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+/*
+ Copyright (C) 2003 Nikolas Zimmermann <wildfox@kde.org>
+ This file is part of the KDE project
+
+ 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
+ aint 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 T2P_BEZIERPATH_H
+#define T2P_BEZIERPATH_H
+
+#include <list>
+
+namespace T2P
+{
+ class Point;
+ class BezierPath
+ {
+ public:
+ BezierPath() { }
+ virtual ~BezierPath() { }
+
+ /**
+ * Calculates the arclength from p0 to the point parametrized by 0 <= t <= 1.
+ */
+ virtual double length(double t = 1.0) = 0;
+
+ /**
+ * Calculates the point, the tangent vector and the normal vector for
+ * 0 <= t <= 1. The tangent vector and the normal vector are
+ * normalized (length=1).
+ */
+ virtual void pointTangentNormalAt(double t, Point *p = 0, Point *tn = 0, Point *n = 0) = 0;
+
+ /**
+ * Calculates the axis-aligned bounding box.
+ */
+ virtual void boundingBox(Point *topLeft, Point *bottomRight) = 0;
+ };
+}
+
+#endif
+
+// vim:ts=4:noet