alysbrooks-public » games » isometric-park-fna

Location: alysbrooks-public/games/isometric-park-fna/SpriteFontPlus/src/TtfFontBaker.cs - annotation

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Commit Description:
Add timers for Simulation and various engines...
Commit Description:
Add timers for Simulation and various engines Starting to add additional timers for different stages of the process of updating in order to get more insight into what is slowing it down. The update takes 9ms, which is much longer than it used to. Engine-specific timers are coming later.
References:
r588:3b7b6298ad9c m6-tiles-and-trees
File last commit:
r0:e33f209de7e5 default
Show/Diff file:
Action:
SpriteFontPlus/src/TtfFontBaker.cs
123 lines | 3.1 KiB | text/x-csharp | CSharpLexer
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alys
Early working version (including all dependencies, lol).
 r0 using SpriteFontPlus.Utility;
using StbTrueTypeSharp;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
namespace SpriteFontPlus
{
public static class TtfFontBaker
{
public static TtfFontBakerResult Bake(Stream ttfStream, float fontPixelHeight,
int bitmapWidth, int bitmapHeight,
IEnumerable<CharacterRange> characterRanges)
{
return Bake(ttfStream.ToByteArray(), fontPixelHeight, bitmapWidth, bitmapHeight, characterRanges);
}
public unsafe static TtfFontBakerResult Bake(byte[] ttf, float fontPixelHeight,
int bitmapWidth, int bitmapHeight,
IEnumerable<CharacterRange> characterRanges)
{
if (ttf == null || ttf.Length == 0)
{
throw new ArgumentNullException(nameof(ttf));
}
if (fontPixelHeight <= 0)
{
throw new ArgumentOutOfRangeException(nameof(fontPixelHeight));
}
if (bitmapWidth <= 0)
{
throw new ArgumentOutOfRangeException(nameof(bitmapWidth));
}
if (bitmapHeight <= 0)
{
throw new ArgumentOutOfRangeException(nameof(bitmapHeight));
}
if (characterRanges == null)
{
throw new ArgumentNullException(nameof(characterRanges));
}
if (!characterRanges.Any())
{
throw new ArgumentException("characterRanges must have a least one value.");
}
byte[] pixels;
var glyphs = new Dictionary<int, GlyphInfo>();
StbTrueType.stbtt_fontinfo fontInfo = new StbTrueType.stbtt_fontinfo();
fixed (byte* ttfPtr = ttf)
{
if (StbTrueType.stbtt_InitFont(fontInfo, ttfPtr, 0) == 0)
{
throw new Exception("Failed to init font.");
}
}
float scaleFactor = StbTrueType.stbtt_ScaleForPixelHeight(fontInfo, fontPixelHeight);
int ascent, descent, lineGap;
StbTrueType.stbtt_GetFontVMetrics(fontInfo, &ascent, &descent, &lineGap);
pixels = new byte[bitmapWidth * bitmapHeight];
StbTrueType.stbtt_pack_context pc = new StbTrueType.stbtt_pack_context();
fixed (byte* ttfPtr = ttf)
fixed (byte* pixelsPtr = pixels)
{
StbTrueType.stbtt_PackBegin(pc, pixelsPtr, bitmapWidth,
bitmapHeight, bitmapWidth, 1, null);
foreach (var range in characterRanges)
{
if (range.Start > range.End)
{
continue;
}
var cd = new StbTrueType.stbtt_packedchar[range.End - range.Start + 1];
for (var i = 0; i < cd.Length; ++i)
{
cd[i] = new StbTrueType.stbtt_packedchar();
}
fixed (StbTrueType.stbtt_packedchar* cdPtr = cd)
{
StbTrueType.stbtt_PackFontRange(pc, ttfPtr, 0, fontPixelHeight,
range.Start,
range.End - range.Start + 1,
cdPtr);
}
for (var i = 0; i < cd.Length; ++i)
{
var yOff = cd[i].yoff;
yOff += ascent * scaleFactor;
var glyphInfo = new GlyphInfo
{
X = cd[i].x0,
Y = cd[i].y0,
Width = cd[i].x1 - cd[i].x0,
Height = cd[i].y1 - cd[i].y0,
XOffset = (int)cd[i].xoff,
YOffset = (int)Math.Round(yOff),
XAdvance = (int)Math.Round(cd[i].xadvance)
};
glyphs[(char)(i + range.Start)] = glyphInfo;
}
}
}
return new TtfFontBakerResult(glyphs, fontPixelHeight, pixels, bitmapWidth, bitmapHeight);
}
}
}