private static void RetargetGlyphRectangleOutwards(BitmapData bitmapData, GLFontGlyph glyph, bool setYOffset, byte alphaTolerance)
{
int startX, endX;
int startY, endY;
var rect = glyph.Rect;
EmptyDel emptyPix;
if (bitmapData.PixelFormat == PixelFormat.Format32bppArgb)
{
emptyPix = delegate(BitmapData data, int x, int y) { return(GLFontBitmap.EmptyAlphaPixel(data, x, y, alphaTolerance)); }
}
;
else
{
emptyPix = delegate(BitmapData data, int x, int y) { return(GLFontBitmap.EmptyPixel(data, x, y)); }
};
unsafe
{
for (startX = rect.X; startX >= 0; startX--)
{
bool foundPix = false;
for (int j = rect.Y; j <= rect.Y + rect.Height; j++)
{
if (!emptyPix(bitmapData, startX, j))
{
foundPix = true;
break;
}
}
if (foundPix)
{
startX++;
break;
}
}
for (endX = rect.X + rect.Width; endX < bitmapData.Width; endX++)
{
bool foundPix = false;
for (int j = rect.Y; j <= rect.Y + rect.Height; j++)
{
if (!emptyPix(bitmapData, endX, j))
{
foundPix = true;
break;
}
}
if (foundPix)
{
endX--;
break;
}
}
for (startY = rect.Y; startY >= 0; startY--)
{
bool foundPix = false;
for (int i = startX; i <= endX; i++)
{
if (!emptyPix(bitmapData, i, startY))
{
foundPix = true;
break;
}
}
if (foundPix)
{
startY++;
break;
}
}
for (endY = rect.Y + rect.Height; endY < bitmapData.Height; endY++)
{
bool foundPix = false;
for (int i = startX; i <= endX; i++)
{
if (!emptyPix(bitmapData, i, endY))
{
foundPix = true;
break;
}
}
if (foundPix)
{
endY--;
break;
}
}
}
glyph.Rect = new Rectangle(startX, startY, endX - startX + 1, endY - startY + 1);
if (setYOffset)
{
glyph.YOffset = glyph.Rect.Y;
}
}
private static void RetargetGlyphRectangleInwards(BitmapData bitmapData, GLFontGlyph glyph, bool setYOffset, byte alphaTolerance)
{
int startX, endX;
int startY, endY;
var rect = glyph.Rect;
EmptyDel emptyPix;
if (bitmapData.PixelFormat == PixelFormat.Format32bppArgb)
{
emptyPix = delegate(BitmapData data, int x, int y) { return(GLFontBitmap.EmptyAlphaPixel(data, x, y, alphaTolerance)); }
}
;
else
{
emptyPix = delegate(BitmapData data, int x, int y) { return(GLFontBitmap.EmptyPixel(data, x, y)); }
};
unsafe
{
for (startX = rect.X; startX < bitmapData.Width; startX++)
{
for (int j = rect.Y; j < rect.Y + rect.Height; j++)
{
if (!emptyPix(bitmapData, startX, j))
{
goto Done1;
}
}
}
Done1:
for (endX = rect.X + rect.Width - 1; endX >= 0; endX--)
{
for (int j = rect.Y; j < rect.Y + rect.Height; j++)
{
if (!emptyPix(bitmapData, endX, j))
{
goto Done2;
}
}
}
Done2:
for (startY = rect.Y; startY < bitmapData.Height; startY++)
{
for (int i = startX; i < endX; i++)
{
if (!emptyPix(bitmapData, i, startY))
{
goto Done3;
}
}
}
Done3:
for (endY = rect.Y + rect.Height - 1; endY >= 0; endY--)
{
for (int i = startX; i < endX; i++)
{
if (!emptyPix(bitmapData, i, endY))
{
goto Done4;
}
}
}
Done4 :;
}
if (endY < startY)
{
startY = endY = rect.Y;
}
if (endX < startX)
{
startX = endX = rect.X;
}
glyph.Rect = new Rectangle(startX, startY, endX - startX + 1, endY - startY + 1);
if (setYOffset)
{
glyph.YOffset = glyph.Rect.Y;
}
}