topic Re: Moving a Component Help in Fusion API and Scripts Forum

Moving a Component Help

rusty.bird — Mon, 13 Mar 2023 17:36:34 GMT

Hello I am making a script to move a component from a selected point to another selected point but I am getting an error at the end. It works if I move a body but not a component. Here is the code below:

# Get a body by having the user select one. body: adsk.fusion.Components = ui.selectEntity('Select a component.', 'Occurrences').entity # Have an entity selected that represents a point. # This can be a Vertex, Sketch Point, or Construction Point. pointEnt = ui.selectEntity('Select a point entity', 'ConstructionPoints, SketchPoints, Vertices').entity # Get the XYZ position of the point in model space. pnt1: adsk.core.Point3D = None if pointEnt.objectType == adsk.fusion.SketchPoint.classType(): skPoint: adsk.fusion.SketchPoint = pointEnt pnt1 = skPoint.worldGeometry else: pnt1 = pointEnt.geometry # Select a Second Point pointEnt2 = ui.selectEntity('Select a point entity', 'ConstructionPoints, SketchPoints, Vertices').entity # Get the XYZ position of the point in model space. pnt2: adsk.core.Point3D = None if pointEnt2.objectType == adsk.fusion.SketchPoint.classType(): skPoint2: adsk.fusion.SketchPoint = pointEnt2 pnt2 = skPoint2.worldGeometry else: pnt2 = pointEnt2.geometry # Create a matrix that defines the translation from point 1 to point trans: adsk.core.Matrix3D = adsk.core.Matrix3D.create() trans.translation = pnt1.vectorTo(pnt2) # Create a move feature using the matrix. moveFeatures = design.rootComponent.features.moveFeatures inputEnts = adsk.core.ObjectCollection.create() inputEnts.add(body) moveInput = moveFeatures.createInput(inputEnts, trans) moveFeatures.add(moveInput)

Re: Moving a Component Help

kandennti — Tue, 14 Mar 2023 00:11:03 GMT

Hi @rusty.bird .

It seems that the movement of occurrence is not done by MoveFeature, but by Occurrence.transform property or transform2 property.

https://help.autodesk.com/view/fusion360/ENU/?guid=GUID-7fb9ea55-5c24-4c27-b1c4-2e92f42774f7

https://help.autodesk.com/view/fusion360/ENU/?guid=GUID-7231EE6E-FB14-4370-AEE5-F9AE7419B97B

※The document states that the transform property is obsolete, but I was able to use it. I don't think the transform property should be discontinued because what you get is different.

After changing the transform/transform2 property, the position is not fixed, so you need to do the following.

des.snapshots.add()

https://forums.autodesk.com/t5/fusion-360-api-and-scripts/transformation-on-occurrence-getting-reset/m-p/8402626#M6887

Re: Moving a Component Help

rusty.bird — Tue, 14 Mar 2023 12:37:40 GMT

Thanks, I removed the create move feature section in the code and it mostly worked.

body.transform2 = trans design.snapshots.add()

But I noticed it is not moving to the correct position. I am assuming something to do with the vectors is wrong.

Re: Moving a Component Help

rusty.bird — Tue, 14 Mar 2023 13:34:50 GMT

I Found the Issue it was with my transform. Here is the updated code that works.

trans: adsk.core.Matrix3D = adsk.core.Matrix3D.create() trans.translation = pnt1.vectorTo(pnt2) transNew = body.transform2 transNew.transformBy(trans) body.transform2 = transNew

Re: Moving a Component Help

kandennti — Wed, 15 Mar 2023 02:46:13 GMT

@rusty.bird .

I am getting confused too, so I did a test to confirm.
This was tested based on ver 2.0.15509.

Create a component (level2) within the root component (level1) and then a component (level3).
Each component is created with XYZ+10.0.
Activate the level3 component, create a sketch on the XY plane, and draw a square.
Constrain only the lower left point by 10 mm in the XY direction.
Create the body by extrusion.
Create construction points at the vertices near the origin.
"Sketch point", "body vertex", and "construction point" all remain in the same position in the level3 component.
(The f3d file of this data is attached.)

Using this data, the following script is executed.
The text command is designed to output the coordinate values of the selected points.
We expect the output to be the coordinate values (3.0,3.0,2.0) from the origin of level1.

# Fusion360API Python script import traceback import adsk.core as core import adsk.fusion as fusion def run(context): ui = core.UserInterface.cast(None) try: app: core.Application = core.Application.get() ui = app.userInterface msg: str = 'Select Point' selFilter: str = 'ConstructionPoints, SketchPoints, Vertices' sel: core.Selection = selectEnt(msg, selFilter) if not sel: return pointEntity = sel.entity point: core.Point3D = get_point3d(pointEntity) dump_point(point, f'{pointEntity.objectType} -> ') except: if ui: ui.messageBox('Failed:\n{}'.format(traceback.format_exc())) def get_point3d( pointEntity ) -> core.Point3D: point: core.Point3D = None if pointEntity.objectType == fusion.SketchPoint.classType(): point = pointEntity.worldGeometry else: point = pointEntity.geometry return point def selectEnt( msg: str, filterStr: str ) -> core.Selection: try: app: core.Application = core.Application.get() ui: core.UserInterface = app.userInterface sel = ui.selectEntity(msg, filterStr) return sel except: return None def dump_point(pnt: core.Point3D, msg: str = ''): app: core.Application = core.Application.get() app.log(f'{msg}{pnt.asArray()}')

The reason why selectEntity is used to select an element is because the selected element will be a proxy.

Here is the actual output.

adsk::fusion::SketchPoint -> (3.0, 3.0, 2.0) adsk::fusion::BRepVertex -> (3.0, 3.0, 2.0) adsk::fusion::ConstructionPoint -> (2.0, 2.0, 1.0)

SketchPoint(worldGeometry) and BRepVertex are as expected, but only the ConstructionPoint is different.

The construction point coordinates are from the origin of the component one level above (level2).

I cannot determine if this is a bug or a specification. Unfortunately, the origin of each component is also greatly affected by the construction point.
I am sure this is a very confusing situation.