利用HelixToolkit将两个3D模型叠放到一起

[wowArthas]

在vs2017中建了个c#的wpf项目，我想将两个.obj模型能放到同一个界面中，两个模型都能单独控制转动，并且能够叠放到一起，这个后台怎么实现，我现在只能在一个界面里分成两部分控制，不知道怎么放到一起

[lindexi_gd]

只要你的坐标叠加就可以，但是需要注意元素所在是在两个不同的空间

[lindexi_gd]

在 Model3DGroup 可以通过 model3DGroup.Children.Add(model); 的方法添加其他的 Model3DGroup 类

[desperaso]

只是举例啊。例如一个3D模型，放到Grid里面，搞2个Grid，每个里面new 一个Preview_Model，Grid位置设一块就重叠。
参考http://bbs.cskin.net/thread-16048-1-1.html

public class Preview_Model
    {
        public AxisAngleRotation3D axisAngleRotation3D;
        public PerspectiveCamera perspectiveCamera;
        public Point3DCollection[] positions = new Point3DCollection[6];
        public PointCollection[] texturepoints = new PointCollection[6];
        public Image[] image = new Image[6];
        public System.Drawing.Bitmap[] face_image = new System.Drawing.Bitmap[] { Resource.f4, Resource.f3, Resource.f0, Resource.f2, Resource.f5, Resource.f1 };
        public Viewport3D viewport3D;
        public MeshGeometry3D[] meshGeometry3D = new MeshGeometry3D[6];
        public GeometryModel3D[] geometryModel3D = new GeometryModel3D[6];
        public ModelVisual3D modelVisual3D;
        public Model3DGroup model3DGroup;
        public DoubleAnimation animation;
        public Storyboard RotCube;

        public void init_draw(Grid obj, double x, double y, double z,double size)
        {
            Set_Scaling(x, y, z);

            texturepoints = new PointCollection[6]
            {
                new PointCollection {new Point(1,0), new Point(0,0), new Point(0,1), new Point(0,1), new Point(1,1),new Point(1,0) },
                new PointCollection { new Point(0,0),new Point(0,1),new Point(1,1),  new Point(1,1),new Point(1,0),new Point(0,0) },

                new PointCollection { new Point(0,1), new Point(1,1),new Point(1,0), new Point(1,0),new Point(0,0),new Point(0,1) },
                new PointCollection { new Point(1,1), new Point(1,0),new Point(0,0), new Point(0,0), new Point(0,1), new Point(1,1) },

                new PointCollection { new Point(0,1), new Point(1,1), new Point(1,0),new Point(1,0), new Point(0,0), new Point(0,1)},
                new PointCollection{ new Point(1,1), new Point(1,0),new Point(0,0),new Point(0,0), new Point(0,1),new Point(1,1)}
            };
            
            viewport3D = new Viewport3D();

            perspectiveCamera = new PerspectiveCamera()
            {
                Position = new Point3D(0, 0, 3),
                LookDirection = new Vector3D(0, 0, -3),
                FieldOfView = size,
                UpDirection = new Vector3D(0, 1, 0),
                FarPlaneDistance = 20,
                NearPlaneDistance = 0,
            };
            viewport3D.Camera = perspectiveCamera;

            modelVisual3D = new ModelVisual3D();
            model3DGroup = new Model3DGroup();

            for (int i = 0; i < 6; i++)
            {
                geometryModel3D[i] = new GeometryModel3D();

                DiffuseMaterial diffuse = new DiffuseMaterial();
                VisualBrush visualBrush = new VisualBrush();
                image[i] = new Image();
                image[i].Source = Function.BitmapToImageSource(face_image[i]);
                visualBrush.Visual = image[i];
                diffuse.Brush = visualBrush;
                geometryModel3D[i].Material = diffuse;

                meshGeometry3D[i] = new MeshGeometry3D()
                {
                    Positions = positions[i],
                    TextureCoordinates = texturepoints[i],
                };
                geometryModel3D[i].Geometry = meshGeometry3D[i];
                model3DGroup.Children.Add(geometryModel3D[i]);
            }

            AmbientLight ambientLight = new AmbientLight();
            model3DGroup.Children.Add(ambientLight);

            modelVisual3D.Content = model3DGroup;
            viewport3D.Children.Add(modelVisual3D);

            obj.Children.Add(viewport3D);

            axisAngleRotation3D = new AxisAngleRotation3D(new Vector3D(0, 1, 0), 0);
            RotateTransform3D rotate = new RotateTransform3D(axisAngleRotation3D);
            modelVisual3D.Transform = rotate;
            animation = new DoubleAnimation();
            animation.From = 0;
            animation.To = 360;
            animation.Duration = new Duration(TimeSpan.FromSeconds(10.0));
            animation.RepeatBehavior = RepeatBehavior.Forever;
            NameScope.SetNameScope(obj, new NameScope());
            obj.RegisterName("cubeaxis", axisAngleRotation3D);
            Storyboard.SetTargetName(animation, "cubeaxis");
            Storyboard.SetTargetProperty(animation, new PropertyPath(AxisAngleRotation3D.AngleProperty));
            RotCube = new Storyboard();
            RotCube.Children.Add(animation);
            RotCube.Begin(obj, true);
        }

        public void Set_Scaling(double x, double y, double z)
        {
            positions[0] = new Point3DCollection(new Point3D[] {
                    new Point3D(x, y, -z), new Point3D(-x, y, -z), new Point3D(-x, y, z),
                    new Point3D(-x, y, z),new Point3D(x, y, z), new Point3D(x, y, -z)
                });

            positions[1] = new Point3DCollection(new Point3D[] {
                    new Point3D(-x,y,-z),new Point3D(-x,-y,-z), new Point3D(-x,-y,z),
                    new Point3D(-x,-y,z),new Point3D(-x,y,z),new Point3D(-x,y,-z)
                });

            positions[2] = new Point3DCollection(new Point3D[] {
                    new Point3D(-x,-y,z),new Point3D(x,-y,z),new Point3D(x,y,z),
                    new Point3D(x,y,z),new Point3D(-x,y,z), new Point3D(-x,-y,z)
                });

            positions[3] = new Point3DCollection(new Point3D[] {
                    new Point3D(-x,-y,-z),new Point3D(-x,y,-z),new Point3D(x,y,-z),
                    new Point3D(x,y,-z), new Point3D(x,-y,-z),new Point3D(-x,-y,-z)
                });

            positions[4] = new Point3DCollection(new Point3D[] {
                    new Point3D(-x,-y,-z), new Point3D(x,-y,-z), new Point3D(x,-y,z),
                    new Point3D(x,-y,z),new Point3D(-x,-y,z), new Point3D(-x,-y,-z)
                });

            positions[5] = new Point3DCollection(new Point3D[] {
                    new Point3D(x,-y,-z),new Point3D(x,y,-z),new Point3D(x,y,z),
                    new Point3D(x,y,z), new Point3D(x,-y,z), new Point3D(x,-y,-z)
                });

        }
    }

[wowArthas]

引用 1 楼 lindexi_gd 的回复:

只要你的坐标叠加就可以，但是需要注意元素所在是在两个不同的空间

我现在是分割成了两个界面，所以光position一样好像不行？我是不是要把两个放一个view里？