ref: b39576f984276ef7b9d6febbea2a509b2c95d0f2
parent: 432efa25b3476a6884426c0a30f6d6a624310e5d
author: Alexei Podtelezhnikov <apodtele@gmail.com>
date: Fri Sep 27 15:18:49 EDT 2019
* src/base/ftstroke.c (ft_stroker_cap): Speed up caps.
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2019-09-27 Alexei Podtelezhnikov <apodtele@gmail.com>
+
+ * src/base/ftstroke.c (ft_stroker_cap): Speed up caps.
+
2019-09-25 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/base/ftstroke.c (ft_stroker_outside): Speed up clipped miter.
--- a/include/freetype/ftstroke.h
+++ b/include/freetype/ftstroke.h
@@ -297,12 +297,13 @@
* expressed as 16.16 fixed point value.
*
* @note:
- * The radius is expressed in the same units as the outline coordinates.
+ * The `radius` is expressed in the same units as the outline
+ * coordinates.
*
- * The miter limit multiplied by the radius gives the maximum size
+ * The `miter_limit` multiplied by the `radius` gives the maximum size
* of a miter spike, at which it is clipped for
- * `FT_STROKER_LINEJOIN_MITER_VARIABLE` or replaced with a bevel join for
- * `FT_STROKER_LINEJOIN_MITER_FIXED`.
+ * @FT_STROKER_LINEJOIN_MITER_VARIABLE or replaced with a bevel join for
+ * @FT_STROKER_LINEJOIN_MITER_FIXED.
*
* This function calls @FT_Stroker_Rewind automatically.
*/
--- a/src/base/ftstroke.c
+++ b/src/base/ftstroke.c
@@ -923,55 +923,40 @@
error = ft_stroker_arcto( stroker, side );
}
- else if ( stroker->line_cap == FT_STROKER_LINECAP_SQUARE )
+ else
{- /* add a square cap */
- FT_Vector delta, delta2;
- FT_Angle rotate = FT_SIDE_TO_ROTATE( side );
+ /* add a square or butt cap */
+ FT_Vector middle, delta;
FT_Fixed radius = stroker->radius;
FT_StrokeBorder border = stroker->borders + side;
- FT_Vector_From_Polar( &delta2, radius, angle + rotate );
- FT_Vector_From_Polar( &delta, radius, angle );
+ /* compute middle point and first angle point */
+ FT_Vector_From_Polar( &middle, radius, angle );
+ delta.x = side ? middle.y : -middle.y;
+ delta.y = side ? -middle.x : middle.x;
- delta.x += stroker->center.x + delta2.x;
- delta.y += stroker->center.y + delta2.y;
+ if ( stroker->line_cap == FT_STROKER_LINECAP_SQUARE )
+ {+ middle.x += stroker->center.x;
+ middle.y += stroker->center.y;
+ }
+ else /* FT_STROKER_LINECAP_BUTT */
+ {+ middle.x = stroker->center.x;
+ middle.y = stroker->center.y;
+ }
- error = ft_stroke_border_lineto( border, &delta, FALSE );
- if ( error )
- goto Exit;
+ delta.x += middle.x;
+ delta.y += middle.y;
- FT_Vector_From_Polar( &delta2, radius, angle - rotate );
- FT_Vector_From_Polar( &delta, radius, angle );
-
- delta.x += delta2.x + stroker->center.x;
- delta.y += delta2.y + stroker->center.y;
-
error = ft_stroke_border_lineto( border, &delta, FALSE );
- }
- else if ( stroker->line_cap == FT_STROKER_LINECAP_BUTT )
- {- /* add a butt ending */
- FT_Vector delta;
- FT_Angle rotate = FT_SIDE_TO_ROTATE( side );
- FT_Fixed radius = stroker->radius;
- FT_StrokeBorder border = stroker->borders + side;
-
-
- FT_Vector_From_Polar( &delta, radius, angle + rotate );
-
- delta.x += stroker->center.x;
- delta.y += stroker->center.y;
-
- error = ft_stroke_border_lineto( border, &delta, FALSE );
if ( error )
goto Exit;
- FT_Vector_From_Polar( &delta, radius, angle - rotate );
-
- delta.x += stroker->center.x;
- delta.y += stroker->center.y;
+ /* compute second angle point */
+ delta.x = middle.x - delta.x + middle.x;
+ delta.y = middle.y - delta.y + middle.y;
error = ft_stroke_border_lineto( border, &delta, FALSE );
}