TernaryConstants.cpp

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/****************************************************************************
** Copyright (C) 2001-2011 Klaralvdalens Datakonsult AB.  All rights reserved.
**
** This file is part of the KD Chart library.
**
** Licensees holding valid commercial KD Chart licenses may use this file in
** accordance with the KD Chart Commercial License Agreement provided with
** the Software.
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**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 and version 3 as published by the
** Free Software Foundation and appearing in the file LICENSE.GPL.txt included.
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#include "TernaryConstants.h"

#include <cmath>

using namespace std;

extern const double Sqrt3 = sqrt( 3.0 );
extern const double TriangleWidth = 1.0;
extern const double TriangleHeight = 0.5 * Sqrt3;
extern const QPointF TriangleTop( 0.5, TriangleHeight );
extern const QPointF TriangleBottomLeft( 0.0, 0.0 );
extern const QPointF TriangleBottomRight( 1.0, 0.0 );
extern const QPointF AxisVector_C_A( TriangleTop - TriangleBottomRight );
extern const QPointF Norm_C_A( -AxisVector_C_A.y(), AxisVector_C_A.x() );
extern const QPointF AxisVector_B_A( TriangleTop );
extern const QPointF Norm_B_A( -AxisVector_B_A.y(), AxisVector_B_A.x() );
extern const QPointF AxisVector_B_C( TriangleBottomRight );
extern const QPointF Norm_B_C( -AxisVector_B_C.y(), AxisVector_B_C.x() );

extern const double RelMarkerLength = 0.03 * TriangleWidth;
extern const QPointF FullMarkerDistanceBC( RelMarkerLength * Norm_B_C );
extern const QPointF FullMarkerDistanceAC( -RelMarkerLength * Norm_C_A );
extern const QPointF FullMarkerDistanceBA( RelMarkerLength * Norm_B_A );