topic Find location of section heads on sheet in Revit API Forum

Find location of section heads on sheet

Anonymous — Fri, 08 Dec 2017 17:38:49 GMT

I'm trying to get the location of section heads on a sheet viewport. However, I'm finding it difficult to even find the section head elements themselves using a FilteredElementCollector. I've resorted to running a FilteredElementCollector to collect all elements from the view, and then grouping them by category. In the results, I don't see ANY reference to section heads.

Here's my C# code:

var counts = new Dictionary<String, int>();
var collector = new FilteredElementCollector(document, view.Id)
foreach (var element in collector) 
{
    if (element.Category == null)
    {
        continue;
    }
    if (!counts.ContainsKey(element.Category.Name))
    {
        counts[element.Category.Name] = 0;
    }
    counts[element.Category.Name] += 1;
}

The collector is able to find a View element corresponding to the Section that's referenced from this view, but I can't figure out how to use that to find the location of the section head.

I'm relatively new to the Revit API, but I've put in a few hours of research on this topic and can't figure out where to even start. From reading through documentation on categories, I should be looking for elements of type BuiltInCategory.OST_SectionHeads (and if I'm not, then what on earth is this category for?!), but again I see no hint of elements of this type on this view. No elements of this category appear when running RevitLookup's "Snoop DB" command.

Finally, I'd like to repeat this process for elevation and callout markers. If that process is significantly different, any info on it would be appreciated.

Re: Find location of section heads on sheet

Mustafa.Salaheldin — Sun, 10 Dec 2017 12:47:44 GMT

I think you can't do this through the API, but let me know why do you need the location of the marks, may be we can find out another solution!!

Re: Find location of section heads on sheet

Anonymous — Sun, 10 Dec 2017 15:21:28 GMT

There's not really another option. I would like to export this data out of Revit.

Re: Find location of section heads on sheet

Mustafa.Salaheldin — Sun, 10 Dec 2017 18:05:34 GMT

You can export the end points of the section line. Is this working for you?

Re: Find location of section heads on sheet

Anonymous — Sun, 10 Dec 2017 22:55:54 GMT

How do I do this? Which category is the section line under?

Re: Find location of section heads on sheet

Dale.Bartlett — Mon, 11 Dec 2017 05:45:27 GMT

Does this help? http://thebuildingcoder.typepad.com/blog/2017/03/ttt-to-obtain-section-marker-endpoint.html

Dale

Re: Find location of section heads on sheet

Anonymous — Thu, 14 Dec 2017 18:39:17 GMT

Thanks Dale! That is helpful, and gives me a hint as to how I might go about hacking my way towards a solution. But I'm still quite a ways off from being able to find the bounding box for the section heads, even with this neat hack. I suppose at this point the answer is "No, there's no good way to get bounding boxes for section heads".

If anyone has any other hacks or advice, it would be greatly appreciated!