From a66f7cb9bc128fdc442d9f84ba60cb74b6ef822b Mon Sep 17 00:00:00 2001
From: Eric Christiansen <ericmartinchristiansen@gmail.com>
Date: Fri, 22 Feb 2013 13:28:20 -0800
Subject: [PATCH] allows building with -std=c++11 under G++

---
 modules/softcascade/src/_random.hpp                |  8 +++++++-
 .../softcascade/src/integral_channel_builder.cpp   | 14 ++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/modules/softcascade/src/_random.hpp b/modules/softcascade/src/_random.hpp
index 79c1990c0..cf12037aa 100644
--- a/modules/softcascade/src/_random.hpp
+++ b/modules/softcascade/src/_random.hpp
@@ -67,7 +67,13 @@ namespace cv { namespace softcascade { namespace internal
 struct Random
 {
     typedef std::mt19937 engine;
+// True if we're using C++11.
+#if __cplusplus >= 201103L
+    // C++11 removes uniform_int.
+    typedef std::uniform_int_distribution<int> uniform;
+#else
     typedef std::uniform_int<int> uniform;
+#endif
 };
 }}}
 
@@ -149,4 +155,4 @@ struct Random
 #define DCHANNELS_SEED         314152314LU
 #define DX_DY_SEED             65633343LU
 
-#endif
\ No newline at end of file
+#endif
diff --git a/modules/softcascade/src/integral_channel_builder.cpp b/modules/softcascade/src/integral_channel_builder.cpp
index c441fa820..ae18e54d5 100644
--- a/modules/softcascade/src/integral_channel_builder.cpp
+++ b/modules/softcascade/src/integral_channel_builder.cpp
@@ -233,8 +233,22 @@ void ChannelFeaturePool::fill(int desired)
         int x = xRand(eng);
         int y = yRand(eng);
 
+#if __cplusplus >= 201103L
+        // The interface changed slightly going from uniform_int to
+        // uniform_int_distribution. See this page to understand
+        // the old behavior:
+        // http://www.boost.org/doc/libs/1_47_0/boost/random/uniform_int.hpp
+        int w = 1 + wRand(
+	  eng,
+          // This extra "- 1" appears to be necessary, based on the Boost docs.
+	  Random::uniform::param_type(0, (model.width  - x - 1) - 1));
+        int h = 1 + hRand(
+	  eng,
+	  Random::uniform::param_type(0, (model.height  - y - 1) - 1));
+#else
         int w = 1 + wRand(eng, model.width  - x - 1);
         int h = 1 + hRand(eng, model.height - y - 1);
+#endif
 
         CV_Assert(w > 0);
         CV_Assert(h > 0);