624 lines
22 KiB
C++
624 lines
22 KiB
C++
/************************************************************************
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**
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** @file vspline.cpp
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** @author Roman Telezhynskyi <dismine(at)gmail.com>
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** @date November 15, 2013
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**
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** @brief
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** @copyright
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** This source code is part of the Valentina project, a pattern making
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** program, whose allow create and modeling patterns of clothing.
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** Copyright (C) 2013-2015 Valentina project
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** <https://gitlab.com/smart-pattern/valentina> All Rights Reserved.
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**
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** Valentina 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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**
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** Valentina 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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**
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** You should have received a copy of the GNU General Public License
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** along with Valentina. If not, see <http://www.gnu.org/licenses/>.
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**
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*************************************************************************/
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#include "vspline.h"
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#include <QJsonObject>
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#include <QLineF>
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#include "../vmisc/vmath.h"
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#include "vabstractcurve.h"
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#include "vspline_p.h"
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#if QT_VERSION < QT_VERSION_CHECK(6, 4, 0)
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#include "../vmisc/compatibility.h"
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#endif
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using namespace Qt::Literals::StringLiterals;
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VSpline default constructor
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*/
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VSpline::VSpline()
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: VAbstractCubicBezier(GOType::Spline),
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d(new VSplineData)
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{
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}
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//---------------------------------------------------------------------------------------------------------------------
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COPY_CONSTRUCTOR_IMPL_2(VSpline, VAbstractCubicBezier)
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VSpline constructor.
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* @param p1 first point spline.
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* @param p4 last point spline.
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* @param angle1 angle from first point to first control point.
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* @param angle2 angle from second point to second control point.
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* @param kCurve coefficient of curvature spline.
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* @param kAsm1 coefficient of length first control line.
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* @param kAsm2 coefficient of length second control line.
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*/
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VSpline::VSpline(const VPointF &p1, const VPointF &p4, qreal angle1, qreal angle2, qreal kAsm1, qreal kAsm2,
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qreal kCurve, quint32 idObject, Draw mode)
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: VAbstractCubicBezier(GOType::Spline, idObject, mode),
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d(new VSplineData(p1, p4, angle1, angle2, kAsm1, kAsm2, kCurve))
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{
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CreateName();
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VSpline constructor.
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* @param p1 first point spline.
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* @param p2 first control point.
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* @param p3 second control point.
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* @param p4 second point spline.
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*/
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VSpline::VSpline(const VPointF &p1, const QPointF &p2, const QPointF &p3, const VPointF &p4, quint32 idObject,
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Draw mode)
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: VAbstractCubicBezier(GOType::Spline, idObject, mode),
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d(new VSplineData(p1, p2, p3, p4))
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{
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CreateName();
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief VSpline constructor
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* @param p1 first point spline.
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* @param p4 first control point.
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* @param angle1 angle from first point to first control point.
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* @param angle1Formula formula angle from first point to first control point.
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* @param angle2 angle from second point to second control point.
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* @param angle2Formula formula angle from second point to second control point.
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* @param c1Length length from first point to first control point.
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* @param c1LengthFormula formula length from first point to first control point.
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* @param c2Length length from second point to first control point.
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* @param c2LengthFormula formula length from second point to first control point.
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*/
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VSpline::VSpline(const VPointF &p1, const VPointF &p4, qreal angle1, const QString &angle1Formula, qreal angle2,
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const QString &angle2Formula, qreal c1Length, const QString &c1LengthFormula, qreal c2Length,
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const QString &c2LengthFormula, quint32 idObject, Draw mode)
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: VAbstractCubicBezier(GOType::Spline, idObject, mode),
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d(new VSplineData(p1, p4, angle1, angle1Formula, angle2, angle2Formula, c1Length, c1LengthFormula, c2Length,
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c2LengthFormula))
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{
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CreateName();
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}
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//---------------------------------------------------------------------------------------------------------------------
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auto VSpline::Rotate(const QPointF &originPoint, qreal degrees, const QString &prefix) const -> VSpline
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{
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const VPointF p1 = GetP1().Rotate(originPoint, degrees);
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const VPointF p4 = GetP4().Rotate(originPoint, degrees);
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const QPointF p2 = VPointF::RotatePF(originPoint, static_cast<QPointF>(GetP2()), degrees);
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const QPointF p3 = VPointF::RotatePF(originPoint, static_cast<QPointF>(GetP3()), degrees);
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VSpline spl(p1, p2, p3, p4);
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spl.setName(name() + prefix);
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if (not GetAliasSuffix().isEmpty())
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{
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spl.SetAliasSuffix(GetAliasSuffix() + prefix);
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}
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spl.SetColor(GetColor());
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spl.SetPenStyle(GetPenStyle());
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spl.SetApproximationScale(GetApproximationScale());
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return spl;
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}
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//---------------------------------------------------------------------------------------------------------------------
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auto VSpline::Flip(const QLineF &axis, const QString &prefix) const -> VSpline
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{
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const VPointF p1 = GetP1().Flip(axis);
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const VPointF p4 = GetP4().Flip(axis);
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const QPointF p2 = VPointF::FlipPF(axis, static_cast<QPointF>(GetP2()));
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const QPointF p3 = VPointF::FlipPF(axis, static_cast<QPointF>(GetP3()));
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VSpline spl(p1, p2, p3, p4);
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spl.setName(name() + prefix);
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if (not GetAliasSuffix().isEmpty())
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{
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spl.SetAliasSuffix(GetAliasSuffix() + prefix);
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}
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spl.SetColor(GetColor());
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spl.SetPenStyle(GetPenStyle());
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spl.SetApproximationScale(GetApproximationScale());
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return spl;
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}
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//---------------------------------------------------------------------------------------------------------------------
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auto VSpline::Move(qreal length, qreal angle, const QString &prefix) const -> VSpline
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{
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const VPointF p1 = GetP1().Move(length, angle);
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const VPointF p4 = GetP4().Move(length, angle);
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const QPointF p2 = VPointF::MovePF(static_cast<QPointF>(GetP2()), length, angle);
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const QPointF p3 = VPointF::MovePF(static_cast<QPointF>(GetP3()), length, angle);
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VSpline spl(p1, p2, p3, p4);
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spl.setName(name() + prefix);
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if (not GetAliasSuffix().isEmpty())
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{
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spl.SetAliasSuffix(GetAliasSuffix() + prefix);
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}
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spl.SetColor(GetColor());
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spl.SetPenStyle(GetPenStyle());
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spl.SetApproximationScale(GetApproximationScale());
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return spl;
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}
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//---------------------------------------------------------------------------------------------------------------------
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VSpline::~VSpline() = default;
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief GetLength return length of spline.
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* @return length.
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*/
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auto VSpline::GetLength() const -> qreal
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{
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return LengthBezier(static_cast<QPointF>(GetP1()), static_cast<QPointF>(GetP2()), static_cast<QPointF>(GetP3()),
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static_cast<QPointF>(GetP4()), GetApproximationScale());
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}
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//---------------------------------------------------------------------------------------------------------------------
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auto VSpline::CutSpline(qreal length, VSpline &spl1, VSpline &spl2, const QString &pointName) const -> QPointF
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{
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QPointF spl1p2;
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QPointF spl1p3;
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QPointF spl2p2;
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QPointF spl2p3;
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const QPointF cutPoint = CutSpline(length, spl1p2, spl1p3, spl2p2, spl2p3, pointName);
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spl1 = VSpline(GetP1(), spl1p2, spl1p3, VPointF(cutPoint));
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spl1.SetApproximationScale(GetApproximationScale());
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spl2 = VSpline(VPointF(cutPoint), spl2p2, spl2p3, GetP4());
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spl2.SetApproximationScale(GetApproximationScale());
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return cutPoint;
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief GetPoints return list with spline points.
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* @return list of points.
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*/
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auto VSpline::GetPoints() const -> QVector<QPointF>
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{
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return GetCubicBezierPoints(static_cast<QPointF>(GetP1()), static_cast<QPointF>(GetP2()),
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static_cast<QPointF>(GetP3()), static_cast<QPointF>(GetP4()), GetApproximationScale());
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief SplinePoints return list with spline points.
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* @param p1 first spline point.
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* @param p4 last spline point.
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* @param angle1 angle from first point to first control point.
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* @param angle2 angle from second point to second control point.
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* @param kAsm1 coefficient of length first control line.
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* @param kAsm2 coefficient of length second control line.
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* @param kCurve coefficient of curvature spline.
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* @return list with spline points.
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*/
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// cppcheck-suppress unusedFunction
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auto VSpline::SplinePoints(const QPointF &p1, const QPointF &p4, qreal angle1, qreal angle2, qreal kAsm1, qreal kAsm2,
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qreal kCurve, qreal approximationScale) -> QVector<QPointF>
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{
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QLineF p1pX(p1.x(), p1.y(), p1.x() + 100, p1.y());
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p1pX.setAngle(angle1);
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qreal L = 0, radius = 0, angle = 90;
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radius = QLineF(QPointF(p1.x(), p4.y()), p4).length();
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L = kCurve * radius * 4 / 3 * tan(angle * M_PI_4 / 180.0);
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QLineF p1p2(p1.x(), p1.y(), p1.x() + L * kAsm1, p1.y());
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p1p2.setAngle(angle1);
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QLineF p4p3(p4.x(), p4.y(), p4.x() + L * kAsm2, p4.y());
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p4p3.setAngle(angle2);
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QPointF const p2 = p1p2.p2();
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QPointF const p3 = p4p3.p2();
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return GetCubicBezierPoints(p1, p2, p3, p4, approximationScale);
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}
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//---------------------------------------------------------------------------------------------------------------------
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auto VSpline::operator=(const VSpline &spline) -> VSpline &
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{
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if (&spline == this)
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{
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return *this;
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}
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VAbstractCubicBezier::operator=(spline);
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d = spline.d;
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return *this;
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}
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//---------------------------------------------------------------------------------------------------------------------
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VSpline::VSpline(VSpline &&spline) noexcept
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: VAbstractCubicBezier(std::move(spline)),
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d(std::move(spline.d)) // NOLINT(bugprone-use-after-move)
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{
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}
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//---------------------------------------------------------------------------------------------------------------------
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auto VSpline::operator=(VSpline &&spline) noexcept -> VSpline &
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{
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VAbstractCubicBezier::operator=(spline);
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std::swap(d, spline.d);
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return *this;
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief GetP1 return first spline point.
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* @return first point.
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*/
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auto VSpline::GetP1() const -> VPointF
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{
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return d->p1;
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VSpline::SetP1(const VPointF &p)
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{
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d->p1 = p;
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief GetP2 return first control point.
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* @return first control point.
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*/
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auto VSpline::GetP2() const -> VPointF
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{
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QLineF p1p2(d->p1.x(), d->p1.y(), d->p1.x() + d->c1Length, d->p1.y());
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p1p2.setAngle(d->angle1);
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return VPointF(p1p2.p2());
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief GetP3 return second control point.
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* @return second control point.
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*/
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auto VSpline::GetP3() const -> VPointF
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{
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QLineF p4p3(d->p4.x(), d->p4.y(), d->p4.x() + d->c2Length, d->p4.y());
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p4p3.setAngle(d->angle2);
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return VPointF(p4p3.p2());
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief GetP4 return last spline point.
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* @return остання точка сплайну.
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*/
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auto VSpline::GetP4() const -> VPointF
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{
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return d->p4;
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VSpline::SetP4(const VPointF &p)
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{
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d->p4 = p;
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief GetAngle1 return first angle control line.
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* @return angle.
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*/
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auto VSpline::GetStartAngle() const -> qreal
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{
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return d->angle1;
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief GetAngle2 return second angle control line.
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* @return angle.
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*/
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auto VSpline::GetEndAngle() const -> qreal
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{
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return d->angle2;
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}
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//---------------------------------------------------------------------------------------------------------------------
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auto VSpline::GetStartAngleFormula() const -> QString
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{
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return d->angle1F;
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}
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//---------------------------------------------------------------------------------------------------------------------
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auto VSpline::GetEndAngleFormula() const -> QString
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{
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return d->angle2F;
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VSpline::SetStartAngle(qreal angle, const QString &formula)
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{
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d->angle1 = angle;
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d->angle1F = formula;
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VSpline::SetEndAngle(qreal angle, const QString &formula)
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{
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d->angle2 = angle;
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d->angle2F = formula;
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}
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//---------------------------------------------------------------------------------------------------------------------
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auto VSpline::GetC1Length() const -> qreal
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{
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return d->c1Length;
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}
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//---------------------------------------------------------------------------------------------------------------------
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auto VSpline::GetC2Length() const -> qreal
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{
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return d->c2Length;
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}
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//---------------------------------------------------------------------------------------------------------------------
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auto VSpline::GetC1LengthFormula() const -> QString
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{
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return d->c1LengthF;
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}
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//---------------------------------------------------------------------------------------------------------------------
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auto VSpline::GetC2LengthFormula() const -> QString
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{
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return d->c2LengthF;
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VSpline::SetC1Length(qreal length, const QString &formula)
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{
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d->c1Length = length;
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d->c1LengthF = formula;
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VSpline::SetC2Length(qreal length, const QString &formula)
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{
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d->c2Length = length;
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d->c2LengthF = formula;
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief GetKasm1 return coefficient of length first control line.
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* @return coefficient.
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*/
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auto VSpline::GetKasm1() const -> qreal
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{
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return QLineF(static_cast<QPointF>(d->p1), static_cast<QPointF>(GetP2())).length() /
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VSplineData::GetL(static_cast<QPointF>(d->p1), static_cast<QPointF>(d->p4), d->kCurve);
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief GetKasm2 return coefficient of length second control line.
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* @return coefficient.
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*/
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auto VSpline::GetKasm2() const -> qreal
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{
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return QLineF(static_cast<QPointF>(d->p4), static_cast<QPointF>(GetP3())).length() /
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VSplineData::GetL(static_cast<QPointF>(d->p1), static_cast<QPointF>(d->p4), d->kCurve);
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief GetKcurve return coefficient of curvature spline.
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* @return coefficient
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*/
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auto VSpline::GetKcurve() const -> qreal
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{
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return d->kCurve;
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}
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//---------------------------------------------------------------------------------------------------------------------
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auto VSpline::Sign(long double ld) -> int
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{
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if (qAbs(ld) < 0.00000000001)
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{
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return 0;
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}
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return (ld > 0) ? 1 : -1;
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}
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//---------------------------------------------------------------------------------------------------------------------
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/**
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* @brief Cubic Cubic equation solution. Real coefficients case.
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*
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* This method use method Vieta-Cardano for eval cubic equations.
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* Cubic equation write in form x3+a*x2+b*x+c=0.
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*
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* Output:
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* 3 real roots -> then x is filled with them;
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* 1 real + 2 complex -> x[0] is real, x[1] is real part of complex roots, x[2] - non-negative imaginary part.
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*
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* @param x solution array (size 3).
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* @param a coefficient
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* @param b coefficient
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* @param c coefficient
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* @return 3 - 3 real roots;
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* 1 - 1 real root + 2 complex;
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* 2 - 1 real root + complex roots imaginary part is zero (i.e. 2 real roots).
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*/
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auto VSpline::Cubic(QVector<qreal> &x, qreal a, qreal b, qreal c) -> qint32
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{
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// To find cubic equation roots in the case of real coefficients, calculated at the beginning
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const qreal q = (pow(a, 2) - 3 * b) / 9.;
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const qreal r = (2 * pow(a, 3) - 9 * a * b + 27. * c) / 54.;
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if (pow(r, 2) < pow(q, 3))
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{ // equation has three real roots, use formula Vieta
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const qreal t = acos(r / sqrt(pow(q, 3))) / 3.;
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x.insert(0, -2. * sqrt(q) * cos(t) - a / 3);
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x.insert(1, -2. * sqrt(q) * cos(t + (2 * M_2PI / 3.)) - a / 3.);
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x.insert(2, -2. * sqrt(q) * cos(t - (2 * M_2PI / 3.)) - a / 3.);
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return (3);
|
|
}
|
|
|
|
// 1 real root + 2 complex
|
|
// Formula Cardano
|
|
const qreal aa = -Sign(r) * pow(fabs(r) + sqrt(pow(r, 2) - pow(q, 3)), 1. / 3.);
|
|
const qreal bb = Sign(aa) == 0 ? 0 : q / aa;
|
|
|
|
x.insert(0, aa + bb - a / 3.); // Real root
|
|
x.insert(1, (-0.5) * (aa + bb) - a / 3.); // Complex root
|
|
x.insert(2, (sqrt(3.) * 0.5) * fabs(aa - bb)); // Complex root
|
|
if (qFuzzyIsNull(x.at(2)))
|
|
{
|
|
return (2);
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
auto VSpline::CalcT(qreal curveCoord1, qreal curveCoord2, qreal curveCoord3, qreal curveCoord4, qreal pointCoord)
|
|
-> QVector<qreal>
|
|
{
|
|
const qreal a = -curveCoord1 + 3 * curveCoord2 - 3 * curveCoord3 + curveCoord4;
|
|
const qreal b = 3 * curveCoord1 - 6 * curveCoord2 + 3 * curveCoord3;
|
|
const qreal c = -3 * curveCoord1 + 3 * curveCoord2;
|
|
const qreal d = -pointCoord + curveCoord1;
|
|
|
|
auto t = QVector<qreal>(3, -1);
|
|
Cubic(t, b / a, c / a, d / a);
|
|
|
|
QVector<qreal> retT;
|
|
retT.reserve(t.size());
|
|
for (auto i : qAsConst(t))
|
|
{
|
|
if (i >= 0 && i <= 1)
|
|
{
|
|
retT.append(i);
|
|
}
|
|
}
|
|
|
|
return retT;
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
/**
|
|
* @brief VSpline::ParamT calculate t coeffient that reprezent point on curve.
|
|
*
|
|
* Each point that belongs to Cubic Bézier curve can be shown by coefficient in interval [0; 1].
|
|
*
|
|
* @param pBt point on curve
|
|
* @return t coeffient that reprezent this point on curve. Return -1 if point doesn't belongs to curve.
|
|
*/
|
|
auto VSpline::ParamT(const QPointF &pBt) const -> qreal
|
|
{
|
|
QVector<qreal> ts;
|
|
// Calculate t coefficient for each axis
|
|
ts += CalcT(GetP1().x(), GetP2().x(), GetP3().x(), GetP4().x(), pBt.x());
|
|
ts += CalcT(GetP1().y(), GetP2().y(), GetP3().y(), GetP4().y(), pBt.y());
|
|
|
|
if (ts.isEmpty())
|
|
{
|
|
return -1; // We don't have candidates
|
|
}
|
|
|
|
qreal tx = -1;
|
|
qreal eps = 3; // Error calculation
|
|
|
|
// In morst case we will have 6 result in interval [0; 1].
|
|
// Here we try find closest to our point.
|
|
for (auto t : qAsConst(ts))
|
|
{
|
|
const auto p0 = static_cast<QPointF>(GetP1());
|
|
const auto p1 = static_cast<QPointF>(GetP2());
|
|
const auto p2 = static_cast<QPointF>(GetP3());
|
|
const auto p3 = static_cast<QPointF>(GetP4());
|
|
// The explicit form of the Cubic Bézier curve
|
|
const qreal pointX = pow(1 - t, 3) * p0.x() + 3 * pow(1 - t, 2) * t * p1.x() +
|
|
3 * (1 - t) * pow(t, 2) * p2.x() + pow(t, 3) * p3.x();
|
|
const qreal pointY = pow(1 - t, 3) * p0.y() + 3 * pow(1 - t, 2) * t * p1.y() +
|
|
3 * (1 - t) * pow(t, 2) * p2.y() + pow(t, 3) * p3.y();
|
|
|
|
const QLineF line(pBt, QPointF(pointX, pointY));
|
|
if (line.length() <= eps)
|
|
{
|
|
tx = t;
|
|
eps = line.length(); // Next point should be even closest
|
|
}
|
|
}
|
|
|
|
return tx;
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
auto VSpline::ToJson() const -> QJsonObject
|
|
{
|
|
QJsonObject object = VAbstractCubicBezier::ToJson();
|
|
object["aScale"_L1] = GetApproximationScale();
|
|
object["p1"_L1] = GetP1().ToJson();
|
|
object["p4"_L1] = GetP4().ToJson();
|
|
object["angle1"_L1] = GetStartAngle();
|
|
object["angle1Formula"_L1] = GetStartAngleFormula();
|
|
object["angle2"_L1] = GetEndAngle();
|
|
object["angle2Formula"_L1] = GetEndAngleFormula();
|
|
object["c1Length"_L1] = GetC1Length();
|
|
object["c1LengthFormula"_L1] = GetC1LengthFormula();
|
|
object["c2Length"_L1] = GetC2Length();
|
|
object["c2LengthFormula"_L1] = GetC2LengthFormula();
|
|
return object;
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
auto VSpline::GetControlPoint1() const -> QPointF
|
|
{
|
|
return static_cast<QPointF>(GetP2());
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
auto VSpline::GetControlPoint2() const -> QPointF
|
|
{
|
|
return static_cast<QPointF>(GetP3());
|
|
}
|
|
|
|
//---------------------------------------------------------------------------------------------------------------------
|
|
auto VSpline::GetRealLength() const -> qreal
|
|
{
|
|
return LengthBezier(static_cast<QPointF>(GetP1()), static_cast<QPointF>(GetP2()), static_cast<QPointF>(GetP3()),
|
|
static_cast<QPointF>(GetP4()), maxCurveApproximationScale);
|
|
}
|