39241fe228
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9933 a95241bf-73f2-0310-859d-f6bbb57e9c96
151 lines
4.2 KiB
C++
151 lines
4.2 KiB
C++
//----------------------------------------------------------------------------
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// Anti-Grain Geometry - Version 2.2
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// Copyright (C) 2002-2004 Maxim Shemanarev (http://www.antigrain.com)
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//
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// Permission to copy, use, modify, sell and distribute this software
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// is granted provided this copyright notice appears in all copies.
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// This software is provided "as is" without express or implied
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// warranty, and with no claim as to its suitability for any purpose.
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//
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//----------------------------------------------------------------------------
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// Contact: mcseem@antigrain.com
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// mcseemagg@yahoo.com
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// http://www.antigrain.com
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//----------------------------------------------------------------------------
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//
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// classes curve3 and curve4
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//
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//----------------------------------------------------------------------------
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#ifndef AGG_CURVES_INCLUDED
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#define AGG_CURVES_INCLUDED
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#include "agg_basics.h"
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#include "agg_vertex_iterator.h"
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namespace agg
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{
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// See Implemantation agg_curves.cpp
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//------------------------------------------------------------------curve3
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class curve3
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{
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public:
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curve3() :
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m_num_steps(0), m_step(0), m_scale(1.0) { }
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curve3(double x1, double y1,
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double x2, double y2,
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double x3, double y3) :
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m_num_steps(0), m_step(0), m_scale(1.0)
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{
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init(x1, y1, x2, y2, x3, y3);
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}
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void reset() { m_num_steps = 0; m_step = -1; }
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void init(double x1, double y1,
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double x2, double y2,
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double x3, double y3);
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void approximation_scale(double s) { m_scale = s; }
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double approximation_scale() const { return m_scale; }
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void rewind(unsigned id);
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unsigned vertex(double* x, double* y);
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typedef curve3 source_type;
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typedef vertex_iterator<source_type> iterator;
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iterator begin(unsigned id) { return iterator(*this, id); }
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iterator end() { return iterator(path_cmd_stop); }
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private:
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int m_num_steps;
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int m_step;
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double m_scale;
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double m_start_x;
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double m_start_y;
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double m_end_x;
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double m_end_y;
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double m_fx;
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double m_fy;
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double m_dfx;
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double m_dfy;
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double m_ddfx;
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double m_ddfy;
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double m_saved_fx;
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double m_saved_fy;
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double m_saved_dfx;
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double m_saved_dfy;
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};
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//-----------------------------------------------------------------curve4
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class curve4
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{
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public:
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curve4() :
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m_num_steps(0), m_step(0), m_scale(1.0) { }
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curve4(double x1, double y1,
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double x2, double y2,
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double x3, double y3,
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double x4, double y4) :
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m_num_steps(0), m_step(0), m_scale(1.0)
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{
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init(x1, y1, x2, y2, x3, y3, x4, y4);
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}
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void reset() { m_num_steps = 0; m_step = -1; }
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void init(double x1, double y1,
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double x2, double y2,
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double x3, double y3,
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double x4, double y4);
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void approximation_scale(double s) { m_scale = s; }
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double approximation_scale() const { return m_scale; }
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void rewind(unsigned id);
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unsigned vertex(double* x, double* y);
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typedef curve4 source_type;
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typedef vertex_iterator<source_type> iterator;
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iterator begin(unsigned id) { return iterator(*this, id); }
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iterator end() { return iterator(path_cmd_stop); }
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private:
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int m_num_steps;
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int m_step;
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double m_scale;
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double m_start_x;
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double m_start_y;
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double m_end_x;
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double m_end_y;
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double m_fx;
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double m_fy;
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double m_dfx;
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double m_dfy;
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double m_ddfx;
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double m_ddfy;
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double m_dddfx;
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double m_dddfy;
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double m_saved_fx;
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double m_saved_fy;
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double m_saved_dfx;
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double m_saved_dfy;
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double m_saved_ddfx;
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double m_saved_ddfy;
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};
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}
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#endif
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