| |
| //---------------------------------------------------------------------------- |
| // 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 |
