Commonly used WPF 3D classes (1)

Document directory

• Geometry3D
• MeshGeometry3D
• Model3D
• GeometryModel3D
• Visual3D
• ModelVisual3D
• Viewport3D
• Viewport2DVisual3D
• Viewport3DVisual

Geometry3D

Abstract class, used to define the geometric data of objects and can be used to calculate HitTest and BoundingBox

 

MeshGeometry3D

A subclass of Geometry3D that defines the coordinates of the mesh vertex, triangle vertex, normal, and Texture (Texture ).

Common attributes: Positions, TriangleIndices, Noramls, TextureCoordinates

 

Model-related class (model = geometric data + deformation (location, rotation, size) + material) Model3D

Abstract class, indicating a 3D model, subclass: Light, GeometryModel3D, Model3DGroup

 

GeometryModel3D

The subclass of Model3D not only contains the ry of the object's geometric data, but also contains the material Matrial of the object, deformation Transform

<GeometryModel3DGeometry= "{StaticResource myTeapot}">

<GeometryModel3D.Material>
<DiffuseMaterial>
<DiffuseMaterial. Brush>
<SolidColorBrush Color = "Blue" Opacity = "1.0"/> </DiffuseMaterial. Brush>
</DiffuseMaterial>
</GeometryModel3D. Material>

<GeometryModel3D.Transform>
<RotateTransform3D>
<RotateTransform3D. Rotation>
<AxisAngleRotation3D x: Name = "myAngleRotation" Axis = "0, 3, 0" Angle = "1"/>
</RotateTransform3D. Rotation>
</RotateTransform3D>
</GeometryModel3D. Transform>

</GeometryModel3D>

----------------------------------------------------------------------

<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>      <GeometryModel3D.Transform>          <TranslateTransform3D            OffsetX="2" OffsetY="0" OffsetZ="-1"   >          </TranslateTransform3D>      </GeometryModel3D.Transform>  </GeometryModel3D>

Multiple GeometryModel3D instances can share a Geometry3D instance. You only need to set Material that is not available, and Transform can present different objects.

 

 

Visual-related class (including a Model3D object) Visual3D

Visual has the following responsibilities:

• Output display
• Transformations
• Hittesting
• Clipping
• Bounding box calculations

The following functions are not available:

• Event handling
• Layout
• Styles
• Data binding
• Globalization

Abstract class. Viewport3D. Children is a set of Visual3D objects.

The Visual3D class has a property: Visual3DModel. The property type is Model3D.

Class Visual3D

{

Model3D Visual3DModel {get; set ;}

}

 

ModelVisual3D

Added attributes such as Content and Children to the subclass of Visual3D.

 

Confusing names: Visual3D, ModelVisual3D, Model3D, and Visual3DModel (attribute name)

 

Viewport3D

Responsible for rendering 3D objects, HitTest, which is roughly composed of Camera + A set of ModelVisual3D objects (Lights + multiple GeometryModel3D objects)

Viewport2DVisual3D

It is used to place a 2D object, such as a Button or TextBlock, on a 3D object.

<Viewport2DVisual3D Geometry="{StaticResource plane}">
        <Viewport2DVisual3D.Material>          <DiffuseMaterial  Viewport2DVisual3D.IsVisualHostMaterial="true" />        </Viewport2DVisual3D.Material>                <Button>3.5!</Button>            </Viewport2DVisual3D>

Viewport3DVisual

Draw a group of 3D objects on a 2D Object

 

UIElement3D (event supported)

UIElement3D

ModelUIElement3D: similar to ModelVisual3D, but supports events

ContainerUIElement3D: a set of ModelUIElement3D, but does not represent itself