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96 lines
3 KiB
C++
96 lines
3 KiB
C++
//----------------------------------------------------------------------------
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// Anti-Grain Geometry (AGG) - Version 2.5
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// A high quality rendering engine for C++
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// Copyright (C) 2002-2006 Maxim Shemanarev
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// Contact: mcseem@antigrain.com
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// mcseemagg@yahoo.com
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// http://antigrain.com
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//
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// AGG is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// AGG is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with AGG; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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// MA 02110-1301, USA.
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//----------------------------------------------------------------------------
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#ifndef AGG_VCGEN_SMOOTH_POLY1_INCLUDED
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#define AGG_VCGEN_SMOOTH_POLY1_INCLUDED
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#include "agg_basics.h"
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#include "agg_vertex_sequence.h"
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namespace agg
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{
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//======================================================vcgen_smooth_poly1
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//
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// See Implementation agg_vcgen_smooth_poly1.cpp
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// Smooth polygon generator
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//
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//------------------------------------------------------------------------
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class vcgen_smooth_poly1
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{
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enum status_e
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{
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initial,
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ready,
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polygon,
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ctrl_b,
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ctrl_e,
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ctrl1,
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ctrl2,
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end_poly,
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stop
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};
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public:
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typedef vertex_sequence<vertex_dist, 6> vertex_storage;
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vcgen_smooth_poly1();
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void smooth_value(double v) { m_smooth_value = v * 0.5; }
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double smooth_value() const { return m_smooth_value * 2.0; }
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// Vertex Generator Interface
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void remove_all();
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void add_vertex(double x, double y, unsigned cmd);
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// Vertex Source Interface
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void rewind(unsigned path_id);
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unsigned vertex(double* x, double* y);
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private:
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vcgen_smooth_poly1(const vcgen_smooth_poly1&);
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const vcgen_smooth_poly1& operator = (const vcgen_smooth_poly1&);
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void calculate(const vertex_dist& v0,
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const vertex_dist& v1,
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const vertex_dist& v2,
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const vertex_dist& v3);
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vertex_storage m_src_vertices;
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double m_smooth_value;
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unsigned m_closed;
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status_e m_status;
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unsigned m_src_vertex;
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double m_ctrl1_x;
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double m_ctrl1_y;
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double m_ctrl2_x;
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double m_ctrl2_y;
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};
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}
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#endif
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