valentina/src/libs/vgeometry/varc.cpp
Roman Telezhynskyi 23b22f6186 Correct an arc direction after flipping. ref #829.
--HG--
branch : develop
2018-03-30 11:13:51 +03:00

433 lines
14 KiB
C++

/************************************************************************
**
** @file varc.cpp
** @author Roman Telezhynskyi <dismine(at)gmail.com>
** @date November 15, 2013
**
** @brief
** @copyright
** This source code is part of the Valentina project, a pattern making
** program, whose allow create and modeling patterns of clothing.
** Copyright (C) 2013-2015 Valentina project
** <https://bitbucket.org/dismine/valentina> All Rights Reserved.
**
** Valentina 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 3 of the License, or
** (at your option) any later version.
**
** Valentina 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 Valentina. If not, see <http://www.gnu.org/licenses/>.
**
*************************************************************************/
#include "varc.h"
#include <QLineF>
#include <QPointF>
#include "../vmisc/def.h"
#include "../vmisc/vmath.h"
#include "../ifc/ifcdef.h"
#include "vabstractcurve.h"
#include "varc_p.h"
#include "vspline.h"
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief VArc default constructor.
*/
VArc::VArc ()
: VAbstractArc(GOType::Arc),
d (new VArcData)
{}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief VArc constructor.
* @param center center point.
* @param radius arc radius.
* @param f1 start angle (degree).
* @param f2 end angle (degree).
*/
VArc::VArc (const VPointF &center, qreal radius, const QString &formulaRadius, qreal f1, const QString &formulaF1,
qreal f2, const QString &formulaF2, quint32 idObject, Draw mode)
: VAbstractArc(GOType::Arc, center, f1, formulaF1, f2, formulaF2, idObject, mode),
d (new VArcData(radius, formulaRadius))
{
CreateName();
}
//---------------------------------------------------------------------------------------------------------------------
VArc::VArc(const VPointF &center, qreal radius, qreal f1, qreal f2)
: VAbstractArc(GOType::Arc, center, f1, f2, NULL_ID, Draw::Calculation),
d (new VArcData(radius))
{
CreateName();
}
//---------------------------------------------------------------------------------------------------------------------
VArc::VArc(qreal length, const QString &formulaLength, const VPointF &center, qreal radius,
const QString &formulaRadius, qreal f1, const QString &formulaF1, quint32 idObject, Draw mode)
: VAbstractArc(GOType::Arc, formulaLength, center, f1, formulaF1, idObject, mode),
d (new VArcData(radius, formulaRadius))
{
CreateName();
FindF2(length);
}
//---------------------------------------------------------------------------------------------------------------------
VArc::VArc(qreal length, const VPointF &center, qreal radius, qreal f1)
: VAbstractArc(GOType::Arc, center, f1, NULL_ID, Draw::Calculation),
d (new VArcData(radius))
{
CreateName();
FindF2(length);
}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief VArc copy constructor
* @param arc arc
*/
VArc::VArc(const VArc &arc)
: VAbstractArc(arc), d (arc.d)
{}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief operator = assignment operator
* @param arc arc
* @return arc
*/
VArc &VArc::operator =(const VArc &arc)
{
if ( &arc == this )
{
return *this;
}
VAbstractArc::operator=(arc);
d = arc.d;
return *this;
}
//---------------------------------------------------------------------------------------------------------------------
VArc VArc::Rotate(const QPointF &originPoint, qreal degrees, const QString &prefix) const
{
const VPointF center = GetCenter().Rotate(originPoint, degrees);
const QPointF p1 = VPointF::RotatePF(originPoint, GetP1(), degrees);
const QPointF p2 = VPointF::RotatePF(originPoint, GetP2(), degrees);
const qreal f1 = QLineF(static_cast<QPointF>(center), p1).angle();
const qreal f2 = QLineF(static_cast<QPointF>(center), p2).angle();
VArc arc(center, GetRadius(), f1, f2);
arc.setName(name() + prefix);
arc.SetColor(GetColor());
arc.SetPenStyle(GetPenStyle());
arc.SetFlipped(IsFlipped());
arc.SetApproximationScale(GetApproximationScale());
return arc;
}
//---------------------------------------------------------------------------------------------------------------------
VArc VArc::Flip(const QLineF &axis, const QString &prefix) const
{
const VPointF center = GetCenter().Flip(axis);
const QPointF p1 = VPointF::FlipPF(axis, GetP1());
const QPointF p2 = VPointF::FlipPF(axis, GetP2());
const qreal f1 = QLineF(static_cast<QPointF>(center), p1).angle();
const qreal f2 = QLineF(static_cast<QPointF>(center), p2).angle();
VArc arc(center, GetRadius(), f1, f2);
arc.setName(name() + prefix);
arc.SetColor(GetColor());
arc.SetPenStyle(GetPenStyle());
arc.SetFlipped(not IsFlipped());
arc.SetApproximationScale(GetApproximationScale());
return arc;
}
//---------------------------------------------------------------------------------------------------------------------
VArc VArc::Move(qreal length, qreal angle, const QString &prefix) const
{
const VPointF center = GetCenter().Move(length, angle);
const QPointF p1 = VPointF::MovePF(GetP1(), length, angle);
const QPointF p2 = VPointF::MovePF(GetP2(), length, angle);
const qreal f1 = QLineF(static_cast<QPointF>(center), p1).angle();
const qreal f2 = QLineF(static_cast<QPointF>(center), p2).angle();
VArc arc(center, GetRadius(), f1, f2);
arc.setName(name() + prefix);
arc.SetColor(GetColor());
arc.SetPenStyle(GetPenStyle());
arc.SetFlipped(IsFlipped());
arc.SetApproximationScale(GetApproximationScale());
return arc;
}
//---------------------------------------------------------------------------------------------------------------------
VArc::~VArc()
{}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief GetLength return arc length.
* @return length.
*/
qreal VArc::GetLength() const
{
qreal length = d->radius * qDegreesToRadians(AngleArc());
if (IsFlipped())
{
length *= -1;
}
return length;
}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief GetP1 return point associated with start angle.
* @return point.
*/
QPointF VArc::GetP1() const
{
QPointF p1 ( GetCenter().x () + d->radius, GetCenter().y () );
QLineF centerP1(static_cast<QPointF>(GetCenter()), p1);
centerP1.setAngle(GetStartAngle());
return centerP1.p2();
}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief GetP2 return point associated with end angle.
* @return точку point.
*/
QPointF VArc::GetP2 () const
{
QPointF p2 ( GetCenter().x () + d->radius, GetCenter().y () );
QLineF centerP2(static_cast<QPointF>(GetCenter()), p2);
centerP2.setAngle(GetEndAngle());
return centerP2.p2();
}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief GetPoints return list of points needed for drawing arc.
* @return list of points
*/
QVector<QPointF> VArc::GetPoints() const
{
QVector<QPointF> points;
QVector<qreal> sectionAngle;
QPointF pStart;
IsFlipped() ? pStart = GetP2() : pStart = GetP1();
{
qreal angle = AngleArc();
if (qFuzzyIsNull(angle))
{
points.append(pStart);
return points;
}
if (angle > 360 || angle < 0)
{// Filter incorect value
QLineF dummy(0,0, 100, 0);
dummy.setAngle(angle);
angle = dummy.angle();
}
const qreal angleInterpolation = 45; //degree
const int sections = qFloor(angle / angleInterpolation);
for (int i = 0; i < sections; ++i)
{
sectionAngle.append(angleInterpolation);
}
const qreal tail = angle - sections * angleInterpolation;
if (tail > 0)
{
sectionAngle.append(tail);
}
}
for (int i = 0; i < sectionAngle.size(); ++i)
{
const qreal lDistance = GetRadius() * 4.0/3.0 * qTan(qDegreesToRadians(sectionAngle.at(i)) * 0.25);
const QPointF center = static_cast<QPointF>(GetCenter());
QLineF lineP1P2(pStart, center);
lineP1P2.setAngle(lineP1P2.angle() - 90.0);
lineP1P2.setLength(lDistance);
QLineF lineP4P3(center, pStart);
lineP4P3.setAngle(lineP4P3.angle() + sectionAngle.at(i));
lineP4P3.setLength(GetRadius());//in case of computing error
lineP4P3 = QLineF(lineP4P3.p2(), center);
lineP4P3.setAngle(lineP4P3.angle() + 90.0);
lineP4P3.setLength(lDistance);
VSpline spl(VPointF(pStart), lineP1P2.p2(), lineP4P3.p2(), VPointF(lineP4P3.p1()), 1.0);
spl.SetApproximationScale(GetApproximationScale());
QVector<QPointF> splPoints = spl.GetPoints();
if (not splPoints.isEmpty() && i != sectionAngle.size() - 1)
{
splPoints.removeLast();
}
points << splPoints;
pStart = lineP4P3.p1();
}
return IsFlipped() ? VGObject::GetReversePoints(points) : points;
}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief CutArc cut arc into two arcs.
* @param length length first arc.
* @param arc1 first arc.
* @param arc2 second arc.
* @return point cutting
*/
QPointF VArc::CutArc(const qreal &length, VArc &arc1, VArc &arc2) const
{
//Always need return two arcs, so we must correct wrong length.
qreal len = 0;
const qreal minLength = ToPixel(1, Unit::Mm);
const qreal fullLength = GetLength();
if (fullLength <= minLength)
{
arc1 = VArc();
arc2 = VArc();
return QPointF();
}
const qreal maxLength = fullLength - minLength;
if (length < minLength)
{
len = minLength;
}
else if (length > maxLength)
{
len = maxLength;
}
else
{
len = length;
}
qreal n = qRadiansToDegrees(len/d->radius); // n - is angle in degrees
QLineF line(static_cast<QPointF>(GetCenter()), GetP1());
line.setAngle(line.angle()+n);
arc1 = VArc (GetCenter(), d->radius, d->formulaRadius, GetStartAngle(), GetFormulaF1(), line.angle(),
QString().setNum(line.angle()), getIdObject(), getMode());
arc1.SetApproximationScale(GetApproximationScale());
arc2 = VArc (GetCenter(), d->radius, d->formulaRadius, line.angle(), QString().setNum(line.angle()), GetEndAngle(),
GetFormulaF2(), getIdObject(), getMode());
arc2.SetApproximationScale(GetApproximationScale());
return line.p2();
}
//---------------------------------------------------------------------------------------------------------------------
QPointF VArc::CutArc(const qreal &length) const
{
VArc arc1;
VArc arc2;
return this->CutArc(length, arc1, arc2);
}
//---------------------------------------------------------------------------------------------------------------------
void VArc::CreateName()
{
QString name = ARC_ + QString("%1").arg(this->GetCenter().name());
if (VAbstractCurve::id() != NULL_ID)
{
name += QString("_%1").arg(VAbstractCurve::id());
}
if (GetDuplicate() > 0)
{
name += QString("_%1").arg(GetDuplicate());
}
setName(name);
}
//---------------------------------------------------------------------------------------------------------------------
void VArc::FindF2(qreal length)
{
SetFlipped(length < 0);
if (length >= MaxLength())
{
length = MaxLength();
}
qreal arcAngle = qAbs(qRadiansToDegrees(length/d->radius));
if (IsFlipped())
{
arcAngle = arcAngle * -1;
}
QLineF startAngle(0, 0, 100, 0);
startAngle.setAngle(GetStartAngle() + arcAngle);// We use QLineF just because it is easy way correct angle value
SetFormulaF2(QString().number(startAngle.angle()), startAngle.angle());
}
//---------------------------------------------------------------------------------------------------------------------
qreal VArc::MaxLength() const
{
return M_2PI*d->radius;
}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief GetRadius return arc radius.
* @return radius.
*/
QString VArc::GetFormulaRadius() const
{
return d->formulaRadius;
}
//---------------------------------------------------------------------------------------------------------------------
void VArc::SetFormulaRadius(const QString &formula, qreal value)
{
d->formulaRadius = formula;
d->radius = value;
}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief GetRadius return formula for radius.
* @return string with formula.
*/
qreal VArc::GetRadius() const
{
return d->radius;
}