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;
}