Spiral help needed

[brad.bylls]

Seeing as how the coil functions aren't available in the API even though all the info is in the help files, I have created a script for a plain spiral using height and pitch to basically create a spring.

I am then trying to create a sweep along the path of the spiral.

The problem is the FeatuersOperation, an error occurs that I don't understand.

Any help greatly appreciated.

Thank you.

This was hacked from Brian Ekins Archimedean spiral code. 

import adsk.core

import adsk.fusion

import traceback

import math

ui = None

try:

    app = adsk.core.Application.get()

    ui = app.userInterface

    des = adsk.fusion.Design.cast(app.activeProduct)

    root = des.rootComponent

    # Create a new sketch.

    sketch = root.sketches.add(root.xYConstructionPlane)

    # Create points on the spiral

    pnts = adsk.core.ObjectCollection.create()

    # Convert to inches

    diam = .9 * 2.54

    height = 3 * 2.54

    pointsPerRev = 10

    pitch = .2 * 2.54

    rad = diam / 2

    y = 0

    z = 0

    pnts.add(adsk.core.Point3D.create(rad, y, z))

    angle = 360 / pointsPerRev

    newAngle = angle

    for i in range(pointsPerRev * round(height / pitch) + 5😞

        calcAngle = newAngle * math.pi / 180

        x = rad * math.cos(calcAngle)

        y = rad * math.sin(calcAngle)

        z += pitch / pointsPerRev

        pnts.add(adsk.core.Point3D.create(x, y, z))

        newAngle = newAngle + angle

    path = sketch.sketchCurves.sketchFittedSplines.add(pnts)

    crossSketch = root.sketches.add(root.xZConstructionPlane)

    rectLines = crossSketch.sketchCurves.sketchLines

    center = pnts[0]

    crossRectangle = rectLines.addCenterPointRectangle(center, adsk.core.Point3D.create(center.x + .105, center.y + .05, center.z))

    prof = crossSketch.profiles.item(0)

    sweeps = root.features.sweepFeatures

    sweepInput = sweeps.createInput(prof, path, adsk.fusion.FeatureOperations.NewBodyFeatureOperation)

    sweep = sweeps.add(sweepInput)

except:

    if ui:

        ui.messageBox('Failed:\n{}'.format(traceback.format_exc()))

[MichaelT_123 · Accepted solution]

Hi Mr Brad Bylls,

Consider to look deeper into what path is in:

 sweepInput = sweeps.createInput(prof, path, adsk.fusion.FeatureOperations.NewBodyFeatureOperation)

Regards

MichaelT

[brad.bylls]

Hello Michael T.

Thanks for the response.

I found this and added it to my code:

 thePath = sketch.sketchCurves.sketchFittedSplines.add(pnts)

 path = adsk.fusion.Path.addCurves(self, thePath, 0)

The problem now is, I don't know how to define self to see that it works.