48 lines
2.1 KiB
C++
48 lines
2.1 KiB
C++
// Arc.h
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/*==============================
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Copyright (c) 2011-2015 Dan Heeks
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. The name of the author may not be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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==============================*/
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#pragma once
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#include "Point.h"
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class CArc{
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public:
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Point m_s;
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Point m_e;
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Point m_c;
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bool m_dir; // true - anti-clockwise, false - clockwise
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int m_user_data;
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CArc():m_dir(true), m_user_data(0){}
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CArc(const Point& s, const Point& e, const Point& c, bool dir, int user_data):m_s(s), m_e(e), m_c(c), m_dir(dir), m_user_data(user_data){}
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void SetDirWithPoint(const Point& p); // set m_dir, such that this point lies between m_s and m_e
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double IncludedAngle()const; // always > 0
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bool AlmostALine()const;
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Point MidParam(double param)const;
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void GetSegments(void(*callbackfunc)(const double *p), double pixels_per_mm, bool want_start_point = true)const;
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}; |