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 <stdint.h>
  14 #include <stdio.h>
  15
  16
  17 // "IPoint" is an Integer based Point
  18 struct IPoint
  19 {
  20         int32_t x, y;
  21         bool onCurve;
  22
  23         IPoint(int32_t xx=0, int32_t yy=0, bool oc=true): x(xx), y(yy), onCurve(oc) {}
  24         bool operator==(const IPoint & p) { return (p.x == x && p.y == y ? true: false); };
  25 };
  26
  27
  28 struct GuideLine
  29 {
  30         int32_t x, y;
  31         double angle;
  32 };
  33
  34
  35 // Throws the following exceptions:
  36 #define GP_OUT_OF_RANGE  1
  37
  38 class GlyphPoints
  39 {
  40         public:
  41 //For some reason, gcc barfs here when something tries to use the copy
  42 //constructor because it gets confused between the optional arguments (which
  43 //start with an INT for cryin' out loud) and the GlyphPoints & argument. So,
  44 //Let's try making it a non-optional first param, and go from there...
  45 //Turns out the compiler barfs regardless...
  46 //Turns out the problem was that the copy ctor wasn't declared as CONST...
  47                 GlyphPoints(int nPts = 0, int nPlys = 0, int * xa = NULL, int * ya = NULL,
  48                         bool * oca = NULL, uint16_t * pa = NULL);
  49 //              GlyphPoints(void);// And now *this* is needed... Bleah!
  50 //              GlyphPoints(int nPts, int nPlys = 0, int * xa = NULL, int * ya = NULL,
  51 //                      bool * oca = NULL, uint16_t * pa = NULL);
  52                 GlyphPoints(int xx, int yy, bool oc);
  53 //              GlyphPoints(GlyphPoints &);                             // Copy constructor
  54                 GlyphPoints(const GlyphPoints &);                               // Copy constructor
  55                 ~GlyphPoints();
  56                 GlyphPoints& operator=(const GlyphPoints &);
  57                 GlyphPoints operator+(const GlyphPoints &);
  58                 GlyphPoints operator+(const IPoint &);
  59                 GlyphPoints& operator+=(const IPoint &);
  60                 void Clear(void);
  61                 void InsertPoint(uint16_t, int, int, bool);
  62                 void InsertPoint(uint16_t, const IPoint &);
  63                 void DeletePoint(uint16_t);
  64                 uint16_t GetNumPoints(void);
  65                 uint16_t GetNumPoints(uint16_t poly);
  66                 uint16_t GetNumPolys(void);
  67                 int GetX(uint16_t);
  68                 int GetY(uint16_t);
  69                 bool GetOnCurve(uint16_t);
  70                 int GetX(uint16_t, uint16_t);
  71                 int GetNextX(uint16_t, uint16_t);
  72                 int GetY(uint16_t, uint16_t);
  73                 int GetNextY(uint16_t, uint16_t);
  74                 IPoint GetPoint(uint16_t, uint16_t);
  75                 IPoint GetPoint(uint16_t);
  76                 bool GetOnCurve(uint16_t, uint16_t);
  77                 bool GetPrevOnCurve(uint16_t, uint16_t);
  78                 bool GetNextOnCurve(uint16_t, uint16_t);
  79                 uint16_t GetPolyStart(uint16_t);
  80                 uint16_t GetPolyEnd(uint16_t);
  81                 void OffsetPoints(int, int);
  82                 void OffsetPoly(uint16_t, int32_t, int32_t);
  83                 void ScalePoints(float);
  84                 void SetXY(uint16_t, int, int);
  85                 void SetOnCurve(uint16_t, bool);
  86                 void SetPoint(const uint16_t pointNum, const IPoint point);
  87                 uint16_t GetPrev(uint16_t);
  88                 uint16_t GetNext(uint16_t);
  89                 uint16_t GetPrev(uint16_t, uint16_t);
  90                 uint16_t GetNext(uint16_t, uint16_t);
  91                 uint16_t GetPoly(uint16_t);
  92                 void AddNewPolyAtEnd(void);
  93                 IPoint GetMidpointToPrev(uint16_t, uint16_t);
  94                 IPoint GetMidpointToNext(uint16_t, uint16_t);
  95                 IPoint GetPrevPoint(uint16_t, uint16_t);
  96                 IPoint GetNextPoint(uint16_t, uint16_t);
  97                 uint16_t GetPolyForPoint(IPoint point);
  98                 uint16_t GetPolyForPointNumber(uint16_t pointNumber);
  99
 100                 IPoint RotatePoint(const double angle, const IPoint point, const IPoint center);
 101                 void RotatePoints(const double angle, const IPoint point);
 102                 IPoint GetPolyCentroid(const int16_t poly);
 103                 void RotatePolyAroundCentroid(const int16_t poly, const double angle);
 104                 void InvertPolyDrawSequence(const uint16_t poly);
 105
 106                 bool LoadGlyphFromFile(FILE *);
 107                 bool SaveGlyphToFile(FILE *);
 108
 109         private:
 110                 void AllocateAndCopy(int, int, int *, int *, bool *, uint16_t *);
 111                 void FreeAllocatedMemory(void);
 112
 113         private:
 114                 int numPoints, numPolys;
 115                 int * x, * y;
 116                 bool * onCurve;
 117                 uint16_t * polyEnd;
 118                 uint16_t pointsAllocated, polysAllocated;
 119 };
 120
 121 #endif  // __GLYPHPOINTS_H__