From 38ced92d7e8995bc06bb45a01d45bd6e2e32079a Mon Sep 17 00:00:00 2001
From: Axel Naumann <Axel.Naumann@cern.ch>
Date: Sat, 26 Aug 2017 12:09:12 -0700
Subject: [PATCH] Add unary -op for UDLs to work nicely.
---
graf2d/gpad/v7/inc/ROOT/TPadCoord.hxx | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/graf2d/gpad/v7/inc/ROOT/TPadCoord.hxx b/graf2d/gpad/v7/inc/ROOT/TPadCoord.hxx
index bf7955b2028..2e0a392c03a 100644
--- a/graf2d/gpad/v7/inc/ROOT/TPadCoord.hxx
+++ b/graf2d/gpad/v7/inc/ROOT/TPadCoord.hxx
@@ -33,6 +33,8 @@ protected:
CoordSysBase(double val): fVal(val) {}
DERIVED &ToDerived() { return static_cast<DERIVED &>(*this); }
+ DERIVED operator-() { return DERIVED(-fVal); }
+
friend DERIVED operator+(DERIVED lhs, DERIVED rhs) { return DERIVED{lhs.fVal + rhs.fVal}; }
friend DERIVED operator-(DERIVED lhs, DERIVED rhs) { return DERIVED{lhs.fVal - rhs.fVal}; }
friend double operator/(DERIVED lhs, DERIVED rhs) { return lhs.fVal / rhs.fVal; }
@@ -124,6 +126,11 @@ public:
return TPadCoord{lhs.fNormal - rhs.fNormal, lhs.fPixel - rhs.fPixel, lhs.fUser - rhs.fUser};
}
+ /// Unary -.
+ TPadCoord operator-() {
+ return TPadCoord(-fNormal, -fPixel, -fUser);
+ }
+
/// Add a `TPadCoord`.
TPadCoord &operator+=(const TPadCoord &rhs)
{
--
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