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/* $Xorg: paths.h,v 1.3 2000/08/17 19:46:31 cpqbld Exp $ */
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/* Copyright International Business Machines, Corp. 1991
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* Copyright Lexmark International, Inc. 1991
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* License to use, copy, modify, and distribute this software and its
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* documentation for any purpose and without fee is hereby granted,
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* provided that the above copyright notice appear in all copies and that
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* both that copyright notice and this permission notice appear in
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* supporting documentation, and that the name of IBM or Lexmark not be
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* used in advertising or publicity pertaining to distribution of the
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* software without specific, written prior permission.
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* IBM AND LEXMARK PROVIDE THIS SOFTWARE "AS IS", WITHOUT ANY WARRANTIES OF
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* ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
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* AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. THE ENTIRE RISK AS TO THE
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* QUALITY AND PERFORMANCE OF THE SOFTWARE, INCLUDING ANY DUTY TO SUPPORT
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* OR MAINTAIN, BELONGS TO THE LICENSEE. SHOULD ANY PORTION OF THE
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* SOFTWARE PROVE DEFECTIVE, THE LICENSEE (NOT IBM OR LEXMARK) ASSUMES THE
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* ENTIRE COST OF ALL SERVICING, REPAIR AND CORRECTION. IN NO EVENT SHALL
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* IBM OR LEXMARK BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
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/* $XFree86: xc/lib/font/Type1/paths.h,v 1.3 1999/08/22 08:58:53 dawes Exp $ */
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#define Loc(S,x,y) t1_Loc(S,(double)x,(double)y)
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#define ILoc(S,x,y) t1_ILoc(S,x,y)
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#define Line(P) t1_Line(P)
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#define Join(p1,p2) t1_Join(p1,p2)
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#define ClosePath(p) t1_ClosePath(p,0)
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#define CloseLastSubPath(p) t1_ClosePath(p,1)
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#define Conic(B,C,s) t1_Conic(B,C,(double)s)
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#define RoundConic(M,C,r) t1_RoundConic(M,C,(double)r)
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#define ArcP3(S,P2,P3) t1_ArcP3(S,P2,P3)
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#define ArcCA(S,C,d) t1_ArcCA(S,C,(double)d)
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#define Bezier(B,C,D) t1_Bezier(B,C,D)
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#define Hint(S,r,w,o,h,a,d,l) t1_Hint(S,r,w,o,h,a,d,l)
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#define Reverse(p) t1_Reverse(p)
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#define ReverseSubPaths(p) t1_ReverseSubPaths(p)
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#define AddLoc(p1,p2) t1_Join(p1,p2)
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#define SubLoc(p1,p2) t1_SubLoc(p1,p2)
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#define DropSegment(p) t1_DropSegment(p)
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#define HeadSegment(p) t1_HeadSegment(p)
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#define QueryLoc(P,S,x,y) t1_QueryLoc(P,S,x,y)
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#define QueryPath(p,t,B,C,D,r) t1_QueryPath(p,t,B,C,D,r)
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#define QueryBounds(p,S,x1,y1,x2,y2) t1_QueryBounds(p,S,x1,y1,x2,y2)
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/* create a location object (or "move" segment) */
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extern struct segment *t1_Loc ( struct XYspace *S, double x, double y );
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/* integer argument version of same */
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extern struct segment *t1_ILoc ( struct XYspace *S, int x, int y );
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/* straight line path segment */
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extern struct segment *t1_Line ( struct segment *P );
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/* join two paths or regions together */
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extern struct segment *t1_Join ( struct segment *p1, struct segment *p2 );
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/* close a path or path set */
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extern struct segment *t1_ClosePath ( struct segment *p0, int lastonly );
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struct conicsegment *t1_Conic(); /* conic curve path segment */
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struct conicsegment *t1_RoundConic(); /* ditto, specified another way */
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struct conicsegment *t1_ArcP3(); /* circular path segment with three points */
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struct conicsegment *t1_ArcCA(); /* ditto, with center point and angle */
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/* Bezier third order curve path segment */
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extern struct beziersegment *t1_Bezier ( struct segment *B, struct segment *C,
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/* Query location; return its (x,y) */
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extern void t1_QueryLoc ( struct segment *P, struct XYspace *S, double *xP,
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#define CopyPath(p) t1_CopyPath(p)
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#define KillPath(p) t1_KillPath(p)
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#define PathTransform(p,m) t1_PathXform(p,m)
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#define PathDelta(p,pt) t1_PathDelta(p,pt)
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#define BoundingBox(h,w) t1_BoundingBox(h,w)
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#define PathSegment(t,x,y) t1_PathSegment(t,(fractpel)x,(fractpel)y)
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#define JoinSegment(b,t,x,y,a) t1_JoinSegment(b,t,(fractpel)x,(fractpel)y,a)
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#define Hypoteneuse(dx,dy) t1_Hypoteneuse(dx,dy)
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/* duplicate a path */
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extern struct segment *t1_CopyPath ( struct segment *p0 );
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extern void t1_KillPath ( struct segment *p );
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/* transform a path arbitrarily */
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extern struct segment *t1_PathXform ( struct segment *p0, struct XYspace *S );
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/* calculate the ending point of a path */
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extern void t1_PathDelta ( struct segment *p, struct fractpoint *pt );
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/* produce a MOVE or LINE segment */
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extern struct segment *t1_PathSegment ( int type, fractpel x, fractpel y );
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/* join a MOVE or LINE segment to a path */
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extern struct segment *t1_JoinSegment ( struct segment *before, int type, fractpel x, fractpel y, struct segment *after );
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#define ConsumePath(p) MAKECONSUME(p,KillPath(p))
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#define UniquePath(p) MAKEUNIQUE(p,CopyPath(p))
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XOBJ_COMMON /* xobject common data define 3-26-91 PNM */
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unsigned char size; /* size of the structure */
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unsigned char context; /* index to device context */
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struct segment *link; /* pointer to next structure in linked list */
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struct segment *last; /* pointer to last structure in list */
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struct fractpoint dest; /* relative ending location of path segment */
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#define ISCLOSED(flag) ((flag)&0x80) /* subpath is closed */
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#define LASTCLOSED(flag) ((flag)&0x40) /* last segment in closed subpath */
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NOTE: The ISCLOSED flag is set on the MOVETYPE segment before the
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subpath proper; the LASTCLOSED flag is set on the last segment (LINETYPE)
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We define the ISPATHANCHOR predicate to test that a path handle
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passed by the user is valid:
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#define ISPATHANCHOR(p) (ISPATHTYPE(p->type)&&p->last!=NULL)
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For performance reasons, a user's "location" object is identical to
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a path whose only segment is a move segment. We define a predicate
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to test for this case. See also :hdref refid=location..
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#define ISLOCATION(p) ((p)->type == MOVETYPE && (p)->link == NULL)
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struct conicsegment {
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XOBJ_COMMON /* xobject common data define 3-26-91 PNM */
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/* type = CONICTYPE */
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unsigned char size; /* as with any 'segment' type */
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unsigned char context; /* as with any 'segment' type */
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struct segment *link; /* as with any 'segment' type */
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struct segment *last; /* as with any 'segment' type */
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struct fractpoint dest; /* Ending point (C point) */
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struct fractpoint M; /* "midpoint" of conic explained above */
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float roundness; /* explained above */
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struct beziersegment {
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XOBJ_COMMON /* xobject common data define 3-26-91 PNM */
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/* type = BEZIERTYPE */
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unsigned char size; /* as with any 'segment' type */
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unsigned char context; /* as with any 'segment' type */
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struct segment *link; /* as with any 'segment' type */
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struct segment *last; /* as with any 'segment' type */
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struct fractpoint dest; /* ending point (D) */
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struct fractpoint B; /* control point B */
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struct fractpoint C; /* control point C */
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XOBJ_COMMON /* xobject common data define 3-26-91 PNM */
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/* type = HINTTYPE */
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unsigned char size; /* size of the structure */
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unsigned char context; /* device context */
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struct segment *link; /* pointer to next structure in linked list */
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struct segment *last; /* pointer to last structure in list */
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struct fractpoint dest; /* ALWAYS 0,0 */
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struct fractpoint ref;
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struct fractpoint width;
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CONCAT links the 'p2' path chain on the end of the 'p1' chain. (This macro
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is also used by the STROKES module.)
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#define CONCAT(p1, p2) { \
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p1->last->link = p2; /* link p2 on end of p1 */ \
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p1->last = p2->last; /* last of new is last of p2 */ \
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p2->last = NULL; } /* only first segment has non-NULL "last" */
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src/Type1/paths.h
