topic Re: Is Point Along Path not available from the API? in Fusion API and Scripts Forum

Is Point Along Path not available from the API?

reisyu — Sun, 26 Jul 2020 08:00:19 GMT

I want to use Point Along Path with the Fusion360 API.

I looked at the ConstructionPointInput Object page.

But I didn't see Point Along Path in the reference manual.

https://help.autodesk.com/view/fusion360/ENU/?guid=GUID-b3ffae9a-d7d7-48ee-bd66-b1138536767f

Is Point Along Path not available from the API?

Re: Is Point Along Path not available from the API?

MichaelT_123 — Mon, 27 Jul 2020 00:56:31 GMT

Yes, it is, Mr Reisyu.

Re: Is Point Along Path not available from the API?

kandennti — Mon, 27 Jul 2020 01:57:48 GMT

"Application.executeTextCommand" can be used to create it to some extent.　I've created a sample.

#Fusion360API python script #Description-create PointAlongPath sample import adsk.core, adsk.fusion, traceback _app = adsk.core.Application.cast(None) _ui = adsk.core.UserInterface.cast(None) def run(context): try: global _app, _ui _app = adsk.core.Application.get() _ui = _app.userInterface # new doc _app.documents.add(adsk.core.DocumentTypes.FusionDesignDocumentType) des :adsk.fusion.Design = _app.activeProduct des.designType = adsk.fusion.DesignTypes.ParametricDesignType root :adsk.fusion.Component = des.rootComponent # create sketch crv = initSktCircle(root) # create pipe initPointAlongPath(crv, 0.5) # create sketch crv = initSktSpline(root) # create pipe initPointAlongPath(crv, 0.3) except: if _ui: _ui.messageBox('Failed:\n{}'.format(traceback.format_exc())) def initSktSpline(comp :adsk.fusion.Component): skt :adsk.fusion.Sketch = comp.sketches.add(comp.xYConstructionPlane) poss = [[-1,2,5], [2,1,0], [0,-4,2], [-2,5,-2]] pnt3D = adsk.core.Point3D objs = adsk.core.ObjectCollection.create() [objs.add(pnt3D.create(x,y,z)) for (x,y,z) in poss] crvs :adsk.fusion.SketchCurves = skt.sketchCurves crv = crvs.sketchFittedSplines.add(objs) return crv def initSktCircle(comp :adsk.fusion.Component): skt :adsk.fusion.Sketch = comp.sketches.add(comp.xYConstructionPlane) pnt3D = adsk.core.Point3D crvs :adsk.fusion.SketchCurves = skt.sketchCurves crv = crvs.sketchCircles.addByCenterRadius(pnt3D.create(-5.0,-5,0), 4.0) return crv def initPointAlongPath(path, ratio): txtCmds = [ u'Commands.Start WorkPointAlongPathCommand', # show dialog u'Commands.SetDouble WORKGEOM_POP_ALONG {}'.format(ratio), # input distance u'NuCommands.CommitCmd' # execute command ] sels = _ui.activeSelections sels.clear() sels.add(path) for cmd in txtCmds: _app.executeTextCommand(cmd) sels.clear()

Here's how to use TextCommands and how to find the ID.

https://forums.autodesk.com/t5/fusion-360-api-and-scripts/use-textcommands/td-p/9645688

後、ブログ紹介してくれてありがとう。

Re: Is Point Along Path not available from the API?

MichaelT_123 — Mon, 27 Jul 2020 02:56:26 GMT

Hi Kandennti-San,

... you work extremely hard on this forum! :)... so hard that others have become a little bit lazy.
Regarding the code... it is excellent, but there is a more straightforward way to perform the task. I am sure that you know it!

Do you give the chance to find the way by Mr. Reisyu himself? :).

Regards
MichaelT

Re: Is Point Along Path not available from the API?

kandennti — Mon, 27 Jul 2020 04:11:09 GMT

Thanks @MichaelT_123 .

I was dimly aware that some people were not happy with my methods.
I am grateful for this, as no one has ever come along to warn me as clearly as you have.
I will change my style in the future.

Re: Is Point Along Path not available from the API?

reisyu — Mon, 27 Jul 2020 14:10:02 GMT

Thanks @MichaelT_123

I found the ConstructionPlaneInput.setByDistanceOnPath Method. I'm going to create a point of intersection between this plane and the path
http://help.autodesk.com/view/fusion360/ENU/?guid=GUID-46dd5f0a-e384-4707-b431-37c0e596f328

Re: Is Point Along Path not available from the API?

reisyu — Mon, 27 Jul 2020 14:16:37 GMT

Thanks @kandennti

I was surprised to see a solution like this.
Fusion360's APIs are very deep !!

Re: Is Point Along Path not available from the API?

reisyu — Sat, 01 Aug 2020 13:41:47 GMT

I created point along path in the following way.

Create a plane with ConstructionPlaneInput.setByDistanceOnPath Method.

Add a sketch to this plane.

Create the intersection of the sketch plane and the path using Sketch.intersectWithSketchPlane Method.

import adsk.core, adsk.fusion, traceback def run(context): ui = None try: app = adsk.core.Application.get() ui = app.userInterface design = app.activeProduct # Get the root component of the active design. rootComp = design.rootComponent # Get the crvPath. sketch1 = rootComp.sketches.item(0) crvPath = sketch1.sketchCurves.sketchFittedSplines.item(0) # Get construction planes planes = rootComp.constructionPlanes # Create construction plane input planeInput = planes.createInput() # Add construction plane by distance on path distance = adsk.core.ValueInput.createByReal(0.5) planeInput.setByDistanceOnPath(crvPath, distance) plane = planes.add(planeInput) # Add NewSketch sketch2 = rootComp.sketches.add(plane) # intersect With Sketch Plane entities = [] entities.append(crvPath) skPoints = sketch2.intersectWithSketchPlane(entities) except: if ui: ui.messageBox('Failed:\n{}'.format(traceback.format_exc()))

Re: Is Point Along Path not available from the API?

MichaelT_123 — Sat, 01 Aug 2020 23:02:29 GMT

Hi Mr. Reisyu,

... the code is much simpler than the original proposal.

It can be simplified even more, and even, it will be likely faster by avoiding:

sketch2.intersectWithSketchPlane(entities)

Just use:

point3D = constructionPlane.geometry.origin

Regards

MichaelT

Re: Is Point Along Path not available from the API?

reisyu — Tue, 04 Aug 2020 15:22:38 GMT

Hi @MichaelT_123
Thanks for the very good advice!
Combined with sketchPoints.add(poind3D), it's a very simple way to do it!

Re: Is Point Along Path not available from the API?

marekveg — Tue, 02 Jul 2024 07:36:30 GMT

To be fair, point along path is not really available in API. There is a substitute approach where you can use plane along the path and then use sketches to do points on it, but this just adds another layer of complexity and I'm actually bit surprised they have decided not to make it into the API.

And yes it is possible to place points on the path using setByPoint, but this requires the whole design to be direct design. Very unfortunate, as I actually would like to keep it parametric. So creating planes and sketches to get points it is. Or using the approach to run text commands, but that would require looking up created points in the app, so that's also cumbersome :/.