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73 lines
2.0 KiB
73 lines
2.0 KiB
//---------------------------------------------------------------------------- |
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// Anti-Grain Geometry - Version 2.4 |
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// Copyright (C) 2002-2005 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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// Arc vertex generator |
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// |
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//---------------------------------------------------------------------------- |
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#ifndef AGG_ARC_INCLUDED |
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#define AGG_ARC_INCLUDED |
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#include "agg_basics.h" |
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namespace agg |
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{ |
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//=====================================================================arc |
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// |
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// See Implementation agg_arc.cpp |
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// |
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class arc |
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{ |
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public: |
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arc() : m_scale(1.0), m_initialized(false) {} |
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arc(double x, double y, |
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double rx, double ry, |
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double a1, double a2, |
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bool ccw=true); |
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void init(double x, double y, |
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double rx, double ry, |
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double a1, double a2, |
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bool ccw=true); |
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void approximation_scale(double s); |
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double approximation_scale() const { return m_scale; } |
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void rewind(unsigned); |
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unsigned vertex(double* x, double* y); |
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private: |
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void normalize(double a1, double a2, bool ccw); |
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double m_x; |
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double m_y; |
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double m_rx; |
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double m_ry; |
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double m_angle; |
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double m_start; |
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double m_end; |
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double m_scale; |
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double m_da; |
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bool m_ccw; |
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bool m_initialized; |
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unsigned m_path_cmd; |
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}; |
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} |
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#endif
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