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EmissiveMaterial Class

Applies a Brush to a 3-D model so that it participates in lighting calculations as if the Material were emitting light equal to the color of the Brush.

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

public sealed class EmissiveMaterial : Material
public final class EmissiveMaterial extends Material
public final class EmissiveMaterial extends Material
<EmissiveMaterial .../>

The following example shows how to use EmissiveMaterial to add color to an existing Material equal to the color of the EmissiveMaterial's brush. The code below shows DiffuseMaterial and EmissiveMaterial applied in combination to create a add blue to the DiffuseMaterial's appearance.

<!-- The material applied to the 3D object is made up of a DiffuseMaterial (gradient brush) with 
     an EmissiveMaterial layered on top (blue SolidColorBrush). The EmissiveMaterial adds blue to the gradient. -->
<GeometryModel3D.Material>
  <MaterialGroup>
    <DiffuseMaterial>
      <DiffuseMaterial.Brush>
        <LinearGradientBrush StartPoint="0,0.5" EndPoint="1,0.5">
          <LinearGradientBrush.GradientStops>
            <GradientStop Color="Yellow" Offset="0" />
            <GradientStop Color="Red" Offset="0.25" />
            <GradientStop Color="Blue" Offset="0.75" />
            <GradientStop Color="LimeGreen" Offset="1" />
          </LinearGradientBrush.GradientStops>
        </LinearGradientBrush>
      </DiffuseMaterial.Brush>
    </DiffuseMaterial>
    <EmissiveMaterial>
      <EmissiveMaterial.Brush>
        <SolidColorBrush x:Name="mySolidColorBrush" Color="Blue" />
      </EmissiveMaterial.Brush>
    </EmissiveMaterial>
  </MaterialGroup>
</GeometryModel3D.Material>

In procedural code:

// The material property of GeometryModel3D specifies the material applied to the 3D object.  
// In this sample the material applied to the 3D object is made up of two materials layered  
// on top of each other - a DiffuseMaterial (gradient brush) with an EmissiveMaterial 
// layered on top (blue SolidColorBrush). The EmmisiveMaterial alters the appearance of  
// the gradient toward blue.

// Create a horizontal linear gradient with four stops.   
LinearGradientBrush myHorizontalGradient = new LinearGradientBrush();
myHorizontalGradient.StartPoint = new Point(0, 0.5);
myHorizontalGradient.EndPoint = new Point(1, 0.5);
myHorizontalGradient.GradientStops.Add(new GradientStop(Colors.Yellow, 0.0));
myHorizontalGradient.GradientStops.Add(new GradientStop(Colors.Red, 0.25));
myHorizontalGradient.GradientStops.Add(new GradientStop(Colors.Blue, 0.75));
myHorizontalGradient.GradientStops.Add(new GradientStop(Colors.LimeGreen, 1.0));

// Define material that will use the gradient.
DiffuseMaterial myDiffuseMaterial = new DiffuseMaterial(myHorizontalGradient);

// Add this gradient to a MaterialGroup.
MaterialGroup myMaterialGroup = new MaterialGroup();
myMaterialGroup.Children.Add(myDiffuseMaterial);

// Define an Emissive Material with a blue brush.
Color c = new Color();
c.ScA = 1;
c.ScB = 255;
c.ScR = 0;
c.ScG = 0;
EmissiveMaterial myEmissiveMaterial = new EmissiveMaterial(new SolidColorBrush(c));

// Add the Emmisive Material to the Material Group.
myMaterialGroup.Children.Add(myEmissiveMaterial);

// Add the composite material to the 3D model.
myGeometryModel.Material = myMaterialGroup;

The following code shows the entire sample in XAML.

<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" >
  <DockPanel>
    <Viewbox>
      <Canvas Width="321" Height="201">

        <!-- The Viewport3D provides a rendering surface for 3-D visual content. -->
        <Viewport3D ClipToBounds="True" Width="150" Height="150"
          Canvas.Left="0" Canvas.Top="10">

          <!-- Defines the camera used to view the 3D object. -->
          <Viewport3D.Camera>
            <PerspectiveCamera x:Name="myPerspectiveCamera" Position="0,0,2" LookDirection="0,0,-1" 
             FieldOfView="60" />
          </Viewport3D.Camera>

          <!-- The ModelVisual3D children contain the 3D models -->
          <Viewport3D.Children>

            <!-- This ModelVisual3D defines the lights cast in the scene. Without light, the
                 3D object cannot be seen. -->
            <ModelVisual3D>
              <ModelVisual3D.Content>
                <DirectionalLight Color="#FFFFFF" Direction="-0.612372,-0.5,-0.612372" />
              </ModelVisual3D.Content>
            </ModelVisual3D>
            <ModelVisual3D>
              <ModelVisual3D.Content>
                <GeometryModel3D>

                  <!-- The geometry specifes the shape of the 3D plane. In this case, a flat sheet is created. -->
                  <GeometryModel3D.Geometry>
                    <MeshGeometry3D
                     TriangleIndices="0,1,2 3,4,5 "
                     Normals="0,0,1 0,0,1 0,0,1 0,0,1 0,0,1 0,0,1 "
                     TextureCoordinates="0,0 1,0 1,1 1,1 0,1 0,0 "
                     Positions="-0.5,-0.5,0.5 0.5,-0.5,0.5 0.5,0.5,0.5 0.5,0.5,0.5 -0.5,0.5,0.5 -0.5,-0.5,0.5 " />
                  </GeometryModel3D.Geometry>
                  <!-- The material applied to the 3D object is made up of a DiffuseMaterial (gradient brush) with 
                       an EmissiveMaterial layered on top (blue SolidColorBrush). The EmissiveMaterial adds blue to the gradient. -->
                  <GeometryModel3D.Material>
                    <MaterialGroup>
                      <DiffuseMaterial>
                        <DiffuseMaterial.Brush>
                          <LinearGradientBrush StartPoint="0,0.5" EndPoint="1,0.5">
                            <LinearGradientBrush.GradientStops>
                              <GradientStop Color="Yellow" Offset="0" />
                              <GradientStop Color="Red" Offset="0.25" />
                              <GradientStop Color="Blue" Offset="0.75" />
                              <GradientStop Color="LimeGreen" Offset="1" />
                            </LinearGradientBrush.GradientStops>
                          </LinearGradientBrush>
                        </DiffuseMaterial.Brush>
                      </DiffuseMaterial>
                      <EmissiveMaterial>
                        <EmissiveMaterial.Brush>
                          <SolidColorBrush x:Name="mySolidColorBrush" Color="Blue" />
                        </EmissiveMaterial.Brush>
                      </EmissiveMaterial>
                    </MaterialGroup>
                  </GeometryModel3D.Material>
                  <!-- The Transform specifies how to transform the 3D object. This transform 
                       rotates the object.-->
                  <GeometryModel3D.Transform>
                    <RotateTransform3D>
                      <RotateTransform3D.Rotation>
                        <AxisAngleRotation3D x:Name="myAngleRotation" Axis="0,3,0" Angle="40" />
                      </RotateTransform3D.Rotation>
                    </RotateTransform3D>
                  </GeometryModel3D.Transform>
                </GeometryModel3D>
              </ModelVisual3D.Content>
            </ModelVisual3D>
          </Viewport3D.Children>
        </Viewport3D>
      </Canvas>
    </Viewbox>
  </DockPanel>
</Page>

Below is the entire sample in procedural code.

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Media.Media3D;

namespace SDKSample
{
    public partial class EmissiveMaterialExample : Page
    {
        public EmissiveMaterialExample()
        {

            // Declare scene objects.
            Viewport3D myViewport3D = new Viewport3D();
            Model3DGroup myModel3DGroup = new Model3DGroup();
            GeometryModel3D myGeometryModel = new GeometryModel3D();
            ModelVisual3D myModelVisual3D = new ModelVisual3D();

            // Defines the camera used to view the 3D object. In order to view the 3D object,
            // the camera must be positioned and pointed such that the object is within view 
            // of the camera.
            PerspectiveCamera myPCamera = new PerspectiveCamera();

            // Specify where in the 3D scene the camera is.
            myPCamera.Position = new Point3D(0, 0, 2);

            // Specify the direction that the camera is pointing.
            myPCamera.LookDirection = new Vector3D(0, 0, -1);

            // Define camera's horizontal field of view in degrees.
            myPCamera.FieldOfView = 60;

            // Asign the camera to the viewport
            myViewport3D.Camera = myPCamera;

            // Define the lights cast in the scene. Without light, the 3D object cannot 
            // be seen. Also, the direction of the lights affect shadowing. Note: to 
            // illuminate an object from additional directions, create additional lights.
            DirectionalLight myDirectionalLight = new DirectionalLight();
            myDirectionalLight.Color = Colors.White;
            myDirectionalLight.Direction = new Vector3D(-0.61, -0.5, -0.61);

            myModel3DGroup.Children.Add(myDirectionalLight);

            // The geometry specifes the shape of the 3D plane. In this sample, a flat sheet 
            // is created.
            MeshGeometry3D myMeshGeometry3D = new MeshGeometry3D();

            // Create a collection of normal vectors for the MeshGeometry3D.
            Vector3DCollection myNormalCollection = new Vector3DCollection();
            myNormalCollection.Add(new Vector3D(0,0,1));
            myNormalCollection.Add(new Vector3D(0,0,1));
            myNormalCollection.Add(new Vector3D(0,0,1));
            myNormalCollection.Add(new Vector3D(0,0,1));
            myNormalCollection.Add(new Vector3D(0,0,1));
            myNormalCollection.Add(new Vector3D(0,0,1));
            myMeshGeometry3D.Normals = myNormalCollection;

            // Create a collection of vertex positions for the MeshGeometry3D. 
            Point3DCollection myPositionCollection = new Point3DCollection();
            myPositionCollection.Add(new Point3D(-0.5, -0.5, 0.5));
            myPositionCollection.Add(new Point3D(0.5, -0.5, 0.5));
            myPositionCollection.Add(new Point3D(0.5, 0.5, 0.5));
            myPositionCollection.Add(new Point3D(0.5, 0.5, 0.5));
            myPositionCollection.Add(new Point3D(-0.5, 0.5, 0.5));
            myPositionCollection.Add(new Point3D(-0.5, -0.5, 0.5));
            myMeshGeometry3D.Positions = myPositionCollection;

            // Create a collection of texture coordinates for the MeshGeometry3D.
            PointCollection myTextureCoordinatesCollection = new PointCollection();
            myTextureCoordinatesCollection.Add(new Point(0, 0));
            myTextureCoordinatesCollection.Add(new Point(1, 0));
            myTextureCoordinatesCollection.Add(new Point(1, 1));
            myTextureCoordinatesCollection.Add(new Point(1, 1));
            myTextureCoordinatesCollection.Add(new Point(0, 1));
            myTextureCoordinatesCollection.Add(new Point(0, 0));
            myMeshGeometry3D.TextureCoordinates = myTextureCoordinatesCollection;

            // Create a collection of triangle indices for the MeshGeometry3D.
            Int32Collection myTriangleIndicesCollection = new Int32Collection();
            myTriangleIndicesCollection.Add(0);
            myTriangleIndicesCollection.Add(1);
            myTriangleIndicesCollection.Add(2);
            myTriangleIndicesCollection.Add(3);
            myTriangleIndicesCollection.Add(4);
            myTriangleIndicesCollection.Add(5);
            myMeshGeometry3D.TriangleIndices = myTriangleIndicesCollection;

            // Apply the mesh to the geometry model.
            myGeometryModel.Geometry = myMeshGeometry3D;
            // The material property of GeometryModel3D specifies the material applied to the 3D object.  
            // In this sample the material applied to the 3D object is made up of two materials layered  
            // on top of each other - a DiffuseMaterial (gradient brush) with an EmissiveMaterial 
            // layered on top (blue SolidColorBrush). The EmmisiveMaterial alters the appearance of  
            // the gradient toward blue.

            // Create a horizontal linear gradient with four stops.   
            LinearGradientBrush myHorizontalGradient = new LinearGradientBrush();
            myHorizontalGradient.StartPoint = new Point(0, 0.5);
            myHorizontalGradient.EndPoint = new Point(1, 0.5);
            myHorizontalGradient.GradientStops.Add(new GradientStop(Colors.Yellow, 0.0));
            myHorizontalGradient.GradientStops.Add(new GradientStop(Colors.Red, 0.25));
            myHorizontalGradient.GradientStops.Add(new GradientStop(Colors.Blue, 0.75));
            myHorizontalGradient.GradientStops.Add(new GradientStop(Colors.LimeGreen, 1.0));

            // Define material that will use the gradient.
            DiffuseMaterial myDiffuseMaterial = new DiffuseMaterial(myHorizontalGradient);

            // Add this gradient to a MaterialGroup.
            MaterialGroup myMaterialGroup = new MaterialGroup();
            myMaterialGroup.Children.Add(myDiffuseMaterial);

            // Define an Emissive Material with a blue brush.
            Color c = new Color();
            c.ScA = 1;
            c.ScB = 255;
            c.ScR = 0;
            c.ScG = 0;
            EmissiveMaterial myEmissiveMaterial = new EmissiveMaterial(new SolidColorBrush(c));

            // Add the Emmisive Material to the Material Group.
            myMaterialGroup.Children.Add(myEmissiveMaterial);

            // Add the composite material to the 3D model.
            myGeometryModel.Material = myMaterialGroup;
            // Apply a transform to the object. In this sample, a rotation transform is applied,  
            // rendering the 3D object rotated.
            RotateTransform3D myRotateTransform3D = new RotateTransform3D();
            AxisAngleRotation3D myAxisAngleRotation3d = new AxisAngleRotation3D();
            myAxisAngleRotation3d.Axis = new Vector3D(0,3,0);
            myAxisAngleRotation3d.Angle = 40;
            myRotateTransform3D.Rotation = myAxisAngleRotation3d;
            myGeometryModel.Transform = myRotateTransform3D;

            // Add the geometry model to the model group.
            myModel3DGroup.Children.Add(myGeometryModel);

            // Add the group of models to the ModelVisual3d.
            myModelVisual3D.Content = myModel3DGroup; 
            myViewport3D.Children.Add(myModelVisual3D);

            // Apply the viewport to the page so it will be rendered.
            this.Content = myViewport3D;
        }
    }
}

System.Object
   System.Windows.Threading.DispatcherObject
     System.Windows.DependencyObject
       System.Windows.Freezable
         System.Windows.Media.Animation.Animatable
           System.Windows.Media.Media3D.Material
            System.Windows.Media.Media3D.EmissiveMaterial

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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.

.NET Framework

Supported in: 3.0

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