freetype readpoint

>||
FT_LOCAL_DEF( FT_Error )
TT_Vary_Get_Glyph_Deltas( TT_Face face,
FT_UInt glyph_index,
FT_Vector* *deltas,
FT_UInt n_points )
{
FT_Stream stream = face->root.stream;
FT_Memory memory = stream->memory;
GX_Blend blend = face->blend;
FT_Vector* delta_xy = NULL;

FT_Error error;
FT_ULong glyph_start;
FT_UInt tupleCount;
FT_ULong offsetToData;
FT_ULong here;
FT_UInt i, j;
FT_Fixed* tuple_coords = NULL;
FT_Fixed* im_start_coords = NULL;
FT_Fixed* im_end_coords = NULL;
FT_UInt point_count, spoint_count = 0;
FT_UShort* sharedpoints = NULL;
FT_UShort* localpoints = NULL;
FT_UShort* points;
FT_Short *deltas_x, *deltas_y;

if ( !face->doblend || blend == NULL )
return FT_THROW( Invalid_Argument );

/* to be freed by the caller */
if ( FT_NEW_ARRAY( delta_xy, n_points ) )
goto Exit;
*deltas = delta_xy;

if ( glyph_index >= blend->gv_glyphcnt ||
blend->glyphoffsets[glyph_index] ==
blend->glyphoffsets[glyph_index + 1] )
return FT_Err_Ok; /* no variation data for this glyph */

if ( FT_STREAM_SEEK( blend->glyphoffsets[glyph_index] ) ||
FT_FRAME_ENTER( blend->glyphoffsets[glyph_index + 1] -
blend->glyphoffsets[glyph_index] ) )
goto Fail1;

glyph_start = FT_Stream_FTell( stream );

/* each set of glyph variation data is formatted similarly to `cvar' */
/* (except we get shared points and global tuples) */

if ( FT_NEW_ARRAY( tuple_coords, blend->num_axis ) ||
FT_NEW_ARRAY( im_start_coords, blend->num_axis ) ||
FT_NEW_ARRAY( im_end_coords, blend->num_axis ) )
goto Fail2;

tupleCount = FT_GET_USHORT();
offsetToData = glyph_start + FT_GET_USHORT();

if ( tupleCount & GX_TC_TUPLES_SHARE_POINT_NUMBERS )
{
here = FT_Stream_FTell( stream );

FT_Stream_SeekSet( stream, offsetToData );

sharedpoints = ft_var_readpackedpoints( stream, &spoint_count ); <====points
offsetToData = FT_Stream_FTell( stream );

FT_Stream_SeekSet( stream, here );
}
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