geometry.h

   1 #ifndef GEOMETRY_H_G
   2 #define GEOMETRY_H_G
   3
   4 typedef struct {
   5         double x,y;
   6 } Vect;
   7
   8 typedef struct {
   9         Vect *v; //vertexs
  10         Vect *n;        //normal's for loines between v[i] and v[i+1]
  11         double *a;      //dot products
  12         int novec;
  13         int alloc;
  14 } Poly;
  15
  16 double DotProduct(Vect *a, Vect *b);
  17 void NormV(Vect *v);
  18
  19 int InPoly(Poly *p, Vect *v);
  20 Poly *NewPoly();
  21 int AddToPoly(Poly *p,Vect *v);
  22 int AddToPolyXY(Poly *p, double x, double y);
  23 void FreePoly(Poly *p);
  24 Poly *NewRect(double x, double y, double xx, double yy);
  25 int PolyInPoly(Poly *p1, Poly *p2); //does they intersect?
  26 int PolyInPolyComp(Poly *p1, Poly *p2); // is one completely inside another? 0 no 1 first in second 2 second in first
  27 Poly *TranslatePolyXY(Poly *p, double x, double y); //returns translated copy of Poly
  28 Poly *TranslatePoly(Poly *p, Vect *v); //returns translated copy of Poly
  29 void MultiplyPoly(Poly *p, double xm, double ym);
  30 void PrintPoly(Poly *p);
  31 void PrintVect(Vect *a);
  32 char *Poly2String(Poly *p);
  33 void FreePoly2String(char *s);
  34 Poly *String2Poly(char *s);
  35
  36 typedef struct{
  37         int nopol;
  38         Poly **p;
  39 } Area;
  40
  41 Area *NewArea();
  42 void FreeArea(Area *a);
  43 int AddToArea(Area *a, Poly *p);
  44 int InArea(Area *a, Vect *v);
  45 int AreaInArea(Area *a1, Area *a2); //does they intersect?
  46 int AreaInAreaComp(Area *a1, Area *a2); // is one completely inside another? 0 no 1 first in second 2 second in first
  47 Area *TranslateAreaXY(Area *a, double x, double y); //returns translated copy of Area
  48 Area *TranslateArea(Area *a, Vect *v); //returns translated copy of Area
  49 void MultiplyArea(Area *p, double xm, double ym);
  50 void PrintArea(Area *a);
  51 char *Area2String(Area *a);
  52 void FreeArea2String(char *s);
  53 Area *String2Area(char *s);
  54 #endif //GEOMETRY_H_G