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diff --git a/core/src/fxge/fx_freetype/fxft2.5.01/src/base/ftbbox.c b/core/src/fxge/fx_freetype/fxft2.5.01/src/base/ftbbox.c
deleted file mode 100644
index a5862c5b91..0000000000
--- a/core/src/fxge/fx_freetype/fxft2.5.01/src/base/ftbbox.c
+++ /dev/null
@@ -1,649 +0,0 @@
-/***************************************************************************/
-/* */
-/* ftbbox.c */
-/* */
-/* FreeType bbox computation (body). */
-/* */
-/* Copyright 1996-2002, 2004, 2006, 2010, 2013 by */
-/* David Turner, Robert Wilhelm, and Werner Lemberg. */
-/* */
-/* This file is part of the FreeType project, and may only be used */
-/* modified and distributed under the terms of the FreeType project */
-/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
-/* this file you indicate that you have read the license and */
-/* understand and accept it fully. */
-/* */
-/***************************************************************************/
-
-
- /*************************************************************************/
- /* */
- /* This component has a _single_ role: to compute exact outline bounding */
- /* boxes. */
- /* */
- /*************************************************************************/
-
-
-#include "../../include/ft2build.h"
-#include "../../include/freetype/internal/ftdebug.h"
-
-#include "../../include/freetype/ftbbox.h"
-#include "../../include/freetype/ftimage.h"
-#include "../../include/freetype/ftoutln.h"
-#include "../../include/freetype/internal/ftcalc.h"
-#include "../../include/freetype/internal/ftobjs.h"
-
-
- typedef struct TBBox_Rec_
- {
- FT_Vector last;
- FT_BBox bbox;
-
- } TBBox_Rec;
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* BBox_Move_To */
- /* */
- /* <Description> */
- /* This function is used as a `move_to' and `line_to' emitter during */
- /* FT_Outline_Decompose(). It simply records the destination point */
- /* in `user->last'; no further computations are necessary since we */
- /* use the cbox as the starting bbox which must be refined. */
- /* */
- /* <Input> */
- /* to :: A pointer to the destination vector. */
- /* */
- /* <InOut> */
- /* user :: A pointer to the current walk context. */
- /* */
- /* <Return> */
- /* Always 0. Needed for the interface only. */
- /* */
- static int
- BBox_Move_To( FT_Vector* to,
- TBBox_Rec* user )
- {
- user->last = *to;
-
- return 0;
- }
-
-
-#define CHECK_X( p, bbox ) \
- ( p->x < bbox.xMin || p->x > bbox.xMax )
-
-#define CHECK_Y( p, bbox ) \
- ( p->y < bbox.yMin || p->y > bbox.yMax )
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* BBox_Conic_Check */
- /* */
- /* <Description> */
- /* Finds the extrema of a 1-dimensional conic Bezier curve and update */
- /* a bounding range. This version uses direct computation, as it */
- /* doesn't need square roots. */
- /* */
- /* <Input> */
- /* y1 :: The start coordinate. */
- /* */
- /* y2 :: The coordinate of the control point. */
- /* */
- /* y3 :: The end coordinate. */
- /* */
- /* <InOut> */
- /* min :: The address of the current minimum. */
- /* */
- /* max :: The address of the current maximum. */
- /* */
- static void
- BBox_Conic_Check( FT_Pos y1,
- FT_Pos y2,
- FT_Pos y3,
- FT_Pos* min,
- FT_Pos* max )
- {
- if ( y1 <= y3 && y2 == y1 ) /* flat arc */
- goto Suite;
-
- if ( y1 < y3 )
- {
- if ( y2 >= y1 && y2 <= y3 ) /* ascending arc */
- goto Suite;
- }
- else
- {
- if ( y2 >= y3 && y2 <= y1 ) /* descending arc */
- {
- y2 = y1;
- y1 = y3;
- y3 = y2;
- goto Suite;
- }
- }
-
- y1 = y3 = y1 - FT_MulDiv( y2 - y1, y2 - y1, y1 - 2*y2 + y3 );
-
- Suite:
- if ( y1 < *min ) *min = y1;
- if ( y3 > *max ) *max = y3;
- }
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* BBox_Conic_To */
- /* */
- /* <Description> */
- /* This function is used as a `conic_to' emitter during */
- /* FT_Outline_Decompose(). It checks a conic Bezier curve with the */
- /* current bounding box, and computes its extrema if necessary to */
- /* update it. */
- /* */
- /* <Input> */
- /* control :: A pointer to a control point. */
- /* */
- /* to :: A pointer to the destination vector. */
- /* */
- /* <InOut> */
- /* user :: The address of the current walk context. */
- /* */
- /* <Return> */
- /* Always 0. Needed for the interface only. */
- /* */
- /* <Note> */
- /* In the case of a non-monotonous arc, we compute directly the */
- /* extremum coordinates, as it is sufficiently fast. */
- /* */
- static int
- BBox_Conic_To( FT_Vector* control,
- FT_Vector* to,
- TBBox_Rec* user )
- {
- /* we don't need to check `to' since it is always an `on' point, thus */
- /* within the bbox */
-
- if ( CHECK_X( control, user->bbox ) )
- BBox_Conic_Check( user->last.x,
- control->x,
- to->x,
- &user->bbox.xMin,
- &user->bbox.xMax );
-
- if ( CHECK_Y( control, user->bbox ) )
- BBox_Conic_Check( user->last.y,
- control->y,
- to->y,
- &user->bbox.yMin,
- &user->bbox.yMax );
-
- user->last = *to;
-
- return 0;
- }
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* BBox_Cubic_Check */
- /* */
- /* <Description> */
- /* Finds the extrema of a 1-dimensional cubic Bezier curve and */
- /* updates a bounding range. This version uses splitting because we */
- /* don't want to use square roots and extra accuracy. */
- /* */
- /* <Input> */
- /* p1 :: The start coordinate. */
- /* */
- /* p2 :: The coordinate of the first control point. */
- /* */
- /* p3 :: The coordinate of the second control point. */
- /* */
- /* p4 :: The end coordinate. */
- /* */
- /* <InOut> */
- /* min :: The address of the current minimum. */
- /* */
- /* max :: The address of the current maximum. */
- /* */
-
-#if 0
-
- static void
- BBox_Cubic_Check( FT_Pos p1,
- FT_Pos p2,
- FT_Pos p3,
- FT_Pos p4,
- FT_Pos* min,
- FT_Pos* max )
- {
- FT_Pos q1, q2, q3, q4;
-
-
- q1 = p1;
- q2 = p2;
- q3 = p3;
- q4 = p4;
-
- /* for a conic segment to possibly reach new maximum */
- /* one of its off-points must be above the current value */
- while ( q2 > *max || q3 > *max )
- {
- /* determine which half contains the maximum and split */
- if ( q1 + q2 > q3 + q4 ) /* first half */
- {
- q4 = q4 + q3;
- q3 = q3 + q2;
- q2 = q2 + q1;
- q4 = q4 + q3;
- q3 = q3 + q2;
- q4 = ( q4 + q3 ) / 8;
- q3 = q3 / 4;
- q2 = q2 / 2;
- }
- else /* second half */
- {
- q1 = q1 + q2;
- q2 = q2 + q3;
- q3 = q3 + q4;
- q1 = q1 + q2;
- q2 = q2 + q3;
- q1 = ( q1 + q2 ) / 8;
- q2 = q2 / 4;
- q3 = q3 / 2;
- }
-
- /* check if either end reached the maximum */
- if ( q1 == q2 && q1 >= q3 )
- {
- *max = q1;
- break;
- }
- if ( q3 == q4 && q2 <= q4 )
- {
- *max = q4;
- break;
- }
- }
-
- q1 = p1;
- q2 = p2;
- q3 = p3;
- q4 = p4;
-
- /* for a conic segment to possibly reach new minimum */
- /* one of its off-points must be below the current value */
- while ( q2 < *min || q3 < *min )
- {
- /* determine which half contains the minimum and split */
- if ( q1 + q2 < q3 + q4 ) /* first half */
- {
- q4 = q4 + q3;
- q3 = q3 + q2;
- q2 = q2 + q1;
- q4 = q4 + q3;
- q3 = q3 + q2;
- q4 = ( q4 + q3 ) / 8;
- q3 = q3 / 4;
- q2 = q2 / 2;
- }
- else /* second half */
- {
- q1 = q1 + q2;
- q2 = q2 + q3;
- q3 = q3 + q4;
- q1 = q1 + q2;
- q2 = q2 + q3;
- q1 = ( q1 + q2 ) / 8;
- q2 = q2 / 4;
- q3 = q3 / 2;
- }
-
- /* check if either end reached the minimum */
- if ( q1 == q2 && q1 <= q3 )
- {
- *min = q1;
- break;
- }
- if ( q3 == q4 && q2 >= q4 )
- {
- *min = q4;
- break;
- }
- }
- }
-
-#else
-
- static void
- test_cubic_extrema( FT_Pos y1,
- FT_Pos y2,
- FT_Pos y3,
- FT_Pos y4,
- FT_Fixed u,
- FT_Pos* min,
- FT_Pos* max )
- {
- /* FT_Pos a = y4 - 3*y3 + 3*y2 - y1; */
- FT_Pos b = y3 - 2*y2 + y1;
- FT_Pos c = y2 - y1;
- FT_Pos d = y1;
- FT_Pos y;
- FT_Fixed uu;
-
- FT_UNUSED ( y4 );
-
-
- /* The polynomial is */
- /* */
- /* P(x) = a*x^3 + 3b*x^2 + 3c*x + d , */
- /* */
- /* dP/dx = 3a*x^2 + 6b*x + 3c . */
- /* */
- /* However, we also have */
- /* */
- /* dP/dx(u) = 0 , */
- /* */
- /* which implies by subtraction that */
- /* */
- /* P(u) = b*u^2 + 2c*u + d . */
-
- if ( u > 0 && u < 0x10000L )
- {
- uu = FT_MulFix( u, u );
- y = d + FT_MulFix( c, 2*u ) + FT_MulFix( b, uu );
-
- if ( y < *min ) *min = y;
- if ( y > *max ) *max = y;
- }
- }
-
-
- static void
- BBox_Cubic_Check( FT_Pos y1,
- FT_Pos y2,
- FT_Pos y3,
- FT_Pos y4,
- FT_Pos* min,
- FT_Pos* max )
- {
- /* always compare first and last points */
- if ( y1 < *min ) *min = y1;
- else if ( y1 > *max ) *max = y1;
-
- if ( y4 < *min ) *min = y4;
- else if ( y4 > *max ) *max = y4;
-
- /* now, try to see if there are split points here */
- if ( y1 <= y4 )
- {
- /* flat or ascending arc test */
- if ( y1 <= y2 && y2 <= y4 && y1 <= y3 && y3 <= y4 )
- return;
- }
- else /* y1 > y4 */
- {
- /* descending arc test */
- if ( y1 >= y2 && y2 >= y4 && y1 >= y3 && y3 >= y4 )
- return;
- }
-
- /* There are some split points. Find them. */
- /* We already made sure that a, b, and c below cannot be all zero. */
- {
- FT_Pos a = y4 - 3*y3 + 3*y2 - y1;
- FT_Pos b = y3 - 2*y2 + y1;
- FT_Pos c = y2 - y1;
- FT_Pos d;
- FT_Fixed t;
- FT_Int shift;
-
-
- /* We need to solve `ax^2+2bx+c' here, without floating points! */
- /* The trick is to normalize to a different representation in order */
- /* to use our 16.16 fixed-point routines. */
- /* */
- /* We compute FT_MulFix(b,b) and FT_MulFix(a,c) after normalization. */
- /* These values must fit into a single 16.16 value. */
- /* */
- /* We normalize a, b, and c to `8.16' fixed-point values to ensure */
- /* that their product is held in a `16.16' value including the sign. */
- /* Necessarily, we need to shift `a', `b', and `c' so that the most */
- /* significant bit of their absolute values is at position 22. */
- /* */
- /* This also means that we are using 23 bits of precision to compute */
- /* the zeros, independently of the range of the original polynomial */
- /* coefficients. */
- /* */
- /* This algorithm should ensure reasonably accurate values for the */
- /* zeros. Note that they are only expressed with 16 bits when */
- /* computing the extrema (the zeros need to be in 0..1 exclusive */
- /* to be considered part of the arc). */
-
- shift = FT_MSB( FT_ABS( a ) | FT_ABS( b ) | FT_ABS( c ) );
-
- if ( shift > 22 )
- {
- shift -= 22;
-
- /* this loses some bits of precision, but we use 23 of them */
- /* for the computation anyway */
- a >>= shift;
- b >>= shift;
- c >>= shift;
- }
- else
- {
- shift = 22 - shift;
-
- a <<= shift;
- b <<= shift;
- c <<= shift;
- }
-
- /* handle a == 0 */
- if ( a == 0 )
- {
- if ( b != 0 )
- {
- t = - FT_DivFix( c, b ) / 2;
- test_cubic_extrema( y1, y2, y3, y4, t, min, max );
- }
- }
- else
- {
- /* solve the equation now */
- d = FT_MulFix( b, b ) - FT_MulFix( a, c );
- if ( d < 0 )
- return;
-
- if ( d == 0 )
- {
- /* there is a single split point at -b/a */
- t = - FT_DivFix( b, a );
- test_cubic_extrema( y1, y2, y3, y4, t, min, max );
- }
- else
- {
- /* there are two solutions; we need to filter them */
- d = FT_SqrtFixed( (FT_Int32)d );
- t = - FT_DivFix( b - d, a );
- test_cubic_extrema( y1, y2, y3, y4, t, min, max );
-
- t = - FT_DivFix( b + d, a );
- test_cubic_extrema( y1, y2, y3, y4, t, min, max );
- }
- }
- }
- }
-
-#endif
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* BBox_Cubic_To */
- /* */
- /* <Description> */
- /* This function is used as a `cubic_to' emitter during */
- /* FT_Outline_Decompose(). It checks a cubic Bezier curve with the */
- /* current bounding box, and computes its extrema if necessary to */
- /* update it. */
- /* */
- /* <Input> */
- /* control1 :: A pointer to the first control point. */
- /* */
- /* control2 :: A pointer to the second control point. */
- /* */
- /* to :: A pointer to the destination vector. */
- /* */
- /* <InOut> */
- /* user :: The address of the current walk context. */
- /* */
- /* <Return> */
- /* Always 0. Needed for the interface only. */
- /* */
- /* <Note> */
- /* In the case of a non-monotonous arc, we don't compute directly */
- /* extremum coordinates, we subdivide instead. */
- /* */
- static int
- BBox_Cubic_To( FT_Vector* control1,
- FT_Vector* control2,
- FT_Vector* to,
- TBBox_Rec* user )
- {
- /* we don't need to check `to' since it is always an `on' point, thus */
- /* within the bbox */
-
- if ( CHECK_X( control1, user->bbox ) ||
- CHECK_X( control2, user->bbox ) )
- BBox_Cubic_Check( user->last.x,
- control1->x,
- control2->x,
- to->x,
- &user->bbox.xMin,
- &user->bbox.xMax );
-
- if ( CHECK_Y( control1, user->bbox ) ||
- CHECK_Y( control2, user->bbox ) )
- BBox_Cubic_Check( user->last.y,
- control1->y,
- control2->y,
- to->y,
- &user->bbox.yMin,
- &user->bbox.yMax );
-
- user->last = *to;
-
- return 0;
- }
-
-FT_DEFINE_OUTLINE_FUNCS(bbox_interface,
- (FT_Outline_MoveTo_Func) BBox_Move_To,
- (FT_Outline_LineTo_Func) BBox_Move_To,
- (FT_Outline_ConicTo_Func)BBox_Conic_To,
- (FT_Outline_CubicTo_Func)BBox_Cubic_To,
- 0, 0
- )
-
- /* documentation is in ftbbox.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_Outline_Get_BBox( FT_Outline* outline,
- FT_BBox *abbox )
- {
- FT_BBox cbox;
- FT_BBox bbox;
- FT_Vector* vec;
- FT_UShort n;
-
-
- if ( !abbox )
- return FT_THROW( Invalid_Argument );
-
- if ( !outline )
- return FT_THROW( Invalid_Outline );
-
- /* if outline is empty, return (0,0,0,0) */
- if ( outline->n_points == 0 || outline->n_contours <= 0 )
- {
- abbox->xMin = abbox->xMax = 0;
- abbox->yMin = abbox->yMax = 0;
- return 0;
- }
-
- /* We compute the control box as well as the bounding box of */
- /* all `on' points in the outline. Then, if the two boxes */
- /* coincide, we exit immediately. */
-
- vec = outline->points;
- bbox.xMin = bbox.xMax = cbox.xMin = cbox.xMax = vec->x;
- bbox.yMin = bbox.yMax = cbox.yMin = cbox.yMax = vec->y;
- vec++;
-
- for ( n = 1; n < outline->n_points; n++ )
- {
- FT_Pos x = vec->x;
- FT_Pos y = vec->y;
-
-
- /* update control box */
- if ( x < cbox.xMin ) cbox.xMin = x;
- if ( x > cbox.xMax ) cbox.xMax = x;
-
- if ( y < cbox.yMin ) cbox.yMin = y;
- if ( y > cbox.yMax ) cbox.yMax = y;
-
- if ( FT_CURVE_TAG( outline->tags[n] ) == FT_CURVE_TAG_ON )
- {
- /* update bbox for `on' points only */
- if ( x < bbox.xMin ) bbox.xMin = x;
- if ( x > bbox.xMax ) bbox.xMax = x;
-
- if ( y < bbox.yMin ) bbox.yMin = y;
- if ( y > bbox.yMax ) bbox.yMax = y;
- }
-
- vec++;
- }
-
- /* test two boxes for equality */
- if ( cbox.xMin < bbox.xMin || cbox.xMax > bbox.xMax ||
- cbox.yMin < bbox.yMin || cbox.yMax > bbox.yMax )
- {
- /* the two boxes are different, now walk over the outline to */
- /* get the Bezier arc extrema. */
-
- FT_Error error;
- TBBox_Rec user;
-
-#ifdef FT_CONFIG_OPTION_PIC
- FT_Outline_Funcs bbox_interface;
- Init_Class_bbox_interface(&bbox_interface);
-#endif
-
- user.bbox = bbox;
-
- error = FT_Outline_Decompose( outline, &bbox_interface, &user );
- if ( error )
- return error;
-
- *abbox = user.bbox;
- }
- else
- *abbox = bbox;
-
- return FT_Err_Ok;
- }
-
-
-/* END */
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-01 13:23:09 +0000