Topic: retrieve CorridorFeatureLine from Civil-database

[Peter2]

(I'm stumbling from one obstacle to the next)

My basic target is to calculate intersection between "SAMPLE_Lines" and "CorridorFeatureLines". Many steps are done (alignments, profiles, surfaces, corridors, ..) but now I'm searching for "Corridorfeaturelines"

In the Swamp are some examples relating FeatureLines.

Here is a post called ..
"Selecting a Civil 3D Corridor Feature Line"
https://forums.autodesk.com/t5/autocad-civil-3d-customization/selecting-a-civil-3d-corridor-feature-line/td-p/6694642
But this is a COM example, converting a corridor to a block and extracting the block.

Dumping a corridor-object seem to bring up no directions to follow ..

Code - Auto/Visual Lisp: [Select]

1. *************   Anfang Dump Ausgabe   *************
2. AECC_CORRIDOR
3. ; IAeccCorridor: Schnittstelle 3D-Profilkörper
4. ; Eigenschaftswerte:
5. ;   Application (RO) = #<VLA-OBJECT IAeccApplication 0000024d2dd05a80>
6. ;   Baselines (RO) = #<VLA-OBJECT IAeccBaselines 0000024d2dd07010>
7. ;   CodeSetStyleName = "CH Lageplan mit Füllung"
8. ;   CorridorSurfaces (RO) = #<VLA-OBJECT IAeccCorridorSurfaces 0000024d2dd066b0>
9. ;   Description = ""
10. ;   DisplayName (RO) = "3D Profilkörper Hauptachse"
11. ;   Document (RO) = #<VLA-OBJECT IAeccDocument 0000024d2dd07520>
12. ;   EntityTransparency = "VonLayer"
13. ;   FeatureLineCodeInfos (RO) = #<VLA-OBJECT IAeccFeatureLineCodeInfos 0000024d2dd086c0>
14. ;   Handle (RO) = "839AB"
15. ;   HasExtensionDictionary (RO) = 0
16. ;   Hyperlinks (RO) = #<VLA-OBJECT IAcadHyperlinks 0000024d4582f0e8>
17. ;   Layer = "C-3D Profilkörper"
18. ;   Linetype = "ByLayer"
19. ;   LinetypeScale = 1.0
20. ;   Lineweight = -1
21. ;   Material = "ByLayer"
22. ;   MaximumTriangleSideLength = 0.0
23. ;   Name = "3D Profilkörper Hauptachse"
24. ;   ObjectID (RO) = 42
25. ;   ObjectName (RO) = "AeccDbCorridor"
26. ;   OutOfDate (RO) = 0
27. ;   OwnerID (RO) = 43
28. ;   PlotStyleName = "ByLayer"
29. ;   RebuildAutomatic = 0
30. ;   ShowToolTip = -1
31. ;   TrueColor = #<VLA-OBJECT IAcadAcCmColor 0000024d4582ef60>
32. ;   Visible = -1
33. ; Unterstützte Methoden:
34. ;   AddBaseline (3)
35. ;   ArrayPolar (3)
36. ;   ArrayRectangular (6)
37. ;   Copy ()
38. ;   Delete ()
39. ;   GetBoundingBox (2)
40. ;   GetExtensionDictionary ()
41. ;   GetXData (3)
42. ;   Highlight (1)
43. ;   IntersectWith (2)
44. ;   IsReferenceObject ()
45. ;   IsReferenceStale ()
46. ;   IsReferenceSubObject ()
47. ;   IsReferenceValid ()
48. ;   Mirror (2)
49. ;   Mirror3D (3)
50. ;   Move (2)
51. ;   Rebuild ()
52. ;   Rotate (2)
53. ;   Rotate3D (3)
54. ;   ScaleEntity (2)
55. ;   SetXData (2)
56. ;   TransformBy (1)
57. ;   Update ()
58.  

And the description of the "CorridorFeatureLine Class" does not show me how to get there:
http://docs.autodesk.com/CIV3D/2018/ENU/API_Reference_Guide/html/fd9c26dc-d4c1-aa59-b030-3e370280ff5f.htm

Any advice will be appreciated.

[Peter2]

Progress Report: I will try this way ..

http://blog.civil3dreminders.com/2009/01/extract-3dpolyline-from-corridor.html

[Peter2]

Learned lessons 1:

Maybe I'm totally wrong, but there seem to be a huge difference between "feature lines" and "feature lines extracted from baselines inside corridors".

Here is the dump of the extracted feature line:

Code - Auto/Visual Lisp: [Select]

1. Befehl: (setq feat_line_item (vlax-invoke-method feat_line_tmp "Item" 0))
2. #<VLA-OBJECT IAeccFeatureLine 000001ed3f111210>
3.  
4. Befehl: (vlax-dump-object feat_line_item t)
5. ; IAeccFeatureLine: FeatureLine-Schnittstelle
6. ; Eigenschaftswerte:
7. ;   CodeName (RO) = "Achspunkt"
8. ;   Corridor (RO) = #<VLA-OBJECT IAeccCorridor 000001ed26240290>
9. ;   FeatureLinePoints (RO) = #<VLA-OBJECT IAeccFeatureLinePoints 000001f55362e650>
10. ; Keine Methoden
11. T
12.  

And here the dump of a "normal" feature line:

Code - Auto/Visual Lisp: [Select]

1. Befehl: (setq rechts (vlax-ename->vla-object  (car (entsel "\nBitte Rechts wählen : "))))
2.  
3. Bitte Rechts wählen : #<VLA-OBJECT IAeccLandFeatureLine 000001f5539a46b0>
4.  
5. Befehl: (vlax-dump-object rechts t)
6. ; IAeccLandFeatureLine: IAeccLandFeatureLine-Schnittstelle
7. ; Eigenschaftswerte:
8. ;   Application (RO) = #<VLA-OBJECT IAeccApplication 000001f55d9b06a0>
9. ;   Description = ""
10. ;   DisplayName (RO) = ""
11. ;   Document (RO) = #<VLA-OBJECT IAeccDocument 000001f55d9b0790>
12. ;   ElevationPointsCount (RO) = 0
13. ;   EntityTransparency = "VonLayer"
14. ;   Handle (RO) = "850FB"
15. ;   HasExtensionDictionary (RO) = 0
16. ;   Hyperlinks (RO) = #<VLA-OBJECT IAcadHyperlinks 000001ed43ac7958>
17. ;   IsEditable (RO) = -1
18. ;   Layer = "C-Elementkante"
19. ;   Length2D (RO) = 25.184
20. ;   Length3D (RO) = 25.184
21. ;   Linetype = "ByLayer"
22. ;   LinetypeScale = 1.0
23. ;   Lineweight = -1
24. ;   Material = "ByLayer"
25. ;   MaxElevation (RO) = 0.0
26. ;   MaxGrade (RO) = 0.0
27. ;   MiniElevation (RO) = 0.0
28. ;   MiniGrade (RO) = 0.0
29. ;   Name = ""
30. ;   ObjectID (RO) = 42
31. ;   ObjectName (RO) = "AeccDbFeatureLine"
32. ;   OwnerID (RO) = 43
33. ;   PIPointsCount (RO) = 2
34. ;   PlotStyleName = "ByLayer"
35. ;   PointsCount (RO) = 2
36. ;   ShowToolTip = -1
37. ;   TrueColor = #<VLA-OBJECT IAcadAcCmColor 000001ed43ab6eb0>
38. ;   Visible = -1
39. ; Unterstützte Methoden:
40. ;   ArrayPolar (3)
41. ;   ArrayRectangular (6)
42. ;   Copy ()
43. ;   Delete ()
44. ;   DeleteFeaturePoint (1)
45. ;   Get2dDistanceAtPoint (1)
46. ;   Get2dDistanceBetweenPoints (2)
47. ;   GetBoundingBox (2)
48. ;   GetBulgeAtPoint (1)
49. ;   GetDeflectionAngleAtPoint (1)
50. ;   GetExtensionDictionary ()
51. ;   GetGradesAtPoint (3)
52. ;   GetPoints (1)
53. ;   GetSurfaceIntersectPoints (1)
54. ;   GetXData (3)
55. ;   Highlight (1)
56. ;   InsertFeaturePoint (2)
57. ;   InsertFeaturePoints (2)
58. ;   IntersectWith (2)
59. ;   IsGradeBreak (1)
60. ;   IsReferenceObject ()
61. ;   IsReferenceStale ()
62. ;   IsReferenceSubObject ()
63. ;   IsReferenceValid ()
64. ;   Mirror (2)
65. ;   Mirror3D (3)
66. ;   Move (2)
67. ;   RaiseFeatureLine (1)
68. ;   Rotate (2)
69. ;   Rotate3D (3)
70. ;   ScaleEntity (2)
71. ;   SetBulgeAtPoint (2)
72. ;   SetElevationsFromOffsetSource (1)
73. ;   SetPointElevation (1)
74. ;   SetPointsElevation (1)
75. ;   SetXData (2)
76. ;   TransformBy (1)
77. ;   Update ()
78. T
79.  
80.  

[Jeff_M]

Correct. a Corridor Featureline is quite different than the LandFeatureline. Why they decided to use the same name for different objects, I don't know, but it can be confusing.