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Fix for calculating more accurate unclosed seam allowance.

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--HG--
branch : develop
This commit is contained in:
Roman Telezhynskyi 2015-11-15 20:49:16 +02:00
parent 7027198f2a
commit d118ccb218
2 changed files with 49 additions and 3 deletions
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49
src/libs/vlayout/vabstractdetail.cpp
View File

@ -203,7 +203,7 @@ QVector<QPointF> VAbstractDetail::Equidistant(const QVector<QPointF> &points, co
}
else if (i == 0 && eqv == EquidistantType::OpenEquidistant)
{//first point, polyline doesn't closed
ekvPoints.append(SingleParallelPoint(QLineF(p.at(0), p.at(1)), 90, width));
ekvPoints.append(UnclosedEkvPoint(QLineF(p.at(0), p.at(1)), QLineF(p.at(0), p.at(p.size()-1)), width));
continue;
}
if (i == p.size()-1 && eqv == EquidistantType::CloseEquidistant)
@ -213,7 +213,8 @@ QVector<QPointF> VAbstractDetail::Equidistant(const QVector<QPointF> &points, co
}
else if (i == p.size()-1 && eqv == EquidistantType::OpenEquidistant)
{//last point, polyline doesn't closed
ekvPoints.append(SingleParallelPoint(QLineF(p.at(p.size()-1), p.at(p.size()-2)), -90, width));
ekvPoints.append(UnclosedEkvPoint(QLineF(p.at(p.size()-2), p.at(p.size()-1)),
QLineF(p.at(0), p.at(p.size()-1)), width));
continue;
}
//points in the middle of polyline
@ -432,6 +433,50 @@ QVector<QPointF> VAbstractDetail::EkvPoint(const QLineF &line1, const QLineF &li
return points;
}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief UnclosedEkvPoint helps find point of an unclosed seam allowance. One side of two lines should be equal.
*
* In case of the first seam allowance point equal should be the first point of the two lines. In case the last point -
* the last point of the two lines.
*
* @param line line of a seam allowance
* @param helpLine help line of the main path that cut unclosed seam allowance
* @param width seam allowance width
* @return seam allowance point
*/
QPointF VAbstractDetail::UnclosedEkvPoint(const QLineF &line, const QLineF &helpLine, const qreal &width)
{
if (width <= 0)
{
return QPointF();
}
if (not (line.p2() == helpLine.p2() || line.p1() == helpLine.p1()))
{
qDebug()<<"Two points of two lines must be equal.";
return QPointF();
}
QPointF CrosPoint;
const QLineF bigLine = ParallelLine(line, width );
QLineF::IntersectType type = bigLine.intersect( helpLine, &CrosPoint );
switch (type)
{
case (QLineF::BoundedIntersection):
case (QLineF::UnboundedIntersection):
return CrosPoint;
break;
case (QLineF::NoIntersection):
/*If we have correct lines this means lines lie on a line.*/
return bigLine.p2();
break;
default:
break;
}
return QPointF();
}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief ParallelLine create parallel line.

1
src/libs/vlayout/vabstractdetail.h
View File

@ -75,6 +75,7 @@ private:
static QVector<QPointF> CorrectEquidistantPoints(const QVector<QPointF> &points);
static QVector<QPointF> CheckLoops(const QVector<QPointF> &points);
static QVector<QPointF> EkvPoint(const QLineF &line1, const QLineF &line2, const qreal &width);
static QPointF UnclosedEkvPoint(const QLineF &line, const QLineF &helpLine, const qreal &width);
static QLineF ParallelLine(const QLineF &line, qreal width );
static QPointF SingleParallelPoint(const QLineF &line, const qreal &angle, const qreal &width);
};