//---------------------------------------------------------------------------- // Anti-Grain Geometry - Version 2.3 // Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com) // // Permission to copy, use, modify, sell and distribute this software // is granted provided this copyright notice appears in all copies. // This software is provided "as is" without express or implied // warranty, and with no claim as to its suitability for any purpose. // //---------------------------------------------------------------------------- // Contact: mcseem@antigrain.com // mcseemagg@yahoo.com // http://www.antigrain.com //---------------------------------------------------------------------------- // // Line dash generator // //---------------------------------------------------------------------------- #ifndef AGG_VCGEN_DASH_INCLUDED #define AGG_VCGEN_DASH_INCLUDED #include "agg_basics.h" #include "agg_vertex_sequence.h" namespace agg { class vcgen_dash { enum max_dashes_e { max_dashes = 32 }; enum status_e { initial, ready, polyline, stop }; public: typedef vertex_sequence<vertex_dist, 6> vertex_storage; vcgen_dash(); void remove_all_dashes(); void add_dash(float dash_len, float gap_len); void dash_start(float ds); void shorten(float s) { m_shorten = s; } double shorten() const { return m_shorten; } void remove_all(); void add_vertex(float x, float y, unsigned cmd); void rewind(unsigned path_id); unsigned vertex(float* x, float* y); private: vcgen_dash(const vcgen_dash&); const vcgen_dash& operator = (const vcgen_dash&); void calc_dash_start(float ds); float m_dashes[max_dashes]; float m_total_dash_len; unsigned m_num_dashes; float m_dash_start; float m_shorten; float m_curr_dash_start; unsigned m_curr_dash; float m_curr_rest; const vertex_dist* m_v1; const vertex_dist* m_v2; vertex_storage m_src_vertices; unsigned m_closed; status_e m_status; unsigned m_src_vertex; }; } #endif