C# 系统。具有大偏移矩阵的图纸质量问题

我遇到了一个问题，当图形矩阵具有较大偏移值时，图形文本和基本图形绘制操作没有正确的位置和质量。我尝试了数字平滑模式、插值模式和文本渲染提示选项，但没有成功

using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;

public void RenderImageClosePointDrawing()
    {
        float x = 68336, y = 99460;            
        PointF anchorPoint = new PointF(17494176, 25461836);
        PointF anchorPoint2= new PointF(17494076, 25461836);
        string textLabel = "9318";
        float textFontSize = 20;
        float symbolsize = 34;
        string fontFamly = "Arial";

        Bitmap bitmap = new Bitmap(256, 256);
        using (Graphics graphics = Graphics.FromImage(bitmap))
        {
            graphics.SmoothingMode = SmoothingMode.HighQuality;                
            graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
            graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit;

            graphics.Transform = new Matrix(1, 0, 0, 1, -x * 256, -y * 256);

            //Draw the circle
            Pen polyPen = new Pen(new SolidBrush(Color.Black), 2);
            Brush polyBrush = new SolidBrush(Color.Teal);
            graphics.DrawEllipse(polyPen, anchorPoint.X, anchorPoint.Y, symbolsize, symbolsize);
            graphics.FillEllipse(polyBrush, anchorPoint.X, anchorPoint.Y, symbolsize, symbolsize);
            RectangleF drawnArea = new RectangleF(anchorPoint.X, anchorPoint.Y, symbolsize, symbolsize);

            Pen polyPen2 = new Pen(new SolidBrush(Color.Black), 1);
            Brush polyBrush2 = new SolidBrush(Color.Teal);
            graphics.DrawEllipse(polyPen2, anchorPoint2.X, anchorPoint2.Y, symbolsize, symbolsize);
            graphics.FillEllipse(polyBrush2, anchorPoint2.X, anchorPoint2.Y, symbolsize, symbolsize);
            RectangleF drawnArea2 = new RectangleF(anchorPoint2.X, anchorPoint2.Y, symbolsize, symbolsize);

            Pen polyPen3 = new Pen(new SolidBrush(Color.Red), 1);
            graphics.DrawRectangle(polyPen3, drawnArea.X, drawnArea.Y, drawnArea.Width, drawnArea.Height);
            graphics.DrawRectangle(polyPen3, drawnArea2.X, drawnArea2.Y, drawnArea2.Width, drawnArea2.Height);

            //Draw the text
            Pen textOutlinePen = new Pen(new SolidBrush(Color.Orange), (float)4);
            textOutlinePen.EndCap = LineCap.Round;
            textOutlinePen.LineJoin = LineJoin.Round;
            textOutlinePen.MiterLimit = 0;
            Brush textFillBrush = new SolidBrush(Color.Teal);
            FontFamily textFontFamily = new FontFamily(fontFamly);

            PointF textAnchor = new PointF(anchorPoint.X, anchorPoint.Y);

            ShiftTextAnchor_NW(textLabel, textFontSize, ref drawnArea, textFontFamily, ref textAnchor);

            var textPath = new GraphicsPath();
            textPath.AddString(textLabel,
                            textFontFamily,
                            (int)FontStyle.Bold,
                            textFontSize,
                            textAnchor,
                            new StringFormat()
                        );
            graphics.DrawPath(textOutlinePen, textPath);
            graphics.FillPath(textFillBrush, textPath);



            //Draw the text2
            Pen textOutlinePen2 = new Pen(new SolidBrush(Color.Orange), (float)1);
            textOutlinePen.EndCap = LineCap.Round;
            textOutlinePen.LineJoin = LineJoin.Round;
            textOutlinePen.MiterLimit = 0;

            PointF textAnchor2 = new PointF(anchorPoint2.X, anchorPoint2.Y);

            ShiftTextAnchor_NW(textLabel, textFontSize, ref drawnArea2, textFontFamily, ref textAnchor2);

            var textPath2 = new GraphicsPath();
            textPath2.AddString(textLabel,
                            textFontFamily,
                            (int)FontStyle.Bold,
                            textFontSize,
                            textAnchor2,
                            new StringFormat()
                        );
            graphics.DrawPath(textOutlinePen2, textPath2);
            graphics.FillPath(textFillBrush, textPath2);

        }
        bitmap.Save(@"C:\ClosePointDrawing.png", ImageFormat.Png);
    }

private static void ShiftTextAnchor_NW(string textLabel, float textFontSize, ref RectangleF drawnArea, FontFamily textFontFamily, ref PointF textAnchor)
    {
        GraphicsPath tempPath = new GraphicsPath();
        tempPath.AddString(
                textLabel,
                textFontFamily,
                (int)FontStyle.Bold,
                textFontSize,
                textAnchor,
                new StringFormat()
            );
        var textBounds = tempPath.GetBounds();
        var offsetX = textBounds.X - textAnchor.X;
        var offsetY = textBounds.Y - textAnchor.Y;

        textAnchor = new PointF(drawnArea.Left - (textBounds.Width + offsetX), drawnArea.Top - (textBounds.Height + offsetY));
    }      

运行此代码时，您将获得以下输出：

您会注意到文本看起来不好看（有些失真），而且当使用1像素笔划时，圆圈周围的黑色笔划轮廓仅与其青色填充的圆圈正确对齐，而圆圈位于左侧。右边的一个使用2像素的笔划。您还将看到，红色的正方形没有与青色圆圈对齐，它们应该完全封装它

现在，如果更改代码中的前几个值，使其不使用大偏移量，如下所示：

float x=0，y=0；
PointF anchorPoint=新的PointF（150,50）；
PointF anchorPoint2=新的PointF（50,50）

您将获得以下输出：
请注意，文本看起来更好，笔划与填充的圆圈以及红色正方形完美对齐

有什么可以做的，以便它能用更大的矩阵正确地渲染它吗？
我想知道GDI+是否能处理如此大的值，并且它产生了任何结果。你为什么要做这样的事情，并在256x256位图上进行处理？？？以便在最近的缩放级别处理谷歌地图平铺坐标。因此，处理这个问题的唯一方法是自己进行偏移调整，而不是使用转换矩阵？GDI+使用32位浮点值进行内部数学运算。与C#程序中的float相同。精度是相当有限的，当你做任何数学运算时，最多6个有效数字。请注意，17494176已经远远超出了这一范围，舍入错误会让事情变得不正常。您必须编写更智能的代码。