Upgrade to Clipper 6.4.2

ThirdParty/clipper/clipper.cpp

@@ -1,10 +1,10 @@
 /*******************************************************************************
 *                                                                              *
 * Author    :  Angus Johnson                                                   *
-* Version   :  6.4.0                                                           *
+* Version   :  6.4.2                                                           *
-* Date      :  2 July 2015                                                     *
+* Date      :  27 February 2017                                                *
 * Website   :  http://www.angusj.com                                           *
-* Copyright :  Angus Johnson 2010-2015                                         *
+* Copyright :  Angus Johnson 2010-2017                                         *
 *                                                                              *
 * License:                                                                     *
 * Use, modification & distribution is subject to Boost Software License Ver 1. *
@@ -179,7 +179,7 @@ int PolyTree::Total() const
 // PolyNode methods ...
 //------------------------------------------------------------------------------
 
-PolyNode::PolyNode(): Childs(), Parent(0), Index(0), m_IsOpen(false)
+PolyNode::PolyNode(): Parent(0), Index(0), m_IsOpen(false)
 {
 }
 //------------------------------------------------------------------------------
@@ -1866,7 +1866,7 @@ OutPt* Clipper::AddLocalMinPoly(TEdge *e1, TEdge *e2, const IntPoint &Pt)
         prevE = e->PrevInAEL;
   }
 
-  if (prevE && prevE->OutIdx >= 0)
+  if (prevE && prevE->OutIdx >= 0 && prevE->Top.Y < Pt.Y && e->Top.Y < Pt.Y) 
   {
     cInt xPrev = TopX(*prevE, Pt.Y);
     cInt xE = TopX(*e, Pt.Y);
@@ -2713,6 +2713,10 @@ void Clipper::ProcessHorizontal(TEdge *horzEdge)
 
     if (horzEdge->OutIdx >= 0 && !IsOpen)  //note: may be done multiple times
 		{
+#ifdef use_xyz
+			if (dir == dLeftToRight) SetZ(e->Curr, *horzEdge, *e);
+			else SetZ(e->Curr, *e, *horzEdge);
+#endif      
 			op1 = AddOutPt(horzEdge, e->Curr);
 			TEdge* eNextHorz = m_SortedEdges;
 			while (eNextHorz)
@@ -3039,6 +3043,9 @@ void Clipper::ProcessEdgesAtTopOfScanbeam(const cInt topY)
       {
         e->Curr.X = TopX( *e, topY );
         e->Curr.Y = topY;
+#ifdef use_xyz
+		e->Curr.Z = topY == e->Top.Y ? e->Top.Z : (topY == e->Bot.Y ? e->Bot.Z : 0);
+#endif
 	  }
 
       //When StrictlySimple and 'e' is being touched by another edge, then
@@ -3663,7 +3670,7 @@ void Clipper::FixupFirstLefts3(OutRec* OldOutRec, OutRec* NewOutRec)
   {
     OutRec* outRec = m_PolyOuts[i];
     OutRec* firstLeft = ParseFirstLeft(outRec->FirstLeft);
-    if (outRec->Pts && outRec->FirstLeft == OldOutRec)
+    if (outRec->Pts && firstLeft == OldOutRec)
       outRec->FirstLeft = NewOutRec;
   }
 }
@@ -4322,10 +4329,10 @@ double DistanceFromLineSqrd(
   const IntPoint& pt, const IntPoint& ln1, const IntPoint& ln2)
 {
   //The equation of a line in general form (Ax + By + C = 0)
-  //given 2 points (x<>,y<>) & (x<>,y<>) is ...
+  //given 2 points (x<>,y<>) & (x<>,y<>) is ...
-  //(y<> - y<>)x + (x<> - x<>)y + (y<> - y<>)x<> - (x<> - x<>)y<> = 0
+  //(y<> - y<>)x + (x<> - x<>)y + (y<> - y<>)x<> - (x<> - x<>)y<> = 0
-  //A = (y<> - y<>); B = (x<> - x<>); C = (y<> - y<>)x<> - (x<> - x<>)y<>
+  //A = (y<> - y<>); B = (x<> - x<>); C = (y<> - y<>)x<> - (x<> - x<>)y<>
-  //perpendicular distance of point (x<>,y<>) = (Ax<41> + By<42> + C)/Sqrt(A<> + B<>)
+  //perpendicular distance of point (x<>,y<>) = (Ax<41> + By<42> + C)/Sqrt(A<> + B<>)
   //see http://en.wikipedia.org/wiki/Perpendicular_distance
   double A = double(ln1.Y - ln2.Y);
   double B = double(ln2.X - ln1.X);

ThirdParty/clipper/clipper.hpp

@@ -1,10 +1,10 @@
 /*******************************************************************************
 *                                                                              *
 * Author    :  Angus Johnson                                                   *
-* Version   :  6.4.0                                                           *
+* Version   :  6.4.2                                                           *
-* Date      :  2 July 2015                                                     *
+* Date      :  27 February 2017                                                *
 * Website   :  http://www.angusj.com                                           *
-* Copyright :  Angus Johnson 2010-2015                                         *
+* Copyright :  Angus Johnson 2010-2017                                         *
 *                                                                              *
 * License:                                                                     *
 * Use, modification & distribution is subject to Boost Software License Ver 1. *
@@ -34,7 +34,7 @@
 #ifndef clipper_hpp
 #define clipper_hpp
 
-#define CLIPPER_VERSION "6.2.6"
+#define CLIPPER_VERSION "6.4.2"
 
 //use_int32: When enabled 32bit ints are used instead of 64bit ints. This
 //improve performance but coordinate values are limited to the range +/- 46340
@@ -146,6 +146,7 @@ public:
     bool IsOpen() const;
     int ChildCount() const;
 private:
+    //PolyNode& operator =(PolyNode& other); 
     unsigned Index; //node index in Parent.Childs
     bool m_IsOpen;
     JoinType m_jointype;
@@ -159,11 +160,12 @@ private:
 class PolyTree: public PolyNode
 { 
 public:
-    ~PolyTree(){Clear();};
+    ~PolyTree(){ Clear(); };
     PolyNode* GetFirst() const;
     void Clear();
     int Total() const;
 private:
+  //PolyTree& operator =(PolyTree& other);
   PolyNodes AllNodes;
     friend class Clipper; //to access AllNodes
 };