headers/libs/agg/agg_arrowhead.h

   1 //----------------------------------------------------------------------------
   2 // Anti-Grain Geometry - Version 2.4
   3 // Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
   4 //
   5 // Permission to copy, use, modify, sell and distribute this software
   6 // is granted provided this copyright notice appears in all copies.
   7 // This software is provided "as is" without express or implied
   8 // warranty, and with no claim as to its suitability for any purpose.
   9 //
  10 //----------------------------------------------------------------------------
  11 // Contact: mcseem@antigrain.com
  12 //          mcseemagg@yahoo.com
  13 //          http://www.antigrain.com
  14 //----------------------------------------------------------------------------
  15 //
  16 // Simple arrowhead/arrowtail generator
  17 //
  18 //----------------------------------------------------------------------------
  19 #ifndef AGG_ARROWHEAD_INCLUDED
  20 #define AGG_ARROWHEAD_INCLUDED
  21
  22 #include "agg_basics.h"
  23
  24 namespace agg
  25 {
  26
  27     //===============================================================arrowhead
  28     //
  29     // See implementation agg_arrowhead.cpp
  30     //
  31     class arrowhead
  32     {
  33     public:
  34         arrowhead();
  35
  36         void head(double d1, double d2, double d3, double d4)
  37         {
  38             m_head_d1 = d1;
  39             m_head_d2 = d2;
  40             m_head_d3 = d3;
  41             m_head_d4 = d4;
  42             m_head_flag = true;
  43         }
  44
  45         void head()    { m_head_flag = true; }
  46         void no_head() { m_head_flag = false; }
  47
  48         void tail(double d1, double d2, double d3, double d4)
  49         {
  50             m_tail_d1 = d1;
  51             m_tail_d2 = d2;
  52             m_tail_d3 = d3;
  53             m_tail_d4 = d4;
  54             m_tail_flag = true;
  55         }
  56
  57         void tail()    { m_tail_flag = true;  }
  58         void no_tail() { m_tail_flag = false; }
  59
  60         void rewind(unsigned path_id);
  61         unsigned vertex(double* x, double* y);
  62
  63     private:
  64         double   m_head_d1;
  65         double   m_head_d2;
  66         double   m_head_d3;
  67         double   m_head_d4;
  68         double   m_tail_d1;
  69         double   m_tail_d2;
  70         double   m_tail_d3;
  71         double   m_tail_d4;
  72         bool     m_head_flag;
  73         bool     m_tail_flag;
  74         double   m_coord[16];
  75         unsigned m_cmd[8];
  76         unsigned m_curr_id;
  77         unsigned m_curr_coord;
  78     };
  79
  80 }
  81
  82 #endif