Added old abandoned KDE3 version of koffice

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/koffice@1077364 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 109 insertions, 0 deletions

diff --git a/karbon/core/vglobal.h b/karbon/core/vglobal.h
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+++ b/karbon/core/vglobal.h
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+/* This file is part of the KDE project
+   Copyright (C) 2001, The Karbon Developers
+   Copyright (C) 2002, The Karbon Developers
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public License
+   along with this library; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+*/
+
+#ifndef __VGLOBAL_H__
+#define __VGLOBAL_H__
+
+#include <kglobal.h>
+
+// define some often used mathematical constants et al:
+
+// TODO: optimize those values.
+
+namespace VGlobal
+{
+	const double pi			=  3.14159265358979323846;	// pi
+	const double twopi		=  6.28318530717958647692;	// 2pi
+	const double pi_2		=  1.57079632679489661923;	// pi/2
+	const double pi_180		=  0.01745329251994329576;	// pi/180
+	const double one_pi_180	= 57.29577951308232087684;	// 180/pi
+	const double sqrt2		=  1.41421356237309504880;	// sqrt(2)
+	const double one_3		=  0.33333333333333333333;	// 1/3
+	const double two_3		=  0.66666666666666666667;	// 2/3
+	const double one_6		=  0.16666666666666666667;	// 1/6
+	const double one_7		=  0.14285714285714285714;	// 1/7
+
+	/**
+	 * Constants used to decide if a number is equal zero or nearly the same
+	 * as another number.
+	 */
+	const double veryBigNumber = 1.0e8;
+	const double verySmallNumber = 1.0e-8;
+
+	/**
+	 * A bezier with this flatness is considered "flat". Used in subdividing.
+	 */
+	const double flatnessTolerance = 0.01;
+
+	/**
+	 * A tolerance used to approximate bezier lengths. If the relative difference
+	 * between chordlength and polylength (length of the controlpolygon) is smaller
+	 * than this value, the length of the bezier is 1/2 chordlength + 1/2 polylength.
+	 */
+	const double lengthTolerance = 0.005;
+
+	/**
+	 * A tolerance used to calculate param t on a segment at a given arc
+	 * length (counting from t=0).
+	 * If the relative difference between a length approximation and the given
+	 * length is smaller than this value, they are assumed to be identical.
+	 */
+	const double paramLengthTolerance = 0.001;
+
+	/**
+	 * A range for KoPoint::isNear() check, to decide if a KoPoint "is the same"
+	 * as another.
+	 */
+	const double isNearRange = 0.001;
+
+	/**
+	 * A tolerance for multiplying normalized (length=1) vectors. A result of
+	 * >= parallelTolerance indicates parallel vectors.
+	 */
+	const double parallelTolerance = 0.99;
+
+	/**
+	 * Returns the sign of paramater a.
+	 */
+	inline int sign( double a )
+	{
+		return a < 0.0
+			   ? -1
+			   : 1;
+	}
+
+	/**
+	 * Calculates the binomial coefficient n! / ( k! * ( n - k)! ).
+	 */
+	int binomialCoeff( unsigned n, unsigned k );
+
+	/**
+	 * Calculates the value ln( n! ).
+	 */
+	double factorialLn( unsigned n );
+
+	/**
+	 * Calculates the value ln| Gamma(x) | for x > 0.
+	 */
+	double gammaLn( double x );
+}
+
+#endif
+