.0, 1.0, 0.0) #7
    mesh.Vertices.Add(0.0, 2.0, 1.0) #8
    mesh.Vertices.Add(1.0, 2.0, 1.0) #9
    mesh.Vertices.Add(2.0, 2.0, 1.0) #10
    mesh.Vertices.Add(3.0, 2.0, 1.0) #11

    mesh.Faces.AddFace(0, 1, 5, 4)
    mesh.Faces.AddFace(1, 2, 6, 5)
    mesh.Faces.AddFace(2, 3, 7, 6)
    mesh.Faces.AddFace(4, 5, 9, 8)
    mesh.Faces.AddFace(5, 6, 10, 9)
    mesh.Faces.AddFace(6, 7, 11, 10)
    mesh.Normals.ComputeNormals()
    mesh.Compact()
    if scriptcontext.doc.Objects.AddMesh(mesh)!=System.Guid.Empty:
        scriptcontext.doc.Views.Redraw()
        return Rhino.Commands.Result.Success
    return Rhino.Commands.Result.Failure


if __name__=="__main__":
    AddMesh()

Version Information

Supported in: 6.0.16224.21491, 5D58w

See Also

Reference

MeshVertexNormalList Class
Rhino.Geometry.Collections Namespace

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