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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commitce599e4f9f94b4eb00c1b5edb85bce5431ab3df2 (patch)
treed3bb9f5d25a2dc09ca81adecf39621d871534297 /kig/misc/goniometry.h
downloadtdeedu-ce599e4f9f94b4eb00c1b5edb85bce5431ab3df2.tar.gz
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Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdeedu@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
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+// This file is part of Kig, a KDE program for Interactive Geometry...
+// Copyright (C) 2004 Dominique Devriese <devriese@kde.org>
+// Copyright (C) 2004 Pino Toscano <toscano.pino@tiscali.it>
+
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+
+// This program 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 General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+// 02110-1301, USA.
+
+#ifndef KIG_MISC_GONIOMETRY_H
+#define KIG_MISC_GONIOMETRY_H
+
+#include <qstringlist.h>
+
+/**
+ * Manage an angle and convert it from/to other goniometric systems.
+ */
+class Goniometry
+{
+public:
+ enum System { Deg, Rad, Grad };
+ Goniometry();
+ Goniometry( double value, Goniometry::System system );
+ ~Goniometry();
+ void setValue( double value );
+ const double value() const;
+ /**
+ * Set the system of the current angle to \p system, but it doesn't
+ * convert the value to the new system.
+ *
+ * \see convertTo()
+ */
+ void setSystem( Goniometry::System system );
+ /**
+ * Set the system of the current angle to \p system and convert the
+ * value to the new system using \ref convert().
+ *
+ * \see setSystem()
+ */
+ void convertTo( Goniometry::System system );
+ const Goniometry::System system() const;
+ double getValue( Goniometry::System system );
+ /**
+ * The most useful method of this class: convert the specified
+ * \p angle from the system \p from to the system \p to.
+ */
+ static double convert( const double angle, const Goniometry::System from, const Goniometry::System to );
+ /**
+ * Get a list of the supported goniometric systems.
+ */
+ static QStringList systemList();
+ static Goniometry::System intToSystem( const int index );
+
+ Goniometry& operator= ( const Goniometry& g );
+
+private:
+ double mvalue;
+ typedef Goniometry::System goniosys;
+ goniosys msys;
+};
+
+#endif