X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftrunk%2Fsrc%2Fsynfig%2Fvaluenode_scale.cpp;h=b272d7d6b994418dc91c6a8746830e1a7b30b3c6;hb=e9a42a585dec26a8c0aabcfd6e12755f0f0f1156;hp=a6f05530a6078f944a976f477f17a057340ddf6f;hpb=756c0d29ac1742f231e6615f9a577e574e35a4af;p=synfig.git

diff --git a/synfig-core/trunk/src/synfig/valuenode_scale.cpp b/synfig-core/trunk/src/synfig/valuenode_scale.cpp
index a6f0553..b272d7d 100644
--- a/synfig-core/trunk/src/synfig/valuenode_scale.cpp
+++ b/synfig-core/trunk/src/synfig/valuenode_scale.cpp
@@ -112,6 +112,9 @@ synfig::ValueNode_Scale::~ValueNode_Scale()
 synfig::ValueBase
 synfig::ValueNode_Scale::operator()(Time t)const
 {
+	if (getenv("SYNFIG_DEBUG_VALUENODE_OPERATORS"))
+		printf("%s:%d operator()\n", __FILE__, __LINE__);
+
 	if(!value_node || !scalar)
 		throw runtime_error(strprintf("ValueNode_Scale: %s",_("One or both of my parameters aren't set!")));
 	else if(get_type()==ValueBase::TYPE_ANGLE)
@@ -138,6 +141,50 @@ synfig::ValueNode_Scale::operator()(Time t)const
 	return ValueBase();
 }
 
+synfig::ValueBase
+synfig::ValueNode_Scale::get_inverse(Time t, const synfig::Vector &target_value) const
+{
+	Real scalar_value((*scalar)(t).get(Real()));
+	if(scalar_value==0)
+			throw runtime_error(strprintf("ValueNode_Scale: %s",_("Attempting to get the inverse of a non invertible Valuenode")));
+	else
+		{
+			switch (get_type())
+			{
+				case ValueBase::TYPE_REAL:
+					return target_value.mag() / scalar_value;
+				case ValueBase::TYPE_ANGLE:
+					return Angle::tan(target_value[1] / scalar_value ,target_value[0] / scalar_value);
+				default:
+					return target_value / scalar_value;
+			}
+		}
+	return ValueBase();
+}
+
+synfig::ValueBase
+synfig::ValueNode_Scale::get_inverse(Time t, const synfig::Angle &target_value) const
+{
+	Real scalar_value((*scalar)(t).get(Real()));
+	if(scalar_value==0)
+			throw runtime_error(strprintf("ValueNode_Scale: %s",_("Attempting to get the inverse of a non invertible Valuenode")));
+	else
+		{
+			switch (get_type())
+			{
+					default:
+					return (*value_node)(t).get(Angle()) + target_value / scalar_value;
+			}
+		}
+	return ValueBase();
+}
+
+bool
+synfig::ValueNode_Scale::is_invertible(Time t) const
+{
+	Real scalar_value((*scalar)(t).get(Real()));
+	return (!scalar_value==0);
+}
 
 bool
 ValueNode_Scale::set_link_vfunc(int i,ValueNode::Handle value)