valentina/src/libs/vgeometry/vabstractcurve.cpp
Roman Telezhynskyi a1f4207621 Scale curve direction arrows.
--HG--
branch : develop
2017-06-23 14:18:31 +03:00

403 lines
12 KiB
C++

/************************************************************************
**
** @file vabstractcurve.cpp
** @author Roman Telezhynskyi <dismine(at)gmail.com>
** @date 25 6, 2014
**
** @brief
** @copyright
** This source code is part of the Valentine 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 "vabstractcurve.h"
#include <QLine>
#include <QLineF>
#include <QMessageLogger>
#include <QPainterPath>
#include <QPoint>
#include <QtDebug>
#include "vabstractcurve_p.h"
const qreal VAbstractCurve::lengthCurveDirectionArrow = 14;
VAbstractCurve::VAbstractCurve(const GOType &type, const quint32 &idObject, const Draw &mode)
:VGObject(type, idObject, mode), d (new VAbstractCurveData())
{}
//---------------------------------------------------------------------------------------------------------------------
VAbstractCurve::VAbstractCurve(const VAbstractCurve &curve)
:VGObject(curve), d (curve.d)
{}
//---------------------------------------------------------------------------------------------------------------------
VAbstractCurve &VAbstractCurve::operator=(const VAbstractCurve &curve)
{
if ( &curve == this )
{
return *this;
}
VGObject::operator=(curve);
d = curve.d;
return *this;
}
//---------------------------------------------------------------------------------------------------------------------
VAbstractCurve::~VAbstractCurve()
{}
//---------------------------------------------------------------------------------------------------------------------
QVector<QPointF> VAbstractCurve::GetSegmentPoints(const QVector<QPointF> &points, const QPointF &begin,
const QPointF &end, bool reverse)
{
QVector<QPointF> segment = points;
if (reverse)
{
segment = GetReversePoints(segment);
}
QPointF start = begin;
QPointF finish = end;
if (begin == end)
{
start = segment.first();
finish = segment.last();
}
segment = FromBegin(segment, start);
segment = ToEnd(segment, finish);
return segment;
}
//---------------------------------------------------------------------------------------------------------------------
QVector<QPointF> VAbstractCurve::GetSegmentPoints(const QPointF &begin, const QPointF &end, bool reverse) const
{
return GetSegmentPoints(GetPoints(), begin, end, reverse);
}
//---------------------------------------------------------------------------------------------------------------------
QVector<QPointF> VAbstractCurve::FromBegin(const QVector<QPointF> &points, const QPointF &begin, bool *ok)
{
if (points.count() >= 2)
{
if (points.first().toPoint() == begin.toPoint())
{
if (ok != nullptr)
{
*ok = true;
}
return points;
}
QVector<QPointF> segment;
bool theBegin = false;
for (qint32 i = 0; i < points.count()-1; ++i)
{
if (theBegin == false)
{
if (IsPointOnLineSegment(begin, points.at(i), points.at(i+1)))
{
theBegin = true;
segment.append(begin);
if (i == points.count()-2)
{
segment.append(points.at(i+1));
}
continue;
}
}
else
{
segment.append(points.at(i));
if (i == points.count()-2)
{
segment.append(points.at(i+1));
}
}
}
if (segment.isEmpty())
{
if (ok != nullptr)
{
*ok = false;
}
return points;
}
else
{
if (ok != nullptr)
{
*ok = true;
}
return segment;
}
}
else
{
if (ok != nullptr)
{
*ok = false;
}
return points;
}
}
//---------------------------------------------------------------------------------------------------------------------
QVector<QPointF> VAbstractCurve::ToEnd(const QVector<QPointF> &points, const QPointF &end, bool *ok)
{
QVector<QPointF> reversed = GetReversePoints(points);
reversed = FromBegin(reversed, end, ok);
return GetReversePoints(reversed);
}
//---------------------------------------------------------------------------------------------------------------------
QPainterPath VAbstractCurve::GetPath() const
{
QPainterPath path;
const QVector<QPointF> points = GetPoints();
if (points.count() >= 2)
{
path.addPolygon(QPolygonF(points));
}
else
{
qDebug()<<"points.count() < 2"<<Q_FUNC_INFO;
}
return path;
}
//---------------------------------------------------------------------------------------------------------------------
qreal VAbstractCurve::GetLengthByPoint(const QPointF &point) const
{
const QVector<QPointF> points = GetPoints();
if (points.size() < 2)
{
return -1;
}
if (points.first().toPoint() == point.toPoint())
{
return 0;
}
bool ok = false;
const QVector<QPointF> segment = ToEnd(points, point, &ok);
if (not ok)
{
return -1;
}
return PathLength(segment);
}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief IntersectLine return list of points for real intersection with line
* @param line line that intersect with curve
* @return list of intersection points
*/
QVector<QPointF> VAbstractCurve::IntersectLine(const QLineF &line) const
{
return CurveIntersectLine(this->GetPoints(), line);
}
//---------------------------------------------------------------------------------------------------------------------
bool VAbstractCurve::IsIntersectLine(const QLineF &line) const
{
const QVector<QPointF> points = IntersectLine(line);
return not points.isEmpty();
}
//---------------------------------------------------------------------------------------------------------------------
bool VAbstractCurve::IsPointOnCurve(const QVector<QPointF> &points, const QPointF &p)
{
if (points.isEmpty())
{
return false;
}
else if (points.size() < 2)
{
return points.at(0) == p;
}
else
{
for (qint32 i = 0; i < points.count()-1; ++i)
{
if (IsPointOnLineSegment(p, points.at(i), points.at(i+1)))
{
return true;
}
}
}
return false;
}
//---------------------------------------------------------------------------------------------------------------------
bool VAbstractCurve::IsPointOnCurve(const QPointF &p) const
{
return IsPointOnCurve(GetPoints(), p);
}
//---------------------------------------------------------------------------------------------------------------------
quint32 VAbstractCurve::GetDuplicate() const
{
return d->duplicate;
}
//---------------------------------------------------------------------------------------------------------------------
void VAbstractCurve::SetDuplicate(quint32 number)
{
d->duplicate = number;
CreateName();
}
//---------------------------------------------------------------------------------------------------------------------
QString VAbstractCurve::GetColor() const
{
return d->color;
}
//---------------------------------------------------------------------------------------------------------------------
void VAbstractCurve::SetColor(const QString &color)
{
d->color = color;
}
//---------------------------------------------------------------------------------------------------------------------
QString VAbstractCurve::GetPenStyle() const
{
return d->penStyle;
}
//---------------------------------------------------------------------------------------------------------------------
void VAbstractCurve::SetPenStyle(const QString &penStyle)
{
d->penStyle = penStyle;
}
//---------------------------------------------------------------------------------------------------------------------
QVector<QPointF> VAbstractCurve::CurveIntersectLine(const QVector<QPointF> &points, const QLineF &line)
{
QVector<QPointF> intersections;
for ( auto i = 0; i < points.count()-1; ++i )
{
QPointF crosPoint;
const auto type = line.intersect(QLineF(points.at(i), points.at(i+1)), &crosPoint);
if ( type == QLineF::BoundedIntersection )
{
intersections.append(crosPoint);
}
}
return intersections;
}
//---------------------------------------------------------------------------------------------------------------------
QVector<DirectionArrow> VAbstractCurve::DirectionArrows() const
{
QVector<DirectionArrow> arrows;
const QVector<QPointF> points = GetPoints();
if (points.count() >= 2)
{
/*Need find coordinate midle of curve.
Universal way is take all points and find sum.*/
const qreal seek_length = qAbs(GetLength())/2.0;
qreal found_length = 0;
QLineF arrow;
for (qint32 i = 1; i <= points.size()-1; ++i)
{
arrow = QLineF(points.at(i-1), points.at(i));
found_length += arrow.length();//Length that we aready find
if (seek_length <= found_length)// if have found more that need stop.
{
//subtract length in last line and you will find position of the middle point.
arrow.setLength(arrow.length() - (found_length - seek_length));
break;
}
}
//Reverse line because we want start arrow from this point
arrow = QLineF(arrow.p2(), arrow.p1());
const qreal angle = arrow.angle();//we each time change line angle, better save original angle value
arrow.setLength(lengthCurveDirectionArrow);//arrow length in pixels
DirectionArrow dArrow;
arrow.setAngle(angle-35);
dArrow.first = arrow;
arrow.setAngle(angle+35);
dArrow.second = arrow;
arrows.append(dArrow);
}
return arrows;
}
//---------------------------------------------------------------------------------------------------------------------
QPainterPath VAbstractCurve::ShowDirection(const QVector<DirectionArrow> &arrows, qreal width)
{
QPainterPath path;
for (int i = 0; i < arrows.size(); ++i)
{
const DirectionArrow arrow = arrows.at(i);
if (not arrow.first.isNull() && not arrow.second.isNull())
{
QPainterPath arrowPath;
QLineF line = arrow.first;
line.setLength(width);
arrowPath.moveTo(line.p1());
arrowPath.lineTo(line.p2());
line = arrow.second;
line.setLength(width);
arrowPath.moveTo(line.p1());
arrowPath.lineTo(line.p2());
path.addPath(arrowPath);
}
}
return path;
}
//---------------------------------------------------------------------------------------------------------------------
qreal VAbstractCurve::PathLength(const QVector<QPointF> &path)
{
if (path.size() < 2)
{
return 0;
}
QPainterPath splinePath;
splinePath.moveTo(path.at(0));
for (qint32 i = 1; i < path.count(); ++i)
{
splinePath.lineTo(path.at(i));
}
return splinePath.length();
}