WPF動态加載3D 放大-旋轉-平移

WavefrontObjLoader.cs

第二步：ModelVisual3DWithName.cs

public class ModelVisual3DWithName:ModelVisual3D

    {

public string Name { get; set; }

public object Tag { get; set; }

    }

第三步：MainWindow.xmal

<Grid x:Name="lay">

 <Viewport3D x:Name="vp"

Margin="0">

  <Viewport3D.Camera>

   <PerspectiveCamera

FieldOfView="45" FarPlaneDistance="100"

LookDirection="0,0,-3.4142135623731" NearPlaneDistance="0.1"

Position="0,0,3.4142135623731"

UpDirection="0,3,0"/>

  </Viewport3D.Camera>

</Viewport3D>

<Slider Height="23" HorizontalAlignment="Left"

Margin="220,288,0,0" Name="slider1" VerticalAlignment="Top"

Width="100" Maximum="2000" />

Margin="49,288,0,0" Name="slider2" VerticalAlignment="Top"

Width="100" Maximum="1000" />

Margin="367,288,0,0" Name="slider3" VerticalAlignment="Top"

Width="100" Minimum="200" Maximum="2000" />

Margin="567,288,0,0" Name="slider4" VerticalAlignment="Top"

</Grid>

第四步：MainWindow.xmal

PerspectiveCamera myPCamera;

DirectionalLight myDirectionalLight;

Model3DGroup myModel3DGroup;

WavefrontObjLoader wfl;

ModelVisual3DWithName mv3dw;

public MainWindow()

{

InitializeComponent();

wfl = new

WavefrontObjLoader();           

slider1.ValueChanged += new

RoutedPropertyChangedEventHandler<double>(slider1_ValueChanged);

slider2.ValueChanged += new

RoutedPropertyChangedEventHandler<double>(slider2_ValueChanged);

slider3.ValueChanged += new

RoutedPropertyChangedEventHandler<double>(slider3_ValueChanged);

slider4.ValueChanged += new

RoutedPropertyChangedEventHandler<double>(slider4_ValueChanged);            

createCamera();

createLight();

createModel3D();

create360();

//createAnimation();

}

#region //光源

private void createLight()

myDirectionalLight = new DirectionalLight();

myDirectionalLight.Color = Colors.White;

myDirectionalLight.Direction = new Vector3D(-0.61, -0.5,

-0.61);

#endregion

#region //錄影機

private void createCamera()

myPCamera = new PerspectiveCamera();

//myPCamera.Position = new Point3D(0,-1743,-4000);//看的方向

myPCamera.Position = new Point3D(0, 0, 1000);

myPCamera.LookDirection = new Vector3D(0,0,-1000);//攝影機看的方向

myPCamera.UpDirection = new Vector3D(0, 1, -0);

myPCamera.FieldOfView = 45;//法向量

攝影機上下颠倒,左轉右轉           

myPCamera.NearPlaneDistance = 0.1;

myPCamera.FarPlaneDistance = 11050;

vp.Camera = myPCamera;

#region //模型

private void createModel3D()

myModel3DGroup = new Model3DGroup();

myModel3DGroup.Children.Add(myDirectionalLight);

var m =

wfl.LoadObjFile(@"C:/Users/Adminstrator/Desktop/3D動态加載/WpfApplication2/xx.obj");

m.Content = myModel3DGroup;

vp.Children.Add(m);

#region //360旋轉動作

RotateTransform3D rtf3D;

AxisAngleRotation3D aar;

private void create360()

rtf3D = new

RotateTransform3D();           

aar = new AxisAngleRotation3D();

this.RegisterName("myAngleRotation", aar);

aar.Angle = 0;

aar.Axis = new Vector3D(0, 3, 0);

rtf3D.Rotation = aar;

myModel3DGroup.Transform = rtf3D;

myPCamera.Transform = rtf3D;

Storyboard sbd;

DoubleAnimation dan;

private void createAnimation()

sbd = new Storyboard();

dan = new DoubleAnimation(0,360,new

Duration(TimeSpan.FromSeconds(10)));

dan.RepeatBehavior = RepeatBehavior.Forever;

Storyboard.SetTargetName(dan,"myAngleRotation");

Storyboard.SetTargetProperty(dan, new

PropertyPath(AxisAngleRotation3D.AngleProperty));

sbd.Children.Add(dan);

sbd.BeginTime = TimeSpan.FromSeconds(5);//開始時間

sbd.Begin(this);

void slider1_ValueChanged(object sender,

RoutedPropertyChangedEventArgs<double>

e)

myPCamera.Position = new Point3D(slider1.Value , slider2.Value,

slider3.Value);

void slider2_ValueChanged(object sender,

myPCamera.Position = new Point3D(slider1.Value, slider2.Value,

void slider3_ValueChanged(object sender,

void slider4_ValueChanged(object sender,

aar.Angle = slider4.Value;