valentina/tools/vabstracttool.cpp
dismine d20667f056 New method RemoveAllChild.
--HG--
branch : develop
2013-10-25 14:16:07 +03:00

157 lines
6.0 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.
**
** Tox 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"
#include <QDebug>
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);
}
void VAbstractTool::AddAttribute(QDomElement &domElement, const QString &name, const qint64 &value){
QDomAttr domAttr = doc->createAttribute(name);
domAttr.setValue(QString().setNum(value));
domElement.setAttributeNode(domAttr);
}
void VAbstractTool::AddAttribute(QDomElement &domElement, const QString &name, const qint32 &value){
QDomAttr domAttr = doc->createAttribute(name);
domAttr.setValue(QString().setNum(value));
domElement.setAttributeNode(domAttr);
}
void VAbstractTool::AddAttribute(QDomElement &domElement, const QString &name, const qreal &value){
QDomAttr domAttr = doc->createAttribute(name);
domAttr.setValue(QString().setNum(value));
domElement.setAttributeNode(domAttr);
}
void VAbstractTool::AddAttribute(QDomElement &domElement, const QString &name, const QString &value){
QDomAttr domAttr = doc->createAttribute(name);
domAttr.setValue(value);
domElement.setAttributeNode(domAttr);
}
VAbstractTool::~VAbstractTool(){
}
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, "Немає точки перетину.");
return point;
}
qint32 VAbstractTool::LineIntersectCircle(QPointF center, qreal radius, 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(QLineF line, 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, "Немає точки перетину.");
return point;
}
}
return point;
}
QPointF VAbstractTool::addVector(QPointF p, QPointF p1, QPointF p2, qreal k){
return QPointF (p.x() + (p2.x() - p1.x()) * k, p.y() + (p2.y() - p1.y()) * k);
}
const VContainer *VAbstractTool::getData()const{
return &data;
}
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
*a = line.p2().y() - line.p1().y();
*b = line.p1().x() - line.p2().x();
*c = - *a * line.p1().x() - *b * line.p1().y();
}
qint64 VAbstractTool::getId() const{
return id;
}