Практическое руководство. Преобразование масштаба трехмерной модели
В этом примере показано, как масштабировать трехмерного объекта. Чтобы увеличить трехмерного объекта, используйте ScaleTransform3D. ScaleX, ScaleY, И ScaleZ свойства изменения размеров элемента с определенным коэффициентом. Например ScaleX значение 1,5 объект увеличивается на 150 процентов от его исходной ширины. Объект ScaleY значение 0,5 сжимает высоту объекта на 50 процентов. В приведенном ниже коде показано использование ScaleTransform3D как преобразование для GeometryModel3D.
<!-- Apply a scale transform to the object. You can transform the scale of the object
for the X, Y, or Z axis. The ScaleX, ScaleY, and ScaleZ properties resize the object
by the factor you specify. For example, a ScaleX value of 1.5 stretches the object to
150 percent of its original width. A ScaleY value of 0.5 shrinks the height of an object
by 50 percent. -->
<GeometryModel3D.Transform>
<!-- This Scale Transform stretches the object horizontally by 200 percent and shrinks it
vertically by 50 percent. -->
<ScaleTransform3D ScaleX="2" ScaleY="0.5" ScaleZ="1" CenterX="0" CenterY="0" CenterZ="0" />
</GeometryModel3D.Transform>
Пример
В следующем коде показано весь пример.
<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 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 light cast in the scene. Without light, the 3D
object cannot be seen. Also, the direction of the lights affect shadowing. If desired,
you can create multiple lights with different colors that shine from different directions. -->
<ModelVisual3D>
<ModelVisual3D.Content>
<DirectionalLight Color="#FFFFFF" Direction="-0.612372,-0.5,-0.612372" />
</ModelVisual3D.Content>
</ModelVisual3D>
<ModelVisual3D>
<ModelVisual3D.Content>
<GeometryModel3D>
<!-- The geometry specifies the shape of the 3D plane. In this sample, 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 specifies the material applied to the 3D object. In this sample a linear gradient
covers the surface of the 3D object.-->
<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>
</MaterialGroup>
</GeometryModel3D.Material>
<!-- Apply a scale transform to the object. You can transform the scale of the object
for the X, Y, or Z axis. The ScaleX, ScaleY, and ScaleZ properties resize the object
by the factor you specify. For example, a ScaleX value of 1.5 stretches the object to
150 percent of its original width. A ScaleY value of 0.5 shrinks the height of an object
by 50 percent. -->
<GeometryModel3D.Transform>
<!-- This Scale Transform stretches the object horizontally by 200 percent and shrinks it
vertically by 50 percent. -->
<ScaleTransform3D ScaleX="2" ScaleY="0.5" ScaleZ="1" CenterX="0" CenterY="0" CenterZ="0" />
</GeometryModel3D.Transform>
</GeometryModel3D>
</ModelVisual3D.Content>
</ModelVisual3D>
</Viewport3D.Children>
</Viewport3D>
</Canvas>
</Viewbox>
</DockPanel>
</Page>