Add optional debugging for calls to ValueNode_*::operator(). export SYNFIG_DEBUG_VAL...

[synfig.git] / synfig-core / trunk / src / synfig / valuenode_blinecalctangent.cpp

diff --git a/synfig-core/trunk/src/synfig/valuenode_blinecalctangent.cpp b/synfig-core/trunk/src/synfig/valuenode_blinecalctangent.cpp
index 74b4b57..3a3c2cc 100644 (file)
--- a/synfig-core/trunk/src/synfig/valuenode_blinecalctangent.cpp
+++ b/synfig-core/trunk/src/synfig/valuenode_blinecalctangent.cpp
@@ -90,6 +90,9 @@ ValueNode_BLineCalcTangent::~ValueNode_BLineCalcTangent()
 ValueBase
 ValueNode_BLineCalcTangent::operator()(Time t, Real amount)const
 {
+       if (getenv("SYNFIG_DEBUG_VALUENODE_OPERATORS"))
+               printf("%s:%d operator()\n", __FILE__, __LINE__);
+
        const std::vector<ValueBase> bline((*bline_)(t).get_list());
        handle<ValueNode_BLine> bline_value_node(bline_);
        const bool looped(bline_value_node->get_loop());