Get planarface under element

[mr.engineer.aec]

 Hi guys,

I want to get under planarface of pile cap.

Is there any method to get it from solid?

i can only get all planarface from solid 😞

Thank in advanced.

[jeremytammik · Accepted solution]

Yes, of course. 

It is very simple.

You say you know how to retrieve all the planar surfaces. 

Well, then you can iterate over them and ignore all that are not horizontal, e.g., by applying a predicate method like this to the planar surface normal:

    public static bool IsVertical( XYZ v )
    {
      return IsZero( v.X ) && IsZero( v.Y );
    }

https://github.com/jeremytammik/the_building_coder_samples/blob/master/BuildingCoder/BuildingCoder/U...

Next, you can sort the remaining horizontal planar surfaces by the Z coordinate of their Origin property:

https://www.revitapidocs.com/2020/9671f9cf-6779-d6ca-8af4-91ac44b986ac.htm

The one with the lowest Z coordinate is presumably the one you are after.

[mr.engineer.aec]

 Hi @jeremytammik 

Thank for your reply.

I am still finding workarounds according to your instructions.

Hope you can help me next time.

[jeremytammik]

Thank you for your appreciation. My pleasure entirely.

[mr.engineer.aec]

 Hi @jeremytammik 

I solved my issue by your guide.
Now, i have new issue, hope you can help me.

I want to create floor from edgeloops of bottom face.

I get edgeloops but i can't curvearray to use create floor method.
How to get curvearray of bottom face ?
Thank in advance

               EdgeArrayArray curveloop = planarFace.EdgeLoops;
              //Floor newfloor = doc.Create.NewFloor(curveloop, true);

[naveen.kumar.t]

Hi @mr.engineer.aec ,

try using the below code

Use GetEdgesAsCurveLoops() method 

                Face f;               
                IList<CurveLoop> curveLoops = f.GetEdgesAsCurveLoops() as IList<CurveLoop>;
                CurveArray CA = new CurveArray();
                foreach(CurveLoop CL in curveLoops)
                {
                    CurveLoopIterator CLi = CL.GetCurveLoopIterator();
                    while(CLi.MoveNext())
                    {
                        CA.Append(CLi.Current);
                    }
                }

I hope this helps.

[mr.engineer.aec]

 Hi @naveen.kumar.t 

thank for your reply.

I write code like you but after run, Bug is visible.
Can you hekp me to solve this issue ?
Many thanks

IList<CurveLoop> curveloop = planarFace.GetEdgesAsCurveLoops() as IList<CurveLoop>;
                                CurveArray curveArray = new CurveArray();
                                foreach(CurveLoop cl in curveloop)
                                {
                                    CurveLoopIterator cli = cl.GetCurveLoopIterator();
                                    while (cli.MoveNext())
                                    {
                                        curveArray.Append(cli.Current);
                                    }
                                    Floor newfloor = doc.Create.NewFloor(curveArray, true);
                                }

[naveen.kumar.t · Accepted solution]

Hi @mr.engineer.aec ,

The error shows with the curves you have , you can't create a floor. can you check whether you got the proper face curve array?

The face curves should help you to construct a floor.

check whether the curves are valid.

[mr.engineer.aec]

 Thank @naveen.kumar.t 

this is my bad. I solved.

[Revitalizer]

Hi,

the input curves are not sorted.

RevitAPI.chm says:

"[...]Face.GetEdgesAsCurveLoops

Orientations of the curves and curve loops match the orientations of the face's edges and edge loops. The order of the CurveLoops should be considered as arbitrary.[...]"

Edit:

Oops, seems that I didn't read it carefully.

Curves in CureLoops are sorted, returned CurveLoops List is not.

Revitalizer

[mr.engineer.aec]

 Hi @naveen.kumar.t 

Is there any way to offset curve to create floor like under picture. inside red line is curve get from face as above.

I search CreateViaOffset Method, but i don't know how to use it yet.

Can you show me how to use this method ?
Thank in advanced