Attempted to divide by zero in PluginInterfaces.V2 when dealing with spread of spreads

vvvv beta bug
1

Hello!
I have

[Input("Key")](Input("Key"))
public ISpread<ISpread<string>> FKey;

[Input("Write From")](Input("Write From"))
public ISpread<ISpread<int>> FFrom;

and i do this at some point (this is the line which the exception references):

temp.Fields[FKey[i](FKey[i)[j](j)].Position = FFrom[i](i)[j](j);

and in some cases when the “Write From” (FFRom) pin should have a 0 binsize this is what i get:

quote
System.DivideByZeroException: Attempted to divide by zero.
at VVVV.Utils.VMath.VMath.Zmod(Int32 z, Int32 d)
at VVVV.PluginInterfaces.V2.Spread`1.get_Item(Int32 index)
at VVVV.Nodes.RawUpdateObjectNode.Evaluate(Int32 spreadMax) in e:\vvvv\mcropack\VVVV.Packs.mcro\src\RawObject\RawObject\ObjectManagement.cs:line 249
at VVVV.Hosting.IO.PluginContainer.Evaluate(Int32 spreadMax)

“ObjectManagement.cs” is my stuff however i suspect the error is somewhere in “get_Item(Int32 index)” or “Zmod(Int32 z, Int32 d)”
can somebody help me?

2

You need to check FFrom.SliceCount before accessing FFrom(i) and FFrom(i).SliceCount before accessing FFrom(i)(j). One of them is zero and that’s why you get the exception.