我想根据与Kinect v2的联合位置移动按钮

Question

My intention is to track a joint with the Kinect v2, and then move a button in a Canvas based on that joint position. My problem is the buttons: they don't move and stay still

Here is my code:

if (joint.JointType == JointType.SpineMid) {
    ColorSpacePoint space =
    this.kinectRegion.KinectSensor.CoordinateMapper.MapCameraPointToColorSpace(joint.Position);
    Point center = new Point(space.X, space.Y);
    Point[] verticies = Polygon.CalculateVertices(buttons.Count, radius,
                                                  startingAngle, center);

    int i = 0;
    foreach (var button in buttons)
    {
        choices.Add(verticies[i], button);
        i++;
    }

    foreach (var obj in choices)
    {
        Canvas.SetLeft(obj.Value, obj.Key.X);
        Canvas.SetTop(obj.Value, obj.Key.Y);
    }

    choices.Clear();

}

The buttons are declared in the MainWindow.xaml file as:

<Button x:Name="button1" Panel.ZIndex="1" Height="200" Width="200" Margin="0,436,1712,444" Background="Aqua" Visibility="Hidden" RenderTransformOrigin="-1.02,0.565" />
<Button x:Name="button2" Panel.ZIndex="1" Height="200" Width="200" Margin="927,10,785,870" Background="Aqua" Visibility="Hidden" RenderTransformOrigin="-1.02,0.565" />
<Button x:Name="button3" Panel.ZIndex="1" Height="200" Width="200" Margin="927,849,785,31" Background="Aqua" Visibility="Hidden" RenderTransformOrigin="-1.02,0.565" />
<Button x:Name="button4" Panel.ZIndex="1" Height="200" Width="200" Margin="1702,436,10,444" Background="Aqua" Visibility="Hidden" RenderTransformOrigin="-1.02,0.565" />

<Button x:Name="backButton" Visibility="Visible" Grid.Column="0" Style="{StaticResource BackButtonStyle}" Click="GoBack" />

verticies contains the point from the buttons. choices is: Dictionary<Point, Button> choices = new Dictionary<Point,Button>();

Answer 1

Why do you want to place the Buttons into Canvas again? You can simply change their Canvas.Left a Canvas.Top properties and they will be moved.