59 lines
1.6 KiB
C++
59 lines
1.6 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2021 Olive Team
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#ifndef BEZIER_H
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#define BEZIER_H
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#include <QPointF>
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#include "common/define.h"
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namespace olive {
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class Bezier
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{
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public:
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static double QuadraticXtoT(double x, double a, double b, double c);
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static double QuadraticTtoY(double a, double b, double c, double t);
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static double QuadraticXtoY(double x, const QPointF &a, const QPointF &b, const QPointF &c)
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{
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return QuadraticTtoY(a.y(), b.y(), c.y(), QuadraticXtoT(x, a.x(), b.x(), c.x()));
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}
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static double CubicXtoT(double x, double a, double b, double c, double d);
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static double CubicTtoY(double a, double b, double c, double d, double t);
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static double CubicXtoY(double x, const QPointF &a, const QPointF &b, const QPointF &c, const QPointF &d)
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{
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return CubicTtoY(a.y(), b.y(), c.y(), d.y(), CubicXtoT(x, a.x(), b.x(), c.x(), d.x()));
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}
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private:
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static double CalculateTFromX(bool cubic, double x, double a, double b, double c, double d);
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};
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}
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#endif // BEZIER_H
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