Applications: Random seed command line switch for Designer

Additionally, changed the default seed to be time(NULL),
previously the generator was not initialized.

applications/platform/designer/src/ovd_defines.h

@@ -24,6 +24,7 @@ namespace OpenViBEDesigner
 		CommandLineFlag_Define           =0x00000040,
 		CommandLineFlag_Config           =0x00000080,
 		CommandLineFlag_Kernel           =0x00000100,
+		CommandLineFlag_RandomSeed       =0x00000200
 	} ECommandLineFlag;
 
 	enum

applications/platform/designer/src/ovd_main.cpp

 #include "ovd_base.h"
 
 #include <system/Time.h>
+#include <system/CMath.h>
 
 #include <stack>
 #include <vector>
@@ -351,6 +352,10 @@ boolean parse_arguments(int argc, char** argv, SConfiguration& rConfiguration)
 		{
 			l_oConfiguration.m_eNoManageSession=CommandLineFlag_NoManageSession;
 		}
+		else if(*it=="--random-seed")
+		{
+			l_oConfiguration.m_oFlag[CommandLineFlag_RandomSeed] = *++it;
+		}
 //		else if(*it=="--define")
 //		{
 //			l_oConfiguration.m_oFlag.push_back(std::make_pair(Flag_NoGui, *++it));
@@ -397,12 +402,13 @@ int go(int argc, char ** argv)
 		cout << "  --config filename       : path to config file\n";
 		cout << "  --help                  : displays this help message and exits\n";
 		cout << "  --kernel filename       : path to openvibe kernel library\n";
-		cout << "  --no-gui                : hides the designer graphical user interface (assumes --no-color-depth-test)\n";
+		cout << "  --no-gui                : hides the designer graphical user interface (assumes --no-check-color-depth)\n";
 		cout << "  --no-check-color-depth  : does not check 24/32 bits color depth\n";
 		cout << "  --no-session-management : neither restore last used scenarios nor saves them at exit\n";
 		cout << "  --open filename         : opens a scenario (see also --no-session-management)\n";
 		cout << "  --play filename         : plays the opened scenario (see also --no-session-management)\n";
 		cout << "  --play-fast filename    : plays fast forward the opened scenario (see also --no-session-management)\n";
+		cout << "  --random-seed uint      : initialize random number generator with value, default=time(NULL)\n";
 //					l_rLogManager << LogLevel_Info << "  --define                : defines a variable in the configuration manager\n";
 		return -1;
 	}
@@ -512,6 +518,15 @@ int go(int argc, char ** argv)
 					l_pKernelContext->getVisualisationManager().initialize3DContext();
 				}
 
+				if(l_oConfiguration.m_oFlag.count(CommandLineFlag_RandomSeed)) 
+				{
+					System::Math::initializeRandomMachine(atol(l_oConfiguration.m_oFlag[CommandLineFlag_RandomSeed].c_str()));
+				} 
+				else
+				{
+					System::Math::initializeRandomMachine(time(NULL));
+				}
+
 				{
 					::CApplication app(*l_pKernelContext);
 					app.initialize(l_oConfiguration.getFlags());

modules/system/include/system/CMath.h

@@ -16,6 +16,9 @@ namespace System
 		static System::uint32 randomUInteger32(void);
 		static System::uint64 randomUInteger64(void);
 
+		// returns a value in [0,ui32upperLimit( -- i.e. ui32upperLimit not included in range
+		static System::uint32 Math::randomUInteger32WithCeiling(uint32 ui32upperLimit);
+
 		static System::int8 randomSInterger8(void);
 		static System::int16 randomSInterger16(void);
 		static System::int32 randomSInterger32(void);

modules/system/src/CMath.cpp

@@ -35,6 +35,11 @@ uint64 Math::randomUInteger64(void)
 	return (r1<<24)^(r2<<16)^(r3<<8)^(r4);
 }
 
+uint32 Math::randomUInteger32WithCeiling(uint32 ui32upperLimit)
+{
+	return static_cast<int32>(randomUInteger64()) % ui32upperLimit;
+}
+
 int8 Math::randomSInterger8(void)
 {
 	return static_cast<int8>(randomUInteger64());