private void prepare(string text, Dictionary <char, CharTextureInfo> characters, Func <ICharacterDrawer> drawerMaker)
{
this.Initialize();
var missinCharacters = new HashSet <char>();
foreach (char c in text)
{
if (!characters.ContainsKey(c) && !char.IsWhiteSpace(c))
{
missinCharacters.Add(c);
}
}
if (missinCharacters.Count == 0)
{
return;
}
using (var drawer = drawerMaker())
foreach (char c in missinCharacters)
{
characters[c] = new CharTextureInfo(drawer.Draw(c), Width, Height);
}
TextureUtils.UpdateTexture(this.TextureId, this.textureBitmap);
}
private void prepare(string text)
{
this.Initialize();
var missinCharacters = new HashSet <char>();
foreach (char c in text)
{
if (!this.characterInfos.ContainsKey(c) && !char.IsWhiteSpace(c))
{
missinCharacters.Add(c);
}
}
if (missinCharacters.Count == 0)
{
return;
}
foreach (char c in missinCharacters)
{
var path = new GraphicsPath();
path.AddString(c.ToString(), font.FontFamily, (int)font.Style, font.Size, new Point(0, 0), StringFormat.GenericTypographic);
path.Flatten();
var contures = getContures(path).ToList();
var minX = (int)Math.Floor(path.PathPoints.Min(p => p.X));
var maxX = (int)Math.Ceiling(path.PathPoints.Max(p => p.X));
var minY = (int)Math.Floor(path.PathPoints.Min(p => p.Y));
var maxY = (int)Math.Ceiling(path.PathPoints.Max(p => p.Y));
path.Dispose();
var width = maxX - minX;
var height = maxY - minY;
var rect = this.textureBuilder.Add(new Size(width + SdfPadding * 2, height + SdfPadding * 2));
var distField = new double[rect.Size.Height, rect.Size.Width];
for (int y = 0; y < rect.Size.Height; y++)
{
for (int x = 0; x < rect.Size.Width; x++)
{
var fromP = new Vector2(x + minX - SdfPadding, y + minY - SdfPadding);
var minDist = Math.Min(contures.Min(shape => shape.Distance(fromP)), SdfPadding);
if (contures.Sum(shape => shape.RayHits(fromP)) % 2 != 0)
{
minDist *= -1;
}
distField[y, x] = -minDist / SdfPadding / 2 + 0.5;
}
}
for (int y = 0; y < rect.Size.Height; y++)
{
for (int x = 0; x < rect.Size.Width; x++)
{
this.textureData[rect.X + x, rect.Y + y] = Color.FromArgb((int)(distField[y, x] * 255), 255, 255, 255);
}
}
this.characterInfos[c] = new CharTextureInfo(
rect,
this.textureData.Width, this.textureData.Height,
rect.Size.Width / font.Size,
rect.Size.Height / font.Size,
(minX + maxX) / font.Size / 2,
-(minY + maxY) / font.Size / 2,
maxX / font.Size,
maxY / font.Size
);
}
TextureUtils.UpdateTexture(this.TextureId, this.textureData);
}
