» creating and deleting pins at runtime
This site relies heavily on Javascript. You should enable it if you want the full experience. Learn more.

creating and deleting pins at runtime

there're situations were one needs to create pins at runtime depending on the value of some config pin. for example consider the Expr (Value) node. it creates input pins for each given variable name.

with beta28 coming up this kind of task got considerably easier to do with a new interface called IIOFactory.
it basically provides a method to create so called IO containers, containing the actual "view" on the pin data (such as ISpread) and controlling the lifetime of it.

say we want to create an ISpread<ISpread<T>> during runtime, we do something like this:

[Import] 
IIOFactory FIOFactory;
...
var inputAttribute = new InputAttribute("Input Foo");
var inputFooContainer = FIOFactory.CreateIOContainer<ISpread<ISpread<T>>>(inputAttribute);
var inputFooSpread = inputFooContainer.IOObject;
...

in case we decide to get rid of those two pins which are used by inputFooSpread we simply call Dispose on the associated IO container:

...
inputFooContainer.Dispose();
...

for details and as a starting point have a look at the new dynamic plugin template contained in beta28, which creates inputs and outputs on the fly, when changing the associated config pins.

Elias, Tuesday, Aug 7th 2012 Digg | Tweet | Delicious 0 comments  
  • 1

anonymous user login

Shoutbox

~3d ago

fleg: This Tuesday, Cologne: exhibition opening of "interwoven", textile disinformation patterns created with vvvv. https://fleg.de/news/exhibition-interwoven

~16d ago

manuelgonzalvez: Assimp nodes all broken afted Win Update w/exception "COM object that has been separated from its underlying RCW(...)"

~16d ago

manuelgonzalvez: @levi thanks would love to! anyway managed to get something similar working based on forum search and anthokio's patches.

~17d ago

levi: @ravasquez thanks. 31.2 x86 verrion worked. @manuelgonzalvez i have a dx11 projectTexture if u a want.

~18d ago

manuelgonzalvez: Anyone has a dx11 port of "projectedTexture" dx9 fx for projection mapping?

~18d ago

manuelgonzalvez: Anyone has a dx11 port of "projectedTexture" dx9 fx for projection mapping?

~19d ago

ravazquez: @levi not sure bout the ImagePack, but I believe VL.OpenCV should give you the same tools and should work with beta just fine

~19d ago

levi: anyone knows of a VVVVpacks.image that works for elliot's projector calibration patches?x64,dx11. always crashes v4 on solve.

~26d ago

Lorenz: VJing with GIFS: https://lorenzpotthast.de/gifjockey/ A fun little side project, that I first prototyped in v4 and now turned web-based ;)

~1mth ago

schlonzo: finally fixed in 4.8 nice1