From dc6e79c298ff2f7f95bfc334e56eaee9c9e14c73 Mon Sep 17 00:00:00 2001
From: Thomas Fischer <thomas.fischer@ufz.de>
Date: Thu, 19 Feb 2015 14:16:57 +0100
Subject: [PATCH] [MaL] Point3d::operator< needed for std::sort.
---
MathLib/Point3d.cpp | 30 ++++++++++++++++++++++++++++++
MathLib/Point3d.h | 2 ++
2 files changed, 32 insertions(+)
diff --git a/MathLib/Point3d.cpp b/MathLib/Point3d.cpp
index dd2b543e505..7d929ef1765 100644
--- a/MathLib/Point3d.cpp
+++ b/MathLib/Point3d.cpp
@@ -15,6 +15,36 @@
#include "Point3d.h"
+bool operator< (const MathLib::Point3d& p0, const MathLib::Point3d& p1)
+{
+ if (p0[0] > p1[0]) {
+ return false;
+ } else {
+ if (p0[0] < p1[0]) {
+ return true;
+ }
+ }
+ // => p0[0] == p1[0]
+
+ if (p0[1] > p1[1]) {
+ return false;
+ } else {
+ if (p0[1] < p1[1]) {
+ return true;
+ }
+ }
+ // => p0[1] == p1[1]
+
+ if (p0[2] > p1[2]) {
+ return false;
+ } else {
+ if (p0[2] < p1[2]) {
+ return true;
+ }
+ return false; // p0 == p1
+ }
+}
+
bool operator<= (const MathLib::Point3d& p0, const MathLib::Point3d& p1)
{
if (p0[0] > p1[0]) {
diff --git a/MathLib/Point3d.h b/MathLib/Point3d.h
index 51d5e67ca8c..75368621aa8 100644
--- a/MathLib/Point3d.h
+++ b/MathLib/Point3d.h
@@ -23,6 +23,8 @@ namespace MathLib
typedef MathLib::TemplatePoint<double,3> Point3d;
} // end namespace MathLib
+bool operator< (MathLib::Point3d const & p0, MathLib::Point3d const & p1);
+
/**
* lexicographic comparison of points
*/
--
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