Using SpaceClaim scripts vs recorded blocks for parametric optimization workflow

- September 17, 2025 at 1:39 am
  vspenergyofficial
  Subscriber
  Hello,
  I’m Surya Teja and I’m using SpaceClaim (2022 R1) for my parametric hydrodynamic optimization research. The broader goal is to connect SpaceClaim geometry with Python-based sampling and optimization, where:
  - SpaceClaim geometric parameters serve as design variables.
  - AQWA provides hydrodynamic outputs.
  - A custom Sci-ML adaptive learning algorithm (with backpropagation) guides the next parameter set based on an external objective function.
  What I’ve tried so far:
  - Scripting (V21 API):
    I attempted to draw my geometry idea directly with scripting.
    As a beginner in SpaceClaim scripting, I wasn’t able to fully complete it.
  - Recorded Script option:
    I manually created the geometry and recorded the steps into a script.
    The generated script runs correctly in the original session.
    However, when I copy/paste the script into a new session (new design, new console, new script file), the run breaks with errors.
    I’ve tried known tips such as avoiding extra clicks and preferring index-based selections over SmartVariables, but the errors persist.
    I even tried external help (AI chatbots, documentation), but most fixes turn out redundant or incorrect.
  Where I’m stuck / my questions:
  - Is there a recommended way to make recorded scripts replayable in fresh sessions?
  - Should I instead rely on recorded blocks for robust rebuilds, since they are stored inside the .scdoc file?
  - If blocks are the safer method, how can I:
    Test them safely by re-running them to check whether they break (if this is obvious, please confirm).
    Access their parameters in Python for custom sampling under constraints.
  - Is there any best practice for combining SpaceClaim parameters with external optimization loops (Python + AQWA) without the workflow breaking?
  I’m mainly looking for a repeatable and stable approach to:
  1. Define geometry in SpaceClaim.
  2. Expose parameters for optimization.
  3. Safely integrate with Python + AQWA.
  Any guidance, examples, or references would be greatly appreciated.
  Thanks,
  Surya Teja
  Below is my recorded script, please test it and rectify the errors:
  
  # Python Script, API Version = V21
  # Set Sketch Plane
  sectionPlane = Plane.PlaneXY
  result = ViewHelper.SetSketchPlane(sectionPlane, Info1)
  # EndBlock
  
  # Set New Sketch
  result = SketchHelper.StartConstraintSketching()
  # EndBlock
  
  # Sketch Circle
  origin = Point2D.Create(M(0), M(0))
  result = SketchCircle.Create(origin, M(1.75))
  
  baseSel = SelectionPoint.Create(CurvePoint1)
  targetSel = SelectionPoint.Create(DatumLine1)
  
  result = Constraint.CreateCoincident(baseSel, targetSel)
  
  baseSel = SelectionPoint.Create(CurvePoint1)
  targetSel = SelectionPoint.Create(DatumPoint1)
  
  result = Constraint.CreateCoincident(baseSel, targetSel)
  # EndBlock
  
  # Solidify Sketch
  mode = InteractionMode.Solid
  result = ViewHelper.SetViewMode(mode, Info2)
  # EndBlock
  
  # Translate Along X Handle
  selection = Body1
  direction = Direction.DirX
  options = MoveOptions()
  result = Move.Translate(selection, direction, M(-8), options, Info3)
  # EndBlock
  
  # Extrude 1 Face
  selection = Face1
  options = ExtrudeFaceOptions()
  options.ExtrudeType = ExtrudeType.Add
  result = ExtrudeFaces.Execute(selection, M(4), options, Info4)
  # EndBlock
  
  # Extrude 1 Face
  selection = Face2
  options = ExtrudeFaceOptions()
  options.ExtrudeType = ExtrudeType.Add
  result = ExtrudeFaces.Execute(selection, M(4), options, Info5)
  # EndBlock
  
  # Set Sketch Plane
  selection = Face2
  result = ViewHelper.SetSketchPlane(selection, Info6)
  # EndBlock
  
  # Set New Sketch
  result = SketchHelper.StartConstraintSketching()
  # EndBlock
  
  # Sketch Circle
  origin = Point2D.Create(M(0), M(0))
  result = SketchCircle.Create(origin, M(1))
  
  baseSel = Curve1
  targetSel = Curve2
  result = Constraint.CreateConcentric(baseSel, targetSel)
  # EndBlock
  
  # Set Sketch Plane
  sectionPlane = Plane.Create(Frame.Create(Point.Create(M(-8), M(0), M(-4)),
  -Direction.DirX,
  -Direction.DirZ))
  result = ViewHelper.SetSketchPlane(sectionPlane, Info7)
  # EndBlock
  
  # Set New Sketch
  result = SketchHelper.StartConstraintSketching()
  # EndBlock
  
  # Sketch Line
  start = Point2D.Create(M(0), M(0))
  end = Point2D.Create(M(0), M(6))
  result = SketchLine.Create(start, end)
  
  baseSel = SelectionPoint.Create(CurvePoint2)
  targetSel = SelectionPoint.Create(DatumLine2)
  
  result = Constraint.CreateCoincident(baseSel, targetSel)
  
  baseSel = SelectionPoint.Create(CurvePoint3)
  targetSel = SelectionPoint.Create(DatumLine2)
  
  result = Constraint.CreateCoincident(baseSel, targetSel)
  
  curveSelList = Curve3
  result = Constraint.CreateVertical(curveSelList)
  
  baseSel = CurvePoint2
  targetSel = Curve4
  result = Constraint.CreateMidpoint(baseSel, targetSel)
  
  baseSel = SelectionPoint.Create(Curve3)
  targetSel = SelectionPoint.Create(Curve4)
  
  result = Constraint.CreatePerpendicular(baseSel, targetSel)
  
  baseSel = SelectionPoint.Create(Curve3)
  targetSel = SelectionPoint.Create(Curve5)
  
  result = Constraint.CreateParallel(baseSel, targetSel)
  # EndBlock
  
  # Sketch Line
  start = Point2D.Create(M(0), M(6))
  end = Point2D.Create(M(-8), M(6))
  result = SketchLine.Create(start, end)
  
  baseSel = SelectionPoint.Create(CurvePoint4)
  targetSel = SelectionPoint.Create(CurvePoint3)
  
  result = Constraint.CreateCoincident(baseSel, targetSel)
  
  baseSel = SelectionPoint.Create(Curve6)
  targetSel = SelectionPoint.Create(Curve3)
  
  result = Constraint.CreatePerpendicular(baseSel, targetSel)
  
  baseSel = SelectionPoint.Create(CurvePoint4)
  targetSel = SelectionPoint.Create(DatumLine2)
  
  result = Constraint.CreateCoincident(baseSel, targetSel)
  
  baseSel = SelectionPoint.Create(Curve6)
  targetSel = SelectionPoint.Create(DatumLine2)
  
  result = Constraint.CreatePerpendicular(baseSel, targetSel)
  
  baseSel = SelectionPoint.Create(Curve6)
  targetSel = SelectionPoint.Create(Curve4)
  
  result = Constraint.CreateParallel(baseSel, targetSel)
  # EndBlock
  
  # Solidify Sketch
  mode = InteractionMode.Solid
  result = ViewHelper.SetViewMode(mode, Info8)
  # EndBlock
  
  # Detach Faces
  selBodies = Body2
  result = DetachFaces.Execute(selBodies)
  # EndBlock
  
  # System failure: cannot generate record script selection
  #Error = {0}Nullable object must have a value.
  # EndBlock
  
  # Sweep 1 Face
  selection = Face3
  trajectories = Selection.Create(Curve3, Curve6)
  options = SweepCommandOptions()
  options.ExtrudeType = ExtrudeType.Add
  options.Select = True
  result = Sweep.Execute(selection, trajectories, options, Info9)
  # EndBlock
  
  # Detach Faces
  selBodies = Body3
  result = DetachFaces.Execute(selBodies)
  # EndBlock
  
  # Delete Objects
  selection = CurveFolder1
  result = Delete.Execute(selection)
  # EndBlock
  
  # Delete Selection
  selection = Face4
  result = Delete.Execute(selection)
  # EndBlock
  
  # Translate Along Z Handle
  selection = Body3
  direction = Direction.DirZ
  options = MoveOptions()
  result = Move.Translate(selection, direction, M(9), options, Info10)
  # EndBlock
  
  # Delete Selection
  selection = Face5
  result = Delete.Execute(selection)
  # EndBlock
  
  # Extrude 1 Face
  selection = Face6
  options = ExtrudeFaceOptions()
  options.ExtrudeType = ExtrudeType.Cut
  result = ExtrudeFaces.Execute(selection, M(-1), options, Info11)
  # EndBlock
  
  # Detach Faces
  selBodies = Body4
  result = DetachFaces.Execute(selBodies)
  # EndBlock
  
  # Delete Objects
  selection = Body5
  result = Delete.Execute(selection)
  # EndBlock
  
  # Create Blend
  selection = EdgeSelection.Create(Edge1, Edge2)
  options = LoftOptions()
  options.GeometryCommandOptions = GeometryCommandOptions()
  result = Loft.Create(selection, None, options, Info12)
  # EndBlock
  
  # Detach Faces
  selBodies = Body6
  result = DetachFaces.Execute(selBodies)
  # EndBlock
  
  # Rename 'Surface' to 'Left_Buoy_Bottom_Face'
  selection = Body2
  result = RenameObject.Execute(selection,"Left_Buoy_Bottom_Face")
  # EndBlock
  
  # Rename 'Surface' to 'Left_Buoy_Annulus'
  selection = Body6
  result = RenameObject.Execute(selection,"Left_Buoy_Annulus")
  # EndBlock
  
  # Rename 'Surface' to 'Left_Lower_Tube_Annulus'
  selection = Body7
  result = RenameObject.Execute(selection,"Left_Lower_Tube_Annulus")
  # EndBlock
  
  # Rename 'Surface' to 'Horizontal Tube_Annulus'
  selection = Body8
  result = RenameObject.Execute(selection,"Horizontal Tube_Annulus")
  # EndBlock
  
  # Rename 'Surface' to 'Left_Upper_Tube_Top_Face'
  selection = Body4
  result = RenameObject.Execute(selection,"Left_Upper_Tube_Top_Face")
  # EndBlock
  
  # Rename 'Surface' to 'Left_Upper_Tube_Annulus'
  selection = Body9
  result = RenameObject.Execute(selection,"Left_Upper_Tube_Annulus")
  # EndBlock
  
  # Rename 'Surface' to 'Left_Buoy_Top_Face'
  selection = Body10
  result = RenameObject.Execute(selection,"Left_Buoy_Top_Face")
  # EndBlock
  
  # Create Datum Plane
  selection = Edge3
  result = DatumPlaneCreator.Create(selection, False, Info13)
  # EndBlock
  
  # Mirror
  selection = Body2
  mirrorPlane = DatumPlane1
  options = MirrorOptions()
  result = Mirror.Execute(selection, mirrorPlane, options, Info14)
  # EndBlock
  
  # Mirror
  selection = Body6
  mirrorPlane = DatumPlane1
  options = MirrorOptions()
  result = Mirror.Execute(selection, mirrorPlane, options, Info15)
  # EndBlock
  
  # Mirror
  selection = Body7
  mirrorPlane = DatumPlane1
  options = MirrorOptions()
  result = Mirror.Execute(selection, mirrorPlane, options, Info16)
  # EndBlock
  
  # Mirror
  selection = Body8
  mirrorPlane = DatumPlane1
  options = MirrorOptions()
  result = Mirror.Execute(selection, mirrorPlane, options, Info17)
  # EndBlock
  
  # Mirror
  selection = Body4
  mirrorPlane = DatumPlane1
  options = MirrorOptions()
  result = Mirror.Execute(selection, mirrorPlane, options, Info18)
  # EndBlock
  
  # Mirror
  selection = Body9
  mirrorPlane = DatumPlane1
  options = MirrorOptions()
  result = Mirror.Execute(selection, mirrorPlane, options, Info19)
  # EndBlock
  
  # Mirror
  selection = Body10
  mirrorPlane = DatumPlane1
  options = MirrorOptions()
  result = Mirror.Execute(selection, mirrorPlane, options, Info20)
  # EndBlock
  
  # Delete Objects
  selection = DatumPlane1
  result = Delete.Execute(selection)
  # EndBlock
  
  # Rename 'Left_Buoy_Bottom_Face' to 'Right_Buoy_Bottom_Face'
  selection = Body11
  result = RenameObject.Execute(selection,"Right_Buoy_Bottom_Face")
  # EndBlock
  
  # Rename 'Left_Buoy_Annulus' to 'Right_Buoy_Annulus'
  selection = Body12
  result = RenameObject.Execute(selection,"Right_Buoy_Annulus")
  # EndBlock
  
  # Rename 'Left_Lower_Tube_Annulus' to 'Right_Lower_Tube_Annulus'
  selection = Body13
  result = RenameObject.Execute(selection,"Right_Lower_Tube_Annulus")
  # EndBlock
  
  # Rename 'Left_Upper_Tube_Top_Face' to 'Right_Upper_Tube_Top_Face'
  selection = Body14
  result = RenameObject.Execute(selection,"Right_Upper_Tube_Top_Face")
  # EndBlock
  
  # Rename 'Left_Upper_Tube_Annulus' to 'Right_Upper_Tube_Annulus'
  selection = Body15
  result = RenameObject.Execute(selection,"Right_Upper_Tube_Annulus")
  # EndBlock
  
  # Rename 'Left_Buoy_Top_Face' to 'Right_Buoy_Top_Face'
  selection = Body16
  result = RenameObject.Execute(selection,"Right_Buoy_Top_Face")
  # EndBlock
  
  # Save File
  DocumentSave.Execute(r"C:\Users\kapar\Desktop\Research\U-tube_final.scdoc", FileSettings1)
  # EndBlock

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Using SpaceClaim scripts vs recorded blocks for parametric optimization workflow

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