From ce599e4f9f94b4eb00c1b5edb85bce5431ab3df2 Mon Sep 17 00:00:00 2001 From: toma Date: Wed, 25 Nov 2009 17:56:58 +0000 Subject: 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 --- kig/objects/curve_imp.h | 62 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 kig/objects/curve_imp.h (limited to 'kig/objects/curve_imp.h') diff --git a/kig/objects/curve_imp.h b/kig/objects/curve_imp.h new file mode 100644 index 00000000..3a33a722 --- /dev/null +++ b/kig/objects/curve_imp.h @@ -0,0 +1,62 @@ +// Copyright (C) 2002 Dominique Devriese + +// 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_OBJECTS_CURVE_IMP_H +#define KIG_OBJECTS_CURVE_IMP_H + +#include "object_imp.h" + +/** + * This class represents a curve: something which is composed of + * points, like a line, a circle, a locus... + */ +class CurveImp + : public ObjectImp +{ +public: + typedef ObjectImp Parent; + + /** + * Returns the ObjectImpType representing the CurveImp type. + */ + static const ObjectImpType* stype(); + + Coordinate attachPoint() const; + + // param is between 0 and 1. Note that 0 and 1 should be the + // end-points. E.g. for a Line, getPoint(0) returns a more or less + // infinite point. getPoint(0.5) should return the point in the + // middle. + virtual double getParam( const Coordinate& point, const KigDocument& ) const = 0; + // this should be the inverse function of getPoint(). + // Note that it should also do something reasonable when p is not on + // the curve. You can return an invalid Coordinate( + // Coordinate::invalidCoord() ) if you need to in some cases. + virtual const Coordinate getPoint( double param, const KigDocument& ) const = 0; + + virtual CurveImp* copy() const = 0; + + /** + * Return whether this Curve contains the given point. This is + * implemented as a numerical approximation. Implementations + * can/should use the value test_threshold in common.h as a + * threshold value. + */ + virtual bool containsPoint( const Coordinate& p, const KigDocument& ) const = 0; +}; + +#endif -- cgit v1.2.1