[Hexlix WPF-v2.23] TranslateManipulator can not set position, and update wrong Transform in code behind

I’m trying to use the C# code behind to create a TranslateManipulator with cutting plane and rectangleVisual3D. But I see that, I can not set position for TranslateManipulator if I use it together with translateManipulator.Bind(ModelVisual3D). TranslateManipulator seems it init then updates the wrong value.

case error 1: translateManipulator.Transform wrong update value (see cutting plane cut the box), translateManipulator not move

“aaaa”

case error 2: translateManipulator can not set and update position, it allway is (0,0,0)

https://user-images.githubusercontent.com/48544354/233834131-866ce676-fc08-4867-832c-7a06c4f00a29.mp4

Here is my code reproduction error ( see case error 1 and case error 2)

using HelixToolkit.Wpf;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Media3D;
using System.Windows.Shapes;

namespace LearnHelixTookit.Wpf.Views
{
    /// <summary>
    /// Err update position TranslateManipulator position (see case 1 anfd case 2)
    /// </summary>
    public partial class FixManipulatorPosition : Window
    {
        Plane3D plane = new Plane3D(new Point3D(), new Vector3D(0, 0, 1));
        CuttingPlaneGroup cuttingGroup;
        RectangleVisual3D rectangle3D;
        TranslateManipulator translateManipulator;
        public FixManipulatorPosition()
        {
            InitializeComponent();
            translateManipulator = new TranslateManipulator()
            {
                Direction = new Vector3D(0, 0, 1),
                Length = 2,
                Color = Colors.Green,
                /*Position= new Point3D(0, 0, 2) not update */
            };
            translateManipulator.MouseMove += TranslateManipulator_MouseMove;
            rectangle3D = new RectangleVisual3D()
            {
                Width = 2,
                Length = 4,
                Normal = new Vector3D(0, 0, 1),
                Material = new DiffuseMaterial(Brushes.Red),
                Origin = new Point3D(0, 5, 1),
            };

            //Case err1 -  translateManipulator.Transform wrong update value (see cutting plane cut the box), translateManipulator not move
            translateManipulator.Bind(rectangle3D);
            translateManipulator.Position = new Point3D(0, 5, 2);

            ////Case err2 translateManipulator can not set and update position, it allway is (0,0,0)
            //translateManipulator.Position = new Point3D(0, 5, 2);
            //translateManipulator.Bind(rectangle3D);


            CubeVisual3D cube = new CubeVisual3D() { Center = new Point3D(0, 5, 1) };
            cuttingGroup = new CuttingPlaneGroup();
            cuttingGroup.CuttingPlanes = new List<Plane3D> { plane };

            cuttingGroup.Children.Add(cube);
            viewport.Children.Add(translateManipulator);
            viewport.Children.Add(rectangle3D);
            viewport.Children.Add(cuttingGroup);

            BillboardTextVisual3D billboard = new BillboardTextVisual3D() { Text = "C# behavior (see case err 1 and case err 2 in code behide )", Position = new Point3D(0, 5, 3) };
            viewport.Children.Add(billboard);
        }

        private void TranslateManipulator_MouseMove(object sender, MouseEventArgs e)
        {
            plane.Position = translateManipulator.Transform.Transform(rectangle3D.Origin);
            cuttingGroup.UpdateModel();
        }

        private void manipulator_MouseMove(object sender, MouseEventArgs e)
        {
            xamlCutting.UpdateModel();
        }
    }
}

<Window x:Class="LearnHelixTookit.Wpf.Views.FixManipulatorPosition"
        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/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:LearnHelixTookit.Wpf.Views"
           xmlns:ht="http://helix-toolkit.org/wpf"
        mc:Ignorable="d"
        Title="FixManipulator" Height="450" Width="800">
    <Grid>
        <ht:HelixViewport3D x:Name="viewport">
            <ht:SunLight></ht:SunLight>
            <ht:GridLinesVisual3D ></ht:GridLinesVisual3D>
            <ht:TranslateManipulator x:Name="manipulator" Color="Red" MouseMove="manipulator_MouseMove"
                                          Length="4" 
                                     Position="{Binding ElementName=pl, Path=Position}"
                                         Direction="0,0,1"
                                     ></ht:TranslateManipulator>
            <ht:RectangleVisual3D Width="2" Length="3" Origin="{Binding ElementName=manipulator, Path=Position}"></ht:RectangleVisual3D>
            <ht:CuttingPlaneGroup x:Name="xamlCutting">
                <ht:CuttingPlaneGroup.CuttingPlanes>
                    <ht:Plane3D x:Name="pl" Position="5,0,0" Normal="0,0,1"></ht:Plane3D>
                </ht:CuttingPlaneGroup.CuttingPlanes>
                <ht:CubeVisual3D x:Name="cube" Center="5,0,0"></ht:CubeVisual3D>
            </ht:CuttingPlaneGroup>

            <ht:BillboardTextVisual3D Text="xaml behavior"  Position="5,0,4"></ht:BillboardTextVisual3D>


        </ht:HelixViewport3D>
    </Grid>
</Window>

[holance]

Breaking change should be fine if it is necessary to fix bugs.

[MauNguyenVan]

what are the purposes of BindableTranslateManipulator/BindableRotateManipulator vs TranslateManipulator/ RotateManipulator? I think they are the same functions. and should be reduce 2 of them in 1.