MeshGeometry3D.Normals Property
Gets or sets a collection of normal vectors for the MeshGeometry3D. This is a dependency property.
Assembly: PresentationCore (in PresentationCore.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
<object> <object.Normals> <Vector3DCollection .../> </object.Normals> </object>
<object Normals="Vector3DCollection" .../>
Property Value
Type: System.Windows.Media.Media3D.Vector3DCollectionVector3DCollection that contains the normal vectors for the MeshGeometry3D.
Normal vectors are vectors perpendicular to the face of each triangle that defines a mesh. Normals determine whether a given triangle face is lit.
MeshGeometry3D allows the developer to specify position, normal, and texture coordinate information.
Normals are assumed to be associated with the front faces of a mesh primitive. 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.
If normals are not specified, their generation depends on whether the developer has specified triangle indices for the mesh. If triangle indices are specified, normals will be generated that take into account adjacent faces. If triangle indices are not specified, only one normal will be generated for the specified triangle. This might cause a faceted appearance in the mesh.
<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>
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
