Home/ Questions/Q 8432657
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-10T06:11:15+00:00

I have written a program, which import a 3d model in XAML format: <Viewport3D

  • 0

I have written a program,
which import a 3d model in XAML format:

<Viewport3D x:Name="ZAM3DViewport3D" ClipToBounds="true" Width="400" Height="300" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/interactivedesigner/2006" xmlns:c="http://schemas.openxmlformats.org/markup-compatibility/2006" c:Ignorable="d">
<Viewport3D.Resources>
    <ResourceDictionary>/**other Elements at the same Level**/
        <Transform3DGroup x:Key="root_boneOR13TR12" >
            <TranslateTransform3D OffsetX="-0" OffsetY="-0" OffsetZ="-0"/>
            <ScaleTransform3D ScaleX="1" ScaleY="1" ScaleZ="1"/>
            <RotateTransform3D>
                <RotateTransform3D.Rotation>
                    <AxisAngleRotation3D Angle="90.00000933" Axis="-1 0 0"/>
                </RotateTransform3D.Rotation>
            </RotateTransform3D>
            <TranslateTransform3D OffsetX="-0.00299196" OffsetY="0.00964678" OffsetZ="0.000916864"/>
        </Transform3DGroup>
    </ResourceDictionary>
</Viewport3D.Resources>

<Viewport3D.Camera>
    <PerspectiveCamera x:Name="FrontOR6" FarPlaneDistance="10" LookDirection="0,0,-1" UpDirection="0,1,0" NearPlaneDistance="0.1" Position="0,-0.0439422,0.729628" FieldOfView="39.5978" />
</Viewport3D.Camera>

<ModelVisual3D>
    <ModelVisual3D.Content>
        <Model3DGroup x:Name="Scene" Transform="{DynamicResource SceneTR7}"> <!-- Scene (XAML Path = ) -->
            <AmbientLight Color="#646464" />
            <DirectionalLight Color="#FFFFFF" Direction="-0.612372,-0.5,-0.612372" />
            <DirectionalLight Color="#FFFFFF" Direction="0.612372,-0.5,-0.612372" />
            <Model3DGroup x:Name="rootOR9" Transform="{DynamicResource rootOR9TR8}"> <!-- root (XAML Path = (Viewport3D.Children)[0].(ModelVisual3D.Content).(Model3DGroup.Children)[3]) -->
                <Model3DGroup x:Name="glasses_meOR11" Transform="{DynamicResource glasses_meOR11TR10}"> <!-- glasses_me (XAML Path = (Viewport3D.Children)[0].(ModelVisual3D.Content).(Model3DGroup.Children)[3].(Model3DGroup.Children)[0]) -->
                    <Model3DGroup x:Name="root_boneOR13" Transform="{DynamicResource root_boneOR13TR12}"> <!-- root_bone (XAML Path = (Viewport3D.Children)[0].(ModelVisual3D.Content).(Model3DGroup.Children)[3].(Model3DGroup.Children)[0].(Model3DGroup.Children)[0]) -->
                        <Model3DGroup x:Name="main_boneOR15" Transform="{DynamicResource main_boneOR15TR14}"> <!-- main_bone (XAML Path = (Viewport3D.Children)[0].(ModelVisual3D.Content).(Model3DGroup.Children)[3].(Model3DGroup.Children)[0].(Model3DGroup.Children)[0].(Model3DGroup.Children)[0]) -->
                        </Model3DGroup>
                        <Model3DGroup x:Name="right_boneOR19" Transform="{DynamicResource right_boneOR19TR18}"> <!-- right_bone (XAML Path = (Viewport3D.Children)[0].(ModelVisual3D.Content).(Model3DGroup.Children)[3].(Model3DGroup.Children)[0].(Model3DGroup.Children)[0].(Model3DGroup.Children)[1]) -->
                            <Model3DGroup x:Name="right_bon0OR21" Transform="{DynamicResource right_bon0OR21TR20}"> <!-- right_bon0 (XAML Path = (Viewport3D.Children)[0].(ModelVisual3D.Content).(Model3DGroup.Children)[3].(Model3DGroup.Children)[0].(Model3DGroup.Children)[0].(Model3DGroup.Children)[1].(Model3DGroup.Children)[0]) -->
                            </Model3DGroup>
                        </Model3DGroup>
                        <Model3DGroup x:Name="left_bone_OR25" Transform="{DynamicResource left_bone_OR25TR24}"> <!-- left_bone_ (XAML Path = (Viewport3D.Children)[0].(ModelVisual3D.Content).(Model3DGroup.Children)[3].(Model3DGroup.Children)[0].(Model3DGroup.Children)[0].(Model3DGroup.Children)[2]) -->
                            <Model3DGroup x:Name="left_boneOR27" Transform="{DynamicResource left_boneOR27TR26}"> <!-- left_bone (XAML Path = (Viewport3D.Children)[0].(ModelVisual3D.Content).(Model3DGroup.Children)[3].(Model3DGroup.Children)[0].(Model3DGroup.Children)[0].(Model3DGroup.Children)[2].(Model3DGroup.Children)[0]) -->
                            </Model3DGroup>
                        </Model3DGroup>
                    </Model3DGroup>
                    <GeometryModel3D x:Name="glasses_meOR11GR12" Geometry="{DynamicResource glasses_meOR11GR12}" Material="{DynamicResource ER___Default_MaterialMR1}" BackMaterial="{DynamicResource ER___Default_MaterialMR1}"/>
                </Model3DGroup>
                <Model3DGroup x:Name="glasses_m0OR32" Transform="{DynamicResource glasses_m0OR32TR31}"> <!-- glasses_m0 (XAML Path = (Viewport3D.Children)[0].(ModelVisual3D.Content).(Model3DGroup.Children)[3].(Model3DGroup.Children)[1]) -->
                    <Model3DGroup x:Name="root_bone1OR34" Transform="{DynamicResource root_bone1OR34TR33}"> <!-- root_bone1 (XAML Path = (Viewport3D.Children)[0].(ModelVisual3D.Content).(Model3DGroup.Children)[3].(Model3DGroup.Children)[1].(Model3DGroup.Children)[0]) -->
                        <Model3DGroup x:Name="main_bone1OR36" Transform="{DynamicResource main_bone1OR36TR35}"> <!-- main_bone1 (XAML Path = (Viewport3D.Children)[0].(ModelVisual3D.Content).(Model3DGroup.Children)[3].(Model3DGroup.Children)[1].(Model3DGroup.Children)[0].(Model3DGroup.Children)[0]) -->
                            <Model3DGroup x:Name="main_eff1OR38" Transform="{DynamicResource main_eff1OR38TR37}"> <!-- main_eff1 (XAML Path = (Viewport3D.Children)[0].(ModelVisual3D.Content).(Model3DGroup.Children)[3].(Model3DGroup.Children)[1].(Model3DGroup.Children)[0].(Model3DGroup.Children)[0].(Model3DGroup.Children)[0]) -->
                                <Model3DGroup x:Name="right_bon1OR40" Transform="{DynamicResource right_bon1OR40TR39}"> <!-- right_bon1 (XAML Path = (Viewport3D.Children)[0].(ModelVisual3D.Content).(Model3DGroup.Children)[3].(Model3DGroup.Children)[1].(Model3DGroup.Children)[0].(Model3DGroup.Children)[0].(Model3DGroup.Children)[0].(Model3DGroup.Children)[0]) -->
                                    <Model3DGroup x:Name="right_bon2OR42" Transform="{DynamicResource right_bon2OR42TR41}"> <!-- right_bon2 (XAML Path = (Viewport3D.Children)[0].(ModelVisual3D.Content).(Model3DGroup.Children)[3].(Model3DGroup.Children)[1].(Model3DGroup.Children)[0].(Model3DGroup.Children)[0].(Model3DGroup.Children)[0].(Model3DGroup.Children)[0].(Model3DGroup.Children)[0]) -->
                                    </Model3DGroup>
                                </Model3DGroup>
                                <Model3DGroup x:Name="left_bone0OR46" Transform="{DynamicResource left_bone0OR46TR45}"> <!-- left_bone0 (XAML Path = (Viewport3D.Children)[0].(ModelVisual3D.Content).(Model3DGroup.Children)[3].(Model3DGroup.Children)[1].(Model3DGroup.Children)[0].(Model3DGroup.Children)[0].(Model3DGroup.Children)[0].(Model3DGroup.Children)[1]) -->
                                    <Model3DGroup x:Name="left_bone1OR48" Transform="{DynamicResource left_bone1OR48TR47}"> <!-- left_bone1 (XAML Path = (Viewport3D.Children)[0].(ModelVisual3D.Content).(Model3DGroup.Children)[3].(Model3DGroup.Children)[1].(Model3DGroup.Children)[0].(Model3DGroup.Children)[0].(Model3DGroup.Children)[0].(Model3DGroup.Children)[1].(Model3DGroup.Children)[0]) -->
                                    </Model3DGroup>
                                </Model3DGroup>
                            </Model3DGroup>
                        </Model3DGroup>
                    </Model3DGroup>
                </Model3DGroup>
            </Model3DGroup>
        </Model3DGroup>
    </ModelVisual3D.Content>
</ModelVisual3D>

I want to access the Transform3DGroup x:Key=”root_boneOR13TR12″ Element via C#
and want to modify the AxisAngelRotation Property if its needed.

sincerely,
bbklol

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Let’s start with defining a storyboard: when you will run it, it will actually rotate your objects!

    And then, with some animations (also DoubleAnimation works well), you can set the Rotation property of your RotateTransform3D (see below).

    In your case, to answer your question, I think you should use a syntax very near this (I kept your XAML path, signed with [ ]….remove them!!):

    Storyboard.TargetProperty="[(Viewport3D.Children)[0].(ModelVisual3D.Content).(Model3DGroup.Children)[3].(Model3DGroup.Children)[0].(Model3DGroup.Children)[0])].(ModelVisual3D.Transform).(Transform3DGroup.Children)[2].(RotateTransform3D.Rotation).(AxisAngleRotation3D.Angle)"

    I show you just an example, maybe you can understand in a simpler way…

    This one is the Storyboard that will rotate the items in the ViewPort3D below:

    <Storyboard x:Key="RotationStoryboard">
    <!--This is an horizontal rotation-->
    <DoubleAnimation Storyboard.TargetProperty="(Viewport3D.Children)[0].(ModelVisual3D.Transform).(Transform3DGroup.Children)[0].(RotateTransform3D.Rotation).(AxisAngleRotation3D.Angle)"
        BeginTime="0:0:0.25"
        From="360"
        To="0"
        Duration="0:0:4.5"
        RepeatBehavior="Forever" />
    <!--This is an orbital horizontal rotation (I removed the other rotation on first transformation)-->
    <DoubleAnimation Storyboard.TargetProperty="(Viewport3D.Children)[1].(ModelVisual3D.Transform).(Transform3DGroup.Children)[3].(RotateTransform3D.Rotation).(AxisAngleRotation3D.Angle)"
        From="360"
        To="0"
        RepeatBehavior="Forever"
        Duration="0:0:3.5" />
</Storyboard>

    An this ix the XAML code of the objects… 

    <Viewport3D>
    <Viewport3D.Children>
        <!--First object-->
        <ModelVisual3D>
            <ModelVisual3D.Transform>
                <Transform3DGroup>
                    <RotateTransform3D>
                        <RotateTransform3D.Rotation>
                            <AxisAngleRotation3D Angle="360"
                                                 Axis="0,1,0" />
                            </RotateTransform3D.Rotation>
                    </RotateTransform3D>
                </Transform3DGroup>
            </ModelVisual3D.Transform>
            <model3d:Sphere3D />
        </ModelVisual3D>
        <!--Second object-->
        <ModelVisual3D>
            <ModelVisual3D.Transform>
                <Transform3DGroup>
                    <RotateTransform3D>
                        <RotateTransform3D.Rotation>
                            <AxisAngleRotation3D Angle="360" 
                                                 Axis="0,1,0" />
                        </RotateTransform3D.Rotation>
                    </RotateTransform3D>
                    <ScaleTransform3D ScaleZ="0"
                                      ScaleY="0"
                                      ScaleX="0"/>
                    <TranslateTransform3D OffsetX="3.5" />
                    <RotateTransform3D CenterX="0"
                                       CenterY="0"
                                       CenterZ="0">
                        <RotateTransform3D.Rotation>
                            <AxisAngleRotation3D Angle="360" 
                                                 Axis="0,1,0" />
                        </RotateTransform3D.Rotation>
                    </RotateTransform3D>
                </Transform3DGroup>
            </ModelVisual3D.Transform>
            <model3d:Sphere3D x:Name="SatelliteSphere">
                    <model3d:Sphere3D.Transform>
                        <RotateTransform3D CenterX="-1"
                                           CenterY="-1"
                                           CenterZ="-1" />
                    </model3d:Sphere3D.Transform>
            </model3d:Sphere3D>
        </ModelVisual3D>
    </Viewport3D.Children>
</Viewport3D>
    • 0