diff --git a/container/vcontainer.cpp b/container/vcontainer.cpp
index 3033bf1f1..5a50e0d95 100644
--- a/container/vcontainer.cpp
+++ b/container/vcontainer.cpp
@@ -163,7 +163,7 @@ QPainterPath VContainer::ContourPath(qint64 idDetail) const
     VDetail detail = GetDetail(idDetail);
     QVector<QPointF> points;
     QVector<QPointF> pointsEkv;
-    for (qint32 i = 0; i< detail.CountNode(); ++i)
+    for (ptrdiff_t i = 0; i< detail.CountNode(); ++i)
     {
         switch (detail[i].getTypeTool())
         {
diff --git a/dialogs/dialogdetail.cpp b/dialogs/dialogdetail.cpp
index 2e64e986e..91d339552 100644
--- a/dialogs/dialogdetail.cpp
+++ b/dialogs/dialogdetail.cpp
@@ -188,7 +188,7 @@ void DialogDetail::setDetails(const VDetail &value)
 {
     details = value;
     ui.listWidget->clear();
-    for (qint32 i = 0; i < details.CountNode(); ++i)
+    for (ptrdiff_t i = 0; i < details.CountNode(); ++i)
     {
         NewItem(details[i].getId(), details[i].getTypeTool(), details[i].getMode(), details[i].getTypeNode(),
                 details[i].getMx(), details[i].getMy());
diff --git a/dialogs/dialogtool.cpp b/dialogs/dialogtool.cpp
index a07413b69..2e4ea80f5 100644
--- a/dialogs/dialogtool.cpp
+++ b/dialogs/dialogtool.cpp
@@ -79,7 +79,7 @@ void DialogTool::FillComboBoxPoints(QComboBox *box, const qint64 &id) const
             return;
         }
         VDetail det = data->GetDetail(idDetail);
-        for (qint32 i = 0; i< det.CountNode(); ++i)
+        for (ptrdiff_t i = 0; i< det.CountNode(); ++i)
         {
             if (det[i].getTypeTool() == Tool::NodePoint ||
                 det[i].getTypeTool() == Tool::AlongLineTool ||
diff --git a/geometry/vspline.cpp b/geometry/vspline.cpp
index 67ab29023..25b56b8db 100644
--- a/geometry/vspline.cpp
+++ b/geometry/vspline.cpp
@@ -76,7 +76,7 @@ void VSpline::ModifiSpl ( qint64 p1, qint64 p4, qreal angle1, qreal angle2,
     this->p3 = p4p3.p2();
 }
 
-void VSpline::ModifiSpl (qint64 p1, QPointF p2, QPointF p3, qint64 p4, qreal kCurve)
+void VSpline::ModifiSpl (const qint64 &p1, const QPointF &p2, const QPointF &p3, const qint64 &p4, const qreal &kCurve)
 {
     this->p1 = p1;
     this->p2 = p2;
@@ -278,7 +278,7 @@ QVector<QPointF> VSpline::GetPoints () const
 //    }
 }
 
-QVector<QPointF> VSpline::GetPoints (QPointF p1, QPointF p2, QPointF p3, QPointF p4)
+QVector<QPointF> VSpline::GetPoints (const QPointF &p1, const QPointF &p2, const QPointF &p3, const QPointF &p4)
 {
     QVector<QPointF> pvector;
     QVector<qreal> x;
@@ -298,7 +298,7 @@ QVector<QPointF> VSpline::GetPoints (QPointF p1, QPointF p2, QPointF p3, QPointF
     return pvector;
 }
 
-qreal VSpline::LengthBezier ( QPointF p1, QPointF p2, QPointF p3, QPointF p4 ) const
+qreal VSpline::LengthBezier ( const QPointF &p1, const QPointF &p2, const QPointF &p3, const QPointF &p4 ) const
 {
     QPainterPath splinePath;
     QVector<QPointF> points = GetPoints (p1, p2, p3, p4);
@@ -351,8 +351,8 @@ void VSpline::PointBezier_r ( qreal x1, qreal y1, qreal x2, qreal y2,
     double dx = x4-x1;
     double dy = y4-y1;
     
-    double d2 = fabs(((x2 - x4) * dy - (y2 - y4) * dx));
-    double d3 = fabs(((x3 - x4) * dy - (y3 - y4) * dx));
+    double d2 = fabs((x2 - x4) * dy - (y2 - y4) * dx);
+    double d3 = fabs((x3 - x4) * dy - (y3 - y4) * dx);
     double da1, da2, k;
     
     switch ((static_cast<int>(d2 > curve_collinearity_epsilon) << 1) +
@@ -747,7 +747,7 @@ QPainterPath VSpline::GetPath() const
 //    this->ModifiSpl(P1, P2, P3, P4);
 //}
 
-QVector<QPointF> VSpline::SplinePoints(QPointF p1, QPointF p4, qreal angle1, qreal angle2, qreal kAsm1,
+QVector<QPointF> VSpline::SplinePoints(const QPointF &p1, const QPointF &p4, qreal angle1, qreal angle2, qreal kAsm1,
                                        qreal kAsm2, qreal kCurve)
 {
     QLineF p1pX(p1.x(), p1.y(), p1.x() + 100, p1.y());
diff --git a/geometry/vspline.h b/geometry/vspline.h
index abbc90121..a8245de01 100644
--- a/geometry/vspline.h
+++ b/geometry/vspline.h
@@ -79,7 +79,8 @@ public:
      * @param p3 друга контролююча точка сплайну.
      * @param p4 кінцева точка сплайну.
      */
-    void           ModifiSpl (qint64 p1, QPointF p2, QPointF p3, qint64 p4, qreal kCurve);
+    void           ModifiSpl (const qint64 &p1, const QPointF &p2, const QPointF &p3, const qint64 &p4,
+                              const qreal &kCurve);
     /**
      * @brief RotationSpl поворот сплайна навколо точки на кут в градусах проти годиникової стрілки.
      * @param pRotate точка навколо якої повертаємо.
@@ -178,8 +179,8 @@ public:
 //    void         Mirror(const QPointF Pmirror);
     inline Draw::Draws getMode() const {return mode;}
     inline void    setMode(const Draw::Draws &value) {mode = value;}
-    static QVector<QPointF> SplinePoints(QPointF p1, QPointF p4, qreal angle1, qreal angle2, qreal kAsm1, qreal kAsm2,
-                                         qreal kCurve);
+    static QVector<QPointF> SplinePoints(const QPointF &p1, const QPointF &p4, qreal angle1, qreal angle2, qreal kAsm1,
+                                         qreal kAsm2, qreal kCurve);
     inline qint64  getIdObject() const {return idObject;}
     inline void    setIdObject(const qint64 &value) {idObject = value;}
     VSpline        &operator=(const VSpline &spl);
@@ -192,7 +193,7 @@ protected:
      * @param p4 кінцева точка сплайну.
      * @return список точок.
      */
-    static QVector<QPointF> GetPoints ( QPointF p1, QPointF p2, QPointF p3, QPointF p4 );
+    static QVector<QPointF> GetPoints (const QPointF &p1, const QPointF &p2, const QPointF &p3, const QPointF &p4 );
 private:
     /**
      * @brief p1 початкова точка сплайну
@@ -232,7 +233,7 @@ private:
      * @param p4 кінцева точка сплайну.
      * @return дожина сплайну.
      */
-    qreal          LengthBezier ( QPointF p1, QPointF p2, QPointF p3, QPointF p4 ) const;
+    qreal          LengthBezier (const QPointF &p1, const QPointF &p2, const QPointF &p3, const QPointF &p4 ) const;
     /**
      * @brief PointBezier_r знаходить точки сплайну по його чотирьом точках.
      * @param x1 х координата першої точки сплайну.
diff --git a/geometry/vsplinepath.cpp b/geometry/vsplinepath.cpp
index 01eb67bc4..df3baad54 100644
--- a/geometry/vsplinepath.cpp
+++ b/geometry/vsplinepath.cpp
@@ -32,7 +32,7 @@ VSplinePath::VSplinePath(const VSplinePath &splPath)
     : path(*splPath.GetPoint()), kCurve(splPath.getKCurve()), mode(splPath.getMode()), points(splPath.GetDataPoints()),
     idObject(splPath.getIdObject()){}
 
-void VSplinePath::append(VSplinePoint point)
+void VSplinePath::append(const VSplinePoint &point)
 {
     path.append(point);
 }
@@ -104,7 +104,7 @@ qreal VSplinePath::GetLength() const
     return length;
 }
 
-void VSplinePath::UpdatePoint(qint32 indexSpline, SplinePoint::Position pos, VSplinePoint point)
+void VSplinePath::UpdatePoint(qint32 indexSpline, const SplinePoint::Position &pos, const VSplinePoint &point)
 {
     if (indexSpline < 1 || indexSpline > Count())
     {
diff --git a/geometry/vsplinepath.h b/geometry/vsplinepath.h
index 77d7c956d..412afb317 100644
--- a/geometry/vsplinepath.h
+++ b/geometry/vsplinepath.h
@@ -55,7 +55,7 @@ public:
      * @brief append додає точку сплайну до шляху.
      * @param point точка.
      */
-    void          append(VSplinePoint point);
+    void          append(const VSplinePoint &point);
     qint32        Count() const;
     inline qint32 CountPoint() const {return path.size();}
     VSpline       GetSpline(qint32 index) const;
@@ -64,7 +64,7 @@ public:
     inline QVector<VSplinePoint> GetSplinePath() const {return path;}
     qreal         GetLength() const;
     inline QHash<qint64, VPointF> GetDataPoints() const {return points;}
-    void          UpdatePoint(qint32 indexSpline, SplinePoint::Position pos, VSplinePoint point);
+    void          UpdatePoint(qint32 indexSpline, const SplinePoint::Position &pos, const VSplinePoint &point);
     VSplinePoint  GetSplinePoint(qint32 indexSpline, SplinePoint::Position pos) const;
     /**
      * @brief Clear очищає шлях сплайнів.
diff --git a/tools/drawTools/vtoolnormal.cpp b/tools/drawTools/vtoolnormal.cpp
index 138410b3e..4334eef3a 100644
--- a/tools/drawTools/vtoolnormal.cpp
+++ b/tools/drawTools/vtoolnormal.cpp
@@ -64,7 +64,7 @@ void VToolNormal::Create(QSharedPointer<DialogNormal> &dialog, VMainGraphicsScen
 }
 
 void VToolNormal::Create(const qint64 _id, const QString &formula, const qint64 &firstPointId,
-                         const qint64 &secondPointId, const QString typeLine, const QString pointName,
+                         const qint64 &secondPointId, const QString &typeLine, const QString &pointName,
                          const qreal angle, const qreal &mx, const qreal &my, VMainGraphicsScene *scene,
                          VDomDocument *doc, VContainer *data, const Document::Documents &parse,
                          const Tool::Sources &typeCreation)
diff --git a/tools/drawTools/vtoolnormal.h b/tools/drawTools/vtoolnormal.h
index 9ad7322c1..598496309 100644
--- a/tools/drawTools/vtoolnormal.h
+++ b/tools/drawTools/vtoolnormal.h
@@ -31,12 +31,13 @@ class VToolNormal : public VToolLinePoint
 public:
                    VToolNormal(VDomDocument *doc, VContainer *data, const qint64 &id, const QString &typeLine,
                                const QString &formula, const qreal &angle, const qint64 &firstPointId,
-                               const qint64 &secondPointId, const Tool::Sources &typeCreation, QGraphicsItem * parent = 0);
+                               const qint64 &secondPointId, const Tool::Sources &typeCreation,
+                               QGraphicsItem * parent = 0);
     virtual void   setDialog();
     static void    Create(QSharedPointer<DialogNormal> &dialog, VMainGraphicsScene  *scene, VDomDocument *doc,
                           VContainer *data);
     static void    Create(const qint64 _id, const QString &formula, const qint64 &firstPointId,
-                          const qint64 &secondPointId, const QString typeLine, const QString pointName,
+                          const qint64 &secondPointId, const QString &typeLine, const QString &pointName,
                           const qreal angle, const qreal &mx, const qreal &my, VMainGraphicsScene  *scene,
                           VDomDocument *doc, VContainer *data, const Document::Documents &parse,
                           const Tool::Sources &typeCreation);
diff --git a/tools/drawTools/vtoolpoint.cpp b/tools/drawTools/vtoolpoint.cpp
index e4b0368b6..37ac56ec9 100644
--- a/tools/drawTools/vtoolpoint.cpp
+++ b/tools/drawTools/vtoolpoint.cpp
@@ -36,7 +36,7 @@ VToolPoint::VToolPoint(VDomDocument *doc, VContainer *data, qint64 id, QGraphics
     RefreshPointGeometry(VAbstractTool::data.GetPoint(id));
 }
 
-void VToolPoint::NameChangePosition(const QPointF pos)
+void VToolPoint::NameChangePosition(const QPointF &pos)
 {
     VPointF point = VAbstractTool::data.GetPoint(id);
     QPointF p = pos - this->pos();
diff --git a/tools/drawTools/vtoolpoint.h b/tools/drawTools/vtoolpoint.h
index 993744961..8bcd8c0b0 100644
--- a/tools/drawTools/vtoolpoint.h
+++ b/tools/drawTools/vtoolpoint.h
@@ -33,7 +33,7 @@ public:
     virtual                 ~VToolPoint(){}
     static const QString    TagName;
 public slots:
-    void                    NameChangePosition(const QPointF pos);
+    void                    NameChangePosition(const QPointF &pos);
     virtual void            ChangedActivDraw(const QString &newName);
     virtual void            FullUpdateFromGui(int result) = 0;
     virtual void            ShowTool(qint64 id, Qt::GlobalColor color, bool enable);
diff --git a/tools/drawTools/vtoolspline.cpp b/tools/drawTools/vtoolspline.cpp
index a03cf5f9a..c2324bbe3 100644
--- a/tools/drawTools/vtoolspline.cpp
+++ b/tools/drawTools/vtoolspline.cpp
@@ -167,8 +167,8 @@ void VToolSpline::FullUpdateFromGui(int result)
     dialogSpline.clear();
 }
 
-void VToolSpline::ControlPointChangePosition(const qint32 &indexSpline, SplinePoint::Position position,
-                                              const QPointF pos)
+void VToolSpline::ControlPointChangePosition(const qint32 &indexSpline, const SplinePoint::Position &position,
+                                             const QPointF &pos)
 {
     Q_UNUSED(indexSpline);
     VSpline spl = VAbstractTool::data.GetSpline(id);
diff --git a/tools/drawTools/vtoolspline.h b/tools/drawTools/vtoolspline.h
index 9bcf09bc9..1960981e0 100644
--- a/tools/drawTools/vtoolspline.h
+++ b/tools/drawTools/vtoolspline.h
@@ -50,8 +50,8 @@ signals:
 public slots:
     virtual void FullUpdateFromFile ();
     virtual void FullUpdateFromGui ( int result );
-    void         ControlPointChangePosition ( const qint32 &indexSpline, SplinePoint::Position position,
-                                              const QPointF pos);
+    void         ControlPointChangePosition (const qint32 &indexSpline, const SplinePoint::Position &position,
+                                             const QPointF &pos);
     virtual void ChangedActivDraw ( const QString &newName );
     virtual void ShowTool(qint64 id, Qt::GlobalColor color, bool enable);
     virtual void SetFactor(qreal factor);
diff --git a/tools/drawTools/vtoolsplinepath.cpp b/tools/drawTools/vtoolsplinepath.cpp
index c6162d01d..230b9a696 100644
--- a/tools/drawTools/vtoolsplinepath.cpp
+++ b/tools/drawTools/vtoolsplinepath.cpp
@@ -156,8 +156,8 @@ void VToolSplinePath::FullUpdateFromGui(int result)
     dialogSplinePath.clear();
 }
 
-void VToolSplinePath::ControlPointChangePosition(const qint32 &indexSpline, SplinePoint::Position position,
-                                                 const QPointF pos)
+void VToolSplinePath::ControlPointChangePosition(const qint32 &indexSpline, const SplinePoint::Position &position,
+                                                 const QPointF &pos)
 {
     VSplinePath splPath = VAbstractTool::data.GetSplinePath(id);
     VSpline spl = splPath.GetSpline(indexSpline);
diff --git a/tools/drawTools/vtoolsplinepath.h b/tools/drawTools/vtoolsplinepath.h
index 734615815..804eddedf 100644
--- a/tools/drawTools/vtoolsplinepath.h
+++ b/tools/drawTools/vtoolsplinepath.h
@@ -48,8 +48,8 @@ signals:
 public slots:
     virtual void  FullUpdateFromFile();
     virtual void  FullUpdateFromGui(int result);
-    void          ControlPointChangePosition(const qint32 &indexSpline, SplinePoint::Position position,
-                                             const QPointF pos);
+    void          ControlPointChangePosition(const qint32 &indexSpline, const SplinePoint::Position &position,
+                                             const QPointF &pos);
     virtual void  ChangedActivDraw(const QString &newName);
     virtual void  ShowTool(qint64 id, Qt::GlobalColor color, bool enable);
     virtual void  SetFactor(qreal factor);
diff --git a/tools/drawTools/vtooltriangle.cpp b/tools/drawTools/vtooltriangle.cpp
index 683cf9a5a..94affbaea 100644
--- a/tools/drawTools/vtooltriangle.cpp
+++ b/tools/drawTools/vtooltriangle.cpp
@@ -101,8 +101,8 @@ void VToolTriangle::Create(const qint64 _id, const QString &pointName, const qin
     }
 }
 
-QPointF VToolTriangle::FindPoint(const QPointF axisP1, const QPointF axisP2, const QPointF firstPoint,
-                                 const QPointF secondPoint)
+QPointF VToolTriangle::FindPoint(const QPointF &axisP1, const QPointF &axisP2, const QPointF &firstPoint,
+                                 const QPointF &secondPoint)
 {
     qreal c = QLineF(firstPoint, secondPoint).length();
     qreal a = QLineF(axisP2, firstPoint).length();
diff --git a/tools/drawTools/vtooltriangle.h b/tools/drawTools/vtooltriangle.h
index eed07c6a2..5990ef214 100644
--- a/tools/drawTools/vtooltriangle.h
+++ b/tools/drawTools/vtooltriangle.h
@@ -39,8 +39,8 @@ public:
                           const qint64 &firstPointId, const qint64 &secondPointId, const qreal &mx, const qreal &my,
                           VMainGraphicsScene *scene, VDomDocument *doc, VContainer *data,
                           const Document::Documents &parse, const Tool::Sources &typeCreation);
-    static QPointF FindPoint(const QPointF axisP1, const QPointF axisP2, const QPointF firstPoint,
-                              const QPointF secondPoint);
+    static QPointF FindPoint(const QPointF &axisP1, const QPointF &axisP2, const QPointF &firstPoint,
+                             const QPointF &secondPoint);
     static const QString ToolType;
 public slots:
     virtual void   FullUpdateFromFile();
diff --git a/tools/modelingTools/vmodelingpoint.cpp b/tools/modelingTools/vmodelingpoint.cpp
index 9c0e225da..948e1bb17 100644
--- a/tools/modelingTools/vmodelingpoint.cpp
+++ b/tools/modelingTools/vmodelingpoint.cpp
@@ -38,7 +38,7 @@ VModelingPoint::VModelingPoint(VDomDocument *doc, VContainer *data, qint64 id, Q
     RefreshPointGeometry(VAbstractTool::data.GetModelingPoint(id));
 }
 
-void VModelingPoint::NameChangePosition(const QPointF pos)
+void VModelingPoint::NameChangePosition(const QPointF &pos)
 {
     VPointF point = VAbstractTool::data.GetModelingPoint(id);
     QPointF p = pos - this->pos();
diff --git a/tools/modelingTools/vmodelingpoint.h b/tools/modelingTools/vmodelingpoint.h
index 360db6153..33d446263 100644
--- a/tools/modelingTools/vmodelingpoint.h
+++ b/tools/modelingTools/vmodelingpoint.h
@@ -33,7 +33,7 @@ public:
     virtual                 ~VModelingPoint() {}
     static const QString    TagName;
 public slots:
-    void                    NameChangePosition(const QPointF pos);
+    void                    NameChangePosition(const QPointF &pos);
     virtual void            FullUpdateFromGui(int result) = 0;
 protected:
     qreal                   radius;
diff --git a/tools/modelingTools/vmodelingspline.cpp b/tools/modelingTools/vmodelingspline.cpp
index 40ebf04fc..d1ffd0640 100644
--- a/tools/modelingTools/vmodelingspline.cpp
+++ b/tools/modelingTools/vmodelingspline.cpp
@@ -163,7 +163,7 @@ void VModelingSpline::FullUpdateFromGui(int result)
 }
 
 void VModelingSpline::ControlPointChangePosition(const qint32 &indexSpline, SplinePoint::Position position,
-                                                 const QPointF pos)
+                                                 const QPointF &pos)
 {
     Q_UNUSED(indexSpline);
     VSpline spl = VAbstractTool::data.GetModelingSpline(id);
diff --git a/tools/modelingTools/vmodelingspline.h b/tools/modelingTools/vmodelingspline.h
index e52bb13b0..04d07348c 100644
--- a/tools/modelingTools/vmodelingspline.h
+++ b/tools/modelingTools/vmodelingspline.h
@@ -50,7 +50,7 @@ public slots:
     virtual void            FullUpdateFromFile ();
     virtual void            FullUpdateFromGui ( int result );
     void                    ControlPointChangePosition (const qint32 &indexSpline, SplinePoint::Position position,
-                                                        const QPointF pos);
+                                                        const QPointF &pos);
 protected:
     virtual void            contextMenuEvent ( QGraphicsSceneContextMenuEvent * event );
     virtual void            AddToFile ();
diff --git a/tools/modelingTools/vmodelingsplinepath.cpp b/tools/modelingTools/vmodelingsplinepath.cpp
index 0a79618f8..c91e3bbc7 100644
--- a/tools/modelingTools/vmodelingsplinepath.cpp
+++ b/tools/modelingTools/vmodelingsplinepath.cpp
@@ -153,7 +153,7 @@ void VModelingSplinePath::FullUpdateFromGui(int result)
 }
 
 void VModelingSplinePath::ControlPointChangePosition(const qint32 &indexSpline, SplinePoint::Position position,
-                                                 const QPointF pos)
+                                                 const QPointF &pos)
 {
     VSplinePath splPath = VAbstractTool::data.GetModelingSplinePath(id);
     VSpline spl = splPath.GetSpline(indexSpline);
diff --git a/tools/modelingTools/vmodelingsplinepath.h b/tools/modelingTools/vmodelingsplinepath.h
index 6ae804c74..141bf5317 100644
--- a/tools/modelingTools/vmodelingsplinepath.h
+++ b/tools/modelingTools/vmodelingsplinepath.h
@@ -47,7 +47,7 @@ public slots:
     virtual void  FullUpdateFromFile();
     virtual void  FullUpdateFromGui(int result);
     void          ControlPointChangePosition(const qint32 &indexSpline, SplinePoint::Position position,
-                                             const QPointF pos);
+                                             const QPointF &pos);
 protected:
     virtual void  contextMenuEvent ( QGraphicsSceneContextMenuEvent * event );
     virtual void  AddToFile();
diff --git a/tools/nodeDetails/vnodearc.cpp b/tools/nodeDetails/vnodearc.cpp
index 77b654b23..254247d58 100644
--- a/tools/nodeDetails/vnodearc.cpp
+++ b/tools/nodeDetails/vnodearc.cpp
@@ -39,7 +39,7 @@ VNodeArc::VNodeArc(VDomDocument *doc, VContainer *data, qint64 id, qint64 idArc,
     }
 }
 
-void VNodeArc::Create(VDomDocument *doc, VContainer *data, qint64 id, qint64 idArc, Draw::Draws typeobject,
+void VNodeArc::Create(VDomDocument *doc, VContainer *data, qint64 id, qint64 idArc, const Draw::Draws &typeobject,
                       const Document::Documents &parse, const Tool::Sources &typeCreation)
 {
     if (parse == Document::FullParse)
diff --git a/tools/nodeDetails/vnodearc.h b/tools/nodeDetails/vnodearc.h
index eb419e858..a580113d8 100644
--- a/tools/nodeDetails/vnodearc.h
+++ b/tools/nodeDetails/vnodearc.h
@@ -31,8 +31,8 @@ class VNodeArc :public VAbstractNode, public QGraphicsPathItem
 public:
                  VNodeArc(VDomDocument *doc, VContainer *data, qint64 id, qint64 idArc, Draw::Draws typeobject,
                           const Tool::Sources &typeCreation, QGraphicsItem * parent = 0);
-    static void  Create(VDomDocument *doc, VContainer *data, qint64 id, qint64 idArc,
-                        Draw::Draws typeobject, const Document::Documents &parse, const Tool::Sources &typeCreation);
+    static void  Create(VDomDocument *doc, VContainer *data, qint64 id, qint64 idArc, const Draw::Draws &typeobject,
+                        const Document::Documents &parse, const Tool::Sources &typeCreation);
     static const QString TagName;
     static const QString ToolType;
 public slots:
diff --git a/tools/nodeDetails/vnodepoint.cpp b/tools/nodeDetails/vnodepoint.cpp
index ddba6ebfd..734b0434e 100644
--- a/tools/nodeDetails/vnodepoint.cpp
+++ b/tools/nodeDetails/vnodepoint.cpp
@@ -44,7 +44,7 @@ VNodePoint::VNodePoint(VDomDocument *doc, VContainer *data, qint64 id, qint64 id
     }
 }
 
-void VNodePoint::Create(VDomDocument *doc, VContainer *data, qint64 id, qint64 idPoint, Draw::Draws typeobject,
+void VNodePoint::Create(VDomDocument *doc, VContainer *data, qint64 id, qint64 idPoint, const Draw::Draws &typeobject,
                         const Document::Documents &parse, const Tool::Sources &typeCreation)
 {
     if (parse == Document::FullParse)
@@ -109,7 +109,7 @@ void VNodePoint::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
 }
 
 
-void VNodePoint::NameChangePosition(const QPointF pos)
+void VNodePoint::NameChangePosition(const QPointF &pos)
 {
     VPointF point = VAbstractTool::data.GetModelingPoint(id);
     QPointF p = pos - this->pos();
diff --git a/tools/nodeDetails/vnodepoint.h b/tools/nodeDetails/vnodepoint.h
index eb4dbda0a..162e1f036 100644
--- a/tools/nodeDetails/vnodepoint.h
+++ b/tools/nodeDetails/vnodepoint.h
@@ -31,13 +31,13 @@ class VNodePoint: public VAbstractNode, public QGraphicsEllipseItem
 public:
                  VNodePoint(VDomDocument *doc, VContainer *data, qint64 id, qint64 idPoint, Draw::Draws typeobject,
                             const Tool::Sources &typeCreation, QGraphicsItem * parent = 0 );
-    static void  Create(VDomDocument *doc, VContainer *data, qint64 id, qint64 idPoint, Draw::Draws typeobject,
+    static void  Create(VDomDocument *doc, VContainer *data, qint64 id, qint64 idPoint, const Draw::Draws &typeobject,
                         const Document::Documents &parse, const Tool::Sources &typeCreation);
     static const QString TagName;
     static const QString ToolType;
 public slots:
     virtual void FullUpdateFromFile();
-    void         NameChangePosition(const QPointF pos);
+    void         NameChangePosition(const QPointF &pos);
 protected:
     qreal        radius;
     VGraphicsSimpleTextItem *namePoint;
diff --git a/tools/nodeDetails/vnodespline.cpp b/tools/nodeDetails/vnodespline.cpp
index c78ebc5e6..53dcaa9b6 100644
--- a/tools/nodeDetails/vnodespline.cpp
+++ b/tools/nodeDetails/vnodespline.cpp
@@ -40,7 +40,7 @@ VNodeSpline::VNodeSpline(VDomDocument *doc, VContainer *data, qint64 id, qint64
 }
 
 VNodeSpline *VNodeSpline::Create(VDomDocument *doc, VContainer *data, qint64 id, qint64 idSpline,
-                                 Draw::Draws typeobject, const Document::Documents &parse,
+                                 const Draw::Draws &typeobject, const Document::Documents &parse,
                                  const Tool::Sources &typeCreation)
 {
     VNodeSpline *spl = 0;
diff --git a/tools/nodeDetails/vnodespline.h b/tools/nodeDetails/vnodespline.h
index bf7be5854..5e0f1cb7f 100644
--- a/tools/nodeDetails/vnodespline.h
+++ b/tools/nodeDetails/vnodespline.h
@@ -31,8 +31,9 @@ class VNodeSpline:public VAbstractNode, public QGraphicsPathItem
 public:
                   VNodeSpline(VDomDocument *doc, VContainer *data, qint64 id, qint64 idSpline, Draw::Draws typeobject,
                               const Tool::Sources &typeCreation, QGraphicsItem * parent = 0);
-    static VNodeSpline *Create(VDomDocument *doc, VContainer *data, qint64 id, qint64 idSpline, Draw::Draws typeobject,
-                               const Document::Documents &parse, const Tool::Sources &typeCreation);
+    static VNodeSpline *Create(VDomDocument *doc, VContainer *data, qint64 id, qint64 idSpline,
+                               const Draw::Draws &typeobject, const Document::Documents &parse,
+                               const Tool::Sources &typeCreation);
     static const QString TagName;
     static const QString ToolType;
 public slots:
diff --git a/tools/nodeDetails/vnodesplinepath.cpp b/tools/nodeDetails/vnodesplinepath.cpp
index 985209598..a185cc4bd 100644
--- a/tools/nodeDetails/vnodesplinepath.cpp
+++ b/tools/nodeDetails/vnodesplinepath.cpp
@@ -25,7 +25,7 @@ const QString VNodeSplinePath::TagName = QStringLiteral("spline");
 const QString VNodeSplinePath::ToolType = QStringLiteral("modelingPath");
 
 VNodeSplinePath::VNodeSplinePath(VDomDocument *doc, VContainer *data, qint64 id, qint64 idSpline,
-                                         Draw::Draws typeobject, const Tool::Sources &typeCreation, QGraphicsItem * parent)
+                                 Draw::Draws typeobject, const Tool::Sources &typeCreation, QGraphicsItem * parent)
     :VAbstractNode(doc, data, id, idSpline, typeobject), QGraphicsPathItem(parent)
 {
     RefreshGeometry();
@@ -40,7 +40,8 @@ VNodeSplinePath::VNodeSplinePath(VDomDocument *doc, VContainer *data, qint64 id,
 }
 
 void VNodeSplinePath::Create(VDomDocument *doc, VContainer *data, qint64 id, qint64 idSpline,
-                             Draw::Draws typeobject, const Document::Documents &parse, const Tool::Sources &typeCreation)
+                             const Draw::Draws &typeobject, const Document::Documents &parse,
+                             const Tool::Sources &typeCreation)
 {
     if (parse == Document::FullParse)
     {
diff --git a/tools/nodeDetails/vnodesplinepath.h b/tools/nodeDetails/vnodesplinepath.h
index e2fa1dbea..596701428 100644
--- a/tools/nodeDetails/vnodesplinepath.h
+++ b/tools/nodeDetails/vnodesplinepath.h
@@ -31,7 +31,7 @@ class VNodeSplinePath : public VAbstractNode, public QGraphicsPathItem
 public:
                  VNodeSplinePath(VDomDocument *doc, VContainer *data, qint64 id, qint64 idSpline,
                                  Draw::Draws typeobject, const Tool::Sources &typeCreation, QGraphicsItem * parent = 0);
-    static void  Create(VDomDocument *doc, VContainer *data, qint64 id, qint64 idSpline, Draw::Draws typeobject,
+    static void  Create(VDomDocument *doc, VContainer *data, qint64 id, qint64 idSpline, const Draw::Draws &typeobject,
                         const Document::Documents &parse, const Tool::Sources &typeCreation);
     static const QString TagName;
     static const QString ToolType;
diff --git a/tools/vtooldetail.cpp b/tools/vtooldetail.cpp
index 7d8983511..419224977 100644
--- a/tools/vtooldetail.cpp
+++ b/tools/vtooldetail.cpp
@@ -40,7 +40,7 @@ VToolDetail::VToolDetail(VDomDocument *doc, VContainer *data, const qint64 &id,
       sceneDetails(scene)
 {
     VDetail detail = data->GetDetail(id);
-    for (qint32 i = 0; i< detail.CountNode(); ++i)
+    for (ptrdiff_t i = 0; i< detail.CountNode(); ++i)
     {
         switch (detail[i].getTypeTool())
         {
@@ -127,7 +127,7 @@ void VToolDetail::Create(QSharedPointer<DialogDetail> &dialog, VMainGraphicsScen
 {
     VDetail detail = dialog->getDetails();
     VDetail det;
-    for (qint32 i = 0; i< detail.CountNode(); ++i)
+    for (ptrdiff_t i = 0; i< detail.CountNode(); ++i)
     {
         qint64 id = 0;
         switch (detail[i].getTypeTool())
@@ -252,7 +252,7 @@ void VToolDetail::FullUpdateFromGui(int result)
             domElement.setAttribute(AttrClosed, QString().setNum(det.getClosed()));
             domElement.setAttribute(AttrWidth, QString().setNum(det.getWidth()));
             RemoveAllChild(domElement);
-            for (qint32 i = 0; i < det.CountNode(); ++i)
+            for (ptrdiff_t i = 0; i < det.CountNode(); ++i)
             {
                AddNode(domElement, det[i]);
             }
@@ -275,7 +275,7 @@ void VToolDetail::AddToFile()
     AddAttribute(domElement, AttrClosed, detail.getClosed());
     AddAttribute(domElement, AttrWidth, detail.getWidth());
 
-    for (qint32 i = 0; i < detail.CountNode(); ++i)
+    for (ptrdiff_t i = 0; i < detail.CountNode(); ++i)
     {
        AddNode(domElement, detail[i]);
     }
@@ -371,7 +371,7 @@ void VToolDetail::contextMenuEvent(QGraphicsSceneContextMenuEvent *event)
 void VToolDetail::RemoveReferens()
 {
     VDetail detail = VAbstractTool::data.GetDetail(id);
-    for (qint32 i = 0; i< detail.CountNode(); ++i)
+    for (ptrdiff_t i = 0; i< detail.CountNode(); ++i)
     {
         doc->DecrementReferens(detail[i].getId());
     }
diff --git a/widgets/vtablegraphicsview.cpp b/widgets/vtablegraphicsview.cpp
index c6716255e..8bc74f639 100644
--- a/widgets/vtablegraphicsview.cpp
+++ b/widgets/vtablegraphicsview.cpp
@@ -50,9 +50,11 @@ void VTableGraphicsView::MirrorItem()
     {
         for ( qint32 i = 0; i < list.count(); ++i )
         {
-            QRectF itemRectOld = list.at(i)->sceneBoundingRect();
+            QGraphicsItem *item = list.at(i);
+            Q_ASSERT(item != 0);
+            QRectF itemRectOld = item->sceneBoundingRect();
             //Get the current transform
-            QTransform transform(list.at(i)->transform());
+            QTransform transform(item->transform());
 
             qreal m11 = transform.m11();    // Horizontal scaling
             qreal m12 = transform.m12();    // Vertical shearing
@@ -71,12 +73,12 @@ void VTableGraphicsView::MirrorItem()
             transform.setMatrix(m11, m12, m13, m21, m22, m23, m31, m32, m33);
 
             // Set the items transformation
-            list.at(i)->setTransform(transform);
-            QRectF itemRectNew = list.at(i)->sceneBoundingRect();
+            item->setTransform(transform);
+            QRectF itemRectNew = item->sceneBoundingRect();
             qreal dx, dy;
             dx = itemRectOld.center().x()-itemRectNew.center().x();
             dy = itemRectOld.center().y()-itemRectNew.center().y();
-            list.at(i)->moveBy(dx, dy);
+            item->moveBy(dx, dy);
         }
     }
 }
@@ -154,8 +156,10 @@ void VTableGraphicsView::rotateIt()
     {
         for ( qint32 i = 0; i < list.count(); ++i )
         {
-            list.at(i)->setTransformOriginPoint(list.at(i)->boundingRect().center());
-            list.at(i)->setRotation(list.at(i)->rotation() + 180);
+            QGraphicsItem *item = list.at(i);
+            Q_ASSERT(item != 0);
+            item->setTransformOriginPoint(item->boundingRect().center());
+            item->setRotation(item->rotation() + 180);
         }
     }
 }