c# - SharpDx:设置字符宽度

我正在使用SharpDX编写C#Direct2D应用程序，但是我可以理解C++中提供的答案/示例。

我想渲染文本并更改某些字符的宽度，使其看起来像图片:



字母B扩大到200％，字母D减少到50％

在下面的代码中，我绘制了字形的几何形状
这样就可以改变几何图形的宽度
但这不是一个好的解决方案，因为几何图形的绘制就像您在图片中看到的那样模糊。



总之，有两个问题:

如何更改字符的宽度？

如何绘制字母的几何图形而不会模糊。 (是否可以使用ClearType渲染几何图形？)

private void RenderGlyphRun1(FontFace1 fontFace)
{
    var Offsets = new List<GlyphOffset>();
    var fontEmSize_ = 12;
    GlyphRun glyphRun = new GlyphRun();
    glyphRun.FontFace = fontFace;
    glyphRun.FontSize = fontEmSize_;
    glyphRun.BidiLevel = 1;
    var left = 650f;
    var top = 50f;

    var baseLine = (float)(fontFace.Metrics.LineGap + fontFace.Metrics.Ascent) /
        fontFace.Metrics.DesignUnitsPerEm * glyphRun.FontSize;

    string textToDraw = "ABCDE";
    foreach (char letter in textToDraw)
    {
        Offsets.Add(new GlyphOffset());
    }

    var charArr = textToDraw.Select(x => (int)x).ToArray();
    glyphRun.Indices = fontFace.GetGlyphIndices(charArr);

    var metrics = fontFace.GetDesignGlyphMetrics(glyphRun.Indices, false);
    glyphRun.Advances = metrics.Select(x => (float)x.AdvanceWidth /
             fontFace.Metrics.DesignUnitsPerEm * glyphRun.FontSize).ToArray();

    glyphRun.Offsets = Offsets.ToArray();

    RenderTarget2D.BeginDraw();
    RenderTarget2D.Clear(SharpDX.Color.White);

    RenderTarget2D.DrawGlyphRun(new Vector2(left, top),
        glyphRun, new SharpDX.Direct2D1.SolidColorBrush(RenderTarget2D, SharpDX.Color.Black),
        MeasuringMode.Natural);

    top += baseLine;

    var pathGeometry = new PathGeometry(Factory2D);
    var geometrySink = pathGeometry.Open();

    fontFace.GetGlyphRunOutline(glyphRun.FontSize, glyphRun.Indices,
        glyphRun.Advances, glyphRun.Offsets, glyphRun.IsSideways,
        glyphRun.BidiLevel % 2 != 0, geometrySink);

    geometrySink.Close();
    geometrySink.Dispose();
    fontFace.Dispose();

    var matrix = new Matrix3x2()
    {
        M11 = 1,
        M12 = 0,
        M21 = 0,
        M22 = 1,
        M31 = left,
        M32 = top
    };

    var transformedGeometry = new TransformedGeometry(Factory2D, pathGeometry, matrix);
    var brushColor = (Color4)SharpDX.Color.Black;
    var brush = new SolidColorBrush(RenderTarget2D, brushColor);
    RenderTarget2D.FillGeometry(transformedGeometry, brush);

    pathGeometry.Dispose();
    transformedGeometry.Dispose();
    brush.Dispose();

    RenderTarget2D.EndDraw();
}

最佳答案

由于某些字母应较窄，某些字母应较宽，有些字母应较宽，因此您不能使用一个GlyphRun，而必须创建3个不同的GlyphRun。

使任何GlyphRun的所有字母变宽或变窄:

将Transform配置为RenderTarget

绘制GlyphRun

返回原始的Transform

宽转换:RenderTarget2D.Transform = new SharpDX.Mathematics.Interop.RawMatrix3x2(1.5f, 0, 0, 1, 0, 0);
窄变换:RenderTarget2D.Transform = new SharpDX.Mathematics.Interop.RawMatrix3x2(0.5f, 0, 0, 1, 0, 0);
在此解决方案之后，您无需将GlyphRun转换为geometry并与模糊字母混在一起。