c# - 在 WPF 应用程序中旋转 HelixViewport3D 中的对象

Question

我正在尝试使用 helixtoolkit 在 WPF 应用程序中显示一个 3d 对象，并根据沿 x、y、z 轴的 3 个变量(用户输入)旋转它。但是我在 helix 工具包中找不到旋转 3d 对象的函数。

C#代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Media.Media3D;
using HelixToolkit.Wpf;

namespace HelixTrial
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();

            ModelImporter importer = new ModelImporter();
            Model3D model = importer.Load("D:\\Crate1.obj");
            Models.Content = model;

            // need to apply rotation to the model using three x,y,z variables
        }

    }
}

XAML 代码

<Window x:Class="HelixTrial.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:HelixToolkit="clr-namespace:HelixToolkit.Wpf;assembly=HelixToolkit.Wpf"
    Title="MainWindow" Height="500" Width="500">
    <Grid  Width="400" Height="400">
        <HelixToolkit:HelixViewport3D x:Name="Viewport" ZoomExtentsWhenLoaded="True">
            <HelixToolkit:SunLight/>
            <ModelVisual3D x:Name="Models"/>
        </HelixToolkit:HelixViewport3D>
    </Grid>
</Window>

Answer 1

您无法在工具包中找到它，因为它是标准的 WPF function .所以在你的例子中它看起来有点像这样:

<ModelVisual3D x:Name="Models">
    <ModelVisual3D.Transform>
        <Transform3DGroup>
            <RotateTransform3D>
                <RotateTransform3D.Rotation>
                     <AxisAngleRotation3D Axis="1,0,0" Angle="{Binding varX}"/>
                </RotateTransform3D.Rotation>
            </RotateTransform3D>
            <RotateTransform3D>
                <RotateTransform3D.Rotation>
                    <AxisAngleRotation3D Axis="0,1,0" Angle="{Binding varY}"/>
                </RotateTransform3D.Rotation>
            </RotateTransform3D>
            <RotateTransform3D>
                <RotateTransform3D.Rotation>
                     <AxisAngleRotation3D Axis="0,0,1" Angle="{Binding varZ}"/>
                </RotateTransform3D.Rotation>
            </RotateTransform3D>
        </Transform3DGroup>
    </ModelVisual3D.Transform>
</ModelVisual3D>