Sketcher: New Setting for improved dragging mode

src/Mod/Sketcher/App/Sketch.cpp

@@ -67,7 +67,7 @@ using namespace Part;
 TYPESYSTEM_SOURCE(Sketcher::Sketch, Base::Persistence)
 
 Sketch::Sketch()
-: SolveTime(0), GCSsys(), ConstraintsCounter(0), isInitMove(false), isFine(true),
+: SolveTime(0), RecalculateInitialSolutionWhileMovingPoint(false), GCSsys(), ConstraintsCounter(0), isInitMove(false), isFine(true),
 defaultSolver(GCS::DogLeg),defaultSolverRedundant(GCS::DogLeg),debugMode(GCS::Minimal)
 {
 }
@@ -3199,7 +3199,7 @@ int Sketch::movePoint(int geoId, PointPos pos, Base::Vector3d toPoint, bool rela
         moveStep = 0;
     }
     else {
-        if(!relative) {
+        if(!relative && RecalculateInitialSolutionWhileMovingPoint) {
             if (moveStep == 0) {
                 moveStep = (toPoint-initToPoint).Length();
             }

src/Mod/Sketcher/App/Sketch.h

@@ -348,6 +348,7 @@ public:
     };
 
     float SolveTime;
+    bool RecalculateInitialSolutionWhileMovingPoint;
 
 protected:
     /// container element to store and work with the geometric elements of this sketch

src/Mod/Sketcher/Gui/SketcherSettings.cpp

@@ -101,6 +101,7 @@ void SketcherSettings::saveSettings()
     ui->continueMode->onSave();
     ui->constraintMode->onSave();
     ui->checkBoxAdvancedSolverTaskBox->onSave();
+    ui->checkBoxRecalculateInitialSolutionWhileDragging->onSave();
     ui->checkBoxTVHideDependent->onSave();
     ui->checkBoxTVShowLinks->onSave();
     ui->checkBoxTVShowSupport->onSave();
@@ -126,6 +127,7 @@ void SketcherSettings::loadSettings()
     ui->continueMode->onRestore();
     ui->constraintMode->onRestore();
     ui->checkBoxAdvancedSolverTaskBox->onRestore();
+    ui->checkBoxRecalculateInitialSolutionWhileDragging->onRestore();
     ui->checkBoxTVHideDependent->onRestore();
     ui->checkBoxTVShowLinks->onRestore();
     ui->checkBoxTVShowSupport->onRestore();

src/Mod/Sketcher/Gui/SketcherSettings.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>427</width>
-    <height>492</height>
+    <width>602</width>
+    <height>653</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -306,23 +306,10 @@
      </layout>
     </widget>
    </item>
-   <item row="6" column="0">
-    <spacer name="verticalSpacer">
-     <property name="orientation">
-      <enum>Qt::Vertical</enum>
-     </property>
-     <property name="sizeHint" stdset="0">
-      <size>
-       <width>20</width>
-       <height>40</height>
-      </size>
-     </property>
-    </spacer>
-   </item>
    <item row="2" column="0">
     <widget class="QGroupBox" name="groupBox_2">
      <property name="title">
-      <string>Sketch Solver</string>
+      <string>Sketcher Solver</string>
      </property>
      <layout class="QGridLayout" name="gridLayout_4">
       <item row="0" column="0">
@@ -341,6 +328,31 @@
      </layout>
     </widget>
    </item>
+   <item row="3" column="0">
+    <widget class="QGroupBox" name="groupBox_4">
+     <property name="title">
+      <string>Dragging Performance</string>
+     </property>
+     <layout class="QGridLayout" name="gridLayout_5" rowstretch="0,0" columnstretch="0,0">
+      <item row="1" column="0" colspan="2">
+       <widget class="Gui::PrefCheckBox" name="checkBoxRecalculateInitialSolutionWhileDragging">
+        <property name="text">
+         <string>Improve solving while dragging (requires to re-enter edit mode to take effect)</string>
+        </property>
+        <property name="checked">
+         <bool>true</bool>
+        </property>
+        <property name="prefEntry" stdset="0">
+         <cstring>RecalculateInitialSolutionWhileDragging</cstring>
+        </property>
+        <property name="prefPath" stdset="0">
+         <cstring>Mod/Sketcher</cstring>
+        </property>
+       </widget>
+      </item>
+     </layout>
+    </widget>
+   </item>
   </layout>
  </widget>
  <customwidgets>

src/Mod/Sketcher/Gui/ViewProviderSketch.cpp

@@ -334,7 +334,6 @@ ViewProviderSketch::ViewProviderSketch()
     
     //rubberband selection
     rubberband = new Gui::Rubberband();
-
 }
 
 ViewProviderSketch::~ViewProviderSketch()
@@ -5257,6 +5256,11 @@ bool ViewProviderSketch::setEdit(int ModNum)
     connectRedoDocument = Gui::Application::Instance->activeDocument()
         ->signalRedoDocument.connect(boost::bind(&ViewProviderSketch::slotRedoDocument, this, _1));
 
+    // Enable solver initial solution update while dragging.
+    ParameterGrp::handle hGrp2 = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/Mod/Sketcher");
+
+    getSketchObject()->getSolvedSketch().RecalculateInitialSolutionWhileMovingPoint = hGrp2->GetBool("RecalculateInitialSolutionWhileDragging",true);
+
     return true;
 }