Draft: Added mirror tool (more graphical version of Part Mirror) - fixes #2215

src/Mod/Arch/InitGui.py

@@ -91,7 +91,8 @@ class ArchWorkbench(Workbench):
                         "Draft_Trimex", "Draft_Upgrade", "Draft_Downgrade", "Draft_Scale",
                         "Draft_Shape2DView","Draft_Draft2Sketch","Draft_Array",
                         "Draft_Clone"]
-        self.draftextratools = ["Draft_WireToBSpline","Draft_AddPoint","Draft_DelPoint","Draft_ShapeString","Draft_PathArray"]
+        self.draftextratools = ["Draft_WireToBSpline","Draft_AddPoint","Draft_DelPoint","Draft_ShapeString",
+                                "Draft_PathArray","Draft_Mirror"]
         self.draftcontexttools = ["Draft_ApplyStyle","Draft_ToggleDisplayMode","Draft_AddToGroup",
                             "Draft_SelectGroup","Draft_SelectPlane",
                             "Draft_ShowSnapBar","Draft_ToggleGrid","Draft_UndoLine",

src/Mod/Draft/Draft.py

@@ -2456,6 +2456,41 @@ def getCloneBase(obj,strict=False):
         return False
     return obj
 
+
+def mirror(objlist,p1,p2):
+    '''mirror(objlist,p1,p2,[clone]): creates a mirrored version of the given object(s)
+    along an axis that passes through the two vectors p1 and p2.'''
+        
+    if not objlist:
+        FreeCAD.Console.PrintError(translate("draft","No object given\n"))
+        return
+    if p1 == p2:
+        FreeCAD.Console.PrintError(translate("draft","The two points are coincident\n"))
+        return
+    if not isinstance(objlist,list):
+        objlist = [objlist]
+        
+    result = []
+        
+    for obj in objlist: 
+        mir = FreeCAD.ActiveDocument.addObject("Part::Mirroring","mirror")
+        mir.Label = "Mirror of "+obj.Label
+        mir.Source = obj
+        if gui:
+            norm = FreeCADGui.ActiveDocument.ActiveView.getViewDirection().negative()
+        else:
+            norm = FreeCAD.Vector(0,0,1)
+        pnorm = p2.sub(p1).cross(norm).normalize()
+        mir.Base = p1
+        mir.Normal = pnorm
+        formatObject(mir,obj)
+        result.append(mir)
+    
+    if len(result) == 1:
+        result = result[0]
+    return result
+            
+
 def heal(objlist=None,delete=True,reparent=True):
     '''heal([objlist],[delete],[reparent]) - recreates Draft objects that are damaged,
     for example if created from an earlier version. If delete is True,

src/Mod/Draft/DraftTools.py

@@ -4409,6 +4409,129 @@ class VisGroup():
         FreeCAD.ActiveDocument.recompute()
 
 
+class Mirror(Modifier):
+    "The Draft_Mirror FreeCAD command definition"
+
+    def GetResources(self):
+        return {'Pixmap'  : 'Draft_Mirror',
+                'Accel' : "M, I",
+                'MenuText': QtCore.QT_TRANSLATE_NOOP("Draft_Mirror", "Mirror"),
+                'ToolTip': QtCore.QT_TRANSLATE_NOOP("Draft_Mirror", "Mirrors the selected objects along a line defined by two points")}
+
+    def Activated(self):
+        self.name = translate("draft","Mirror").decode("utf8")
+        Modifier.Activated(self,self.name)
+        self.ghost = None
+        if self.ui:
+            if not FreeCADGui.Selection.getSelection():
+                self.ui.selectUi()
+                msg(translate("draft", "Select an object to mirror\n"))
+                self.call = self.view.addEventCallback("SoEvent",selectObject)
+            else:
+                self.proceed()
+
+    def proceed(self):
+        if self.call: self.view.removeEventCallback("SoEvent",self.call)
+        self.sel = FreeCADGui.Selection.getSelection()
+        self.ui.pointUi(self.name)
+        self.ui.modUi()
+        self.ui.xValue.setFocus()
+        self.ui.xValue.selectAll()
+        #self.ghost = ghostTracker(self.sel) TODO: solve this (see below)
+        self.call = self.view.addEventCallback("SoEvent",self.action)
+        msg(translate("draft", "Pick start point of mirror line:\n"))
+        self.ui.isCopy.hide()
+
+    def finish(self,closed=False,cont=False):
+        if self.ghost:
+            self.ghost.finalize()
+        Modifier.finish(self)
+        if cont and self.ui:
+            if self.ui.continueMode:
+                FreeCADGui.Selection.clearSelection()
+                self.Activated()
+
+    def mirror(self,p1,p2,copy=False):
+        "mirroring the real shapes"
+        sel = '['
+        for o in self.sel:
+            if len(sel) > 1:
+                sel += ','
+            sel += 'FreeCAD.ActiveDocument.'+o.Name
+        sel += ']'
+        FreeCADGui.addModule("Draft")
+        self.commit(translate("draft","Mirror"),
+                    ['Draft.mirror('+sel+','+DraftVecUtils.toString(p1)+','+DraftVecUtils.toString(p2)+')',
+                     'FreeCAD.ActiveDocument.recompute()'])
+
+    def action(self,arg):
+        "scene event handler"
+        if arg["Type"] == "SoKeyboardEvent":
+            if arg["Key"] == "ESCAPE":
+                self.finish()
+        elif arg["Type"] == "SoLocation2Event": #mouse movement detection
+            self.point,ctrlPoint,info = getPoint(self,arg)
+            if (len(self.node) > 0):
+                last = self.node[-1]
+                if self.ghost:
+                    if self.point != last:
+                        # TODO : the following doesn't work at the moment
+                        mu = self.point.sub(last).normalize()
+                        if FreeCAD.GuiUp:
+                            mv = FreeCADGui.ActiveDocument.ActiveView.getViewDirection().negative()
+                        else:
+                            mv = FreeCAD.Vector(0,0,1)
+                        mw = mv.cross(mu)
+                        import WorkingPlane
+                        tm = WorkingPlane.plane(u=mu,v=mv,w=mw,pos=last).getPlacement().toMatrix()
+                        m = self.ghost.getMatrix()
+                        m = m.multiply(tm.inverse())
+                        m.scale(FreeCAD.Vector(1,1,-1))
+                        m = m.multiply(tm)
+                        m.scale(FreeCAD.Vector(-1,1,1))
+                        self.ghost.setMatrix(m)
+            if self.extendedCopy:
+                if not hasMod(arg,MODALT): self.finish()
+        elif arg["Type"] == "SoMouseButtonEvent":
+            if (arg["State"] == "DOWN") and (arg["Button"] == "BUTTON1"):
+                if self.point:
+                    self.ui.redraw()
+                    if (self.node == []):
+                        self.node.append(self.point)
+                        self.ui.isRelative.show()
+                        if self.ghost:
+                            self.ghost.on()
+                        msg(translate("draft", "Pick end point of mirror line:\n"))
+                        if self.planetrack:
+                            self.planetrack.set(self.point)
+                    else:
+                        last = self.node[0]
+                        if self.ui.isCopy.isChecked() or hasMod(arg,MODALT):
+                            self.mirror(last,self.point,True)
+                        else:
+                            self.mirror(last,self.point)
+                        if hasMod(arg,MODALT):
+                            self.extendedCopy = True
+                        else:
+                            self.finish(cont=True)
+
+    def numericInput(self,numx,numy,numz):
+        "this function gets called by the toolbar when valid x, y, and z have been entered there"
+        self.point = Vector(numx,numy,numz)
+        if not self.node:
+            self.node.append(self.point)
+            if self.ghost:
+                self.ghost.on()
+            msg(translate("draft", "Pick end point of mirror line:\n"))
+        else:
+            last = self.node[-1]
+            if self.ui.isCopy.isChecked():
+                self.mirror(last,self.point,True)
+            else:
+                self.mirror(last,self.point)
+            self.finish()
+
+
 #---------------------------------------------------------------------------
 # Snap tools
 #---------------------------------------------------------------------------
@@ -4620,6 +4743,7 @@ FreeCADGui.addCommand('Draft_Clone',Draft_Clone())
 FreeCADGui.addCommand('Draft_PathArray',PathArray())
 FreeCADGui.addCommand('Draft_Heal',Heal())
 FreeCADGui.addCommand('Draft_VisGroup',VisGroup())
+FreeCADGui.addCommand('Draft_Mirror',Mirror())
 
 # context commands
 FreeCADGui.addCommand('Draft_FinishLine',FinishLine())

src/Mod/Draft/DraftTrackers.py

@@ -611,6 +611,27 @@ class ghostTracker(Tracker):
         except:
             print("Error retrieving coin node")
         return sep
+        
+    def getMatrix(self):
+        r = FreeCADGui.ActiveDocument.ActiveView.getViewer().getSoRenderManager().getViewportRegion()
+        v = coin.SoGetMatrixAction(r)
+        m = self.trans.getMatrix(v)
+        if m:
+            m = m.getValue()
+            return FreeCAD.Matrix(m[0][0],m[0][1],m[0][2],m[0][3],
+                                  m[1][0],m[1][1],m[1][2],m[1][3],
+                                  m[2][0],m[2][1],m[2][2],m[2][3],
+                                  m[3][0],m[3][1],m[3][2],m[3][3])
+        else:
+            return FreeCAD.Matrix()
+        
+    def setMatrix(self,matrix):
+        m = coin.SbMatrix(matrix.A11,matrix.A12,matrix.A13,matrix.A14,
+                          matrix.A21,matrix.A22,matrix.A23,matrix.A24,
+                          matrix.A31,matrix.A32,matrix.A33,matrix.A34,
+                          matrix.A41,matrix.A42,matrix.A43,matrix.A44)
+        self.trans.setMatrix(m)
+
 
 class editTracker(Tracker):
     "A node edit tracker"

src/Mod/Draft/InitGui.py

@@ -112,7 +112,7 @@ class DraftWorkbench (Workbench):
                         "Draft_Trimex", "Draft_Upgrade", "Draft_Downgrade", "Draft_Scale",
                         "Draft_Edit","Draft_WireToBSpline","Draft_AddPoint",
                         "Draft_DelPoint","Draft_Shape2DView","Draft_Draft2Sketch","Draft_Array",
-                        "Draft_PathArray","Draft_Clone","Draft_Drawing"]
+                        "Draft_PathArray","Draft_Clone","Draft_Drawing","Draft_Mirror"]
         self.treecmdList = ["Draft_ApplyStyle","Draft_ToggleDisplayMode","Draft_AddToGroup",
                             "Draft_SelectGroup","Draft_SelectPlane",
                             "Draft_ShowSnapBar","Draft_ToggleGrid"]

src/Mod/Draft/Resources/Draft.qrc

@@ -66,6 +66,7 @@
         <file>icons/Draft_ShapeString.svg</file>
         <file>icons/Draft_Facebinder.svg</file>
         <file>icons/Draft_FlipDimension.svg</file>
+        <file>icons/Draft_Mirror.svg</file>
         <file>patterns/concrete.svg</file>
         <file>patterns/cross.svg</file>
         <file>patterns/line.svg</file>