WPF动态加载3D 放大-旋转-平移

原文:WPF动态加载3D 放大-旋转-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" />

       
<Slider Height="23" HorizontalAlignment="Left"
Margin="49,288,0,0" Name="slider2" VerticalAlignment="Top"
Width="100" Maximum="1000" />

       
<Slider Height="23" HorizontalAlignment="Left"
Margin="367,288,0,0" Name="slider3" VerticalAlignment="Top"
Width="100" Minimum="200" Maximum="2000" />

       
<Slider Height="23" HorizontalAlignment="Left"
Margin="567,288,0,0" Name="slider4" VerticalAlignment="Top"
Width="100" Minimum="200" Maximum="2000" />

   
</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 //摄像机

       
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);//摄影机看的方向

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

           
myPCamera.FieldOfView = 45;//法向量
摄影机上下颠倒,左转右转           
myPCamera.NearPlaneDistance = 0.1;

           
myPCamera.FarPlaneDistance = 11050;

vp.Camera = myPCamera;

       
}

       
#endregion

       
#region //模型

       
private void createModel3D()

       
{

           
myModel3DGroup = new Model3DGroup();

           
myModel3DGroup.Children.Add(myDirectionalLight);

var m =
wfl.LoadObjFile(@"C:/Users/Adminstrator/Desktop/3D动态加载/WpfApplication2/xx.obj");

m.Content = myModel3DGroup;

vp.Children.Add(m);

       
}

       
#endregion

       
#region //360旋转动作

       
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);//开始时间

           
sbd.Begin(this);

       
}

       
#endregion

       
void slider1_ValueChanged(object sender,
RoutedPropertyChangedEventArgs<double>
e)

       
{

           
myPCamera.Position = new Point3D(slider1.Value , slider2.Value,
slider3.Value);

       
}

       
void slider2_ValueChanged(object sender,
RoutedPropertyChangedEventArgs<double>
e)

       
{

           
myPCamera.Position = new Point3D(slider1.Value, slider2.Value,
slider3.Value);

       
}

       
void slider3_ValueChanged(object sender,
RoutedPropertyChangedEventArgs<double>
e)

       
{

           
myPCamera.Position = new Point3D(slider1.Value, slider2.Value,
slider3.Value);

       
}

       
void slider4_ValueChanged(object sender,
RoutedPropertyChangedEventArgs<double>
e)

       
{

           
aar.Angle = slider4.Value;

       
}