forked from minhngoc25a/freetype2
[truetype] Clean up phantom point accounting.
This formalizes that the phantom points appended in the outline do not increase its point count, nor are they tagged or included in any additional contours. Only their coordinates are stored. They are counted in the glyph zone, however. * src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Infer `n_points` from the outline size plus four phantom points. * src/truetype/ttgxvar.h (TT_Vary_Apply_Glyph_Deltas): Remove this argument. * src/truetype/ttgload.c (tt_prepare_zone): Add phantom four. (TT_Process_Simple_Glyph, load_truetype_glyph): Update all callers.
This commit is contained in:
Alexei Podtelezhnikov
parent
705f416184
commit
47103b2f19
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@ -801,7 +801,7 @@
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FT_UInt start_point,
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FT_UInt start_contour )
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{
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zone->n_points = (FT_UShort)load->outline.n_points -
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zone->n_points = (FT_UShort)load->outline.n_points + 4 -
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(FT_UShort)start_point;
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zone->n_contours = load->outline.n_contours -
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(FT_Short)start_contour;
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@ -970,11 +970,6 @@
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outline->points[n_points + 2] = loader->pp3;
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outline->points[n_points + 3] = loader->pp4;
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outline->tags[n_points ] = 0;
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outline->tags[n_points + 1] = 0;
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outline->tags[n_points + 2] = 0;
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outline->tags[n_points + 3] = 0;
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n_points += 4;
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#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
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@ -987,8 +982,7 @@
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/* Deltas apply to the unscaled data. */
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error = TT_Vary_Apply_Glyph_Deltas( loader,
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outline,
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unrounded,
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(FT_UInt)n_points );
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unrounded );
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if ( error )
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goto Exit;
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}
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@ -1000,7 +994,7 @@
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tt_prepare_zone( &loader->zone, &gloader->current, 0, 0 );
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FT_ARRAY_COPY( loader->zone.orus, loader->zone.cur,
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loader->zone.n_points + 4 );
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loader->zone.n_points );
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}
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{
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@ -1142,11 +1136,7 @@
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}
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if ( IS_HINTED( loader->load_flags ) )
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{
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loader->zone.n_points += 4;
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error = TT_Hint_Glyph( loader, 0 );
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}
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#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
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Exit:
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@ -1359,11 +1349,6 @@
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outline->points[outline->n_points + 2] = loader->pp3;
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outline->points[outline->n_points + 3] = loader->pp4;
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outline->tags[outline->n_points ] = 0;
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outline->tags[outline->n_points + 1] = 0;
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outline->tags[outline->n_points + 2] = 0;
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outline->tags[outline->n_points + 3] = 0;
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#ifdef TT_USE_BYTECODE_INTERPRETER
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{
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@ -1422,11 +1407,9 @@
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/* Some points are likely touched during execution of */
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/* instructions on components. So let's untouch them. */
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for ( i = 0; i < loader->zone.n_points; i++ )
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for ( i = 0; i < loader->zone.n_points - 4; i++ )
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loader->zone.tags[i] &= ~FT_CURVE_TAG_TOUCH_BOTH;
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loader->zone.n_points += 4;
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return TT_Hint_Glyph( loader, 1 );
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}
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@ -1747,35 +1730,27 @@
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/* a small outline structure with four elements for */
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/* communication with `TT_Vary_Apply_Glyph_Deltas' */
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FT_Vector points[4];
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char tags[4] = { 1, 1, 1, 1 };
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short contours[4] = { 0, 1, 2, 3 };
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FT_Outline outline;
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/* unrounded values */
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FT_Vector unrounded[4] = { {0, 0}, {0, 0}, {0, 0}, {0, 0} };
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points[0].x = loader->pp1.x;
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points[0].y = loader->pp1.y;
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points[1].x = loader->pp2.x;
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points[1].y = loader->pp2.y;
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points[0] = loader->pp1;
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points[1] = loader->pp2;
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points[2] = loader->pp3;
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points[3] = loader->pp4;
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points[2].x = loader->pp3.x;
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points[2].y = loader->pp3.y;
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points[3].x = loader->pp4.x;
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points[3].y = loader->pp4.y;
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outline.n_points = 4;
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outline.n_contours = 4;
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outline.n_points = 0;
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outline.n_contours = 0;
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outline.points = points;
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outline.tags = tags;
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outline.contours = contours;
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outline.tags = NULL;
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outline.contours = NULL;
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/* this must be done before scaling */
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error = TT_Vary_Apply_Glyph_Deltas( loader,
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&outline,
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unrounded,
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(FT_UInt)outline.n_points );
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unrounded );
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if ( error )
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goto Exit;
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}
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@ -1925,17 +1900,16 @@
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/* construct an outline structure for */
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/* communication with `TT_Vary_Apply_Glyph_Deltas' */
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outline.n_points = (short)( gloader->current.num_subglyphs + 4 );
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outline.n_contours = outline.n_points;
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outline.n_contours = outline.n_points = limit;
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outline.points = NULL;
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outline.tags = NULL;
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outline.contours = NULL;
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if ( FT_NEW_ARRAY( points, outline.n_points ) ||
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FT_NEW_ARRAY( tags, outline.n_points ) ||
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FT_NEW_ARRAY( contours, outline.n_points ) ||
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FT_NEW_ARRAY( unrounded, outline.n_points ) )
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if ( FT_NEW_ARRAY( points, limit + 4 ) ||
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FT_NEW_ARRAY( tags, limit + 4 ) ||
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FT_NEW_ARRAY( contours, limit + 4 ) ||
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FT_NEW_ARRAY( unrounded, limit + 4 ) )
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goto Exit1;
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subglyph = gloader->current.subglyphs;
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@ -1951,28 +1925,10 @@
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contours[i] = i;
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}
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points[i].x = loader->pp1.x;
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points[i].y = loader->pp1.y;
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tags[i] = 1;
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contours[i] = i;
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i++;
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points[i].x = loader->pp2.x;
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points[i].y = loader->pp2.y;
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tags[i] = 1;
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contours[i] = i;
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i++;
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points[i].x = loader->pp3.x;
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points[i].y = loader->pp3.y;
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tags[i] = 1;
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contours[i] = i;
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i++;
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points[i].x = loader->pp4.x;
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points[i].y = loader->pp4.y;
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tags[i] = 1;
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contours[i] = i;
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points[i++] = loader->pp1;
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points[i++] = loader->pp2;
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points[i++] = loader->pp3;
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points[i ] = loader->pp4;
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outline.points = points;
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outline.tags = tags;
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@ -1980,11 +1936,9 @@
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/* this call provides additional offsets */
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/* for each component's translation */
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if ( FT_SET_ERROR( TT_Vary_Apply_Glyph_Deltas(
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loader,
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&outline,
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unrounded,
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(FT_UInt)outline.n_points ) ) )
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if ( FT_SET_ERROR( TT_Vary_Apply_Glyph_Deltas( loader,
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&outline,
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unrounded ) ) )
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goto Exit1;
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subglyph = gloader->current.subglyphs;
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@ -3839,25 +3839,20 @@
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* An array with `n_points' elements that is filled with unrounded
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* point coordinates (in 26.6 format).
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*
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* @Input
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* n_points ::
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* The number of the points in the glyph, including
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* phantom points.
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*
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* @Return:
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* FreeType error code. 0 means success.
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*/
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FT_LOCAL_DEF( FT_Error )
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TT_Vary_Apply_Glyph_Deltas( TT_Loader loader,
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FT_Outline* outline,
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FT_Vector* unrounded,
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FT_UInt n_points )
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FT_Vector* unrounded )
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{
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FT_Error error;
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TT_Face face = loader->face;
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FT_Stream stream = face->root.stream;
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FT_Memory memory = stream->memory;
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FT_UInt glyph_index = loader->glyph_index;
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FT_UInt n_points = (FT_UInt)outline->n_points + 4;
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FT_Vector* points_org = NULL; /* coordinates in 16.16 format */
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FT_Vector* points_out = NULL; /* coordinates in 16.16 format */
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@ -363,8 +363,7 @@ FT_BEGIN_HEADER
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FT_LOCAL( FT_Error )
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TT_Vary_Apply_Glyph_Deltas( TT_Loader loader,
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FT_Outline* outline,
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FT_Vector* unrounded,
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FT_UInt n_points );
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FT_Vector* unrounded );
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FT_LOCAL( FT_Error )
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tt_hadvance_adjust( TT_Face face,
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