From a83ece88fd47cf8b3215c04cc9380155e1eb2e0e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tomasz=20W=C5=82ostowski?= <tomasz.wlostowski@cern.ch>
Date: Thu, 14 Dec 2017 02:14:35 +0100
Subject: [PATCH] poly2tri use std::runtime_error, fixes builds on many Linux
 distributions

---
 polygon/poly2tri/common/shapes.cc | 10 +++++-----
 polygon/poly2tri/sweep/sweep.cc   |  6 +++---
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/polygon/poly2tri/common/shapes.cc b/polygon/poly2tri/common/shapes.cc
index 1890776ef1..2c5508a6c6 100644
--- a/polygon/poly2tri/common/shapes.cc
+++ b/polygon/poly2tri/common/shapes.cc
@@ -53,7 +53,7 @@ void Triangle::MarkNeighbor(Point* p1, Point* p2, Triangle* t)
   else if ((p1 == points_[0] && p2 == points_[1]) || (p1 == points_[1] && p2 == points_[0]))
     neighbors_[2] = t;
   else
-    throw std::invalid_argument("Polygon contains overlapping hole vertices.");
+    throw std::runtime_error("Polygon contains overlapping hole vertices.");
 }
 
 // Exhaustive search to update neighbor pointers
@@ -151,7 +151,7 @@ void Triangle::Legalize(Point& opoint, Point& npoint)
     points_[2] = points_[1];
     points_[1] = &npoint;
   } else {
-      throw std::invalid_argument("Polygon contains overlapping hole vertices.");
+      throw std::runtime_error("Polygon contains overlapping hole vertices.");
   }
 }
 
@@ -164,7 +164,7 @@ int Triangle::Index(const Point* p)
   } else if (p == points_[2]) {
     return 2;
   }
-  throw std::invalid_argument("Polygon contains overlapping hole vertices.");
+  throw std::runtime_error("Polygon contains overlapping hole vertices.");
   return 0;
 }
 
@@ -224,7 +224,7 @@ Point* Triangle::PointCW(Point& point)
   } else if (&point == points_[2]) {
     return points_[1];
   }
-  throw std::invalid_argument("Polygon contains overlapping hole vertices.");
+  throw std::runtime_error("Polygon contains overlapping hole vertices.");
   return NULL;
 }
 
@@ -238,7 +238,7 @@ Point* Triangle::PointCCW(Point& point)
   } else if (&point == points_[2]) {
     return points_[0];
   }
-  throw std::invalid_argument("Polygon contains overlapping hole vertices.");
+  throw std::runtime_error("Polygon contains overlapping hole vertices.");
   return NULL;
 }
 
diff --git a/polygon/poly2tri/sweep/sweep.cc b/polygon/poly2tri/sweep/sweep.cc
index 6afa6d7b83..7d4e6adbe0 100644
--- a/polygon/poly2tri/sweep/sweep.cc
+++ b/polygon/poly2tri/sweep/sweep.cc
@@ -701,7 +701,7 @@ void Sweep::FlipEdgeEvent(SweepContext& tcx, Point& ep, Point& eq, Triangle* t,
   Point& op = *ot->OppositePoint(*t, p);
 
   if (ot == nullptr) {
-    throw std::invalid_argument("Polygon contains overlapping hole vertices.");
+    throw std::runtime_error("Polygon contains overlapping hole vertices.");
   }
 
   if (InScanArea(p, *t->PointCCW(p), *t->PointCW(p), op)) {
@@ -761,7 +761,7 @@ Point& Sweep::NextFlipPoint(Point& ep, Point& eq, Triangle& ot, Point& op)
     // Left
     return *ot.PointCW(op);
   } else{
-    throw std::invalid_argument("Polygon contains overlapping hole vertices.");
+    throw std::runtime_error("Polygon contains overlapping hole vertices.");
     return ep;     // Arbitrary return val -- fixes warning
   }
 }
@@ -773,7 +773,7 @@ void Sweep::FlipScanEdgeEvent(SweepContext& tcx, Point& ep, Point& eq, Triangle&
   Point& op = *ot->OppositePoint(t, p);
 
   if (ot == NULL) {
-      throw std::invalid_argument("Polygon contains overlapping hole vertices.");
+      throw std::runtime_error("Polygon contains overlapping hole vertices.");
   }
 
   if (InScanArea(eq, *flip_triangle.PointCCW(eq), *flip_triangle.PointCW(eq), op)) {