How to get the ReferencePlane of a ExtrusionRoof

[Anonymous]

I need export a ExtrusionRoof element and then import and create a same roof later.

I find there is a NewExtrusionRoof to create roof, and it need a ReferencePlane parameter:

public ExtrusionRoof NewExtrusionRoof(CurveArray profile, ReferencePlane refPlane, Level level, RoofType roofType, double extrusionStart, double extrusionEnd);

I try to print all the parameters of a ExtrusionRoof and one of the ReferencePlane in scene as below, but find no relation between them, how can I get the ReferencePlane of a ExtrusionRoof ?

Roof parameters:

Fascia Depth = "0' - 0""
Design Option = "-1"
Category = "Roofs"
Work Plane = ""
Level Offset = "0' - 0""
Extrusion Start = "-0' - 5""
Room Bounding = "Yes"
Type Id = "24298"
Phase Created = "New Construction"
Image = "<None>"
Rafter Cut = "Plumb Cut"
Reference Level = "Level 2"
Thickness = "0' - 3 3/8""
Mark = ""
Type = "Wood Rafter 8" - Asphalt Shingle - Insulated"
Type Name = ""
Phase Demolished = "None"
Area = "731 SF"
Family = "Basic Roof"
Category = "Roofs"
Family Name = ""
Slope = "0" / 12""
Comments = ""
Extrusion End = "26' - 5 1/32""
Family and Type = "Basic Roof: Wood Rafter 8" - Asphalt Shingle - Insulated"
Related to Mass = "No"
Volume = "205.28 CF"

ReferencePlane parameters:

Name = "Reference Plane"
BubbleEnd = "(76.533359954, -62.781219960, 10.000000000)"
FreeEnd = "(-84.604570907, -62.781219960, 10.000000000)"
Direction = "(1.000000000, 0.000000000, 0.000000000)"
Plane.Origin = "(0.000000000, 0.000000000, 10.000000000)"
Plane.Normal = "(0.000000000, 0.000000000, 1.000000000)"
Design Option = "-1"
Category = "Reference Planes"
Subcategory = "<None>"
Type Name = ""
Category = "Reference Planes"
Name = ""
Family Name = ""
Scope Box = "None"

[thannaingoo.api]

Dear @Anonymous,

Please refer the below link.

It may be useful for your case.

https://boostyourbim.wordpress.com/2018/03/29/schedule-slope-of-all-roof-or-floor-faces/

Regards,

Eden Oo

[Anonymous]

Hi,

As I know, there are two methods to create a ReferencePlane:

public ReferencePlane NewReferencePlane(DB.XYZ bubbleEnd, DB.XYZ freeEnd, DB.XYZ cutVec, View pView);
public ReferencePlane NewReferencePlane2(DB.XYZ bubbleEnd, DB.XYZ freeEnd, DB.XYZ thirdPnt, View pView);

I can not find these in the link, how can I get the parameters such as bubbleEnd ?