Improve tool Point on middle visualization.

Show point on middle position when creating a point.

--HG--
branch : develop

src/libs/vtools/dialogs/tools/dialogalongline.cpp

@@ -189,11 +189,11 @@ void DialogAlongLine::ChosenObject(quint32 id, const SceneObject &type)
                         if (flagError)
                         {
                             line->setObject2Id(id);
-                            line->RefreshGeometry();
                             if (buildMidpoint)
                             {
                                 SetFormula(currentLength + QLatin1String("/2"));
                             }
+                            line->RefreshGeometry();
                             prepare = true;
                             this->setModal(true);
                             this->show();
@@ -270,6 +270,9 @@ void DialogAlongLine::Build(const Tool &type)
     if (type == Tool::Midpoint)
     {
         buildMidpoint = true;
+        VisToolAlongLine *line = qobject_cast<VisToolAlongLine *>(vis);
+        SCASSERT(line != nullptr)
+        line->setMidPointMode(buildMidpoint);
     }
 }
 

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

@@ -45,8 +45,14 @@
 
 //---------------------------------------------------------------------------------------------------------------------
 VisToolAlongLine::VisToolAlongLine(const VContainer *data, QGraphicsItem *parent)
-    : VisLine(data, parent), object2Id(NULL_ID), point(nullptr), lineP1(nullptr), lineP2(nullptr), line(nullptr),
+    : VisLine(data, parent),
-      length(0)
+      object2Id(NULL_ID),
+      point(nullptr),
+      lineP1(nullptr),
+      lineP2(nullptr),
+      line(nullptr),
+      length(0),
+      m_midPointMode(false)
 {
     this->mainColor = Qt::red;
     this->setZValue(2);// Show on top real tool
@@ -69,6 +75,12 @@ void VisToolAlongLine::setLength(const QString &expression)
     length = FindLengthFromUser(expression, Visualization::data->DataVariables());
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void VisToolAlongLine::setMidPointMode(bool midPointMode)
+{
+    m_midPointMode = midPointMode;
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 void VisToolAlongLine::RefreshGeometry()
 {
@@ -79,7 +91,14 @@ void VisToolAlongLine::RefreshGeometry()
 
         if (object2Id <= NULL_ID)
         {
-            DrawLine(line, QLineF(static_cast<QPointF>(*first), Visualization::scenePos), supportColor);
+            QLineF cursorLine (static_cast<QPointF>(*first), Visualization::scenePos);
+            DrawLine(line, cursorLine, supportColor);
+
+            if (m_midPointMode)
+            {
+                cursorLine.setLength(cursorLine.length()/2.0);
+                DrawPoint(lineP2,  cursorLine.p2(), supportColor);
+            }
         }
         else
         {

src/libs/vtools/visualization/line/vistoolalongline.h

@@ -49,6 +49,7 @@ public:
     virtual void RefreshGeometry() Q_DECL_OVERRIDE;
     void         setObject2Id(const quint32 &value);
     void         setLength(const QString &expression);
+    void         setMidPointMode(bool midPointMode);
     virtual int  type() const Q_DECL_OVERRIDE {return Type;}
     enum { Type = UserType + static_cast<int>(Vis::ToolAlongLine)};
 private:
@@ -59,6 +60,7 @@ private:
     VScaledEllipse *lineP2;
     VScaledLine    *line;
     qreal           length;
+    bool            m_midPointMode;
 };
 
 #endif // VISTOOLALONGLINE_H