From cddb183af53511eb1fda73c6365ee1b86029393f Mon Sep 17 00:00:00 2001
From: Isaak Lim <Isaak.Lim@rwth-aachen.de>
Date: Tue, 18 Sep 2012 12:24:42 +0000
Subject: [PATCH] added some OpenMP for loops for the generation of samples

refs #1005

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@680 fdac6126-5c0c-442c-9429-916003d36597
---
 src/OpenMesh/Tools/Decimater/McDecimaterT.cc | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/OpenMesh/Tools/Decimater/McDecimaterT.cc b/src/OpenMesh/Tools/Decimater/McDecimaterT.cc
index f05289d8..48337e21 100644
--- a/src/OpenMesh/Tools/Decimater/McDecimaterT.cc
+++ b/src/OpenMesh/Tools/Decimater/McDecimaterT.cc
@@ -60,6 +60,10 @@
 #  include <cfloat>
 #endif
 
+#ifdef USE_OPENMP
+#include <omp.h>
+#endif
+
 //== NAMESPACE ===============================================================
 
 namespace OpenMesh {
@@ -110,6 +114,9 @@ size_t McDecimaterT<Mesh>::decimate(size_t _n_collapses) {
     double bestEnergy = FLT_MAX;
 
     // Generate random samples for collapses
+#ifdef USE_OPENMP
+#pragma omp parallel for shared(bestEnergy, bestHandle)
+#endif
     for ( unsigned int i = 0; i < randomSamples_; ++i) {
 
       // Random halfedge handle
@@ -201,6 +208,9 @@ size_t McDecimaterT<Mesh>::decimate_to_faces(size_t _nv, size_t _nf) {
 
     // Generate random samples for collapses
     unsigned int legalCollapses = 0;
+#ifdef USE_OPENMP
+#pragma omp parallel for shared(bestEnergy, bestHandle, legalCollapses)
+#endif
     for ( unsigned int i = 0; i < randomSamples_; ++i) {
 
       // Random halfedge handle