wpf 写一个3D照片墙
时间: 2023-12-20 15:04:50 浏览: 34
要实现一个3D照片墙,可以使用 WPF 的 3D 功能和动画效果。以下是一个简单的示例:
首先,在 XAML 中定义一个 `Viewport3D` 元素和一个 `ModelVisual3D` 元素,用于存放 3D 模型和相机:
```xml
<Viewport3D x:Name="viewport">
<Viewport3D.Camera>
<PerspectiveCamera Position="0,0,5" LookDirection="0,0,-1" UpDirection="0,1,0" FieldOfView="60" />
</Viewport3D.Camera>
<ModelVisual3D x:Name="model">
</ModelVisual3D>
</Viewport3D>
```
然后,在代码中创建一个照片墙模型,并将其添加到 `ModelVisual3D` 中:
```csharp
// 创建一个照片墙模型
Model3DGroup photosModel = new Model3DGroup();
for (int i = 0; i < photoPaths.Length; i++)
{
// 加载照片贴图
ImageBrush brush = new ImageBrush(new BitmapImage(new Uri(photoPaths[i], UriKind.RelativeOrAbsolute)));
// 创建一个照片立方体
MeshGeometry3D mesh = new MeshGeometry3D();
mesh.Positions.Add(new Point3D(-1, 1, 0));
mesh.Positions.Add(new Point3D(1, 1, 0));
mesh.Positions.Add(new Point3D(1, -1, 0));
mesh.Positions.Add(new Point3D(-1, -1, 0));
mesh.TextureCoordinates.Add(new Point(0, 0));
mesh.TextureCoordinates.Add(new Point(1, 0));
mesh.TextureCoordinates.Add(new Point(1, 1));
mesh.TextureCoordinates.Add(new Point(0, 1));
mesh.TriangleIndices.Add(0);
mesh.TriangleIndices.Add(1);
mesh.TriangleIndices.Add(2);
mesh.TriangleIndices.Add(0);
mesh.TriangleIndices.Add(2);
mesh.TriangleIndices.Add(3);
// 应用照片贴图
GeometryModel3D geometry = new GeometryModel3D(mesh, new DiffuseMaterial(brush));
photosModel.Children.Add(geometry);
}
// 将照片墙模型添加到 ModelVisual3D 中
model.Content = photosModel;
```
接下来,为每个照片立方体设置动画效果。可以使用 `DoubleAnimation` 类实现照片的旋转和移动:
```csharp
// 为每个照片立方体设置动画效果
for (int i = 0; i < photoPaths.Length; i++)
{
// 创建旋转动画
RotateTransform3D rotateTransform = new RotateTransform3D(new AxisAngleRotation3D(new Vector3D(0, 1, 0), 0));
DoubleAnimation rotateAnimation = new DoubleAnimation();
rotateAnimation.From = 0;
rotateAnimation.To = 360;
rotateAnimation.Duration = TimeSpan.FromSeconds(10);
rotateAnimation.RepeatBehavior = RepeatBehavior.Forever;
rotateTransform.Rotation.BeginAnimation(AxisAngleRotation3D.AngleProperty, rotateAnimation);
// 创建移动动画
DoubleAnimation moveAnimation = new DoubleAnimation();
moveAnimation.From = -5;
moveAnimation.To = 5;
moveAnimation.Duration = TimeSpan.FromSeconds(5);
moveAnimation.AutoReverse = true;
moveAnimation.RepeatBehavior = RepeatBehavior.Forever;
// 应用动画效果
Transform3DGroup transformGroup = new Transform3DGroup();
transformGroup.Children.Add(new TranslateTransform3D(i * 2.2 - photoPaths.Length, 0, 0));
transformGroup.Children.Add(rotateTransform);
transformGroup.Children.Add(new TranslateTransform3D(0, 0, 5));
photosModel.Children[i].Transform = transformGroup;
photosModel.Children[i].Transform.BeginAnimation(TranslateTransform3D.OffsetXProperty, moveAnimation);
}
```
最后,运行应用程序即可看到 3D 照片墙的效果。可以通过调整相机的位置和方向,以及调整照片的数量和位置,来实现不同的效果。