valentina/tools/vabstracttool.cpp
dismine 40c58022e7 Little optimization.
--HG--
branch : develop
2013-11-06 23:11:12 +02:00

181 lines
7.6 KiB
C++

/****************************************************************************
**
** Copyright (C) 2013 Valentina project All Rights Reserved.
**
** This file is part of Valentina.
**
** Tox 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 "vabstracttool.h"
const QString VAbstractTool::AttrId = QStringLiteral("id");
const QString VAbstractTool::AttrType = QStringLiteral("type");
const QString VAbstractTool::AttrMx = QStringLiteral("mx");
const QString VAbstractTool::AttrMy = QStringLiteral("my");
const QString VAbstractTool::AttrName = QStringLiteral("name");
const QString VAbstractTool::AttrX = QStringLiteral("x");
const QString VAbstractTool::AttrY = QStringLiteral("y");
const QString VAbstractTool::AttrTypeLine = QStringLiteral("typeLine");
const QString VAbstractTool::AttrLength = QStringLiteral("length");
const QString VAbstractTool::AttrBasePoint = QStringLiteral("basePoint");
const QString VAbstractTool::AttrFirstPoint = QStringLiteral("firstPoint");
const QString VAbstractTool::AttrSecondPoint = QStringLiteral("secondPoint");
const QString VAbstractTool::AttrThirdPoint = QStringLiteral("thirdPoint");
const QString VAbstractTool::AttrCenter = QStringLiteral("center");
const QString VAbstractTool::AttrRadius = QStringLiteral("radius");
const QString VAbstractTool::AttrAngle = QStringLiteral("angle");
const QString VAbstractTool::AttrAngle1 = QStringLiteral("angle1");
const QString VAbstractTool::AttrAngle2 = QStringLiteral("angle2");
const QString VAbstractTool::AttrP1Line = QStringLiteral("p1Line");
const QString VAbstractTool::AttrP2Line = QStringLiteral("p2Line");
const QString VAbstractTool::AttrP1Line1 = QStringLiteral("p1Line1");
const QString VAbstractTool::AttrP2Line1 = QStringLiteral("p2Line1");
const QString VAbstractTool::AttrP1Line2 = QStringLiteral("p1Line2");
const QString VAbstractTool::AttrP2Line2 = QStringLiteral("p2Line2");
const QString VAbstractTool::AttrPShoulder = QStringLiteral("pShoulder");
const QString VAbstractTool::AttrPoint1 = QStringLiteral("point1");
const QString VAbstractTool::AttrPoint4 = QStringLiteral("point4");
const QString VAbstractTool::AttrKAsm1 = QStringLiteral("kAsm1");
const QString VAbstractTool::AttrKAsm2 = QStringLiteral("kAsm2");
const QString VAbstractTool::AttrKCurve = QStringLiteral("kCurve");
const QString VAbstractTool::AttrPathPoint = QStringLiteral("pathPoint");
const QString VAbstractTool::AttrPSpline = QStringLiteral("pSpline");
const QString VAbstractTool::AttrAxisP1 = QStringLiteral("axisP1");
const QString VAbstractTool::AttrAxisP2 = QStringLiteral("axisP2");
const QString VAbstractTool::TypeLineNone = QStringLiteral("none");
const QString VAbstractTool::TypeLineLine = QStringLiteral("hair");
VAbstractTool::VAbstractTool(VDomDocument *doc, VContainer *data, qint64 id, QObject *parent)
:VDataTool(data, parent), doc(doc), id(id), baseColor(Qt::black), currentColor(Qt::black)
{
connect(this, &VAbstractTool::toolhaveChange, this->doc, &VDomDocument::haveLiteChange);
connect(this->doc, &VDomDocument::FullUpdateFromFile, this, &VAbstractTool::FullUpdateFromFile);
connect(this, &VAbstractTool::FullUpdateTree, this->doc, &VDomDocument::FullUpdateTree);
}
QPointF VAbstractTool::LineIntersectRect(QRectF rec, QLineF line)
{
qreal x1, y1, x2, y2;
rec.getCoords(&x1, &y1, &x2, &y2);
QPointF point;
QLineF::IntersectType type = line.intersect(QLineF(QPointF(x1, y1), QPointF(x1, y2)), &point);
if ( type == QLineF::BoundedIntersection )
{
return point;
}
type = line.intersect(QLineF(QPointF(x1, y1), QPointF(x2, y1)), &point);
if ( type == QLineF::BoundedIntersection )
{
return point;
}
type = line.intersect(QLineF(QPointF(x1, y2), QPointF(x2, y2)), &point);
if ( type == QLineF::BoundedIntersection )
{
return point;
}
type = line.intersect(QLineF(QPointF(x2, y1), QPointF(x2, y2)), &point);
if ( type == QLineF::BoundedIntersection )
{
return point;
}
Q_ASSERT_X(type != QLineF::BoundedIntersection, Q_FUNC_INFO, "There is no point of intersection.");
return point;
}
qint32 VAbstractTool::LineIntersectCircle(const QPointF &center, qreal radius, const QLineF &line, QPointF &p1,
QPointF &p2)
{
const qreal eps = 1e-8;
//коефіцієнти для рівняння відрізку
qreal a = 0, b = 0, c = 0;
LineCoefficients(line, &a, &b, &c);
// проекция центра окружности на прямую
QPointF p = ClosestPoint (line, center);
// сколько всего решений?
qint32 flag = 0;
qreal d = QLineF (center, p).length();
if (qAbs (d - radius) <= eps)
{
flag = 1;
}
else
{
if (radius > d)
{
flag = 2;
}
else
{
return 0;
}
}
// находим расстояние от проекции до точек пересечения
qreal k = sqrt (radius * radius - d * d);
qreal t = QLineF (QPointF (0, 0), QPointF (b, - a)).length();
// добавляем к проекции векторы направленные к точкам пеерсечения
p1 = addVector (p, QPointF (0, 0), QPointF (- b, a), k / t);
p2 = addVector (p, QPointF (0, 0), QPointF (b, - a), k / t);
return flag;
}
QPointF VAbstractTool::ClosestPoint(const QLineF &line, const QPointF &p)
{
QLineF lineP2pointFrom = QLineF(line.p2(), p);
qreal angle = 180-line.angleTo(lineP2pointFrom)-90;
QLineF pointFromlineP2 = QLineF(p, line.p2());
pointFromlineP2.setAngle(pointFromlineP2.angle()+angle);
QPointF point;
QLineF::IntersectType type = pointFromlineP2.intersect(line, &point);
if ( type == QLineF::BoundedIntersection )
{
return point;
}
else
{
if ( type == QLineF::NoIntersection || type == QLineF::UnboundedIntersection )
{
Q_ASSERT_X(type != QLineF::BoundedIntersection, Q_FUNC_INFO, "Don't have point of intersection.");
return point;
}
}
return point;
}
QPointF VAbstractTool::addVector(const QPointF &p, const QPointF &p1, const QPointF &p2, qreal k)
{
return QPointF (p.x() + (p2.x() - p1.x()) * k, p.y() + (p2.y() - p1.y()) * k);
}
void VAbstractTool::RemoveAllChild(QDomElement &domElement)
{
if ( domElement.hasChildNodes() )
{
while ( domElement.childNodes().length() >= 1 )
{
domElement.removeChild( domElement.firstChild() );
}
}
}
void VAbstractTool::LineCoefficients(const QLineF &line, qreal *a, qreal *b, qreal *c)
{
//коефіцієнти для рівняння відрізку
QPointF p1 = line.p1();
*a = line.p2().y() - p1.y();
*b = p1.x() - line.p2().x();
*c = - *a * p1.x() - *b * p1.y();
}