Shamusworld >> Repos - ttedit/blob - src/glyphpoints.h

   1 //
   2 // glyphpoints.h
   3 //
   4 // by James L. Hammons
   5 //
   6 // This class encapsulates the data associated with a TrueType glyph.
   7 // Data is dynamically allocated.
   8 //
   9
  10 #ifndef __GLYPHPOINTS_H__
  11 #define __GLYPHPOINTS_H__
  12
  13 #include "types.h"
  14 #include <stdio.h>
  15
  16
  17 // "IPoint" is an Integer based Point
  18 struct IPoint
  19 {
  20         int32 x, y;
  21         bool onCurve;
  22
  23         IPoint(int32 xx=0, int32 yy=0, bool oc=true): x(xx), y(yy), onCurve(oc) {}
  24 };
  25
  26 // Throws the following exceptions:
  27 #define GP_OUT_OF_RANGE  1
  28
  29 class GlyphPoints
  30 {
  31         public:
  32 //For some reason, gcc barfs here when something tries to use the copy
  33 //constructor because it gets confused between the optional arguments (which
  34 //start with an INT for cryin' out loud) and the GlyphPoints & argument. So,
  35 //Let's try making it a non-optional first param, and go from there...
  36 //Turns out the compiler barfs regardless...
  37 //Turns out the problem was that the copy ctor wasn't declared as CONST...
  38                 GlyphPoints(int nPts = 0, int nPlys = 0, int * xa = NULL, int * ya = NULL,
  39                         bool * oca = NULL, uint16 * pa = NULL);
  40 //              GlyphPoints(void);// And now *this* is needed... Bleah!
  41 //              GlyphPoints(int nPts, int nPlys = 0, int * xa = NULL, int * ya = NULL,
  42 //                      bool * oca = NULL, uint16 * pa = NULL);
  43                 GlyphPoints(int xx, int yy, bool oc);
  44 //              GlyphPoints(GlyphPoints &);                             // Copy constructor
  45                 GlyphPoints(const GlyphPoints &);                               // Copy constructor
  46                 ~GlyphPoints();
  47                 GlyphPoints& operator=(const GlyphPoints &);
  48                 GlyphPoints operator+(const GlyphPoints &);
  49                 GlyphPoints operator+(const IPoint &);
  50                 GlyphPoints& operator+=(const IPoint &);
  51                 void Clear(void);
  52                 void InsertPoint(uint16, int, int, bool);
  53                 void InsertPoint(uint16, const IPoint &);
  54                 void DeletePoint(uint16);
  55                 uint16 GetNumPoints(void);
  56                 uint16 GetNumPoints(uint16 poly);
  57                 uint16 GetNumPolys(void);
  58                 int GetX(uint16);
  59                 int GetY(uint16);
  60                 bool GetOnCurve(uint16);
  61                 int GetX(uint16, uint16);
  62                 int GetNextX(uint16, uint16);
  63                 int GetY(uint16, uint16);
  64                 int GetNextY(uint16, uint16);
  65                 IPoint GetPoint(uint16, uint16);
  66                 bool GetOnCurve(uint16, uint16);
  67                 bool GetPrevOnCurve(uint16, uint16);
  68                 bool GetNextOnCurve(uint16, uint16);
  69                 uint16 GetPolyStart(uint16);
  70                 uint16 GetPolyEnd(uint16);
  71                 void OffsetPoints(int, int);
  72                 void OffsetPoly(uint16, int32, int32);
  73                 void ScalePoints(float);
  74                 void SetXY(uint16, int, int);
  75                 void SetOnCurve(uint16, bool);
  76                 uint16 GetPrev(uint16);
  77                 uint16 GetNext(uint16);
  78                 uint16 GetPrev(uint16, uint16);
  79                 uint16 GetNext(uint16, uint16);
  80                 uint16 GetPoly(uint16);
  81                 void AddNewPolyAtEnd(void);
  82                 IPoint GetMidpointToPrev(uint16, uint16);
  83                 IPoint GetMidpointToNext(uint16, uint16);
  84                 IPoint GetPrevPoint(uint16, uint16);
  85                 IPoint GetNextPoint(uint16, uint16);
  86
  87                 IPoint RotatePoint(const double angle, const IPoint point, const IPoint center);
  88                 void RotatePoints(const double angle, const IPoint point);
  89                 IPoint GetPolyCentroid(const int16 poly);
  90                 void RotatePolyAroundCentroid(const int16 poly, const double angle);
  91
  92                 bool LoadGlyphFromFile(FILE *);
  93                 bool SaveGlyphToFile(FILE *);
  94
  95         private:
  96                 void AllocateAndCopy(int, int, int *, int *, bool *, uint16 *);
  97                 void FreeAllocatedMemory(void);
  98
  99         private:
 100                 int numPoints, numPolys;
 101                 int * x, * y;
 102                 bool * onCurve;
 103                 uint16 * polyEnd;
 104                 uint16 pointsAllocated, polysAllocated;
 105 };
 106
 107 #endif  // __GLYPHPOINTS_H__