headers/libs/agg/agg_vcgen_contour.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 #ifndef AGG_VCGEN_CONTOUR_INCLUDED
  17 #define AGG_VCGEN_CONTOUR_INCLUDED
  18
  19 #include "agg_math_stroke.h"
  20
  21 namespace agg
  22 {
  23
  24     //----------------------------------------------------------vcgen_contour
  25     //
  26     // See Implementation agg_vcgen_contour.cpp
  27     //
  28     class vcgen_contour
  29     {
  30         enum status_e
  31         {
  32             initial,
  33             ready,
  34             outline,
  35             out_vertices,
  36             end_poly,
  37             stop
  38         };
  39
  40     public:
  41         typedef vertex_sequence<vertex_dist, 6> vertex_storage;
  42         typedef pod_bvector<point_d, 6>         coord_storage;
  43
  44         vcgen_contour();
  45
  46         void line_cap(line_cap_e lc)     { m_stroker.line_cap(lc); }
  47         void line_join(line_join_e lj)   { m_stroker.line_join(lj); }
  48         void inner_join(inner_join_e ij) { m_stroker.inner_join(ij); }
  49
  50         line_cap_e   line_cap()   const { return m_stroker.line_cap(); }
  51         line_join_e  line_join()  const { return m_stroker.line_join(); }
  52         inner_join_e inner_join() const { return m_stroker.inner_join(); }
  53
  54         void width(double w) { m_stroker.width(m_width = w); }
  55         void miter_limit(double ml) { m_stroker.miter_limit(ml); }
  56         void miter_limit_theta(double t) { m_stroker.miter_limit_theta(t); }
  57         void inner_miter_limit(double ml) { m_stroker.inner_miter_limit(ml); }
  58         void approximation_scale(double as) { m_stroker.approximation_scale(as); }
  59
  60         double width() const { return m_width; }
  61         double miter_limit() const { return m_stroker.miter_limit(); }
  62         double inner_miter_limit() const { return m_stroker.inner_miter_limit(); }
  63         double approximation_scale() const { return m_stroker.approximation_scale(); }
  64
  65         void auto_detect_orientation(bool v) { m_auto_detect = v; }
  66         bool auto_detect_orientation() const { return m_auto_detect; }
  67
  68         // Generator interface
  69         void remove_all();
  70         void add_vertex(double x, double y, unsigned cmd);
  71
  72         // Vertex Source Interface
  73         void     rewind(unsigned path_id);
  74         unsigned vertex(double* x, double* y);
  75
  76     private:
  77         vcgen_contour(const vcgen_contour&);
  78         const vcgen_contour& operator = (const vcgen_contour&);
  79
  80         math_stroke<coord_storage> m_stroker;
  81         double                     m_width;
  82         vertex_storage             m_src_vertices;
  83         coord_storage              m_out_vertices;
  84         status_e                   m_status;
  85         unsigned                   m_src_vertex;
  86         unsigned                   m_out_vertex;
  87         unsigned                   m_closed;
  88         unsigned                   m_orientation;
  89         bool                       m_auto_detect;
  90     };
  91
  92 }
  93
  94 #endif