public void LoadGlyph()
{
Font font = new FontCollection().Install(TestFonts.SimpleFontFileData()).CreateFont(12);
// Get letter A
Glyph g = font.GetGlyph(41);
GlyphInstance instance = g.Instance;
Assert.Equal(20, instance.ControlPoints.Length);
Assert.Equal(20, instance.OnCurves.Length);
}
public void LoadFontWoff()
{
IFontInstance font = FontInstance.LoadFont(TestFonts.SimpleFontFileWoffData());
Assert.Equal("SixLaborsSampleAB regular", font.Description.FontName);
Assert.Equal("Regular", font.Description.FontSubFamilyName);
GlyphInstance glyph = font.GetGlyph('a');
var r = new GlyphRenderer();
glyph.RenderTo(r, 12, System.Numerics.Vector2.Zero, new System.Numerics.Vector2(72), 0);
// the test font only has characters .notdef, 'a' & 'b' defined
Assert.Equal(6, r.ControlPoints.Distinct().Count());
}
public bool GetAdvances(out float[] advances)
{
advances = null;
GlyphInstance firstInstance = FontInstance.GetGlyph(FirstChar);
float adv = firstInstance.AdvanceWidth * Size * (DrawDpi / CalcDpi) / firstInstance.SizeOfEm;
for (int i = FirstChar + 1; i <= LastChar; i++)
{
GlyphInstance inst = FontInstance.GetGlyph(i);
float iAdv = inst.AdvanceWidth * Size * (DrawDpi / CalcDpi) / inst.SizeOfEm;
if (advances == null)
{
if (iAdv != adv)
{
advances = new float[CharCount];
for (int c = 0; c < i - FirstChar; c++)
{
advances[c] = adv;
}
advances[i - FirstChar] = iAdv;
}
}
else
{
advances[i - FirstChar] = iAdv;
}
}
if (advances == null)
{
advances = new float[1] {
adv
};
return(false);
}
return(true);
}
/// <summary>
/// Creates the <see cref="IPathCollection"/> for all the characters, also getting their colors,
/// glyph sizes and render offsets.
/// </summary>
private IPathCollection[] CreatePaths(out Color?[][] colors, out System.Drawing.Point[] sizes, out Vector2[] offsets)
{
float glyphRenderY = Size / CalcDpi * FontInstance.Ascender / FontInstance.EmSize;
ColorGlyphRenderer glyphRenderer = new ColorGlyphRenderer();
IPathCollection[] paths = new IPathCollection[CharCount];
sizes = new System.Drawing.Point[paths.Length];
offsets = new Vector2[paths.Length];
colors = null;
for (int i = 0; i < paths.Length; i++)
{
char c = (char)(i + FirstChar);
glyphRenderer.Reset();
GlyphInstance glyphInstance = FontInstance.GetGlyph(c);
glyphInstance.RenderTo(glyphRenderer, Size, new Vector2(0, glyphRenderY), new Vector2(DrawDpi, DrawDpi), 0);
IPathCollection p = glyphRenderer.Paths;
RectangleF bounds = p.Bounds;
float area = bounds.Width * bounds.Height;
if (float.IsFinite(area) && area != 0 && (c > char.MaxValue || !char.IsWhiteSpace(c)))
{
paths[i] = p;
sizes[i] = new System.Drawing.Point((int)Math.Ceiling(bounds.Width), (int)Math.Ceiling(bounds.Height));
renderOffsets[i] = new Vector2(bounds.X, bounds.Y);
}
if (glyphRenderer.HasAnyPathColors())
{
if (colors == null)
{
colors = new Color?[CharCount][];
}
colors[i] = glyphRenderer.PathColors;
}
}
return(paths);
}
public unsafe FontAtlas(FontFamily fontFamily, int fontSize, IEnumerable <int> characters)
{
Stopwatch watch = new Stopwatch();
watch.Start();
Size = fontSize;
Font font = new Font(fontFamily, fontSize);
float factor = (float)fontSize / font.EmSize;
List <PackingRectangle> glyphRectangles = new List <PackingRectangle>();
foreach (int character in characters)
{
GlyphInstance glyph = font.GetGlyph(character).Instance;
glyphRectangles.Add(new PackingRectangle(0, 0, (uint)((glyph.LeftSideBearing + glyph.AdvanceWidth) * factor), (uint)(glyph.Height * factor), character));
}
PackingRectangle[] rectArray = glyphRectangles.ToArray();
RectanglePacker.Pack(rectArray, out PackingRectangle bounds);
Image <A8> image = new Image <A8>((int)bounds.Width, (int)bounds.Height);
Characters = new Dictionary <char, CharacterData>();
image.Mutate(x =>
{
foreach (PackingRectangle glyphRectangle in rectArray)
{
GlyphInstance glyph = font.GetGlyph(glyphRectangle.Id).Instance;
Characters.Add((char)glyphRectangle.Id, new CharacterData()
{
uvX1 = glyphRectangle.X / (float)image.Width,
uvX2 = (glyphRectangle.X + glyphRectangle.Width) / (float)image.Width,
uvY1 = glyphRectangle.Y / (float)image.Height,
uvY2 = (glyphRectangle.Y + glyphRectangle.Height) / (float)image.Height,
xAdvance = glyph.AdvanceWidth * factor,
height = glyph.Height * factor
});
x.DrawText(((char)glyphRectangle.Id).ToString(), font, Color.White,
new PointF(glyphRectangle.X, glyphRectangle.Y));
}
});
image.TryGetSinglePixelSpan(out Span <A8> pixels);
TextureId = GL.GenTexture();
GL.ActiveTexture(TextureUnit.Texture0);
GL.BindTexture(TextureTarget.Texture2D, TextureId);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)TextureWrapMode.ClampToEdge);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)TextureWrapMode.ClampToEdge);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.LinearMipmapLinear);
GL.PixelStore(PixelStoreParameter.UnpackAlignment, 1);
fixed(A8 *pixelPointer = pixels)
{
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Alpha, image.Width, image.Height, 0, PixelFormat.Alpha, PixelType.UnsignedByte, new IntPtr(pixelPointer));
}
GL.GenerateTextureMipmap(TextureId);
watch.Stop();
Console.WriteLine($"Font atlas with size {image.Width}x{image.Height} was created in {watch.ElapsedMilliseconds}ms!");
}
public override void apply(Bridge.Html5.CanvasRenderingContext2D context, GlyphInstance glyph)
{
throw new System.NotImplementedException();
}
public float GetAdvance(int size, int codepoint)
{
GlyphInstance inst = FontInstance.GetGlyph(codepoint);
return(inst.AdvanceWidth * size / FontInstance.EmSize);
}
public void Issue21_LoopDetectedLoadingGlyphs()
{
Font font = new FontCollection().Install(TestFonts.CarterOneFileData()).CreateFont(12);
GlyphInstance g = font.Instance.GetGlyph('\0');
}
public override void apply(Bridge.Html5.CanvasRenderingContext2D context, GlyphInstance glyph)
{
apply(context);
}
