Added an optional argument 'seed' to the Freestyle.Noise class constructor.

The value is used as a seed for random number generation if it is equal to
or greater than zero; otherwise, time is used as a seed.

2 files changed, 3 insertions, 3 deletions

diff --git a/source/blender/freestyle/intern/geometry/Noise.cpp b/source/blender/freestyle/intern/geometry/Noise.cpp
index 396fc3bbb47..c9a80adc5ee 100755
--- a/source/blender/freestyle/intern/geometry/Noise.cpp
+++ b/source/blender/freestyle/intern/geometry/Noise.cpp
@@ -225,11 +225,11 @@ float Noise::smoothNoise3(Vec3f& vec)
   return lerp(sz, c, d);
 }
 
-Noise::Noise()
+Noise::Noise(long seed)
 {
   int i, j, k;
   
-  seednrand(time(NULL));
+  seednrand((seed < 0) ? time(NULL) : seed);
   for (i = 0 ; i < _Noise_B_ ; i++) 
     {
       p[i] = i;
diff --git a/source/blender/freestyle/intern/geometry/Noise.h b/source/blender/freestyle/intern/geometry/Noise.h
index 00cebbb451e..f92cf07e914 100755
--- a/source/blender/freestyle/intern/geometry/Noise.h
+++ b/source/blender/freestyle/intern/geometry/Noise.h
@@ -45,7 +45,7 @@ class LIB_GEOMETRY_EXPORT Noise
  public:
 
   /*! Builds a Noise object */
-  Noise();
+  Noise(long seed = -1);
   /*! Destructor */
   ~Noise() {}