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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/objects/curve_imp.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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diff --git a/kig/objects/curve_imp.h b/kig/objects/curve_imp.h
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+// Copyright (C) 2002 Dominique Devriese <devriese@kde.org>
+
+// 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