private Glyph GenerateOutline(char c)
{
LoadGlyph(c);
var sz = new Size(face.Glyph.Metrics.Width.ToInt32(), face.Glyph.Metrics.Height.ToInt32());
if (sz == Size.Empty)
{
return new Glyph {
Advance = face.Glyph.Advance.X.ToSingle()
}
}
;
using (var glyph = face.Glyph.GetGlyph())
using (var stroker = new Stroker(face.Glyph.Library))
{
stroker.Set(64 * 1, StrokerLineCap.Round, StrokerLineJoin.Round, 0);
using (var strokedGlyph = glyph.StrokeBorder(stroker, false, false))
{
strokedGlyph.ToBitmap(RenderMode.Normal, new FTVector26Dot6(), false);
var bbox = strokedGlyph.GetCBox(GlyphBBoxMode.Pixels);
var image = ToPixmap(strokedGlyph.ToBitmapGlyph().Bitmap);
return(new Glyph
{
Advance = strokedGlyph.Advance.X.ToSingle(),
Offset = new Point2D(bbox.Left, -bbox.Top),
Image = atlas.Add(image)
});
}
}
}
public static bool LoadGlyph(ref Texture_Font_T font, char codepoint)
{
int i;
int x;
int y;
Glyph glyph;
GlyphSlot glyphSlot;
FTBitmap fTBitmap;
uint glyphindex;
Texture_Glyph_T glyph_T;
int glyphtop = 0;
int glyphleft = 0;
Region region;
int missed = 0;
//check glyph has not already been loaded
if (FindGlyph(ref font, codepoint, out glyph_T))
{
return(true);
}
// handle null codepoint
if (codepoint == '\0')
{
region = Atlas.Atlas.GetRegion(ref font.Atlas, 5, 5);
glyph_T = InitGlyph();
byte[] data = new byte[4 * 4 * 3] {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
if (region.X < 0)
{
//throw new Exception("texture atlas is full!");
return(false);
}
Atlas.Atlas.SetRegion(ref font.Atlas, region.X, region.Y, 4, 4, data, 0);
glyph_T.Codepoint = -1;
glyph_T.S01 = (region.X + 2) / (float)font.Atlas.Width;
glyph_T.T01 = (region.Y + 2) / (float)font.Atlas.Height;
glyph_T.S11 = (region.X + 3) / (float)font.Atlas.Width;
glyph_T.T11 = (region.Y + 3) / (float)font.Atlas.Height;
font.Glyphs.Add(glyph_T);
return(true);
}
LoadFlags flags = 0;
LoadTarget target = 0;
glyphindex = face.GetCharIndex((uint)char.ConvertToUtf32(codepoint.ToString(), 0));
if (font.Rendermode != RenderMode.RENDER_NORMAL && font.Rendermode != RenderMode.RENDER_SIGNED_DISTANCE_FIELD)
{
flags |= LoadFlags.NoBitmap;
}
else
{
flags |= LoadFlags.Render;
}
if (!font.Hinting)
{
flags |= LoadFlags.NoHinting | LoadFlags.NoAutohint;
}
else
{
flags |= LoadFlags.ForceAutohint;
}
if (font.Atlas.Depth == 3)
{
library.SetLcdFilter(LcdFilter.Light);
target |= LoadTarget.Lcd;
if (font.Filtering)
{
library.SetLcdFilterWeights(font.Lcd_filter_weights);
}
}
else if (HRES == 1)
{
target |= LoadTarget.Light;
}
face.LoadGlyph(glyphindex, flags, target);
if (font.Rendermode == RenderMode.RENDER_NORMAL || font.Rendermode == RenderMode.RENDER_SIGNED_DISTANCE_FIELD)
{
glyphSlot = face.Glyph;
fTBitmap = glyphSlot.Bitmap;
glyphtop = glyphSlot.BitmapTop;
glyphleft = glyphSlot.BitmapLeft;
}
else
{
Stroker stroker = new Stroker(library);
BitmapGlyph bitmapGlyph;
stroker.Set((int)(font.Outlinethickness * HRES), StrokerLineCap.Round, StrokerLineJoin.Round, 0);
glyph = face.Glyph.GetGlyph();
if (font.Rendermode == RenderMode.RENDER_OUTLINE_EDGE)
{
glyph.Stroke(stroker, true);
}
else if (font.Rendermode == RenderMode.RENDER_OUTLINE_NEGATIVE)
{
glyph.StrokeBorder(stroker, true, true);
}
else if (font.Rendermode == RenderMode.RENDER_OUTLINE_POSITIVE)
{
glyph.StrokeBorder(stroker, false, true);
}
if (font.Atlas.Depth == 1)
{
glyph.ToBitmap(SharpFont.RenderMode.Normal, new FTVector26Dot6(0, 0), true);
}
else
{
glyph.ToBitmap(SharpFont.RenderMode.Lcd, new FTVector26Dot6(0, 0), true);
}
bitmapGlyph = glyph.ToBitmapGlyph();
fTBitmap = bitmapGlyph.Bitmap;
glyphtop = bitmapGlyph.Top;
glyphleft = bitmapGlyph.Left;
stroker.Dispose();
}
Padding padding = new Padding(0, 1, 0, 1);
if (font.Rendermode == RenderMode.RENDER_SIGNED_DISTANCE_FIELD)
{
padding.Top = 1;
padding.Left = 1;
}
if (font.Padding != 0)
{
padding.Left += font.Padding;
padding.Right += font.Padding;
padding.Top += font.Padding;
padding.Bottom += font.Padding;
}
int width = (fTBitmap.Width / font.Atlas.Depth) + padding.Left + padding.Right;
int height = fTBitmap.Rows + padding.Top + padding.Bottom;
region = Atlas.Atlas.GetRegion(ref font.Atlas, width, height);
if (region.X < 0)
{
//throw new exception("texture atlas full");
return(false);
}
byte[] data = new byte[width * height * font.Atlas.Depth];
data = fTBitmap.BufferData;
if (font.Rendermode == RenderMode.RENDER_SIGNED_DISTANCE_FIELD)
{
// todo ? where is make distance map comming from
throw new NotImplementedException();
}
Atlas.Atlas.SetRegion(ref font.Atlas, region.X, region.Y, width, height, data, width * font.Atlas.Depth);
glyph_T = InitGlyph();
glyph_T.Codepoint = (uint)char.ConvertToUtf32(codepoint.ToString(), 0);
glyph_T.Width = (uint)width;
glyph_T.Height = (uint)height;
glyph_T.RenderMode = font.Rendermode;
glyph_T.Outlinethickness = font.Outlinethickness;
glyph_T.OffsetX = glyphleft;
glyph_T.OffsetY = glyphtop;
glyph_T.S01 = region.X / (float)font.Atlas.Width;
glyph_T.T01 = region.Y / (float)font.Atlas.Height;
glyph_T.S11 = (region.X + width) / (float)font.Atlas.Width;
glyph_T.T11 = (region.Y + height) / (float)font.Atlas.Height;
face.LoadGlyph(glyphindex, LoadFlags.Render | LoadFlags.NoHinting, target);
glyphSlot = face.Glyph;
glyph_T.Advancex = glyphSlot.Advance.X.ToSingle();
glyph_T.Advancey = glyphSlot.Advance.Y.ToSingle();
font.Glyphs.Add(glyph_T);
if (font.Rendermode != RenderMode.RENDER_NORMAL && font.Rendermode != RenderMode.RENDER_SIGNED_DISTANCE_FIELD)
{
glyph.Dispose();
}
GenerateKerning(ref font);
return(true);
}