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Improve cutting spline and curved path.

Browse source 
Loose cutting restrictions.
This commit is contained in:
Roman Telezhynskyi 2023-11-22 14:58:00 +02:00
parent aee93b01b9
commit c7379122a8
9 changed files with 132 additions and 132 deletions
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193
src/libs/vgeometry/vabstractcubicbezier.cpp
View file

@ -32,14 +32,14 @@
#include <QLineF>
#include <QMessageLogger>
#include <QPoint>
#include <QtDebug>
#include <QtConcurrent>
#include <QtDebug>
#include "../vmisc/def.h"
#include "../vmisc/vmath.h"
#include "../vgeometry/vpointf.h"
#include "../vmisc/vabstractapplication.h"
#include "../ifc/exception/vexception.h"
#include "../vgeometry/vpointf.h"
#include "../vmisc/def.h"
#include "../vmisc/vabstractapplication.h"
#include "../vmisc/vmath.h"
namespace
{
@ -74,28 +74,31 @@ inline auto CalcSqDistance(qreal x1, qreal y1, qreal x2, qreal y2) -> qreal
* @param points spline points coordinates.
* @param approximationScale curve approximation scale.
*/
auto PointBezier_r(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, qreal x4, qreal y4,
qint16 level, QVector<QPointF> points, qreal approximationScale) -> QVector<QPointF>
auto PointBezier_r(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, qreal x4, qreal y4, qint16 level,
QVector<QPointF> points, qreal approximationScale) -> QVector<QPointF>
{
if (points.size() >= 2)
{
for (int i=1; i < points.size(); ++i)
for (int i = 1; i < points.size(); ++i)
{
if (points.at(i-1) == points.at(i))
if (points.at(i - 1) == points.at(i))
{
qDebug("All neighbors points in path must be unique.");
}
}
}
const double curve_collinearity_epsilon = 1e-30;
const double curve_angle_tolerance_epsilon = 0.01;
const double curve_collinearity_epsilon = 1e-30;
const double curve_angle_tolerance_epsilon = 0.01;
const double m_angle_tolerance = 0.0;
enum curve_recursion_limit_e { curve_recursion_limit = 32 };
enum curve_recursion_limit_e
{
curve_recursion_limit = 32
};
const double m_cusp_limit = 0.0;
double m_approximation_scale = approximationScale;
if(m_approximation_scale < minCurveApproximationScale || m_approximation_scale > maxCurveApproximationScale)
if (m_approximation_scale < minCurveApproximationScale || m_approximation_scale > maxCurveApproximationScale)
{
m_approximation_scale = VAbstractApplication::VApp()->Settings()->GetCurveApproximationScale();
}
@ -112,35 +115,35 @@ auto PointBezier_r(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, q
// Calculate all the mid-points of the line segments
//----------------------
const double x12 = (x1 + x2) / 2;
const double y12 = (y1 + y2) / 2;
const double x23 = (x2 + x3) / 2;
const double y23 = (y2 + y3) / 2;
const double x34 = (x3 + x4) / 2;
const double y34 = (y3 + y4) / 2;
const double x123 = (x12 + x23) / 2;
const double y123 = (y12 + y23) / 2;
const double x234 = (x23 + x34) / 2;
const double y234 = (y23 + y34) / 2;
const double x12 = (x1 + x2) / 2;
const double y12 = (y1 + y2) / 2;
const double x23 = (x2 + x3) / 2;
const double y23 = (y2 + y3) / 2;
const double x34 = (x3 + x4) / 2;
const double y34 = (y3 + y4) / 2;
const double x123 = (x12 + x23) / 2;
const double y123 = (y12 + y23) / 2;
const double x234 = (x23 + x34) / 2;
const double y234 = (y23 + y34) / 2;
const double x1234 = (x123 + x234) / 2;
const double y1234 = (y123 + y234) / 2;
// Try to approximate the full cubic curve by a single straight line
//------------------
const double dx = x4-x1;
const double dy = y4-y1;
const double dx = x4 - x1;
const double dy = y4 - y1;
double d2 = fabs((x2 - x4) * dy - (y2 - y4) * dx);
double d3 = fabs((x3 - x4) * dy - (y3 - y4) * dx);
switch ((static_cast<int>(d2 > curve_collinearity_epsilon) << 1) +
static_cast<int>(d3 > curve_collinearity_epsilon))
static_cast<int>(d3 > curve_collinearity_epsilon))
{
case 0:
{
// All collinear OR p1==p4
//----------------------
double k = dx*dx + dy*dy;
double k = dx * dx + dy * dy;
if (k < 0.000000001)
{
d2 = CalcSqDistance(x1, y1, x2, y2);
@ -148,16 +151,16 @@ auto PointBezier_r(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, q
}
else
{
k = 1 / k;
k = 1 / k;
{
const double da1 = x2 - x1;
const double da2 = y2 - y1;
d2 = k * (da1*dx + da2*dy);
d2 = k * (da1 * dx + da2 * dy);
}
{
const double da1 = x3 - x1;
const double da2 = y3 - y1;
d3 = k * (da1*dx + da2*dy);
d3 = k * (da1 * dx + da2 * dy);
}
if (d2 > 0 && d2 < 1 && d3 > 0 && d3 < 1)
{
@ -175,7 +178,7 @@ auto PointBezier_r(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, q
}
else
{
d2 = CalcSqDistance(x2, y2, x1 + d2*dx, y1 + d2*dy);
d2 = CalcSqDistance(x2, y2, x1 + d2 * dx, y1 + d2 * dy);
}
if (d3 <= 0)
@ -188,7 +191,7 @@ auto PointBezier_r(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, q
}
else
{
d3 = CalcSqDistance(x3, y3, x1 + d3*dx, y1 + d3*dy);
d3 = CalcSqDistance(x3, y3, x1 + d3 * dx, y1 + d3 * dy);
}
}
if (d2 > d3)
@ -213,7 +216,7 @@ auto PointBezier_r(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, q
{
// p1,p2,p4 are collinear, p3 is significant
//----------------------
if (d3 * d3 <= m_distance_tolerance_square * (dx*dx + dy*dy))
if (d3 * d3 <= m_distance_tolerance_square * (dx * dx + dy * dy))
{
if (m_angle_tolerance < curve_angle_tolerance_epsilon)
{
@ -251,7 +254,7 @@ auto PointBezier_r(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, q
{
// p1,p3,p4 are collinear, p2 is significant
//----------------------
if (d2 * d2 <= m_distance_tolerance_square * (dx*dx + dy*dy))
if (d2 * d2 <= m_distance_tolerance_square * (dx * dx + dy * dy))
{
if (m_angle_tolerance < curve_angle_tolerance_epsilon)
{
@ -290,7 +293,7 @@ auto PointBezier_r(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, q
{
// Regular case
//-----------------
if ((d2 + d3)*(d2 + d3) <= m_distance_tolerance_square * (dx*dx + dy*dy))
if ((d2 + d3) * (d2 + d3) <= m_distance_tolerance_square * (dx * dx + dy * dy))
{
// If the curvature doesn't exceed the distance_tolerance value
// we tend to finish subdivisions.
@ -303,7 +306,7 @@ auto PointBezier_r(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, q
// Angle & Cusp Condition
//----------------------
const double k = atan2(y3 - y2, x3 - x2);
const double k = atan2(y3 - y2, x3 - x2);
double da1 = fabs(k - atan2(y2 - y1, x2 - x1));
double da2 = fabs(atan2(y4 - y3, x4 - x3) - k);
if (da1 >= M_PI)
@ -368,17 +371,18 @@ auto PointBezier_r(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, q
}
return BezierPoints() + BezierTailPoints();
}
} // namespace
} // namespace
//---------------------------------------------------------------------------------------------------------------------
VAbstractCubicBezier::VAbstractCubicBezier(const GOType &type, const quint32 &idObject, const Draw &mode)
: VAbstractBezier(type, idObject, mode)
{}
: VAbstractBezier(type, idObject, mode)
{
}
//---------------------------------------------------------------------------------------------------------------------
auto VAbstractCubicBezier::operator=(const VAbstractCubicBezier &curve) -> VAbstractCubicBezier &
{
if ( &curve == this )
if (&curve == this)
{
return *this;
}
@ -397,86 +401,86 @@ auto VAbstractCubicBezier::operator=(const VAbstractCubicBezier &curve) -> VAbst
* @param pointName cutting point name.
* @return point of cutting. This point is forth point of first spline and first point of second spline.
*/
auto VAbstractCubicBezier::CutSpline(qreal length, QPointF &spl1p2, QPointF &spl1p3, QPointF &spl2p2,
QPointF &spl2p3, const QString &pointName) const -> QPointF
auto VAbstractCubicBezier::CutSpline(qreal length, QPointF &spl1p2, QPointF &spl1p3, QPointF &spl2p2, QPointF &spl2p3,
const QString &pointName) const -> QPointF
{
//Always need return two splines, so we must correct wrong length.
// Always need return two splines, so we must correct wrong length.
const qreal fullLength = GetLength();
if (fullLength <= minLength)
if (qFuzzyIsNull(fullLength))
{
spl1p2 = spl1p3 = spl2p2 = spl2p3 = QPointF();
spl1p2 = spl1p3 = spl2p2 = spl2p3 = static_cast<QPointF>(GetP1());
const QString errorMsg = QObject::tr("Unable to cut curve '%1'. The curve is too short.").arg(name());
VAbstractApplication::VApp()->IsPedantic() ? throw VException(errorMsg) :
qWarning() << VAbstractApplication::warningMessageSignature + errorMsg;
return {};
return static_cast<QPointF>(GetP1());
}
const qreal maxLength = fullLength - minLength;
if (length < minLength)
if (length < 0)
{
length = minLength;
length = fullLength + length;
}
if (length < 0)
{
QString errorMsg;
if (not pointName.isEmpty())
{
errorMsg = QObject::tr("Curve '%1'. Length of a cut segment (%2) is too small. Optimize it to minimal "
"value.").arg(name(), pointName);
"value.")
.arg(name(), pointName);
}
else
{
errorMsg = QObject::tr("Curve '%1'. Length of a cut segment is too small. Optimize it to minimal value.")
.arg(name());
.arg(name());
}
VAbstractApplication::VApp()->IsPedantic() ? throw VException(errorMsg) :
qWarning() << VAbstractApplication::warningMessageSignature + errorMsg;
VAbstractApplication::VApp()->IsPedantic()
? throw VException(errorMsg)
: qWarning() << VAbstractApplication::warningMessageSignature + errorMsg;
}
else if (length > maxLength)
else if (length > fullLength)
{
length = maxLength;
QString errorMsg;
if (not pointName.isEmpty())
{
errorMsg = QObject::tr("Curve '%1'. Length of a cut segment (%2) is too big. Optimize it to maximal value.")
.arg(name(), pointName);
.arg(name(), pointName);
}
else
{
errorMsg = QObject::tr("Curve '%1'. Length of a cut segment is too big. Optimize it to maximal value.")
.arg(name());
.arg(name());
}
VAbstractApplication::VApp()->IsPedantic() ? throw VException(errorMsg) :
qWarning() << VAbstractApplication::warningMessageSignature + errorMsg;
VAbstractApplication::VApp()->IsPedantic()
? throw VException(errorMsg)
: qWarning() << VAbstractApplication::warningMessageSignature + errorMsg;
}
length = qBound(0.0, length, fullLength);
const qreal parT = GetParmT(length);
QLineF seg1_2 ( static_cast<QPointF>(GetP1 ()), GetControlPoint1 () );
seg1_2.setLength(seg1_2.length () * parT);
QLineF seg1_2(static_cast<QPointF>(GetP1()), GetControlPoint1());
seg1_2.setLength(seg1_2.length() * parT);
const QPointF p12 = seg1_2.p2();
QLineF seg2_3 ( GetControlPoint1(), GetControlPoint2 () );
seg2_3.setLength(seg2_3.length () * parT);
QLineF seg2_3(GetControlPoint1(), GetControlPoint2());
seg2_3.setLength(seg2_3.length() * parT);
const QPointF p23 = seg2_3.p2();
QLineF seg12_23 ( p12, p23 );
seg12_23.setLength(seg12_23.length () * parT);
QLineF seg12_23(p12, p23);
seg12_23.setLength(seg12_23.length() * parT);
const QPointF p123 = seg12_23.p2();
QLineF seg3_4 ( GetControlPoint2 (), static_cast<QPointF>(GetP4 ()) );
seg3_4.setLength(seg3_4.length () * parT);
QLineF seg3_4(GetControlPoint2(), static_cast<QPointF>(GetP4()));
seg3_4.setLength(seg3_4.length() * parT);
const QPointF p34 = seg3_4.p2();
QLineF seg23_34 ( p23, p34 );
seg23_34.setLength(seg23_34.length () * parT);
QLineF seg23_34(p23, p34);
seg23_34.setLength(seg23_34.length() * parT);
const QPointF p234 = seg23_34.p2();
QLineF seg123_234 ( p123, p234 );
seg123_234.setLength(seg123_234.length () * parT);
QLineF seg123_234(p123, p234);
seg123_234.setLength(seg123_234.length() * parT);
const QPointF p1234 = seg123_234.p2();
spl1p2 = p12;
@ -535,8 +539,7 @@ auto VAbstractCubicBezier::GetParmT(qreal length) const -> qreal
}
splLength > length ? parT -= step : parT += step;
}
while (qAbs(splLength - length) > eps);
} while (qAbs(splLength - length) > eps);
return parT;
}
@ -581,8 +584,8 @@ auto VAbstractCubicBezier::GetCubicBezierPoints(const QPointF &p1, const QPointF
{
QVector<QPointF> pvector;
pvector.append(p1);
pvector = PointBezier_r(p1.x(), p1.y(), p2.x(), p2.y(), p3.x(), p3.y(), p4.x(), p4.y(), 0, pvector,
approximationScale);
pvector =
PointBezier_r(p1.x(), p1.y(), p2.x(), p2.y(), p3.x(), p3.y(), p4.x(), p4.y(), 0, pvector, approximationScale);
pvector.append(p4);
return pvector;
}
@ -608,32 +611,32 @@ auto VAbstractCubicBezier::RealLengthByT(qreal t) const -> qreal
{
if (t < 0 || t > 1)
{
qDebug()<<"Wrong value t.";
qDebug() << "Wrong value t.";
return 0;
}
QLineF seg1_2 ( static_cast<QPointF>(GetP1 ()), GetControlPoint1 () );
seg1_2.setLength(seg1_2.length () * t);
QLineF seg1_2(static_cast<QPointF>(GetP1()), GetControlPoint1());
seg1_2.setLength(seg1_2.length() * t);
const QPointF p12 = seg1_2.p2();
QLineF seg2_3 ( GetControlPoint1 (), GetControlPoint2 () );
seg2_3.setLength(seg2_3.length () * t);
QLineF seg2_3(GetControlPoint1(), GetControlPoint2());
seg2_3.setLength(seg2_3.length() * t);
const QPointF p23 = seg2_3.p2();
QLineF seg12_23 ( p12, p23 );
seg12_23.setLength(seg12_23.length () * t);
QLineF seg12_23(p12, p23);
seg12_23.setLength(seg12_23.length() * t);
const QPointF p123 = seg12_23.p2();
QLineF seg3_4 ( GetControlPoint2 (), static_cast<QPointF>(GetP4 ()) );
seg3_4.setLength(seg3_4.length () * t);
QLineF seg3_4(GetControlPoint2(), static_cast<QPointF>(GetP4()));
seg3_4.setLength(seg3_4.length() * t);
const QPointF p34 = seg3_4.p2();
QLineF seg23_34 ( p23, p34 );
seg23_34.setLength(seg23_34.length () * t);
QLineF seg23_34(p23, p34);
seg23_34.setLength(seg23_34.length() * t);
const QPointF p234 = seg23_34.p2();
QLineF seg123_234 ( p123, p234 );
seg123_234.setLength(seg123_234.length () * t);
QLineF seg123_234(p123, p234);
seg123_234.setLength(seg123_234.length() * t);
const QPointF p1234 = seg123_234.p2();
return LengthBezier ( static_cast<QPointF>(GetP1()), p12, p123, p1234, maxCurveApproximationScale);
return LengthBezier(static_cast<QPointF>(GetP1()), p12, p123, p1234, maxCurveApproximationScale);
}

25
src/libs/vgeometry/vabstractcubicbezierpath.cpp
View file

@ -179,25 +179,20 @@ auto VAbstractCubicBezierPath::CutSplinePath(qreal length, qint32 &p1, qint32 &p
// Always need return two spline paths, so we must correct wrong length.
qreal fullLength = GetLength();
if (fullLength <= minLength)
if (qFuzzyIsNull(fullLength))
{
p1 = p2 = -1;
spl1p2 = spl1p3 = spl2p2 = spl2p3 = QPointF();
const QString errorMsg = tr("Unable to cut curve '%1'. The curve is too short.").arg(name());
VAbstractApplication::VApp()->IsPedantic()
? throw VException(errorMsg)
: qWarning() << VAbstractApplication::warningMessageSignature + errorMsg;
return {};
}
const qreal maxLength = fullLength - minLength;
if (length < minLength)
if (length < 0)
{
length = minLength;
length = fullLength + length;
}
if (length < 0)
{
QString errorMsg;
if (not pointName.isEmpty())
{
@ -213,10 +208,8 @@ auto VAbstractCubicBezierPath::CutSplinePath(qreal length, qint32 &p1, qint32 &p
? throw VException(errorMsg)
: qWarning() << VAbstractApplication::warningMessageSignature + errorMsg;
}
else if (length > maxLength)
else if (length > fullLength)
{
length = maxLength;
QString errorMsg;
if (not pointName.isEmpty())
{
@ -232,13 +225,15 @@ auto VAbstractCubicBezierPath::CutSplinePath(qreal length, qint32 &p1, qint32 &p
: qWarning() << VAbstractApplication::warningMessageSignature + errorMsg;
}
length = qBound(0.0, length, fullLength);
fullLength = 0;
for (qint32 i = 1; i <= CountSubSpl(); ++i)
{
const VSpline spl = GetSpline(i);
const qreal splLength = spl.GetLength();
fullLength += splLength;
if (fullLength > length)
if (fullLength >= length)
{
p1 = i - 1;
p2 = i;

2
src/libs/vgeometry/vabstractcurve.h
View file

@ -112,8 +112,6 @@ public:
void SetAliasSuffix(const QString &aliasSuffix) override;
static constexpr qreal minLength = MmToPixel(1.);
static auto Curvature(const QVector<QPointF> &vertices) -> double;
protected:

5
src/libs/vtools/dialogs/tools/dialogcutspline.cpp
View file

@ -426,10 +426,7 @@ void DialogCutSpline::ShowDialog(bool click)
const QSharedPointer<VAbstractCubicBezier> spl = data->GeometricObject<VAbstractCubicBezier>(getSplineId());
QPointF p = spl->ClosestPoint(scene->getScenePos());
qreal len = spl->GetLengthByPoint(p);
if (len > 0)
{
SetFormula(QString::number(FromPixel(len, *data->GetPatternUnit())));
}
SetFormula(QString::number(FromPixel(len, *data->GetPatternUnit())));
}
FinishCreating();

5
src/libs/vtools/dialogs/tools/dialogcutsplinepath.cpp
View file

@ -427,10 +427,7 @@ void DialogCutSplinePath::ShowDialog(bool click)
data->GeometricObject<VAbstractCubicBezierPath>(getSplinePathId());
QPointF p = curve->ClosestPoint(scene->getScenePos());
qreal len = curve->GetLengthByPoint(p);
if (len > 0)
{
SetFormula(QString::number(FromPixel(len, *data->GetPatternUnit())));
}
SetFormula(QString::number(FromPixel(len, *data->GetPatternUnit())));
}
FinishCreating();

2
src/libs/vtools/visualization/path/vistoolcutspline.cpp
View file

@ -69,7 +69,7 @@ void VisToolCutSpline::RefreshGeometry()
const auto spl = GetData()->GeometricObject<VAbstractCubicBezier>(m_splineId);
DrawPath(this, spl->GetPath(), spl->DirectionArrows(), LineStyle(), Qt::RoundCap);
if (not qFuzzyIsNull(m_length))
if (!qIsInf(m_length))
{
QPointF spl1p2;
QPointF spl1p3;

15
src/libs/vtools/visualization/path/vistoolcutspline.h
View file

@ -29,12 +29,12 @@
#ifndef VISTOOLCUTSPLINE_H
#define VISTOOLCUTSPLINE_H
#include <QGraphicsItem>
#include <QMetaObject>
#include <QObject>
#include <QString>
#include <QtGlobal>
#include <limits>
#include "../vmisc/def.h"
#include "vispath.h"
@ -42,6 +42,7 @@
class VisToolCutSpline final : public VisPath
{
Q_OBJECT // NOLINT
public:
explicit VisToolCutSpline(const VContainer *data, QGraphicsItem *parent = nullptr);
~VisToolCutSpline() override = default;
@ -52,15 +53,19 @@ public:
void SetSplineId(quint32 id);
void SetLength(const QString &expression);
auto type() const -> int override {return Type;}
enum {Type = UserType + static_cast<int>(Vis::ToolCutSpline)};
auto type() const -> int override { return Type; }
enum
{
Type = UserType + static_cast<int>(Vis::ToolCutSpline)
};
private:
Q_DISABLE_COPY_MOVE(VisToolCutSpline) // NOLINT
VScaledEllipse *m_point{nullptr};
VCurvePathItem *m_spl1{nullptr};
VCurvePathItem *m_spl2{nullptr};
qreal m_length{0};
quint32 m_splineId{NULL_ID};
qreal m_length{std::numeric_limits<qreal>::infinity()};
quint32 m_splineId{NULL_ID};
};
//---------------------------------------------------------------------------------------------------------------------

2
src/libs/vtools/visualization/path/vistoolcutsplinepath.cpp
View file

@ -68,7 +68,7 @@ void VisToolCutSplinePath::RefreshGeometry()
const auto splPath = GetData()->GeometricObject<VAbstractCubicBezierPath>(m_splinePathId);
DrawPath(this, splPath->GetPath(), splPath->DirectionArrows(), LineStyle(), Qt::RoundCap);
if (not qFuzzyIsNull(m_length))
if (!qIsInf(m_length))
{
VSplinePath *spPath1 = nullptr;
VSplinePath *spPath2 = nullptr;

15
src/libs/vtools/visualization/path/vistoolcutsplinepath.h
View file

@ -29,12 +29,12 @@
#ifndef VISTOOLCUTSPLINEPATH_H
#define VISTOOLCUTSPLINEPATH_H
#include <QGraphicsItem>
#include <QMetaObject>
#include <QObject>
#include <QString>
#include <QtGlobal>
#include <limits>
#include "../vmisc/def.h"
#include "vispath.h"
@ -42,6 +42,7 @@
class VisToolCutSplinePath final : public VisPath
{
Q_OBJECT // NOLINT
public:
explicit VisToolCutSplinePath(const VContainer *data, QGraphicsItem *parent = nullptr);
~VisToolCutSplinePath() override = default;
@ -52,15 +53,19 @@ public:
void SetSplinePathId(quint32 newSplineId);
void SetLength(const QString &expression);
auto type() const -> int override {return Type;}
enum {Type = UserType + static_cast<int>(Vis::ToolCutSpline)};
auto type() const -> int override { return Type; }
enum
{
Type = UserType + static_cast<int>(Vis::ToolCutSpline)
};
private:
Q_DISABLE_COPY_MOVE(VisToolCutSplinePath) // NOLINT
VScaledEllipse *m_point{nullptr};
VCurvePathItem *m_splPath1{nullptr};
VCurvePathItem *m_splPath2{nullptr};
qreal m_length{0};
quint32 m_splinePathId{NULL_ID};
qreal m_length{std::numeric_limits<qreal>::infinity()};
quint32 m_splinePathId{NULL_ID};
};
//---------------------------------------------------------------------------------------------------------------------