From 1828edbabe57868e6b0eb7e5fba2fbd8f366077d Mon Sep 17 00:00:00 2001
From: Maciej Suminski <maciej.suminski@cern.ch>
Date: Wed, 2 Apr 2014 09:31:35 +0200
Subject: [PATCH] Refactoring EDIT_POINTS, part 3: constraints split to
 EDIT_POINTs and EDIT_LINEs.

---
 pcbnew/tools/edit_constraints.cpp | 10 +++++-----
 pcbnew/tools/edit_constraints.h   | 13 +++++--------
 pcbnew/tools/edit_points.h        | 28 +++++++++++++++++++++++++++-
 pcbnew/tools/point_editor.cpp     |  5 ++---
 4 files changed, 39 insertions(+), 17 deletions(-)

diff --git a/pcbnew/tools/edit_constraints.cpp b/pcbnew/tools/edit_constraints.cpp
index 91e14ea82d..84d417c2ab 100644
--- a/pcbnew/tools/edit_constraints.cpp
+++ b/pcbnew/tools/edit_constraints.cpp
@@ -90,8 +90,8 @@ void EC_CIRCLE::Apply( EDIT_POINT& aHandle )
 
 
 EC_CONVERGING::EC_CONVERGING( EDIT_LINE& aLine, EDIT_POINTS& aPoints ) :
-    EDIT_CONSTRAINT<EDIT_POINT>( aLine.GetOrigin() ),
-    m_colinearConstraint( NULL ), m_line( aLine ), m_editPoints( aPoints )
+    EDIT_CONSTRAINT<EDIT_LINE>( aLine ),
+    m_colinearConstraint( NULL ), m_editPoints( aPoints )
 {
     // Dragged segment endings
     EDIT_POINT& origin = aLine.GetOrigin();
@@ -128,11 +128,11 @@ EC_CONVERGING::~EC_CONVERGING()
 }
 
 
-void EC_CONVERGING::Apply( EDIT_POINT& aHandle )
+void EC_CONVERGING::Apply( EDIT_LINE& aHandle )
 {
     // The dragged segment endpoints
-    EDIT_POINT& origin = m_line.GetOrigin();
-    EDIT_POINT& end = m_line.GetEnd();
+    EDIT_POINT& origin = m_constrained.GetOrigin();
+    EDIT_POINT& end = m_constrained.GetEnd();
 
     if( m_colinearConstraint )
     {
diff --git a/pcbnew/tools/edit_constraints.h b/pcbnew/tools/edit_constraints.h
index b26c4f69f7..c86afb5a75 100644
--- a/pcbnew/tools/edit_constraints.h
+++ b/pcbnew/tools/edit_constraints.h
@@ -127,8 +127,8 @@ private:
 /**
  * Class EC_45DEGREE
  *
- * EDIT_CONSTRAINT that imposes a constraint that two to be located at angle of 45 degree
- * multiplicity.
+ * EDIT_CONSTRAINT that imposes a constraint that two points have to be located at angle of 45
+ * degree multiplicity.
  */
 class EC_45DEGREE : public EDIT_CONSTRAINT<EDIT_POINT>
 {
@@ -205,10 +205,10 @@ private:
 /**
  * Class EC_CONVERGING
  *
- * EDIT_CONSTRAINT for 3 segment: dragged and two adjacent ones, enforcing to keep their slopes
+ * EDIT_CONSTRAINT for 3 segments: dragged and two adjacent ones, enforcing to keep their slopes
  * and allows only to change ending points. Applied to zones.
  */
-class EC_CONVERGING : public EDIT_CONSTRAINT<EDIT_POINT>
+class EC_CONVERGING : public EDIT_CONSTRAINT<EDIT_LINE>
 {
 public:
     EC_CONVERGING( EDIT_LINE& aLine, EDIT_POINTS& aPoints );
@@ -216,7 +216,7 @@ public:
     virtual ~EC_CONVERGING();
 
     ///> @copydoc EDIT_CONSTRAINT::Apply()
-    virtual void Apply( EDIT_POINT& aHandle );
+    virtual void Apply( EDIT_LINE& aHandle );
 
 private:
     ///> Constraint for origin side segment.
@@ -229,9 +229,6 @@ private:
     ///> m_[origin/end]SideConstraint, so it should not be freed.
     EDIT_CONSTRAINT<EDIT_POINT>* m_colinearConstraint;
 
-    ///> Dragged segment.
-    EDIT_LINE& m_line;
-
     ///> EDIT_POINTS instance that stores currently modified lines.
     EDIT_POINTS& m_editPoints;
 
diff --git a/pcbnew/tools/edit_points.h b/pcbnew/tools/edit_points.h
index 2e5bddff62..52f54960ff 100644
--- a/pcbnew/tools/edit_points.h
+++ b/pcbnew/tools/edit_points.h
@@ -165,7 +165,7 @@ public:
     ///> Single point size in pixels
     static const int POINT_SIZE = 10;
 
-protected:
+private:
     ///> Position of EDIT_POINT
     VECTOR2I m_position;
 
@@ -221,6 +221,29 @@ public:
             m_constraint->Apply();
     }
 
+    /**
+     * Function SetConstraint()
+     *
+     * Sets a constraint for and EDIT_POINT.
+     * @param aConstraint is the constraint to be set.
+     */
+    void SetConstraint( EDIT_CONSTRAINT<EDIT_LINE>* aConstraint )
+    {
+        m_constraint.reset( aConstraint );
+    }
+
+    /**
+     * Function GetConstraint()
+     *
+     * Returns the constraint imposed on an EDIT_POINT. If there are no constraints, NULL is
+     * returned.
+     */
+    EDIT_CONSTRAINT<EDIT_LINE>* GetConstraint() const
+    {
+        return m_constraint.get();
+    }
+
+
     /**
      * Function GetOrigin()
      *
@@ -264,6 +287,9 @@ public:
 private:
     EDIT_POINT& m_origin;           ///< Origin point for a line
     EDIT_POINT& m_end;              ///< End point for a line
+
+    ///> Constraint for the point, NULL if none
+    boost::shared_ptr<EDIT_CONSTRAINT<EDIT_LINE> > m_constraint;
 };
 
 
diff --git a/pcbnew/tools/point_editor.cpp b/pcbnew/tools/point_editor.cpp
index 167b8247bf..5fd82edf53 100644
--- a/pcbnew/tools/point_editor.cpp
+++ b/pcbnew/tools/point_editor.cpp
@@ -575,12 +575,11 @@ void POINT_EDITOR::setAltConstraint( bool aEnabled )
     if( aEnabled )
     {
         EDIT_LINE* line = dynamic_cast<EDIT_LINE*>( m_dragPoint );
+
         if( line )
         {
             if( m_editPoints->GetParent()->Type() == PCB_ZONE_AREA_T )
-            {
-                m_altConstraint.reset( new EC_CONVERGING( *line, *m_editPoints ) );
-            }
+                m_altConstraint.reset( (EDIT_CONSTRAINT<EDIT_POINT>*)( new EC_CONVERGING( *line, *m_editPoints ) ) );
         }
         else
         {