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55 lines
1.6 KiB
55 lines
1.6 KiB
/*
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Copyright (C) 2003 Nikolas Zimmermann <wildfox@kde.org>
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This file is part of the KDE project
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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aint with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifndef T2P_BEZIERPATH_H
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#define T2P_BEZIERPATH_H
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#include <list>
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namespace T2P
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{
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class Point;
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class BezierPath
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{
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public:
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BezierPath() { }
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virtual ~BezierPath() { }
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/**
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* Calculates the arclength from p0 to the point parametrized by 0 <= t <= 1.
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*/
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virtual double length(double t = 1.0) = 0;
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/**
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* Calculates the point, the tangent vector and the normal vector for
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* 0 <= t <= 1. The tangent vector and the normal vector are
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* normalized (length=1).
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*/
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virtual void pointTangentNormalAt(double t, Point *p = 0, Point *tn = 0, Point *n = 0) = 0;
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/**
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* Calculates the axis-aligned bounding box.
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*/
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virtual void boundingBox(Point *topLeft, Point *bottomRight) = 0;
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};
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}
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#endif
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