Fixing color randomizer

src/VTKWriter/VTKWriter_vector_box.hpp

@@ -305,8 +305,7 @@ class VTKWriter<vector,VECTOR_BOX>
 	std::string get_cell_data_list()
 	{
 		// random engine
-		std::default_random_engine generator;
-		std::uniform_real_distribution<float> d(0.0,1.0);
+		SimpleRNG rng;
 
 		//! vertex node output string
 		std::string v_out;
@@ -322,7 +321,7 @@ class VTKWriter<vector,VECTOR_BOX>
 			while (it.isNext())
 			{
 				// write a color
-				v_out += getColor(col_group,d,generator).toString() + " 1.0" + "\n";
+				v_out += getColor(col_group,rng).toString() + " 1.0" + "\n";
 
 				++it;
 			}

src/util.hpp

@@ -7,6 +7,8 @@
 
 #include "config.h"
 
+#include "util/SimpleRNG.hpp"
+
 #ifndef UTIL_HPP_
 #define UTIL_HPP_
 
@@ -65,11 +67,11 @@ struct RGB
  *
  */
 
-static inline struct RGB getColor(int group, std::uniform_real_distribution<float> & d, std::default_random_engine & g)
+static inline struct RGB getColor(int group, SimpleRNG & d)
 {
 	struct RGB col;
 
-	float s = d(g);
+	float s = (float)d.GetUniform();
 
 	group = group % 12;