public static int stbtt_PackFontRangesGatherRects(stbtt_pack_context spc, stbtt_fontinfo info,
stbtt_pack_range *ranges, int num_ranges, stbrp_rect *rects)
{
var i = 0;
var j = 0;
var k = 0;
var missing_glyph_added = 0;
k = 0;
for (i = 0; i < num_ranges; ++i)
{
var fh = ranges[i].font_size;
var scale = fh > 0 ? stbtt_ScaleForPixelHeight(info, fh) : stbtt_ScaleForMappingEmToPixels(info, -fh);
ranges[i].h_oversample = (byte)spc.h_oversample;
ranges[i].v_oversample = (byte)spc.v_oversample;
for (j = 0; j < ranges[i].num_chars; ++j)
{
var x0 = 0;
var y0 = 0;
var x1 = 0;
var y1 = 0;
var codepoint = ranges[i].array_of_unicode_codepoints == null
? ranges[i].first_unicode_codepoint_in_range + j
: ranges[i].array_of_unicode_codepoints[j];
var glyph = stbtt_FindGlyphIndex(info, codepoint);
if (glyph == 0 && (spc.skip_missing != 0 || missing_glyph_added != 0))
{
rects[k].w = rects[k].h = 0;
}
else
{
stbtt_GetGlyphBitmapBoxSubpixel(info, glyph, scale * spc.h_oversample, scale * spc.v_oversample,
0, 0, &x0, &y0, &x1, &y1);
rects[k].w = (int)(x1 - x0 + spc.padding + spc.h_oversample - 1);
rects[k].h = (int)(y1 - y0 + spc.padding + spc.v_oversample - 1);
if (glyph == 0)
{
missing_glyph_added = 1;
}
}
++k;
}
}
return(k);
}
public static int stbtt_PackFontRanges(stbtt_pack_context spc, byte *fontdata, int font_index,
stbtt_pack_range *ranges, int num_ranges)
{
var info = new stbtt_fontinfo();
var i = 0;
var j = 0;
var n = 0;
var return_value = 1;
stbrp_rect *rects;
for (i = 0; i < num_ranges; ++i)
{
for (j = 0; j < ranges[i].num_chars; ++j)
{
ranges[i].chardata_for_range[j].x0 = ranges[i].chardata_for_range[j].y0 =
ranges[i].chardata_for_range[j].x1 = ranges[i].chardata_for_range[j].y1 = 0;
}
}
n = 0;
for (i = 0; i < num_ranges; ++i)
{
n += ranges[i].num_chars;
}
rects = (stbrp_rect *)CRuntime.malloc((ulong)(sizeof(stbrp_rect) * n));
if (rects == null)
{
return(0);
}
info.userdata = spc.user_allocator_context;
stbtt_InitFont(info, fontdata, stbtt_GetFontOffsetForIndex(fontdata, font_index));
n = stbtt_PackFontRangesGatherRects(spc, info, ranges, num_ranges, rects);
stbtt_PackFontRangesPackRects(spc, rects, n);
return_value = stbtt_PackFontRangesRenderIntoRects(spc, info, ranges, num_ranges, rects);
CRuntime.free(rects);
return(return_value);
}
public static int stbtt_PackFontRanges(stbtt_pack_context spc, byte *fontdata, int font_index, stbtt_pack_range *ranges, int num_ranges)
{
stbtt_fontinfo info = new stbtt_fontinfo();
int i = 0;
int j = 0;
int n = 0;
int return_value = (int)(1);
stbrp_rect * rects;
for (i = (int)(0); (i) < (num_ranges); ++i)
{
for (j = (int)(0); (j) < (ranges[i].num_chars); ++j)
{
ranges[i].chardata_for_range[j].x0 = (ushort)(ranges[i].chardata_for_range[j].y0 = (ushort)(ranges[i].chardata_for_range[j].x1 = (ushort)(ranges[i].chardata_for_range[j].y1 = (ushort)(0))));
}
}
n = (int)(0);
for (i = (int)(0); (i) < (num_ranges); ++i)
{
n += (int)(ranges[i].num_chars);
}
rects = (stbrp_rect *)(CRuntime.malloc((ulong)(sizeof(stbrp_rect) * n)));
if ((rects) == (null))
{
return((int)(0));
}
info.userdata = spc.user_allocator_context;
stbtt_InitFont(info, fontdata, (int)(stbtt_GetFontOffsetForIndex(fontdata, (int)(font_index))));
n = (int)(stbtt_PackFontRangesGatherRects(spc, info, ranges, (int)(num_ranges), rects));
stbtt_PackFontRangesPackRects(spc, rects, (int)(n));
return_value = (int)(stbtt_PackFontRangesRenderIntoRects(spc, info, ranges, (int)(num_ranges), rects));
CRuntime.free(rects);
return((int)(return_value));
}
public static int stbtt_PackFontRangesRenderIntoRects(stbtt_pack_context spc, stbtt_fontinfo info, stbtt_pack_range *ranges, int num_ranges, stbrp_rect *rects)
{
int i = 0;
int j = 0;
int k = 0;
int missing_glyph = (int)(-1);
int return_value = (int)(1);
int old_h_over = (int)(spc.h_oversample);
int old_v_over = (int)(spc.v_oversample);
k = (int)(0);
for (i = (int)(0); (i) < (num_ranges); ++i)
{
float fh = (float)(ranges[i].font_size);
float scale = (float)((fh) > (0) ? stbtt_ScaleForPixelHeight(info, (float)(fh)) : stbtt_ScaleForMappingEmToPixels(info, (float)(-fh)));
float recip_h = 0;
float recip_v = 0;
float sub_x = 0;
float sub_y = 0;
spc.h_oversample = (uint)(ranges[i].h_oversample);
spc.v_oversample = (uint)(ranges[i].v_oversample);
recip_h = (float)(1.0f / spc.h_oversample);
recip_v = (float)(1.0f / spc.v_oversample);
sub_x = (float)(stbtt__oversample_shift((int)(spc.h_oversample)));
sub_y = (float)(stbtt__oversample_shift((int)(spc.v_oversample)));
for (j = (int)(0); (j) < (ranges[i].num_chars); ++j)
{
stbrp_rect *r = &rects[k];
if ((((r->was_packed) != 0) && (r->w != 0)) && (r->h != 0))
{
stbtt_packedchar *bc = &ranges[i].chardata_for_range[j];
int advance = 0;
int lsb = 0;
int x0 = 0;
int y0 = 0;
int x1 = 0;
int y1 = 0;
int codepoint = (int)((ranges[i].array_of_unicode_codepoints) == (null) ? ranges[i].first_unicode_codepoint_in_range + j : ranges[i].array_of_unicode_codepoints[j]);
int glyph = (int)(stbtt_FindGlyphIndex(info, (int)(codepoint)));
int pad = (int)(spc.padding);
r->x += (int)(pad);
r->y += (int)(pad);
r->w -= (int)(pad);
r->h -= (int)(pad);
stbtt_GetGlyphHMetrics(info, (int)(glyph), &advance, &lsb);
stbtt_GetGlyphBitmapBox(info, (int)(glyph), (float)(scale * spc.h_oversample), (float)(scale * spc.v_oversample), &x0, &y0, &x1, &y1);
stbtt_MakeGlyphBitmapSubpixel(info, spc.pixels + r->x + r->y * spc.stride_in_bytes, (int)(r->w - spc.h_oversample + 1), (int)(r->h - spc.v_oversample + 1), (int)(spc.stride_in_bytes), (float)(scale * spc.h_oversample), (float)(scale * spc.v_oversample), (float)(0), (float)(0), (int)(glyph));
if ((spc.h_oversample) > (1))
{
stbtt__h_prefilter(spc.pixels + r->x + r->y * spc.stride_in_bytes, (int)(r->w), (int)(r->h), (int)(spc.stride_in_bytes), (uint)(spc.h_oversample));
}
if ((spc.v_oversample) > (1))
{
stbtt__v_prefilter(spc.pixels + r->x + r->y * spc.stride_in_bytes, (int)(r->w), (int)(r->h), (int)(spc.stride_in_bytes), (uint)(spc.v_oversample));
}
bc->x0 = (ushort)((short)(r->x));
bc->y0 = (ushort)((short)(r->y));
bc->x1 = (ushort)((short)(r->x + r->w));
bc->y1 = (ushort)((short)(r->y + r->h));
bc->xadvance = (float)(scale * advance);
bc->xoff = (float)((float)(x0) * recip_h + sub_x);
bc->yoff = (float)((float)(y0) * recip_v + sub_y);
bc->xoff2 = (float)((x0 + r->w) * recip_h + sub_x);
bc->yoff2 = (float)((y0 + r->h) * recip_v + sub_y);
if ((glyph) == (0))
{
missing_glyph = (int)(j);
}
}
else if ((spc.skip_missing) != 0)
{
return_value = (int)(0);
}
else if (((((r->was_packed) != 0) && ((r->w) == (0))) && ((r->h) == (0))) && ((missing_glyph) >= (0)))
{
ranges[i].chardata_for_range[j] = (stbtt_packedchar)(ranges[i].chardata_for_range[missing_glyph]);
}
else
{
return_value = (int)(0);
}
++k;
}
}
spc.h_oversample = (uint)(old_h_over);
spc.v_oversample = (uint)(old_v_over);
return((int)(return_value));
}
public static int stbtt_PackFontRangesGatherRects(stbtt_pack_context spc, stbtt_fontinfo info, stbtt_pack_range *ranges, int num_ranges, stbrp_rect *rects)
{
int i = 0;
int j = 0;
int k = 0;
int missing_glyph_added = (int)(0);
k = (int)(0);
for (i = (int)(0); (i) < (num_ranges); ++i)
{
float fh = (float)(ranges[i].font_size);
float scale = (float)((fh) > (0) ? stbtt_ScaleForPixelHeight(info, (float)(fh)) : stbtt_ScaleForMappingEmToPixels(info, (float)(-fh)));
ranges[i].h_oversample = ((byte)(spc.h_oversample));
ranges[i].v_oversample = ((byte)(spc.v_oversample));
for (j = (int)(0); (j) < (ranges[i].num_chars); ++j)
{
int x0 = 0;
int y0 = 0;
int x1 = 0;
int y1 = 0;
int codepoint = (int)((ranges[i].array_of_unicode_codepoints) == (null) ? ranges[i].first_unicode_codepoint_in_range + j : ranges[i].array_of_unicode_codepoints[j]);
int glyph = (int)(stbtt_FindGlyphIndex(info, (int)(codepoint)));
if (((glyph) == (0)) && (((spc.skip_missing) != 0) || ((missing_glyph_added) != 0)))
{
rects[k].w = (int)(rects[k].h = (int)(0));
}
else
{
stbtt_GetGlyphBitmapBoxSubpixel(info, (int)(glyph), (float)(scale * spc.h_oversample), (float)(scale * spc.v_oversample), (float)(0), (float)(0), &x0, &y0, &x1, &y1);
rects[k].w = ((int)(x1 - x0 + spc.padding + spc.h_oversample - 1));
rects[k].h = ((int)(y1 - y0 + spc.padding + spc.v_oversample - 1));
if ((glyph) == (0))
{
missing_glyph_added = (int)(1);
}
}
++k;
}
}
return((int)(k));
}
public static int stbtt_PackFontRangesRenderIntoRects(stbtt_pack_context spc, stbtt_fontinfo info,
stbtt_pack_range *ranges, int num_ranges, stbrp_rect *rects)
{
var i = 0;
var j = 0;
var k = 0;
var missing_glyph = -1;
var return_value = 1;
var old_h_over = (int)spc.h_oversample;
var old_v_over = (int)spc.v_oversample;
k = 0;
for (i = 0; i < num_ranges; ++i)
{
var fh = ranges[i].font_size;
var scale = fh > 0 ? stbtt_ScaleForPixelHeight(info, fh) : stbtt_ScaleForMappingEmToPixels(info, -fh);
float recip_h = 0;
float recip_v = 0;
float sub_x = 0;
float sub_y = 0;
spc.h_oversample = ranges[i].h_oversample;
spc.v_oversample = ranges[i].v_oversample;
recip_h = 1.0f / spc.h_oversample;
recip_v = 1.0f / spc.v_oversample;
sub_x = stbtt__oversample_shift((int)spc.h_oversample);
sub_y = stbtt__oversample_shift((int)spc.v_oversample);
for (j = 0; j < ranges[i].num_chars; ++j)
{
var r = &rects[k];
if (r->was_packed != 0 && r->w != 0 && r->h != 0)
{
var bc = &ranges[i].chardata_for_range[j];
var advance = 0;
var lsb = 0;
var x0 = 0;
var y0 = 0;
var x1 = 0;
var y1 = 0;
var codepoint = ranges[i].array_of_unicode_codepoints == null
? ranges[i].first_unicode_codepoint_in_range + j
: ranges[i].array_of_unicode_codepoints[j];
var glyph = stbtt_FindGlyphIndex(info, codepoint);
var pad = spc.padding;
r->x += pad;
r->y += pad;
r->w -= pad;
r->h -= pad;
stbtt_GetGlyphHMetrics(info, glyph, &advance, &lsb);
stbtt_GetGlyphBitmapBox(info, glyph, scale * spc.h_oversample, scale * spc.v_oversample, &x0,
&y0, &x1, &y1);
stbtt_MakeGlyphBitmapSubpixel(info, spc.pixels + r->x + r->y * spc.stride_in_bytes,
(int)(r->w - spc.h_oversample + 1), (int)(r->h - spc.v_oversample + 1),
spc.stride_in_bytes, scale * spc.h_oversample, scale * spc.v_oversample, 0, 0, glyph);
if (spc.h_oversample > 1)
{
stbtt__h_prefilter(spc.pixels + r->x + r->y * spc.stride_in_bytes, r->w, r->h,
spc.stride_in_bytes, spc.h_oversample);
}
if (spc.v_oversample > 1)
{
stbtt__v_prefilter(spc.pixels + r->x + r->y * spc.stride_in_bytes, r->w, r->h,
spc.stride_in_bytes, spc.v_oversample);
}
bc->x0 = (ushort)(short)r->x;
bc->y0 = (ushort)(short)r->y;
bc->x1 = (ushort)(short)(r->x + r->w);
bc->y1 = (ushort)(short)(r->y + r->h);
bc->xadvance = scale * advance;
bc->xoff = x0 * recip_h + sub_x;
bc->yoff = y0 * recip_v + sub_y;
bc->xoff2 = (x0 + r->w) * recip_h + sub_x;
bc->yoff2 = (y0 + r->h) * recip_v + sub_y;
if (glyph == 0)
{
missing_glyph = j;
}
}
else if (spc.skip_missing != 0)
{
return_value = 0;
}
else if (r->was_packed != 0 && r->w == 0 && r->h == 0 && missing_glyph >= 0)
{
ranges[i].chardata_for_range[j] = ranges[i].chardata_for_range[missing_glyph];
}
else
{
return_value = 0;
}
++k;
}
}
spc.h_oversample = (uint)old_h_over;
spc.v_oversample = (uint)old_v_over;
return(return_value);
}
