如果放置在Viewport2DVisual3D上的画布较大，则会变得模糊

本文介绍了如果放置在Viewport2DVisual3D上的画布较大，则会变得模糊的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

在我的应用程序中，我需要以3D放置绘图环境(即平坦地形)，为此，我要在从画布派生的类上绘制网格，然后直接在其上放置线条.

In my application, i need to place the drawing environment (i.e. flat terrain) in 3D, for which I am drawing the grid on a class derived from canvas, and placing lines directly on it.

我正在用这些笔画线:

Pen gridPen = new Pen(Brushes.Black, 0.2); //Pen for drawing basic line
Pen gridPen2 = new Pen(Brushes.Black, 0.5); //pen for drawing the thick line after 5 intervals

// And later the lines are added to a DrawingVisual and that is added to the Canvas using base.AddVisualChild()
// and base,AddLogicalChild()

但是，只要画布尺寸保持在接近2000 x 2000以下，它仍然可以使用，但是当画布尺寸超过3000 x 3000时，网格将失去清晰度，变得模糊，有时甚至看不到某些线条.

But as long as the canvas size remains under almost 2000 x 2000, it remains fine, but when it increases beyond 3000 x 3000 , the grid loses its sharpness, becomes blurred and sometimes some lines become invisible.

如果它变得很大，则所有内容都将变得模糊并且缺少许多行，并且所有内容都会变得奇怪

If it becomes very large, everything is s blurred and many lines are missing and everything is strange

使用Model3DGroup创建的其他模型在任何尺寸上都是清晰的.我正在使用透视相机在viewport3d上查看它，并且在xaml中将Viewport2DVisual3D声明为:

Other models created using Model3DGroup are sharp in any size. I am using perspective camera to view it on viewport3d, and the Viewport2DVisual3D is declared in xaml as:

<Viewport2DVisual3D x:Name="testVisual3d">
                    
                    <Viewport2DVisual3D.Transform>
                        <RotateTransform3D>
                            <RotateTransform3D.Rotation>
                                <AxisAngleRotation3D Angle="0" Axis="0, 0, 0" />
                            </RotateTransform3D.Rotation>
                        </RotateTransform3D>
                    </Viewport2DVisual3D.Transform>

                    
                    <Viewport2DVisual3D.Geometry>
                        <MeshGeometry3D Positions="0,0,0 0,0,100 100,0,100 100,0,0"
                            TextureCoordinates="0,0 0,1 1,1 1,0" TriangleIndices="0 1 2 0 2 3"/>
                    </Viewport2DVisual3D.Geometry>

                    <Viewport2DVisual3D.Material>
                        <DiffuseMaterial Viewport2DVisual3D.IsVisualHostMaterial="True" Brush="White"/>
                    </Viewport2DVisual3D.Material>

                  <!--  <Canvas>
                    <Button Width="20">Hello, 1D</Button>
                        <Button >Hello, 2D</Button>
                        
                    </Canvas> -->
                </Viewport2DVisual3D>

如何解决这个问题?包括屏幕截图，

How to fix this issue? Screenshots included,

画布尺寸为800 x 800且Viewport2DVisual3D的要点的第一张图片是:

first image with canvas size 800 x 800 and Viewport2DVisual3D's points are:

<MeshGeometry3D Positions="0,0,0 0,0,100 100,0,100 100,0,0"

画布尺寸为2000 x 2000的第二张图片和Viewport2DVisual3D的要点是:

second image with canvas size of 2000 x 2000 and Viewport2DVisual3D's points are:

<MeshGeometry3D Positions="0,0,0 0,0,100 100,0,100 100,0,0"

画布尺寸为3200 x 3200的第三张图片和Viewport2DVisual3D的要点是:

third image with canvas size of 3200 x 3200 and Viewport2DVisual3D's points are:

<MeshGeometry3D Positions="0,0,0 0,0,100 100,0,100 100,0,0"

第四张图像的画布大小为6400 x 6400，Viewport2DVisual3D的点为:

fourth image is with canvas size 6400 x 6400 and Viewport2DVisual3D's points are:

<MeshGeometry3D Positions="0,0,0 0,0,100 100,0,100 100,0,0"

如何解决此问题?将来会有更多项目放置在画布上，那么如何解决此问题?

How to fix this issue? In future there'll be more items placed on the Canvas, so how to fix this issue?

屏幕截图:

PerspectiveCamera有

PerspectiveCamera has

FarPlaneDistance="1000"

和

NearPlaneDistance="1"

Viewport2DVisual3D

如果放置在Viewport2DVisual3D上的画布较大，则会变得模糊

问题描述

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