topic Re: Apply a saved view filter? in Revit API Forum

Apply a saved view filter?

Anonymous — Sat, 30 Jan 2016 00:11:07 GMT

Hi,

I've got a bunch of filter conditions (about 75) that I need to configure for a given view, with certain parameters. I'm thinking this should be fairly simple via the API. Basically the process is:

1. Add my pre-constructed view filters to the current view (Vis/Graph -> Filters -> Add)

2. Configure the visibility overrides for each filter (Filters - > Overrides)

3. Done

So, first question is: if I have a saved filter, say "Myfilter", how do I add it to the current view? I know it's via view.addfilter(), but I can't figure out how to get the ElementID parameter addfilter takes, for my filter based on its name. Or how to get a list (Ilist?) of the view filters available in the model, through which you could iterate and test for your desired name.

Second question, it would seem like an attractive option to simply create the filters I need from scratch. I've seen several examples in the SDK that cover creating view filters. Except that most of the examples simply filter on a built-in parameter (for example filter all the walls in the model). The parameter I need to filter on is a user-defined project parameter (not shared tho). How would you go about creating a filter based on one of these user-defined parameters?

Re: Apply a saved view filter?

Anonymous — Sat, 30 Jan 2016 01:51:18 GMT

I'd probably start with digging into this sample:
SDKs\Revit 2016\Samples\ElementFilter\ViewFilters

Most of what you're looking for is in there, including code to find all view filters.

Re: Apply a saved view filter?

Anonymous — Mon, 01 Feb 2016 16:31:18 GMT

Ok, I've managed to start manipulating visibility and filter parameters. Unfortunately I can't figure out how to set a certain filter to a solid fill pattern.

I'm iterating through the list of filters in the current view and using:

mygraphicsoverride.SetCutFillPatternId(....);

But, I can't figure out what to apply at "..." to get it to use a solid fill pattern. Any ideas?

Re: Apply a saved view filter?

Anonymous — Tue, 02 Feb 2016 07:03:48 GMT

+ Id {4} Autodesk.Revit.DB.ElementId

So I think 4 of {4} will do the trick ....

Re: Apply a saved view filter?

Revitalizer — Tue, 02 Feb 2016 08:07:45 GMT

Hi,

you can use a FilteredElementCollector to get the FillPatternElement you need.

When iterating over the FillPatternElements, you can get the solid one by its FillPattern.IsSolidFill property.

(Its FillPattern can be got by FillPatternElement.GetFillPattern()).

Revitalizer

Re: Apply a saved view filter?

Anonymous — Tue, 02 Feb 2016 08:10:28 GMT

Dim TestCollector As New FilteredElementCollector(m_uidoc.Document)
Dim TestIterator As FilteredElementIterator = TestCollector.OfClass(GetType(FillPatternElement)).GetElementIterator
TestIterator.Reset()

For Each fp As FillPatternElement In TestCollector

In my case the solid fill returned integer = 4

Re: Apply a saved view filter?

Revitalizer — Tue, 02 Feb 2016 08:15:23 GMT

Hi,

An ElementId can vary between different documents, so your value of "4" will probably not work for him.

Revitalizer

Re: Apply a saved view filter?

Anonymous — Tue, 02 Feb 2016 08:29:49 GMT

Absolutely true. I realised that also and therefore I provided a little code. You can find the ElementId by looking for a FillPatern named 'Solid fill'.

For Each fp As FillPatternElement In TestCollector
If fp.Name.ToString = "Solid fill" Then
Dim elementId As ElementId = fp.Id
Exit For
End If
Next

Re: Apply a saved view filter?

Revitalizer — Tue, 02 Feb 2016 09:46:52 GMT

Hi,

no need to get an Element by comparison of names.

As I've written above, there is an IsSolidFill property which allows to get it language-independent.

Revitalizer

Re: Apply a saved view filter?

Anonymous — Tue, 02 Feb 2016 09:52:54 GMT

Didn't realise that. And it works fine too. Now I have to remember that for the next time I need it 😉

Re: Apply a saved view filter?

Anonymous — Tue, 02 Feb 2016 14:55:15 GMT

What's with all the FilterElementCollectors in the Revit API? Seems everything revolves around a collector and a whole bunch of type conversions and obscure class members. I'm surprised commenting out code doesn't require a collector!

Couldn't Autodesk just have defined a built in constant called "FILLPATTERN_SOLID" or something? Would have turned out a whole lot easier.