When cloning a 'random' valuenode with a constant, non-exported seed, use a new rando...

[synfig.git] / synfig-core / trunk / src / modules / mod_noise / valuenode_random.cpp

diff --git a/synfig-core/trunk/src/modules/mod_noise/valuenode_random.cpp b/synfig-core/trunk/src/modules/mod_noise/valuenode_random.cpp
index 3bf6ab4..24bfe23 100644 (file)
--- a/synfig-core/trunk/src/modules/mod_noise/valuenode_random.cpp
+++ b/synfig-core/trunk/src/modules/mod_noise/valuenode_random.cpp
@@ -275,3 +275,25 @@ ValueNode_Random::check_type(ValueBase::Type type)
                type==ValueBase::TYPE_TIME              ||
                type==ValueBase::TYPE_VECTOR    ;
 }
+
+ValueNode*
+ValueNode_Random::clone(const GUID& deriv_guid)const
+{
+       ValueNode_Random* ret = (ValueNode_Random*)LinkableValueNode::clone(deriv_guid);
+       ret->randomize_seed();
+       return ret;
+}
+
+void
+ValueNode_Random::randomize_seed()
+{
+       int i = get_link_index_from_name("seed");
+       ValueNode::Handle link = get_link_vfunc(i);
+       if(!link->is_exported() && link->get_name() == "constant")
+       {
+               int seed = time(NULL) + rand();
+               if (seed < 0) seed = -seed;
+               random.set_seed(seed);
+               set_link(i, ValueNode_Const::create(seed));
+       }
+}