public static void stbtt_GetPackedQuad(stbtt_packedchar *chardata, int pw, int ph, int char_index, float *xpos,
float *ypos, stbtt_aligned_quad *q, int align_to_integer)
{
var ipw = 1.0f / pw;
var iph = 1.0f / ph;
var b = chardata + char_index;
if (align_to_integer != 0)
{
float x = (int)CRuntime.floor(*xpos + b->xoff + 0.5f);
float y = (int)CRuntime.floor(*ypos + b->yoff + 0.5f);
q->x0 = x;
q->y0 = y;
q->x1 = x + b->xoff2 - b->xoff;
q->y1 = y + b->yoff2 - b->yoff;
}
else
{
q->x0 = *xpos + b->xoff;
q->y0 = *ypos + b->yoff;
q->x1 = *xpos + b->xoff2;
q->y1 = *ypos + b->yoff2;
}
q->s0 = b->x0 * ipw;
q->t0 = b->y0 * iph;
q->s1 = b->x1 * ipw;
q->t1 = b->y1 * iph;
*xpos += b->xadvance;
}
public static void stbtt_GetPackedQuad(stbtt_packedchar *chardata, int pw, int ph, int char_index, float *xpos, float *ypos, stbtt_aligned_quad *q, int align_to_integer)
{
float ipw = (float)(1.0f / pw);
float iph = (float)(1.0f / ph);
stbtt_packedchar *b = chardata + char_index;
if ((align_to_integer) != 0)
{
float x = (float)((int)(CRuntime.floor((double)((*xpos + b->xoff) + 0.5f))));
float y = (float)((int)(CRuntime.floor((double)((*ypos + b->yoff) + 0.5f))));
q->x0 = (float)(x);
q->y0 = (float)(y);
q->x1 = (float)(x + b->xoff2 - b->xoff);
q->y1 = (float)(y + b->yoff2 - b->yoff);
}
else
{
q->x0 = (float)(*xpos + b->xoff);
q->y0 = (float)(*ypos + b->yoff);
q->x1 = (float)(*xpos + b->xoff2);
q->y1 = (float)(*ypos + b->yoff2);
}
q->s0 = (float)(b->x0 * ipw);
q->t0 = (float)(b->y0 * iph);
q->s1 = (float)(b->x1 * ipw);
q->t1 = (float)(b->y1 * iph);
*xpos += (float)(b->xadvance);
}
public static int stbtt_PackFontRange(stbtt_pack_context spc, byte *fontdata, int font_index, float font_size, int first_unicode_codepoint_in_range, int num_chars_in_range, stbtt_packedchar *chardata_for_range)
{
stbtt_pack_range range = new stbtt_pack_range();
range.first_unicode_codepoint_in_range = (int)(first_unicode_codepoint_in_range);
range.array_of_unicode_codepoints = (null);
range.num_chars = (int)(num_chars_in_range);
range.chardata_for_range = chardata_for_range;
range.font_size = (float)(font_size);
return((int)(stbtt_PackFontRanges(spc, fontdata, (int)(font_index), &range, (int)(1))));
}
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_PackFontRange(stbtt_pack_context spc, byte *fontdata, int font_index, float font_size,
int first_unicode_codepoint_in_range, int num_chars_in_range, stbtt_packedchar *chardata_for_range)
{
var range = new stbtt_pack_range();
range.first_unicode_codepoint_in_range = first_unicode_codepoint_in_range;
range.array_of_unicode_codepoints = null;
range.num_chars = num_chars_in_range;
range.chardata_for_range = chardata_for_range;
range.font_size = font_size;
return(stbtt_PackFontRanges(spc, fontdata, font_index, &range, 1));
}
