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/* $Xorg: paths.h,v 1.3 2000/08/17 19:46:31 cpqbld Exp $ */
/* Copyright International Business Machines, Corp. 1991
* All Rights Reserved
* Copyright Lexmark International, Inc. 1991
* All Rights Reserved
*
* License to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appear in all copies and that
* both that copyright notice and this permission notice appear in
* supporting documentation, and that the name of IBM or Lexmark not be
* used in advertising or publicity pertaining to distribution of the
* software without specific, written prior permission.
*
* IBM AND LEXMARK PROVIDE THIS SOFTWARE "AS IS", WITHOUT ANY WARRANTIES OF
* ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO ANY
* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
* AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. THE ENTIRE RISK AS TO THE
* QUALITY AND PERFORMANCE OF THE SOFTWARE, INCLUDING ANY DUTY TO SUPPORT
* OR MAINTAIN, BELONGS TO THE LICENSEE. SHOULD ANY PORTION OF THE
* SOFTWARE PROVE DEFECTIVE, THE LICENSEE (NOT IBM OR LEXMARK) ASSUMES THE
* ENTIRE COST OF ALL SERVICING, REPAIR AND CORRECTION. IN NO EVENT SHALL
* IBM OR LEXMARK BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
* THIS SOFTWARE.
*/
/* $XFree86$ */
/*SHARED*/
#define Loc(S,x,y) t1_Loc(S,(double)x,(double)y)
#define ILoc(S,x,y) t1_ILoc(S,x,y)
#define Line(P) t1_Line(P)
#define Join(p1,p2) t1_Join(p1,p2)
#define ClosePath(p) t1_ClosePath(p,0)
#define CloseLastSubPath(p) t1_ClosePath(p,1)
#define Conic(B,C,s) t1_Conic(B,C,(double)s)
#define RoundConic(M,C,r) t1_RoundConic(M,C,(double)r)
#define ArcP3(S,P2,P3) t1_ArcP3(S,P2,P3)
#define ArcCA(S,C,d) t1_ArcCA(S,C,(double)d)
#define Bezier(B,C,D) t1_Bezier(B,C,D)
#define Hint(S,r,w,o,h,a,d,l) t1_Hint(S,r,w,o,h,a,d,l)
#define Reverse(p) t1_Reverse(p)
#define ReverseSubPaths(p) t1_ReverseSubPaths(p)
#define AddLoc(p1,p2) t1_Join(p1,p2)
#define SubLoc(p1,p2) t1_SubLoc(p1,p2)
#define DropSegment(p) t1_DropSegment(p)
#define HeadSegment(p) t1_HeadSegment(p)
#define QueryLoc(P,S,x,y) t1_QueryLoc(P,S,x,y)
#define QueryPath(p,t,B,C,D,r) t1_QueryPath(p,t,B,C,D,r)
#define QueryBounds(p,S,x1,y1,x2,y2) t1_QueryBounds(p,S,x1,y1,x2,y2)
/* create a location object (or "move" segment) */
extern struct segment *t1_Loc ( struct XYspace *S, double x, double y );
/* integer argument version of same */
extern struct segment *t1_ILoc ( struct XYspace *S, int x, int y );
/* straight line path segment */
extern struct segment *t1_Line ( struct segment *P );
/* join two paths or regions together */
extern struct segment *t1_Join ( struct segment *p1, struct segment *p2 );
/* close a path or path set */
extern struct segment *t1_ClosePath ( struct segment *p0, int lastonly );
#if 0
struct conicsegment *t1_Conic(); /* conic curve path segment */
struct conicsegment *t1_RoundConic(); /* ditto, specified another way */
struct conicsegment *t1_ArcP3(); /* circular path segment with three points */
struct conicsegment *t1_ArcCA(); /* ditto, with center point and angle */
#endif
/* Bezier third order curve path segment */
extern struct beziersegment *t1_Bezier ( struct segment *B, struct segment *C,
struct segment *D );
/* produce a font 'hint' path segment */
extern struct hintsegment *t1_Hint ( struct XYspace *S, float ref, float width,
char orientation, char hinttype,
char adjusttype, char direction,
int label );
/* reverse the complete order of paths */
extern struct segment *t1_Reverse ( struct segment *p );
/* reverse only sub-paths; moves unchanged */
extern struct segment *t1_ReverseSubPaths ( struct segment *p );
/* subtract two location objects */
extern struct segment *t1_SubLoc ( struct segment *p1, struct segment *p2 );
/* Drop the first segment in a path */
extern struct segment *t1_DropSegment ( struct segment *path );
/* return the first segment in a path */
extern struct segment *t1_HeadSegment ( struct segment *path );
/* Query location; return its (x,y) */
extern void t1_QueryLoc ( struct segment *P, struct XYspace *S, double *xP,
double *yP );
/* Query segment at head of a path */
extern void t1_QueryPath ( struct segment *path, int *typeP,
struct segment **Bp, struct segment **Cp,
struct segment **Dp, double *fP );
/* Query the bounding box of a path */
extern void t1_QueryBounds ( struct segment *p0, struct XYspace *S,
double *xminP, double *yminP,
double *xmaxP, double *ymaxP );
/*END SHARED*/
/*SHARED*/
#define CopyPath(p) t1_CopyPath(p)
#define KillPath(p) t1_KillPath(p)
#define PathTransform(p,m) t1_PathXform(p,m)
#define PathDelta(p,pt) t1_PathDelta(p,pt)
#define BoundingBox(h,w) t1_BoundingBox(h,w)
#define PathSegment(t,x,y) t1_PathSegment(t,(fractpel)x,(fractpel)y)
#define JoinSegment(b,t,x,y,a) t1_JoinSegment(b,t,(fractpel)x,(fractpel)y,a)
#define Hypoteneuse(dx,dy) t1_Hypoteneuse(dx,dy)
#define BoxPath(S,h,w) t1_BoxPath(S,h,w)
/* duplicate a path */
extern struct segment *t1_CopyPath ( struct segment *p0 );
/* destroy a path */
extern void t1_KillPath ( struct segment *p );
/* transform a path arbitrarily */
extern struct segment *t1_PathXform ( struct segment *p0, struct XYspace *S );
/* calculate the ending point of a path */
extern void t1_PathDelta ( struct segment *p, struct fractpoint *pt );
/* */
extern struct segment *t1_BoundingBox ( pel h, pel w );
/* produce a MOVE or LINE segment */
extern struct segment *t1_PathSegment ( int type, fractpel x, fractpel y );
/* join a MOVE or LINE segment to a path */
extern struct segment *t1_JoinSegment ( struct segment *before, int type, fractpel x, fractpel y, struct segment *after );
#if 0
double t1_Hypoteneuse(); /* returns the length of a line */
#endif
/* returns a rectangular path */
extern struct segment *t1_BoxPath ( struct XYspace *S, int h, int w );
/*END SHARED*/
/*SHARED*/
#define ConsumePath(p) MAKECONSUME(p,KillPath(p))
#define UniquePath(p) MAKEUNIQUE(p,CopyPath(p))
/*END SHARED*/
/*SHARED*/
struct segment {
XOBJ_COMMON /* xobject common data define 3-26-91 PNM */
unsigned char size; /* size of the structure */
unsigned char context; /* index to device context */
struct segment *link; /* pointer to next structure in linked list */
struct segment *last; /* pointer to last structure in list */
struct fractpoint dest; /* relative ending location of path segment */
} ;
#define ISCLOSED(flag) ((flag)&0x80) /* subpath is closed */
#define LASTCLOSED(flag) ((flag)&0x40) /* last segment in closed subpath */
/*
NOTE: The ISCLOSED flag is set on the MOVETYPE segment before the
subpath proper; the LASTCLOSED flag is set on the last segment (LINETYPE)
in the subpath
We define the ISPATHANCHOR predicate to test that a path handle
passed by the user is valid:
*/
#define ISPATHANCHOR(p) (ISPATHTYPE(p->type)&&p->last!=NULL)
/*
For performance reasons, a user's "location" object is identical to
a path whose only segment is a move segment. We define a predicate
to test for this case. See also :hdref refid=location..
*/
#define ISLOCATION(p) ((p)->type == MOVETYPE && (p)->link == NULL)
/*END SHARED*/
/*SHARED*/
struct conicsegment {
XOBJ_COMMON /* xobject common data define 3-26-91 PNM */
/* type = CONICTYPE */
unsigned char size; /* as with any 'segment' type */
unsigned char context; /* as with any 'segment' type */
struct segment *link; /* as with any 'segment' type */
struct segment *last; /* as with any 'segment' type */
struct fractpoint dest; /* Ending point (C point) */
struct fractpoint M; /* "midpoint" of conic explained above */
float roundness; /* explained above */
} ;
/*END SHARED*/
/*SHARED*/
struct beziersegment {
XOBJ_COMMON /* xobject common data define 3-26-91 PNM */
/* type = BEZIERTYPE */
unsigned char size; /* as with any 'segment' type */
unsigned char context; /* as with any 'segment' type */
struct segment *link; /* as with any 'segment' type */
struct segment *last; /* as with any 'segment' type */
struct fractpoint dest; /* ending point (D) */
struct fractpoint B; /* control point B */
struct fractpoint C; /* control point C */
} ;
/*END SHARED*/
/*SHARED*/
struct hintsegment {
XOBJ_COMMON /* xobject common data define 3-26-91 PNM */
/* type = HINTTYPE */
unsigned char size; /* size of the structure */
unsigned char context; /* device context */
struct segment *link; /* pointer to next structure in linked list */
struct segment *last; /* pointer to last structure in list */
struct fractpoint dest; /* ALWAYS 0,0 */
struct fractpoint ref;
struct fractpoint width;
char orientation;
char hinttype;
char adjusttype;
char direction;
int label;
} ;
/*END SHARED*/
/*SHARED*/
/*
CONCAT links the 'p2' path chain on the end of the 'p1' chain. (This macro
is also used by the STROKES module.)
*/
#define CONCAT(p1, p2) { \
p1->last->link = p2; /* link p2 on end of p1 */ \
p1->last = p2->last; /* last of new is last of p2 */ \
p2->last = NULL; } /* only first segment has non-NULL "last" */
/*END SHARED*/
/* dump a path list */
extern void t1_DumpPath ( struct segment *p );
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