Scale curve direction arrows.

--HG--
branch : develop

src/libs/vgeometry/vabstractcubicbezierpath.cpp

@@ -64,28 +64,17 @@ VAbstractCubicBezierPath::~VAbstractCubicBezierPath()
 {
 }
 
-//---------------------------------------------------------------------------------------------------------------------
-QPainterPath VAbstractCubicBezierPath::GetDirectionPath() const
-{
-    QPainterPath painterPath;
-    for (qint32 i = 1; i <= CountSubSpl(); ++i)
-    {
-        painterPath.addPath(GetSpline(i).GetDirectionPath());
-    }
-    return painterPath;
-}
-
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief GetPath return QPainterPath which reprezent spline path.
  * @return path.
  */
-QPainterPath VAbstractCubicBezierPath::GetPath(PathDirection direction) const
+QPainterPath VAbstractCubicBezierPath::GetPath() const
 {
     QPainterPath painterPath;
     for (qint32 i = 1; i <= CountSubSpl(); ++i)
     {
-        painterPath.addPath(GetSpline(i).GetPath(direction));
+        painterPath.addPath(GetSpline(i).GetPath());
     }
     return painterPath;
 }
@@ -120,6 +109,17 @@ qreal VAbstractCubicBezierPath::GetLength() const
     return length;
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+QVector<DirectionArrow> VAbstractCubicBezierPath::DirectionArrows() const
+{
+    QVector<DirectionArrow> arrows;
+    for (qint32 i = 1; i <= CountSubSpl(); ++i)
+    {
+        arrows += GetSpline(i).DirectionArrows();
+    }
+    return arrows;
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 int VAbstractCubicBezierPath::Segment(const QPointF &p) const
 {

src/libs/vgeometry/vabstractcubicbezierpath.h

@@ -59,11 +59,12 @@ public:
     virtual VSpline GetSpline(qint32 index) const =0;
     virtual QVector<VSplinePoint> GetSplinePath() const =0;
 
-    virtual QPainterPath     GetDirectionPath() const Q_DECL_OVERRIDE;
+    virtual QPainterPath     GetPath() const Q_DECL_OVERRIDE;
-    virtual QPainterPath     GetPath(PathDirection direction = PathDirection::Hide) const Q_DECL_OVERRIDE;
     virtual QVector<QPointF> GetPoints() const Q_DECL_OVERRIDE;
     virtual qreal            GetLength() const Q_DECL_OVERRIDE;
 
+    virtual QVector<DirectionArrow> DirectionArrows() const Q_DECL_OVERRIDE;
+
     int Segment(const QPointF &p) const;
 
     QPointF CutSplinePath(qreal length, qint32 &p1, qint32 &p2, QPointF &spl1p2, QPointF &spl1p3, QPointF &spl2p2,

src/libs/vgeometry/vabstractcurve.cpp

@@ -37,6 +37,8 @@
 
 #include "vabstractcurve_p.h"
 
+const qreal VAbstractCurve::lengthCurveDirectionArrow = 14;
+
 VAbstractCurve::VAbstractCurve(const GOType &type, const quint32 &idObject, const Draw &mode)
     :VGObject(type, idObject, mode), d (new VAbstractCurveData())
 {}
@@ -169,13 +171,7 @@ QVector<QPointF> VAbstractCurve::ToEnd(const QVector<QPointF> &points, const QPo
 }
 
 //---------------------------------------------------------------------------------------------------------------------
-QPainterPath VAbstractCurve::GetDirectionPath() const
+QPainterPath VAbstractCurve::GetPath() const
-{
-    return ShowDirection(GetPoints());
-}
-
-//---------------------------------------------------------------------------------------------------------------------
-QPainterPath VAbstractCurve::GetPath(PathDirection direction) const
 {
     QPainterPath path;
 
@@ -183,12 +179,6 @@ QPainterPath VAbstractCurve::GetPath(PathDirection direction) const
     if (points.count() >= 2)
     {
         path.addPolygon(QPolygonF(points));
-
-        if (direction == PathDirection::Show)
-        {
-            path.addPath(ShowDirection(points));
-        }
-        path.setFillRule(Qt::WindingFill);
     }
     else
     {
@@ -323,10 +313,11 @@ QVector<QPointF> VAbstractCurve::CurveIntersectLine(const QVector<QPointF> &poin
 }
 
 //---------------------------------------------------------------------------------------------------------------------
-QPainterPath VAbstractCurve::ShowDirection(const QVector<QPointF> &points) const
+QVector<DirectionArrow> VAbstractCurve::DirectionArrows() const
 {
-    QPainterPath path;
+    QVector<DirectionArrow> arrows;
 
+    const QVector<QPointF> points = GetPoints();
     if (points.count() >= 2)
     {
         /*Need find coordinate midle of curve.
@@ -350,15 +341,45 @@ QPainterPath VAbstractCurve::ShowDirection(const QVector<QPointF> &points) const
         //Reverse line because we want start arrow from this point
         arrow = QLineF(arrow.p2(), arrow.p1());
         const qreal angle = arrow.angle();//we each time change line angle, better save original angle value
-        arrow.setLength(14);//arrow length in pixels
+        arrow.setLength(lengthCurveDirectionArrow);//arrow length in pixels
+
+        DirectionArrow dArrow;
 
         arrow.setAngle(angle-35);
-        path.moveTo(arrow.p1());
+        dArrow.first = arrow;
-        path.lineTo(arrow.p2());
 
         arrow.setAngle(angle+35);
-        path.moveTo(arrow.p1());
+        dArrow.second = arrow;
-        path.lineTo(arrow.p2());
+
+        arrows.append(dArrow);
+    }
+    return arrows;
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QPainterPath VAbstractCurve::ShowDirection(const QVector<DirectionArrow> &arrows, qreal width)
+{
+    QPainterPath path;
+
+    for (int i = 0; i < arrows.size(); ++i)
+    {
+        const DirectionArrow arrow = arrows.at(i);
+        if (not arrow.first.isNull() && not arrow.second.isNull())
+        {
+            QPainterPath arrowPath;
+
+            QLineF line = arrow.first;
+            line.setLength(width);
+            arrowPath.moveTo(line.p1());
+            arrowPath.lineTo(line.p2());
+
+            line = arrow.second;
+            line.setLength(width);
+            arrowPath.moveTo(line.p1());
+            arrowPath.lineTo(line.p2());
+
+            path.addPath(arrowPath);
+        }
     }
     return path;
 }

src/libs/vgeometry/vabstractcurve.h

@@ -42,7 +42,7 @@
 #include "vgeometrydef.h"
 #include "vgobject.h"
 
-enum class PathDirection : char { Hide, Show };
+typedef QPair<QLineF, QLineF> DirectionArrow;
 
 class QPainterPath;
 class VAbstractCurveData;
@@ -68,8 +68,7 @@ public:
                                               bool reverse = false);
     QVector<QPointF>         GetSegmentPoints(const QPointF &begin, const QPointF &end, bool reverse = false) const;
 
-    virtual QPainterPath     GetDirectionPath() const;
+    virtual QPainterPath     GetPath() const;
-    virtual QPainterPath     GetPath(PathDirection direction = PathDirection::Hide) const;
     virtual qreal            GetLength() const =0;
     qreal                    GetLengthByPoint(const QPointF &point) const;
     virtual QVector<QPointF> IntersectLine(const QLineF &line) const;
@@ -95,7 +94,10 @@ public:
     static QVector<QPointF>  CurveIntersectLine(const QVector<QPointF> &points, const QLineF &line);
 
     virtual QString          NameForHistory(const QString &toolName) const=0;
-    QPainterPath             ShowDirection(const QVector<QPointF> &points) const;
+    virtual QVector<DirectionArrow> DirectionArrows() const;
+    static QPainterPath      ShowDirection(const QVector<DirectionArrow> &arrows, qreal width);
+
+    static const qreal lengthCurveDirectionArrow;
 protected:
     virtual void             CreateName() =0;
 private:

src/libs/vtools/tools/drawTools/toolcurve/vabstractspline.cpp

@@ -81,7 +81,9 @@ QPainterPath VAbstractSpline::shape() const
 
     if (m_isHovered || detailsMode)
     {
-        path.addPath(curve->GetDirectionPath());
+        path.addPath(VAbstractCurve::ShowDirection(curve->DirectionArrows(),
+                                                   ScaleWidth(VAbstractCurve::lengthCurveDirectionArrow,
+                                                              SceneScale(scene()))));
     }
     path.setFillRule(Qt::WindingFill);
 
@@ -131,7 +133,9 @@ void VAbstractSpline::paint(QPainter *painter, const QStyleOptionGraphicsItem *o
         painter->setPen(arrowPen);
         painter->setBrush(brush());
 
-        painter->drawPath(curve->GetDirectionPath());
+        painter->drawPath(VAbstractCurve::ShowDirection(curve->DirectionArrows(),
+                                                        ScaleWidth(VAbstractCurve::lengthCurveDirectionArrow,
+                                                                   SceneScale(scene()))));
 
         painter->restore();
     }

src/libs/vtools/visualization/line/operation/visoperation.h

@@ -72,14 +72,14 @@ int VisOperation::AddFlippedCurve(const QPointF &firstPoint, const QPointF &seco
 
     ++i;
     VCurvePathItem *path = GetCurve(static_cast<quint32>(i), supportColor2);
-    DrawPath(path, curve->GetPath(PathDirection::Show), supportColor2, Qt::SolidLine, Qt::RoundCap);
+    DrawPath(path, curve->GetPath(), curve->DirectionArrows(), supportColor2, Qt::SolidLine, Qt::RoundCap);
 
     ++i;
     path = GetCurve(static_cast<quint32>(i), supportColor);
     if (object1Id != NULL_ID)
     {
         const Item flipped = curve->Flip(QLineF(firstPoint, secondPoint));
-        DrawPath(path, flipped.GetPath(PathDirection::Show), supportColor, Qt::SolidLine, Qt::RoundCap);
+        DrawPath(path, flipped.GetPath(), flipped.DirectionArrows(), supportColor, Qt::SolidLine, Qt::RoundCap);
     }
 
     return i;

src/libs/vtools/visualization/line/operation/vistoolmove.cpp

@@ -166,7 +166,7 @@ QGraphicsPathItem *VisToolMove::AddOriginCurve(quint32 id, int &i)
 
     ++i;
     VCurvePathItem *path = GetCurve(static_cast<quint32>(i), supportColor2);
-    DrawPath(path, curve->GetPath(PathDirection::Show), supportColor2, Qt::SolidLine, Qt::RoundCap);
+    DrawPath(path, curve->GetPath(), curve->DirectionArrows(), supportColor2, Qt::SolidLine, Qt::RoundCap);
 
     return path;
 }
@@ -180,7 +180,7 @@ int VisToolMove::AddMovedCurve(qreal angle, qreal length, quint32 id, int i)
     ++i;
     VCurvePathItem *path = GetCurve(static_cast<quint32>(i), supportColor);
     const Item moved = curve->Move(length, angle);
-    DrawPath(path, moved.GetPath(PathDirection::Show), supportColor, Qt::SolidLine, Qt::RoundCap);
+    DrawPath(path, moved.GetPath(), moved.DirectionArrows(), supportColor, Qt::SolidLine, Qt::RoundCap);
 
     return i;
 }

src/libs/vtools/visualization/line/operation/vistoolrotation.cpp

@@ -117,7 +117,7 @@ void VisToolRotation::RefreshGeometry()
                  Qt::DashLine);
 
         VArc arc(*origin, defPointRadiusPixel*2, 0, tempAngle);
-        DrawPath(angleArc, arc.GetPath(PathDirection::Hide), supportColor2, Qt::SolidLine, Qt::RoundCap);
+        DrawPath(angleArc, arc.GetPath(), supportColor2, Qt::SolidLine, Qt::RoundCap);
 
         Visualization::toolTip = tr("Rotating angle = %1°, <b>Shift</b> - sticking angle, "
                                     "<b>Mouse click</b> - finish creation").arg(tempAngle);
@@ -216,14 +216,14 @@ int VisToolRotation::AddCurve(qreal angle, const QPointF &origin, quint32 id, in
 
     ++i;
     VCurvePathItem *path = GetCurve(static_cast<quint32>(i), supportColor2);
-    DrawPath(path, curve->GetPath(PathDirection::Show), supportColor2, Qt::SolidLine, Qt::RoundCap);
+    DrawPath(path, curve->GetPath(), curve->DirectionArrows(), supportColor2, Qt::SolidLine, Qt::RoundCap);
 
     ++i;
     path = GetCurve(static_cast<quint32>(i), supportColor);
     if (object1Id != NULL_ID)
     {
         const Item rotated = curve->Rotate(origin, angle);
-        DrawPath(path, rotated.GetPath(PathDirection::Show), supportColor, Qt::SolidLine, Qt::RoundCap);
+        DrawPath(path, rotated.GetPath(), rotated.DirectionArrows(), supportColor, Qt::SolidLine, Qt::RoundCap);
     }
 
     return i;

src/libs/vtools/visualization/line/vistoolcurveintersectaxis.cpp

@@ -66,7 +66,7 @@ void VisToolCurveIntersectAxis::RefreshGeometry()
     if (object1Id > NULL_ID)
     {
         const QSharedPointer<VAbstractCurve> curve = Visualization::data->GeometricObject<VAbstractCurve>(object1Id);
-        DrawPath(visCurve, curve->GetPath(PathDirection::Show), supportColor, Qt::SolidLine, Qt::RoundCap);
+        DrawPath(visCurve, curve->GetPath(), curve->DirectionArrows(), supportColor, Qt::SolidLine, Qt::RoundCap);
 
         if (axisPointId > NULL_ID)
         {

src/libs/vtools/visualization/line/vistoolpointfromarcandtangent.cpp

@@ -68,7 +68,7 @@ void VisToolPointFromArcAndTangent::RefreshGeometry()
         if (arcId > NULL_ID)// circle center
         {
             const QSharedPointer<VArc> arc = Visualization::data->GeometricObject<VArc>(arcId);
-            DrawPath(arcPath, arc->GetPath(PathDirection::Show), Qt::darkGreen, Qt::SolidLine, Qt::RoundCap);
+            DrawPath(arcPath, arc->GetPath(), arc->DirectionArrows(), Qt::darkGreen, Qt::SolidLine, Qt::RoundCap);
 
             FindRays(static_cast<QPointF>(*tan), arc.data());
 

src/libs/vtools/visualization/line/vistoolpointofintersectionarcs.cpp

@@ -71,12 +71,12 @@ void VisToolPointOfIntersectionArcs::RefreshGeometry()
     if (arc1Id > NULL_ID)
     {
         const QSharedPointer<VArc> arc1 = Visualization::data->GeometricObject<VArc>(arc1Id);
-        DrawPath(arc1Path, arc1->GetPath(PathDirection::Show), Qt::darkGreen, Qt::SolidLine, Qt::RoundCap);
+        DrawPath(arc1Path, arc1->GetPath(), arc1->DirectionArrows(), Qt::darkGreen, Qt::SolidLine, Qt::RoundCap);
 
         if (arc2Id > NULL_ID)
         {
             const QSharedPointer<VArc> arc2 = Visualization::data->GeometricObject<VArc>(arc2Id);
-            DrawPath(arc2Path, arc2->GetPath(PathDirection::Show), Qt::darkRed, Qt::SolidLine, Qt::RoundCap);
+            DrawPath(arc2Path, arc2->GetPath(), arc2->DirectionArrows(), Qt::darkRed, Qt::SolidLine, Qt::RoundCap);
 
             const QPointF fPoint = VToolPointOfIntersectionArcs::FindPoint(arc1.data(), arc2.data(), crossPoint);
             DrawPoint(point, fPoint, mainColor);

src/libs/vtools/visualization/path/vistoolarc.cpp

@@ -61,7 +61,7 @@ void VisToolArc::RefreshGeometry()
         if (not qFuzzyIsNull(radius) && f1 >= 0 && f2 >= 0)
         {
             VArc arc = VArc (*first, radius, f1, f2);
-            DrawPath(this, arc.GetPath(), arc.GetDirectionPath(), mainColor, lineStyle, Qt::RoundCap);
+            DrawPath(this, arc.GetPath(), arc.DirectionArrows(), mainColor, lineStyle, Qt::RoundCap);
         }
     }
 }

src/libs/vtools/visualization/path/vistoolarcwithlength.cpp

@@ -60,7 +60,7 @@ void VisToolArcWithLength::RefreshGeometry()
         if (not qFuzzyIsNull(radius) && f1 >= 0 && not qFuzzyIsNull(length))
         {
             VArc arc = VArc (length, *first, radius, f1);
-            DrawPath(this, arc.GetPath(), arc.GetDirectionPath(), mainColor, lineStyle, Qt::RoundCap);
+            DrawPath(this, arc.GetPath(), arc.DirectionArrows(), mainColor, lineStyle, Qt::RoundCap);
         }
     }
 }

src/libs/vtools/visualization/path/vistoolcubicbezier.cpp

@@ -90,7 +90,7 @@ void VisToolCubicBezier::RefreshGeometry()
             {
                 VCubicBezier spline(*first, *second, VPointF(Visualization::scenePos),
                                     VPointF(Visualization::scenePos));
-                DrawPath(this, spline.GetPath(PathDirection::Hide), mainColor, lineStyle, Qt::RoundCap);
+                DrawPath(this, spline.GetPath(), mainColor, lineStyle, Qt::RoundCap);
             }
             else
             {
@@ -100,7 +100,7 @@ void VisToolCubicBezier::RefreshGeometry()
                 if (object4Id <= NULL_ID)
                 {
                     VCubicBezier spline(*first, *second, *third,  VPointF(Visualization::scenePos));
-                    DrawPath(this, spline.GetPath(PathDirection::Hide), mainColor, lineStyle, Qt::RoundCap);
+                    DrawPath(this, spline.GetPath(), mainColor, lineStyle, Qt::RoundCap);
                     DrawLine(helpLine2, QLineF(static_cast<QPointF>(*third), Visualization::scenePos), mainColor,
                              Qt::DashLine);
                 }
@@ -112,7 +112,7 @@ void VisToolCubicBezier::RefreshGeometry()
                              Qt::DashLine);
 
                     VCubicBezier spline(*first, *second, *third,  *fourth);
-                    DrawPath(this, spline.GetPath(), spline.GetDirectionPath(), mainColor, lineStyle, Qt::RoundCap);
+                    DrawPath(this, spline.GetPath(), spline.DirectionArrows(), mainColor, lineStyle, Qt::RoundCap);
                 }
             }
         }

src/libs/vtools/visualization/path/vistoolcubicbezierpath.cpp

@@ -97,8 +97,7 @@ void VisToolCubicBezierPath::RefreshGeometry()
 
         if (countSubSpl >= 1)
         {
-            DrawPath(this, path.GetPath(), mainColor, lineStyle, Qt::RoundCap);
+            DrawPath(this, path.GetPath(), path.DirectionArrows(), mainColor, lineStyle, Qt::RoundCap);
-            DrawPath(this, path.GetDirectionPath(), mainColor, Qt::SolidLine, Qt::RoundCap);
 
             for (qint32 i = 1; i<=countSubSpl; ++i)
             {
@@ -203,7 +202,7 @@ void VisToolCubicBezierPath::Creating(const QVector<VPointF> &pathPoints, int po
                 const QPointF p2 = p1p2.p2();
 
                 VSpline spline(p1, p2, Visualization::scenePos, VPointF(Visualization::scenePos));
-                DrawPath(newCurveSegment, spline.GetPath(PathDirection::Hide), mainColor, Qt::SolidLine, Qt::RoundCap);
+                DrawPath(newCurveSegment, spline.GetPath(), mainColor, Qt::SolidLine, Qt::RoundCap);
 
                 DrawLine(helpLine1, p1p2, mainColor, Qt::DashLine);
 
@@ -234,7 +233,7 @@ void VisToolCubicBezierPath::Creating(const QVector<VPointF> &pathPoints, int po
             DrawLine(helpLine1, QLineF(static_cast<QPointF>(p1), p2), mainColor, Qt::DashLine);
 
             VSpline spline(p1, p2, Visualization::scenePos, VPointF(Visualization::scenePos));
-            DrawPath(newCurveSegment, spline.GetPath(PathDirection::Hide), mainColor, Qt::SolidLine, Qt::RoundCap);
+            DrawPath(newCurveSegment, spline.GetPath(), mainColor, Qt::SolidLine, Qt::RoundCap);
 
             const int preLastPoint = subSplCount * 2;
             VScaledEllipse *p2Ctrl = this->getPoint(ctrlPoints, static_cast<unsigned>(preLastPoint));
@@ -260,7 +259,7 @@ void VisToolCubicBezierPath::Creating(const QVector<VPointF> &pathPoints, int po
             DrawLine(helpLine2, QLineF(p3, Visualization::scenePos), mainColor, Qt::DashLine);
 
             VSpline spline(p1, p2, p3, VPointF(Visualization::scenePos));
-            DrawPath(newCurveSegment, spline.GetPath(PathDirection::Hide), mainColor, Qt::SolidLine, Qt::RoundCap);
+            DrawPath(newCurveSegment, spline.GetPath(), mainColor, Qt::SolidLine, Qt::RoundCap);
 
             const int preLastPoint = subSplCount * 2;
             VScaledEllipse *p2Ctrl = this->getPoint(ctrlPoints, static_cast<unsigned>(preLastPoint));

src/libs/vtools/visualization/path/vistoolcutarc.cpp

@@ -64,7 +64,7 @@ void VisToolCutArc::RefreshGeometry()
     if (object1Id > NULL_ID)
     {
         const QSharedPointer<VArc> arc = Visualization::data->GeometricObject<VArc>(object1Id);
-        DrawPath(this, arc->GetPath(), arc->GetDirectionPath(), supportColor, lineStyle, Qt::RoundCap);
+        DrawPath(this, arc->GetPath(), arc->DirectionArrows(), supportColor, lineStyle, Qt::RoundCap);
 
         if (not qFuzzyIsNull(length))
         {
@@ -73,8 +73,8 @@ void VisToolCutArc::RefreshGeometry()
             QPointF p = arc->CutArc(length, ar1, ar2);
             DrawPoint(point, p, mainColor);
 
-            DrawPath(arc1, ar1.GetPath(), ar1.GetDirectionPath(), Qt::darkGreen, lineStyle, Qt::RoundCap);
+            DrawPath(arc1, ar1.GetPath(), ar1.DirectionArrows(), Qt::darkGreen, lineStyle, Qt::RoundCap);
-            DrawPath(arc2, ar2.GetPath(), ar2.GetDirectionPath(), Qt::darkRed, lineStyle, Qt::RoundCap);
+            DrawPath(arc2, ar2.GetPath(), ar2.DirectionArrows(), Qt::darkRed, lineStyle, Qt::RoundCap);
         }
     }
 }

src/libs/vtools/visualization/path/vistoolcutspline.cpp

@@ -66,7 +66,7 @@ void VisToolCutSpline::RefreshGeometry()
     if (object1Id > NULL_ID)
     {
         const auto spl = Visualization::data->GeometricObject<VAbstractCubicBezier>(object1Id);
-        DrawPath(this, spl->GetPath(), spl->GetDirectionPath(), supportColor, lineStyle, Qt::RoundCap);
+        DrawPath(this, spl->GetPath(), spl->DirectionArrows(), supportColor, lineStyle, Qt::RoundCap);
 
         if (not qFuzzyIsNull(length))
         {
@@ -81,8 +81,8 @@ void VisToolCutSpline::RefreshGeometry()
 
             DrawPoint(point, p, mainColor);
 
-            DrawPath(spl1, sp1.GetPath(), sp1.GetDirectionPath(), Qt::darkGreen, lineStyle, Qt::RoundCap);
+            DrawPath(spl1, sp1.GetPath(), sp1.DirectionArrows(), Qt::darkGreen, lineStyle, Qt::RoundCap);
-            DrawPath(spl2, sp2.GetPath(), sp2.GetDirectionPath(), Qt::darkRed, lineStyle, Qt::RoundCap);
+            DrawPath(spl2, sp2.GetPath(), sp2.DirectionArrows(), Qt::darkRed, lineStyle, Qt::RoundCap);
         }
     }
 }

src/libs/vtools/visualization/path/vistoolcutsplinepath.cpp

@@ -65,7 +65,7 @@ void VisToolCutSplinePath::RefreshGeometry()
     if (object1Id > NULL_ID)
     {
         const auto splPath = Visualization::data->GeometricObject<VAbstractCubicBezierPath>(object1Id);
-        DrawPath(this, splPath->GetPath(), splPath->GetDirectionPath(), supportColor, lineStyle, Qt::RoundCap);
+        DrawPath(this, splPath->GetPath(), splPath->DirectionArrows(), supportColor, lineStyle, Qt::RoundCap);
 
         if (not qFuzzyIsNull(length))
         {
@@ -79,8 +79,8 @@ void VisToolCutSplinePath::RefreshGeometry()
             DrawPoint(point, static_cast<QPointF>(*p), mainColor);
             delete p;
 
-            DrawPath(splPath1, spPath1->GetPath(), spPath1->GetDirectionPath(), Qt::darkGreen, lineStyle, Qt::RoundCap);
+            DrawPath(splPath1, spPath1->GetPath(), spPath1->DirectionArrows(), Qt::darkGreen, lineStyle, Qt::RoundCap);
-            DrawPath(splPath2, spPath2->GetPath(), spPath2->GetDirectionPath(), Qt::darkRed, lineStyle, Qt::RoundCap);
+            DrawPath(splPath2, spPath2->GetPath(), spPath2->DirectionArrows(), Qt::darkRed, lineStyle, Qt::RoundCap);
 
             delete spPath1;
             delete spPath2;

src/libs/vtools/visualization/path/vistoolellipticalarc.cpp

@@ -57,7 +57,7 @@ void VisToolEllipticalArc::RefreshGeometry()
         if (not qFuzzyIsNull(radius1) && not qFuzzyIsNull(radius2) && f1 >= 0 && f2 >= 0 && rotationAngle >= 0)
         {
             VEllipticalArc elArc = VEllipticalArc(*first, radius1, radius2, f1, f2, rotationAngle);
-            DrawPath(this, elArc.GetPath(), elArc.GetDirectionPath(), mainColor, lineStyle, Qt::RoundCap);
+            DrawPath(this, elArc.GetPath(), elArc.DirectionArrows(), mainColor, lineStyle, Qt::RoundCap);
         }
     }
 }

src/libs/vtools/visualization/path/vistoolpointofintersectioncurves.cpp

@@ -63,12 +63,13 @@ void VisToolPointOfIntersectionCurves::RefreshGeometry()
     if (object1Id > NULL_ID)
     {
         auto curve1 = Visualization::data->GeometricObject<VAbstractCurve>(object1Id);
-        DrawPath(this, curve1->GetPath(PathDirection::Show), supportColor, Qt::SolidLine, Qt::RoundCap);
+        DrawPath(this, curve1->GetPath(), curve1->DirectionArrows(), supportColor, Qt::SolidLine, Qt::RoundCap);
 
         if (object2Id > NULL_ID)
         {
             auto curve2 = Visualization::data->GeometricObject<VAbstractCurve>(object2Id);
-            DrawPath(visCurve2, curve2->GetPath(PathDirection::Show), supportColor, Qt::SolidLine, Qt::RoundCap);
+            DrawPath(visCurve2, curve2->GetPath(), curve2->DirectionArrows(), supportColor, Qt::SolidLine,
+                     Qt::RoundCap);
 
             auto p = VToolPointOfIntersectionCurves::FindPoint(curve1->GetPoints(), curve2->GetPoints(), vCrossPoint,
                                                                hCrossPoint);

src/libs/vtools/visualization/path/vistoolspline.cpp

@@ -122,7 +122,7 @@ void VisToolSpline::RefreshGeometry()
         if (object4Id <= NULL_ID)
         {
             VSpline spline(*first, p2, Visualization::scenePos, VPointF(Visualization::scenePos));
-            DrawPath(this, spline.GetPath(PathDirection::Hide), mainColor, lineStyle, Qt::RoundCap);
+            DrawPath(this, spline.GetPath(), mainColor, lineStyle, Qt::RoundCap);
         }
         else
         {
@@ -160,12 +160,12 @@ void VisToolSpline::RefreshGeometry()
             if (VFuzzyComparePossibleNulls(angle1, EMPTY_ANGLE) || VFuzzyComparePossibleNulls(angle2, EMPTY_ANGLE))
             {
                 VSpline spline(*first, p2, p3, *second);
-                DrawPath(this, spline.GetPath(PathDirection::Hide), mainColor, lineStyle, Qt::RoundCap);
+                DrawPath(this, spline.GetPath(), mainColor, lineStyle, Qt::RoundCap);
             }
             else
             {
                 VSpline spline(*first, *second, angle1, angle2, kAsm1, kAsm2, kCurve);
-                DrawPath(this, spline.GetPath(), spline.GetDirectionPath(), mainColor, lineStyle, Qt::RoundCap);
+                DrawPath(this, spline.GetPath(), spline.DirectionArrows(), mainColor, lineStyle, Qt::RoundCap);
                 Visualization::toolTip = tr("Use <b>Shift</b> for sticking angle!");
                 emit ToolTip(Visualization::toolTip);
             }

src/libs/vtools/visualization/path/vistoolsplinepath.cpp

@@ -104,7 +104,7 @@ void VisToolSplinePath::RefreshGeometry()
 
         if (size > 1)
         {
-            DrawPath(this, path.GetPath(), path.GetDirectionPath(), mainColor, lineStyle, Qt::RoundCap);
+            DrawPath(this, path.GetPath(), path.DirectionArrows(), mainColor, lineStyle, Qt::RoundCap);
         }
 
         if (path.CountPoints() < 3)
@@ -296,6 +296,6 @@ void VisToolSplinePath::Creating(const QPointF &pSpl, int size)
         }
         emit PathChanged(path);
 
-        DrawPath(newCurveSegment, spline.GetPath(PathDirection::Hide), mainColor, Qt::SolidLine, Qt::RoundCap);
+        DrawPath(newCurveSegment, spline.GetPath(), mainColor, Qt::SolidLine, Qt::RoundCap);
     }
 }

src/libs/vtools/visualization/visualization.cpp

@@ -218,12 +218,13 @@ void Visualization::DrawLine(VScaledLine *lineItem, const QLineF &line, const QC
 void Visualization::DrawPath(VCurvePathItem *pathItem, const QPainterPath &path, const QColor &color,
                              Qt::PenStyle style, Qt::PenCapStyle cap)
 {
-    DrawPath(pathItem, path, QPainterPath(), color, style, cap);
+    DrawPath(pathItem, path, QVector<DirectionArrow>(), color, style, cap);
 }
 
 //---------------------------------------------------------------------------------------------------------------------
-void Visualization::DrawPath(VCurvePathItem *pathItem, const QPainterPath &path, const QPainterPath &direction,
+void Visualization::DrawPath(VCurvePathItem *pathItem, const QPainterPath &path,
-                             const QColor &color, Qt::PenStyle style, Qt::PenCapStyle cap)
+                             const QVector<DirectionArrow> &directionArrows, const QColor &color, Qt::PenStyle style,
+                             Qt::PenCapStyle cap)
 {
     SCASSERT (pathItem != nullptr)
 
@@ -234,7 +235,7 @@ void Visualization::DrawPath(VCurvePathItem *pathItem, const QPainterPath &path,
 
     pathItem->setPen(visPen);
     pathItem->setPath(path);
-    pathItem->SetDirectionPath(direction);
+    pathItem->SetDirectionArrows(directionArrows);
     pathItem->setVisible(true);
 }
 

src/libs/vtools/visualization/visualization.h

@@ -96,8 +96,9 @@ protected:
                           Qt::PenStyle style = Qt::SolidLine);
     void         DrawPath(VCurvePathItem *pathItem, const QPainterPath &path, const QColor &color,
                           Qt::PenStyle style = Qt::SolidLine, Qt::PenCapStyle cap = Qt::SquareCap);
-    void         DrawPath(VCurvePathItem *pathItem, const QPainterPath &path, const QPainterPath &direction,
+    void         DrawPath(VCurvePathItem *pathItem, const QPainterPath &path,
-                          const QColor &color, Qt::PenStyle style = Qt::SolidLine, Qt::PenCapStyle cap = Qt::SquareCap);
+                          const QVector<DirectionArrow> &directionArrows, const QColor &color,
+                          Qt::PenStyle style = Qt::SolidLine, Qt::PenCapStyle cap = Qt::SquareCap);
 
     template <typename Item>
     void         AddItem(Item *item);

src/libs/vwidgets/vcurvepathitem.cpp

@@ -28,13 +28,14 @@
 
 #include "vcurvepathitem.h"
 #include "../vwidgets/global.h"
+#include "../vgeometry/vabstractcurve.h"
 
 #include <QPainter>
 
 //---------------------------------------------------------------------------------------------------------------------
 VCurvePathItem::VCurvePathItem(QGraphicsItem *parent)
     : QGraphicsPathItem(parent),
-      m_direction()
+      m_directionArrows()
 {
 }
 
@@ -43,13 +44,15 @@ QPainterPath VCurvePathItem::shape() const
 {
     QPainterPath itemPath = path();
 
-    if (m_direction != QPainterPath())
+    const QPainterPath arrowsPath = VAbstractCurve::ShowDirection(m_directionArrows,
+                                                                  ScaleWidth(VAbstractCurve::lengthCurveDirectionArrow,
+                                                                             SceneScale(scene())));
+    if (arrowsPath != QPainterPath())
     {
-        itemPath.addPath(m_direction);
+        itemPath.addPath(arrowsPath);
+        itemPath.setFillRule(Qt::WindingFill);
     }
 
-    itemPath.setFillRule(Qt::WindingFill);
-
     // We unfortunately need this hack as QPainterPathStroker will set a width of 1.0
     // if we pass a value of 0.0 to QPainterPathStroker::setWidth()
     const qreal penWidthZero = qreal(0.00000001);
@@ -81,7 +84,11 @@ void VCurvePathItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *op
 {
     ScalePenWidth();
 
-    if (m_direction != QPainterPath())
+    const QPainterPath arrowsPath = VAbstractCurve::ShowDirection(m_directionArrows,
+                                                                  ScaleWidth(VAbstractCurve::lengthCurveDirectionArrow,
+                                                                             SceneScale(scene())));
+
+    if (arrowsPath != QPainterPath())
     {
         painter->save();
 
@@ -90,7 +97,7 @@ void VCurvePathItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *op
 
         painter->setPen(arrowPen);
         painter->setBrush(brush());
-        painter->drawPath(m_direction);
+        painter->drawPath(arrowsPath);
 
         painter->restore();
     }
@@ -99,9 +106,9 @@ void VCurvePathItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *op
 }
 
 //---------------------------------------------------------------------------------------------------------------------
-void VCurvePathItem::SetDirectionPath(const QPainterPath &path)
+void VCurvePathItem::SetDirectionArrows(const QVector<QPair<QLineF, QLineF> > &arrows)
 {
-    m_direction = path;
+    m_directionArrows = arrows;
 }
 
 //---------------------------------------------------------------------------------------------------------------------

src/libs/vwidgets/vcurvepathitem.h

@@ -48,13 +48,13 @@ public:
     virtual int  type() const Q_DECL_OVERRIDE {return Type;}
     enum { Type = UserType + static_cast<int>(Vis::CurvePathItem)};
 
-    void SetDirectionPath(const QPainterPath &path);
+    void SetDirectionArrows(const QVector<QPair<QLineF, QLineF>> &arrows);
 protected:
     virtual void ScalePenWidth();
 private:
     Q_DISABLE_COPY(VCurvePathItem)
 
-    QPainterPath m_direction;
+    QVector<QPair<QLineF, QLineF>> m_directionArrows;
 };
 
 #endif // VCURVEPATHITEM_H

src/libs/vwidgets/vsimplecurve.cpp

@@ -64,7 +64,7 @@ void VSimpleCurve::RefreshGeometry(const QSharedPointer<VAbstractCurve> &curve)
 
     if (not m_curve.isNull())
     {
-        m_isHovered ? SetDirectionPath(m_curve->GetDirectionPath()) : SetDirectionPath(QPainterPath());
+        m_isHovered ? SetDirectionArrows(m_curve->DirectionArrows()) : SetDirectionArrows(QVector<DirectionArrow>());
         setPath(m_curve->GetPath());
     }
     else