//---------------------------------------------------------------------------- // Anti-Grain Geometry - Version 2.4 // 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 //---------------------------------------------------------------------------- #ifndef AGG_VCGEN_SMOOTH_POLY1_INCLUDED #define AGG_VCGEN_SMOOTH_POLY1_INCLUDED #include "agg_basics.h" #include "agg_vertex_sequence.h" namespace agg { //======================================================vcgen_smooth_poly1 // // See Implementation agg_vcgen_smooth_poly1.cpp // Smooth polygon generator // //------------------------------------------------------------------------ class vcgen_smooth_poly1 { enum status_e { initial, ready, polygon, ctrl_b, ctrl_e, ctrl1, ctrl2, end_poly, stop }; public: typedef vertex_sequence<vertex_dist, 6> vertex_storage; vcgen_smooth_poly1(); void smooth_value(double v) { m_smooth_value = v * 0.5; } double smooth_value() const { return m_smooth_value * 2.0; } // Vertex Generator Interface void remove_all(); void add_vertex(double x, double y, unsigned cmd); // Vertex Source Interface void rewind(unsigned path_id); unsigned vertex(double* x, double* y); private: vcgen_smooth_poly1(const vcgen_smooth_poly1&); const vcgen_smooth_poly1& operator = (const vcgen_smooth_poly1&); void calculate(const vertex_dist& v0, const vertex_dist& v1, const vertex_dist& v2, const vertex_dist& v3); vertex_storage m_src_vertices; double m_smooth_value; unsigned m_closed; status_e m_status; unsigned m_src_vertex; double m_ctrl1_x; double m_ctrl1_y; double m_ctrl2_x; double m_ctrl2_y; }; } #endif