aw/valentina
1
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Enabled variables lengths of lines and lengths of arcs. Fixed wrong calculation

Browse Source 
of length line and curve.

--HG--
branch : develop
This commit is contained in:
dismine 2013-10-13 18:31:42 +03:00
parent 3407961b65
commit b31002df67
19 changed files with 109 additions and 44 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
container/vcontainer.cpp
View File

@ -108,7 +108,17 @@ qreal VContainer::GetLine(const QString &name) const{
return GetObject(lengthLines, name);
}
qreal VContainer::GetLineArc(const QString &name) const{
qreal VContainer::GetLengthArc(const QString &name) const{
Q_ASSERT(!name.isEmpty());
return GetObject(lengthArcs, name);
}
qreal VContainer::GetLengthSpline(const QString &name) const{
Q_ASSERT(!name.isEmpty());
return GetObject(lengthSplines, name);
}
qreal VContainer::GetLineAngle(const QString &name) const{
Q_ASSERT(!name.isEmpty());
return GetObject(lineAngles, name);
}
@ -562,6 +572,10 @@ qreal VContainer::FindVar(const QString &name, bool *ok)const{
*ok = true;
return lineAngles.value(name);
}
if(lengthSplines.contains(name)){
*ok = true;
return lengthSplines.value(name);
}
*ok = false;
return 0;
}
@ -778,7 +792,7 @@ void VContainer::AddLengthSpline(const qint64 &firstPointId, const qint64 &secon
first = GetModelingPoint(firstPointId);
second = GetModelingPoint(secondPointId);
}
AddLengthSpline(nameLine, QLineF(first.toQPointF(), second.toQPointF()).length());
AddLengthSpline(nameLine, toMM(QLineF(first.toQPointF(), second.toQPointF()).length()));
}
void VContainer::CreateManTableIGroup (){

4
container/vcontainer.h
View File

@ -55,7 +55,9 @@ public:
VStandartTableCell GetStandartTableCell(const QString& name) const;
VIncrementTableRow GetIncrementTableRow(const QString& name) const;
qreal GetLine(const QString &name) const;
qreal GetLineArc(const QString &name) const;
qreal GetLengthArc(const QString &name) const;
qreal GetLengthSpline(const QString &name) const;
qreal GetLineAngle(const QString &name) const;
VSpline GetSpline(qint64 id) const;
VSpline GetModelingSpline(qint64 id) const;
VArc GetArc(qint64 id) const;

4
dialogs/dialogalongline.cpp
View File

@ -33,6 +33,8 @@ DialogAlongLine::DialogAlongLine(const VContainer *data, Draw::Draws mode, QWidg
radioButtonStandartTable = ui->radioButtonStandartTable;
radioButtonIncrements = ui->radioButtonIncrements;
radioButtonLengthLine = ui->radioButtonLengthLine;
radioButtonLengthArc = ui->radioButtonLengthArc;
radioButtonLengthCurve = ui->radioButtonLengthSpline;
lineEditFormula = ui->lineEditFormula;
labelEditFormula = ui->labelEditFormula;
labelEditNamePoint = ui->labelEditNamePoint;
@ -56,6 +58,8 @@ DialogAlongLine::DialogAlongLine(const VContainer *data, Draw::Draws mode, QWidg
connect(ui->radioButtonStandartTable, &QRadioButton::clicked, this, &DialogAlongLine::StandartTable);
connect(ui->radioButtonIncrements, &QRadioButton::clicked, this, &DialogAlongLine::Increments);
connect(ui->radioButtonLengthLine, &QRadioButton::clicked, this, &DialogAlongLine::LengthLines);
connect(ui->radioButtonLengthArc, &QRadioButton::clicked, this, &DialogAlongLine::LengthArcs);
connect(ui->radioButtonLengthSpline, &QRadioButton::clicked, this, &DialogAlongLine::LengthCurves);
connect(ui->toolButtonEqual, &QPushButton::clicked, this, &DialogAlongLine::EvalFormula);
connect(ui->lineEditNamePoint, &QLineEdit::textChanged, this, &DialogAlongLine::NamePointChanged);
connect(ui->lineEditFormula, &QLineEdit::textChanged, this, &DialogAlongLine::FormulaChanged);

4
dialogs/dialogalongline.ui
View File

@ -302,7 +302,7 @@
<item>
<widget class="QRadioButton" name="radioButtonLengthArc">
<property name="enabled">
<bool>false</bool>
<bool>true</bool>
</property>
<property name="text">
<string>Length of arcs</string>
@ -312,7 +312,7 @@
<item>
<widget class="QRadioButton" name="radioButtonLengthSpline">
<property name="enabled">
<bool>false</bool>
<bool>true</bool>
</property>
<property name="text">
<string>Length of curves</string>

6
dialogs/dialogarc.cpp
View File

@ -52,6 +52,8 @@ DialogArc::DialogArc(const VContainer *data, Draw::Draws mode, QWidget *parent)
radioButtonStandartTable = ui->radioButtonStandartTable;
radioButtonIncrements = ui->radioButtonIncrements;
radioButtonLengthLine = ui->radioButtonLengthLine;
radioButtonLengthArc = ui->radioButtonLengthArc;
radioButtonLengthCurve = ui->radioButtonLengthSpline;
connect(ui->toolButtonPutHereRadius, &QPushButton::clicked, this, &DialogArc::PutRadius);
connect(ui->toolButtonPutHereF1, &QPushButton::clicked, this, &DialogArc::PutF1);
@ -64,6 +66,8 @@ DialogArc::DialogArc(const VContainer *data, Draw::Draws mode, QWidget *parent)
connect(ui->radioButtonIncrements, &QRadioButton::clicked, this, &DialogArc::Increments);
connect(ui->radioButtonLengthLine, &QRadioButton::clicked, this, &DialogArc::LengthLines);
connect(ui->radioButtonLineAngles, &QRadioButton::clicked, this, &DialogArc::LineAngles);
connect(ui->radioButtonLengthArc, &QRadioButton::clicked, this, &DialogArc::LengthArcs);
connect(ui->radioButtonLengthSpline, &QRadioButton::clicked, this, &DialogArc::LengthCurves);
connect(ui->toolButtonEqualRadius, &QPushButton::clicked, this, &DialogArc::EvalRadius);
connect(ui->toolButtonEqualF1, &QPushButton::clicked, this, &DialogArc::EvalF1);
@ -153,7 +157,7 @@ void DialogArc::ValChenged(int row){
}
QListWidgetItem *item = ui->listWidget->item( row );
if(ui->radioButtonLineAngles->isChecked()){
QString desc = QString("%1(%2) - %3").arg(item->text()).arg(data->GetLineArc(item->text()))
QString desc = QString("%1(%2) - %3").arg(item->text()).arg(data->GetLineAngle(item->text()))
.arg(tr("Value angle of line."));
ui->labelDescription->setText(desc);
return;

4
dialogs/dialogarc.ui
View File

@ -482,7 +482,7 @@
<item>
<widget class="QRadioButton" name="radioButtonLengthArc">
<property name="enabled">
<bool>false</bool>
<bool>true</bool>
</property>
<property name="text">
<string>Length of arcs</string>
@ -492,7 +492,7 @@
<item>
<widget class="QRadioButton" name="radioButtonLengthSpline">
<property name="enabled">
<bool>false</bool>
<bool>true</bool>
</property>
<property name="text">
<string>Length of curves</string>

4
dialogs/dialogbisector.cpp
View File

@ -33,6 +33,8 @@ DialogBisector::DialogBisector(const VContainer *data, Draw::Draws mode, QWidget
radioButtonStandartTable = ui->radioButtonStandartTable;
radioButtonIncrements = ui->radioButtonIncrements;
radioButtonLengthLine = ui->radioButtonLengthLine;
radioButtonLengthArc = ui->radioButtonLengthArc;
radioButtonLengthCurve = ui->radioButtonLengthSpline;
lineEditFormula = ui->lineEditFormula;
labelEditFormula = ui->labelEditFormula;
labelEditNamePoint = ui->labelEditNamePoint;
@ -57,6 +59,8 @@ DialogBisector::DialogBisector(const VContainer *data, Draw::Draws mode, QWidget
connect(ui->radioButtonStandartTable, &QRadioButton::clicked, this, &DialogBisector::StandartTable);
connect(ui->radioButtonIncrements, &QRadioButton::clicked, this, &DialogBisector::Increments);
connect(ui->radioButtonLengthLine, &QRadioButton::clicked, this, &DialogBisector::LengthLines);
connect(ui->radioButtonLengthArc, &QRadioButton::clicked, this, &DialogBisector::LengthArcs);
connect(ui->radioButtonLengthSpline, &QRadioButton::clicked, this, &DialogBisector::LengthCurves);
connect(ui->toolButtonEqual, &QPushButton::clicked, this, &DialogBisector::EvalFormula);
connect(ui->lineEditNamePoint, &QLineEdit::textChanged, this, &DialogBisector::NamePointChanged);
connect(ui->lineEditFormula, &QLineEdit::textChanged, this, &DialogBisector::FormulaChanged);

4
dialogs/dialogbisector.ui
View File

@ -344,7 +344,7 @@
<item>
<widget class="QRadioButton" name="radioButtonLengthArc">
<property name="enabled">
<bool>false</bool>
<bool>true</bool>
</property>
<property name="text">
<string>Length of arcs</string>
@ -354,7 +354,7 @@
<item>
<widget class="QRadioButton" name="radioButtonLengthSpline">
<property name="enabled">
<bool>false</bool>
<bool>true</bool>
</property>
<property name="text">
<string>Length of curves</string>

4
dialogs/dialogendline.cpp
View File

@ -38,6 +38,8 @@ DialogEndLine::DialogEndLine(const VContainer *data, Draw::Draws mode, QWidget *
radioButtonStandartTable = ui->radioButtonStandartTable;
radioButtonIncrements = ui->radioButtonIncrements;
radioButtonLengthLine = ui->radioButtonLengthLine;
radioButtonLengthArc = ui->radioButtonLengthArc;
radioButtonLengthCurve = ui->radioButtonLengthSpline;
lineEditFormula = ui->lineEditFormula;
labelEditFormula = ui->labelEditFormula;
labelEditNamePoint = ui->labelEditNamePoint;
@ -76,6 +78,8 @@ DialogEndLine::DialogEndLine(const VContainer *data, Draw::Draws mode, QWidget *
connect(ui->radioButtonStandartTable, &QRadioButton::clicked, this, &DialogEndLine::StandartTable);
connect(ui->radioButtonIncrements, &QRadioButton::clicked, this, &DialogEndLine::Increments);
connect(ui->radioButtonLengthLine, &QRadioButton::clicked, this, &DialogEndLine::LengthLines);
connect(ui->radioButtonLengthArc, &QRadioButton::clicked, this, &DialogEndLine::LengthArcs);
connect(ui->radioButtonLengthSpline, &QRadioButton::clicked, this, &DialogEndLine::LengthCurves);
connect(ui->toolButtonEqual, &QPushButton::clicked, this, &DialogEndLine::EvalFormula);
connect(ui->lineEditNamePoint, &QLineEdit::textChanged, this, &DialogEndLine::NamePointChanged);
connect(ui->lineEditFormula, &QLineEdit::textChanged, this, &DialogEndLine::FormulaChanged);

4
dialogs/dialogendline.ui
View File

@ -500,7 +500,7 @@
<item>
<widget class="QRadioButton" name="radioButtonLengthArc">
<property name="enabled">
<bool>false</bool>
<bool>true</bool>
</property>
<property name="text">
<string>Length of arcs</string>
@ -510,7 +510,7 @@
<item>
<widget class="QRadioButton" name="radioButtonLengthSpline">
<property name="enabled">
<bool>false</bool>
<bool>true</bool>
</property>
<property name="text">
<string>Length of curves</string>

4
dialogs/dialognormal.cpp
View File

@ -35,6 +35,8 @@ DialogNormal::DialogNormal(const VContainer *data, Draw::Draws mode, QWidget *pa
radioButtonStandartTable = ui->radioButtonStandartTable;
radioButtonIncrements = ui->radioButtonIncrements;
radioButtonLengthLine = ui->radioButtonLengthLine;
radioButtonLengthArc = ui->radioButtonLengthArc;
radioButtonLengthCurve = ui->radioButtonLengthSpline;
lineEditFormula = ui->lineEditFormula;
labelEditFormula = ui->labelEditFormula;
labelEditNamePoint = ui->labelEditNamePoint;
@ -74,6 +76,8 @@ DialogNormal::DialogNormal(const VContainer *data, Draw::Draws mode, QWidget *pa
connect(ui->radioButtonStandartTable, &QRadioButton::clicked, this, &DialogNormal::StandartTable);
connect(ui->radioButtonIncrements, &QRadioButton::clicked, this, &DialogNormal::Increments);
connect(ui->radioButtonLengthLine, &QRadioButton::clicked, this, &DialogNormal::LengthLines);
connect(ui->radioButtonLengthArc, &QRadioButton::clicked, this, &DialogNormal::LengthArcs);
connect(ui->radioButtonLengthSpline, &QRadioButton::clicked, this, &DialogNormal::LengthCurves);
connect(ui->toolButtonEqual, &QPushButton::clicked, this, &DialogNormal::EvalFormula);
connect(ui->lineEditNamePoint, &QLineEdit::textChanged, this, &DialogNormal::NamePointChanged);
connect(ui->lineEditFormula, &QLineEdit::textChanged, this, &DialogNormal::FormulaChanged);

4
dialogs/dialognormal.ui
View File

@ -519,7 +519,7 @@
<item>
<widget class="QRadioButton" name="radioButtonLengthArc">
<property name="enabled">
<bool>false</bool>
<bool>true</bool>
</property>
<property name="text">
<string>Length of arcs</string>
@ -529,7 +529,7 @@
<item>
<widget class="QRadioButton" name="radioButtonLengthSpline">
<property name="enabled">
<bool>false</bool>
<bool>true</bool>
</property>
<property name="text">
<string>Length of curves</string>

4
dialogs/dialogpointofcontact.cpp
View File

@ -32,6 +32,8 @@ DialogPointOfContact::DialogPointOfContact(const VContainer *data, Draw::Draws m
radioButtonStandartTable = ui.radioButtonStandartTable;
radioButtonIncrements = ui.radioButtonIncrements;
radioButtonLengthLine = ui.radioButtonLengthLine;
radioButtonLengthArc = ui.radioButtonLengthArc;
radioButtonLengthCurve = ui.radioButtonLengthSpline;
lineEditFormula = ui.lineEditFormula;
labelEditFormula = ui.labelEditFormula;
labelEditNamePoint = ui.labelEditNamePoint;
@ -55,6 +57,8 @@ DialogPointOfContact::DialogPointOfContact(const VContainer *data, Draw::Draws m
connect(ui.radioButtonStandartTable, &QRadioButton::clicked, this, &DialogPointOfContact::StandartTable);
connect(ui.radioButtonIncrements, &QRadioButton::clicked, this, &DialogPointOfContact::Increments);
connect(ui.radioButtonLengthLine, &QRadioButton::clicked, this, &DialogPointOfContact::LengthLines);
connect(ui.radioButtonLengthArc, &QRadioButton::clicked, this, &DialogPointOfContact::LengthArcs);
connect(ui.radioButtonLengthSpline, &QRadioButton::clicked, this, &DialogPointOfContact::LengthCurves);
connect(ui.toolButtonEqual, &QPushButton::clicked, this, &DialogPointOfContact::EvalFormula);
connect(ui.lineEditNamePoint, &QLineEdit::textChanged, this, &DialogPointOfContact::NamePointChanged);
connect(ui.lineEditFormula, &QLineEdit::textChanged, this, &DialogPointOfContact::FormulaChanged);

4
dialogs/dialogpointofcontact.ui
View File

@ -359,7 +359,7 @@
<item>
<widget class="QRadioButton" name="radioButtonLengthArc">
<property name="enabled">
<bool>false</bool>
<bool>true</bool>
</property>
<property name="text">
<string>Length of arcs</string>
@ -369,7 +369,7 @@
<item>
<widget class="QRadioButton" name="radioButtonLengthSpline">
<property name="enabled">
<bool>false</bool>
<bool>true</bool>
</property>
<property name="text">
<string>Length of curves</string>

4
dialogs/dialogshoulderpoint.cpp
View File

@ -34,6 +34,8 @@ DialogShoulderPoint::DialogShoulderPoint(const VContainer *data, Draw::Draws mod
radioButtonStandartTable = ui->radioButtonStandartTable;
radioButtonIncrements = ui->radioButtonIncrements;
radioButtonLengthLine = ui->radioButtonLengthLine;
radioButtonLengthArc = ui->radioButtonLengthArc;
radioButtonLengthCurve = ui->radioButtonLengthSpline;
lineEditFormula = ui->lineEditFormula;
labelEditFormula = ui->labelEditFormula;
labelEditNamePoint = ui->labelEditNamePoint;
@ -58,6 +60,8 @@ DialogShoulderPoint::DialogShoulderPoint(const VContainer *data, Draw::Draws mod
connect(ui->radioButtonStandartTable, &QRadioButton::clicked, this, &DialogShoulderPoint::StandartTable);
connect(ui->radioButtonIncrements, &QRadioButton::clicked, this, &DialogShoulderPoint::Increments);
connect(ui->radioButtonLengthLine, &QRadioButton::clicked, this, &DialogShoulderPoint::LengthLines);
connect(ui->radioButtonLengthArc, &QRadioButton::clicked, this, &DialogShoulderPoint::LengthArcs);
connect(ui->radioButtonLengthSpline, &QRadioButton::clicked, this, &DialogShoulderPoint::LengthCurves);
connect(ui->toolButtonEqual, &QPushButton::clicked, this, &DialogShoulderPoint::EvalFormula);
connect(ui->lineEditNamePoint, &QLineEdit::textChanged, this, &DialogShoulderPoint::NamePointChanged);
connect(ui->lineEditFormula, &QLineEdit::textChanged, this, &DialogShoulderPoint::FormulaChanged);

4
dialogs/dialogshoulderpoint.ui
View File

@ -380,7 +380,7 @@
<item>
<widget class="QRadioButton" name="radioButtonLengthArc">
<property name="enabled">
<bool>false</bool>
<bool>true</bool>
</property>
<property name="text">
<string>Length of lines</string>
@ -390,7 +390,7 @@
<item>
<widget class="QRadioButton" name="radioButtonLengthSpline">
<property name="enabled">
<bool>false</bool>
<bool>true</bool>
</property>
<property name="text">
<string>Length of curves</string>

47
dialogs/dialogtool.cpp
View File

@ -30,7 +30,7 @@ DialogTool::DialogTool(const VContainer *data, Draw::Draws mode, QWidget *parent
isInitialized(false), flagName(true), flagFormula(true), timerFormula(0), bOk(0), spinBoxAngle(0),
lineEditFormula(0), listWidget(0), labelResultCalculation(0), labelDescription(0), labelEditNamePoint(0),
labelEditFormula(0), radioButtonSizeGrowth(0), radioButtonStandartTable(0), radioButtonIncrements(0),
radioButtonLengthLine(0), idDetail(0), mode(mode){
radioButtonLengthLine(0), radioButtonLengthArc(0), radioButtonLengthCurve(0), idDetail(0), mode(mode){
Q_CHECK_PTR(data);
timerFormula = new QTimer(this);
connect(timerFormula, &QTimer::timeout, this, &DialogTool::EvalFormula);
@ -309,6 +309,14 @@ void DialogTool::LengthLines(){
ShowVariable(data->DataLengthLines());
}
void DialogTool::LengthArcs(){
ShowVariable(data->DataLengthArcs());
}
void DialogTool::LengthCurves(){
ShowVariable(data->DataLengthSplines());
}
void DialogTool::Increments(){
ShowVariable(data->DataIncrementTable());
}
@ -331,17 +339,19 @@ void DialogTool::ValChenged(int row){
Q_CHECK_PTR(radioButtonStandartTable);
Q_CHECK_PTR(radioButtonIncrements);
Q_CHECK_PTR(radioButtonLengthLine);
Q_CHECK_PTR(radioButtonLengthArc);
Q_CHECK_PTR(radioButtonLengthCurve);
if(listWidget->count() == 0){
return;
}
QListWidgetItem *item = listWidget->item( row );
if(radioButtonSizeGrowth->isChecked()){
if(item->text()=="Р"){
QString desc = QString("%1(%2) - %3").arg(item->text()).arg(data->growth()).arg("Зріст");
QString desc = QString("%1(%2) - %3").arg(item->text()).arg(data->growth()).arg(tr("Growth"));
labelDescription->setText(desc);
}
if(item->text()=="Сг"){
QString desc = QString("%1(%2) - %3").arg(item->text()).arg(data->size()).arg("Розмір");
QString desc = QString("%1(%2) - %3").arg(item->text()).arg(data->size()).arg(tr("Size"));
labelDescription->setText(desc);
}
return;
@ -366,12 +376,28 @@ void DialogTool::ValChenged(int row){
labelDescription->setText(desc);
return;
}
if(radioButtonLengthArc->isChecked()){
QString desc = QString("%1(%2) - %3").arg(item->text()).arg(data->GetLengthArc(item->text()))
.arg(tr("Arc length"));
labelDescription->setText(desc);
return;
}
if(radioButtonLengthCurve->isChecked()){
QString desc = QString("%1(%2) - %3").arg(item->text()).arg(data->GetLengthSpline(item->text()))
.arg(tr("Curve length"));
labelDescription->setText(desc);
return;
}
}
void DialogTool::UpdateList(){
if(radioButtonSizeGrowth == 0 || radioButtonStandartTable == 0 || radioButtonIncrements == 0){
return;
}
Q_CHECK_PTR(radioButtonSizeGrowth);
Q_CHECK_PTR(radioButtonStandartTable);
Q_CHECK_PTR(radioButtonIncrements);
Q_CHECK_PTR(radioButtonLengthLine);
Q_CHECK_PTR(radioButtonLengthArc);
Q_CHECK_PTR(radioButtonLengthCurve);
if(radioButtonSizeGrowth->isChecked()){
ShowVariable(data->DataBase());
}
@ -381,6 +407,15 @@ void DialogTool::UpdateList(){
if(radioButtonIncrements->isChecked()){
ShowVariable(data->DataIncrementTable());
}
if(radioButtonLengthLine->isChecked()){
ShowVariable(data->DataLengthLines());
}
if(radioButtonLengthArc->isChecked()){
ShowVariable(data->DataLengthArcs());
}
if(radioButtonLengthCurve->isChecked()){
ShowVariable(data->DataLengthSplines());
}
}
bool DialogTool::CheckObject(const qint64 &id){

4
dialogs/dialogtool.h
View File

@ -62,6 +62,8 @@ public slots:
void SizeGrowth();
void StandartTable();
void LengthLines();
void LengthArcs();
void LengthCurves();
void Increments();
void PutHere();
void PutVal(QListWidgetItem * item);
@ -86,6 +88,8 @@ protected:
QRadioButton *radioButtonStandartTable;
QRadioButton *radioButtonIncrements;
QRadioButton *radioButtonLengthLine;
QRadioButton *radioButtonLengthArc;
QRadioButton *radioButtonLengthCurve;
qint64 idDetail;
Draw::Draws mode;
bool CheckObject(const qint64 &id);

22
geometry/vspline.cpp
View File

@ -320,32 +320,14 @@ QVector<QPointF> VSpline::GetPoints (QPointF p1, QPointF p2, QPointF p3, QPointF
}
qreal VSpline::LengthBezier ( QPointF p1, QPointF p2, QPointF p3, QPointF p4 ) const{
/*QVector<qreal> px;
QVector<qreal> py;
QVector<qreal>& wpx = px;
QVector<qreal>& wpy = py;
px.append ( p1.x () );
py.append ( p1.y () );
PointBezier_r ( p1.x (), p1.y (), p2.x (), p2.y (),
p3.x (), p3.y (), p4.x (), p4.y (), 0, wpx, wpy);
px.append ( p4.x () );
py.append ( p4.y () );
qint32 i = 0;
qreal length = 0.0;
*
* Наприклад маємо 10 точок. Від 0 до 9 і останню точку не опрацьовуємо.
* Тому від 0 до 8(<10-1).
*
for ( i = 0; i < px.count() - 1; ++i ){
length += QLineF ( QPointF ( px[i], py[i] ), QPointF ( px[i+1], py[i+1] ) ).length ();
}*/
QPainterPath splinePath;
QVector<QPointF> points = GetPoints (p1, p2, p3, p4);
splinePath.moveTo(points[0]);
for (qint32 i = 1; i < points.count(); ++i){
splinePath.lineTo(points[i]);
}
return splinePath.length();
qreal length = toMM(splinePath.length());
return length;
}
void VSpline::PointBezier_r ( qreal x1, qreal y1, qreal x2, qreal y2,