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MeshGeometry3D.Positions Property

.NET Framework 3.0

Gets or sets a collection of vertex positions for a MeshGeometry3D.

Namespace: System.Windows.Media.Media3D
Assembly: PresentationCore (in presentationcore.dll)
XML Namespace: http://schemas.microsoft.com/winfx/2006/xaml/presentation

Syntax

C++

public Point3DCollection Positions { get; set; }

/** @property */
public Point3DCollection get_Positions ()

/** @property */
public void set_Positions (Point3DCollection value)

JScript

public function get Positions () : Point3DCollection

public function set Positions (value : Point3DCollection)

XAML Property Element Usage

<object>
  <object.Positions>
    <Point3DCollection .../>
  </object.Positions>
</object>

XAML Attribute Usage

<object Positions="Point3DCollection" .../>

Property Value

Point3DCollection that contains the vertex positions of the MeshGeometry3D.

Remarks

The points specifed by this property represent the vertices of the triangles that make up a 3-D mesh.

The winding order (the order in which the Positions that make up each triangle of the mesh are specified) determines whether a given face is front-facing or back-facing. Front-facing triangles are wound in counter-clockwise order; back-facing triangles are wound in clockwise order.

Example

XAML

<GeometryModel3D>
  <GeometryModel3D.Geometry>
          <MeshGeometry3D 
              Positions="-1 -1 0  1 -1 0  -1 1 0  1 1 0"
              Normals="0 0 1  0 0 1  0 0 1  0 0 1"
              TextureCoordinates="0 1  1 1  0 0  1 0   "
              TriangleIndices="0 1 2  1 3 2" />
      </GeometryModel3D.Geometry>
      <GeometryModel3D.Material>
          <DiffuseMaterial>
              <DiffuseMaterial.Brush>
                  <SolidColorBrush Color="Cyan" Opacity="0.3"/>
              </DiffuseMaterial.Brush>
          </DiffuseMaterial>
      </GeometryModel3D.Material>
  <!-- Translate the plane. -->
      <GeometryModel3D.Transform>
          <TranslateTransform3D
            OffsetX="2" OffsetY="0" OffsetZ="-1"   >
          </TranslateTransform3D>
      </GeometryModel3D.Transform>
  </GeometryModel3D>

Platforms

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

Version Information

.NET Framework

Supported in: 3.0

Reference

MeshGeometry3D Class
MeshGeometry3D Members
System.Windows.Media.Media3D Namespace

Other Resources

3-D Graphics Overview
3-D Solids Sample

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