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77 lines
3 KiB
C
77 lines
3 KiB
C
/*
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* UserPath.h by Bruce Blumberg, NeXT Computer, Inc.
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*
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* You may freely copy,distribute and re-use the code in this example. NeXT
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* disclaims any warranty of any kind, expressed or implied, as to its fitness
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* for any particular purpose
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*
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* This file and its associated .m file define a data structure and set of
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* functions aimed at facilitating the use of user paths. Here is a simple
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* example:
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*
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* UserPath *arect;
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* arect = newUserPath(); // creates an empty user path
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* beginUserPath(arect,YES); // initialize user path and cache
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* UPmoveto(arect,0.0,0.0); // add moveto to userpath; update bounding box
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* UPrlineto(arect,0.0,100.0); // add rlineto to path; update bounding box
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* UPrlineto(arect,100.0,0.0); // add rlineto to path; update bounding box
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* UPrlineto(arect,0.0,-100.0); // add rlineto to path; update bounding box
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* closePath(arect); // close path
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* endUserPath(arect,dps_stroke); // close user path and specify operator
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* sendUserPath(arect);
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*
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* As you will note, the set of routines manage the allocation and growth of
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* the operator and operand arrays, as well as the calculation of the bounding
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* box. A user path created via these functions may be optionally cached down
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* at the window server, or repeatedly sent down. The user paths created by
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* this set of functions are all allocated in a unique zone.
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*
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* Note: the associated file is a .m file because it pulls in some .h files
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* which reference objective C methods.
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*/
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#ifndef UserPath_h
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#define UserPath_h
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#include <objc/objc.h>
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#include <AppKit/NSGraphicsContext.h>
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typedef struct _UP {
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float *points;
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int numberOfPoints;
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char *ops;
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NSPoint cp;
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int numberOfOps;
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int max;
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float bbox[4];
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int opForUserPath;
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BOOL ping;
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} UserPath;
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/* UserPath functions */
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NSZone *userPathZone();
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UserPath *newUserPath();
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void freeUserPath(UserPath *up);
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void debugUserPath(UserPath *up, BOOL shouldPing);
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void growUserPath(UserPath *up);
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void beginUserPath(UserPath *up, BOOL cache);
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void endUserPath(UserPath *up, int op);
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int sendUserPath(UserPath *up);
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void UPmoveto(UserPath *up, float x, float y);
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void UPrmoveto(UserPath *up, float x, float y);
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void UPlineto(UserPath *up, float x, float y);
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void UPrlineto(UserPath *up, float x, float y);
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void UPcurveto(UserPath *up, float x1, float y1, float x2, float y2, float x3,
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float y3);
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void UPrcurveto(UserPath *up, float dx1, float dy1, float dx2, float dy2,
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float dx3, float dy3);
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void UParc(UserPath *up, float x, float y, float r, float ang1, float ang2);
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void UParcn(UserPath *up, float x, float y, float r, float ang1, float ang2);
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void UParct(UserPath *up, float x1, float y1, float x2, float y2, float r);
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void closePath(UserPath *up);
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void addPts(UserPath *up, float x, float y);
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void addOp(UserPath *up, int op);
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void add(UserPath *up, int op, float x, float y);
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void checkBBox(UserPath *up, float x, float y);
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#endif//UserPath_h
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