我有一个用
WPF 3D图形创建的图像查看器.图像质量真的很糟糕,所以我开始研究这个问题,创建了一个简单的应用程序,它使用窗口顶部的2D图形显示图像,底部使用3D图形显示相同的图像.我注意到3D图像上的图像看起来比2D上差. 3D表面上的颜色饱和度较低,边界不清晰.请注意,我将线性位图缩放模式应用于根网格.其他奇怪的是,当我将位图缩放模式更改为’Fant’或’NearestNeighbor’时,它会影响2D图形,但3D表面上的图像仍然相同!我正在使用此样本的图像,高度= 466px,宽度= 490px.我在代码(2D和3D实现)中稍微缩小它以查看缩放质量下降.代码是:
<Window x:Class="Scaling3DSample.Window2"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Width="340">
<Grid x:Name="backgroundGrid">
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition />
</Grid.RowDefinitions>
</Grid>
</Window>
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Media.Media3D;
using System.Windows.Shapes;
namespace Scaling3DSample
{
public partial class Window2 : Window
{
private static double _distanceFromCamera = 0.62618;
public Window2()
{
InitializeComponent();
RenderOptions.SetBitmapScalingMode(backgroundGrid, BitmapScalingMode.Linear);
Create2DGraphics();
// THE SAME IMAGE ON 3D SURFACE LOOKS MUCH WORSE
Create3DGraphics();
}
private void Create2DGraphics()
{
Rectangle exampleRectangle = new Rectangle();
Grid.SetRow(exampleRectangle, 0);
exampleRectangle.Width = 335;
exampleRectangle.Height = 317;
exampleRectangle.Fill = GetBrush();
backgroundGrid.Children.Add(exampleRectangle);
}
private void Create3DGraphics()
{
Viewport3D mainViewPort3D = new Viewport3D();
Grid.SetRow(mainViewPort3D, 1);
mainViewPort3D.Camera = new PerspectiveCamera { LookDirection = new Vector3D(-1, 0, 0), UpDirection = new Vector3D(0, 0, 1), FieldOfView = 77.0942 };
mainViewPort3D.Children.Add(new ModelVisual3D { Content = new AmbientLight() });
MeshGeometry3D geometry3D = new MeshGeometry3D();
Point3D topLeft = new Point3D(-_distanceFromCamera, 0.5, -0.5);
Point3D bottomRight = new Point3D(-_distanceFromCamera, -0.5, 0.5);
geometry3D.Positions.Add(bottomRight);
geometry3D.Positions.Add(new Point3D(-_distanceFromCamera, topLeft.Y, bottomRight.Z));
geometry3D.Positions.Add(new Point3D(-_distanceFromCamera, bottomRight.Y, topLeft.Z));
geometry3D.Positions.Add(topLeft);
geometry3D.TriangleIndices.Add(1);
geometry3D.TriangleIndices.Add(0);
geometry3D.TriangleIndices.Add(2);
geometry3D.TriangleIndices.Add(2);
geometry3D.TriangleIndices.Add(3);
geometry3D.TriangleIndices.Add(1);
geometry3D.TextureCoordinates.Add(new Point(0, 0));
geometry3D.TextureCoordinates.Add(new Point(1, 0));
geometry3D.TextureCoordinates.Add(new Point(0, 1));
geometry3D.TextureCoordinates.Add(new Point(1, 1));
Material material = new DiffuseMaterial(GetBrush());
ModelVisual3D modelForGeometry = new ModelVisual3D { Content = new GeometryModel3D(geometry3D, material) };
mainViewPort3D.Children.Add(modelForGeometry);
backgroundGrid.Children.Add(mainViewPort3D);
}
private ImageBrush GetBrush()
{
// put any other image URI here, image Height = 466px, Width = 490px
ImageBrush brush = new ImageBrush(new BitmapImage(new Uri("lion.jpg", UriKind.Relative)));
brush.Stretch = Stretch.Fill;
return brush;
}
}
}
在此先感谢您的帮助!
最佳答案 那么还有一些其他变量需要考虑.
尽管WPF要求更好看的东西,但您的显卡设置可能会强制插值模式下降. WPF的3D在第2层硬件上进行硬件加速,因此请检查驱动程序的控制软件. WPF可能无法更好地请求任何内容!
尝试在应用程序和图形卡设置中启用消除锯齿功能.