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_TRANS_SINGLE_PATH_INCLUDED 17 #define AGG_TRANS_SINGLE_PATH_INCLUDED 18 19 #include "agg_basics.h" 20 #include "agg_vertex_sequence.h" 21 22 namespace agg 23 { 24 25 // See also: agg_trans_single_path.cpp 26 // 27 //-------------------------------------------------------trans_single_path 28 class trans_single_path 29 { 30 enum status_e 31 { 32 initial, 33 making_path, 34 ready 35 }; 36 37 public: 38 typedef vertex_sequence<vertex_dist, 6> vertex_storage; 39 40 trans_single_path(); 41 42 //-------------------------------------------------------------------- base_length(double v)43 void base_length(double v) { m_base_length = v; } base_length()44 double base_length() const { return m_base_length; } 45 46 //-------------------------------------------------------------------- preserve_x_scale(bool f)47 void preserve_x_scale(bool f) { m_preserve_x_scale = f; } preserve_x_scale()48 bool preserve_x_scale() const { return m_preserve_x_scale; } 49 50 //-------------------------------------------------------------------- 51 void reset(); 52 void move_to(double x, double y); 53 void line_to(double x, double y); 54 void finalize_path(); 55 56 //-------------------------------------------------------------------- 57 template<class VertexSource> 58 void add_path(VertexSource& vs, unsigned path_id=0) 59 { 60 double x; 61 double y; 62 63 unsigned cmd; 64 vs.rewind(path_id); 65 while(!is_stop(cmd = vs.vertex(&x, &y))) 66 { 67 if(is_move_to(cmd)) 68 { 69 move_to(x, y); 70 } 71 else 72 { 73 if(is_vertex(cmd)) 74 { 75 line_to(x, y); 76 } 77 } 78 } 79 finalize_path(); 80 } 81 82 //-------------------------------------------------------------------- 83 double total_length() const; 84 void transform(double *x, double *y) const; 85 86 private: 87 vertex_storage m_src_vertices; 88 double m_base_length; 89 double m_kindex; 90 status_e m_status; 91 bool m_preserve_x_scale; 92 }; 93 94 95 } 96 97 #endif 98