//---------------------------------------------------------------------------- // Anti-Grain Geometry (AGG) - Version 2.5 // A high quality rendering engine for C++ // Copyright (C) 2002-2006 Maxim Shemanarev // Contact: mcseem@antigrain.com // mcseemagg@yahoo.com // http://antigrain.com // // AGG is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public License // as published by the Free Software Foundation; either version 2 // of the License, or (at your option) any later version. // // AGG is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with AGG; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, // MA 02110-1301, USA. //---------------------------------------------------------------------------- #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 |