ccstruct/polyblk.h

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#ifndef           POLYBLK_H
#define           POLYBLK_H

#include          "rect.h"
#include          "points.h"
#include          "grphics.h"
#include          "elst.h"

#include          "hpddef.h"     //must be last (handpd.dll)

enum POLY_TYPE
{
  POLY_TEXT,
  POLY_PAGE,
  POLY_X
};

class DLLSYM POLY_BLOCK
{

  public:
    POLY_BLOCK() { 
    }                            //empty constructor
    POLY_BLOCK(  //simple constructor
               ICOORDELT_LIST *points,
               POLY_TYPE t);
    ~POLY_BLOCK () {
    }                            //destructor

    BOX *bounding_box() {  // access function
      return &box;
    }

    ICOORDELT_LIST *points() {  // access function
      return &vertices;
    }

    void compute_bb(); 

    POLY_TYPE isA() { 
      return type;
    }

    void rotate(  //rotate it
                FCOORD rotation);
    void move(                //move it
              ICOORD shift);  //vector

    void plot(WINDOW window, COLOUR colour, INT32 num); 

    void fill(WINDOW window, COLOUR colour); 

    BOOL8 contains(  // is poly inside poly
                   POLY_BLOCK *poly);

    BOOL8 overlap(  // do polys overlap
                  POLY_BLOCK *poly);

    INT16 winding_number(                         // get winding number
                         const ICOORD &test_pt);  // around this point

    void prep_serialise() { 
      vertices.prep_serialise ();
    }

    void dump(FILE *f) { 
      vertices.dump (f);
    }

    void de_dump(FILE *f) { 
      vertices.de_dump (f);
    }

                                 //convert to ascii
    make_serialise (POLY_BLOCK) void serialise_asc (
      FILE * f);
    void de_serialise_asc(  //convert from ascii
                          FILE *f);

  private:
    ICOORDELT_LIST vertices;
    BOX box;
    POLY_TYPE type;
};

class DLLSYM PB_LINE_IT
{
  public:
    PB_LINE_IT(  //constructor
               POLY_BLOCK *blkptr) {
      block = blkptr;
    }

    NEWDELETE2 (PB_LINE_IT) void set_to_block (POLY_BLOCK * blkptr) {
      block = blkptr;
    }

    ICOORDELT_LIST *get_line(INT16 y); 

  private:
    POLY_BLOCK * block;
};
#endif

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