Copy/past multiple lines/splines in 2d sketch

[richop88]

Hi,

I'm looking into making a script where I can take a line or spline as input and spread them out equally, and then spread the distances using a function.

I'm searching and getting conflicting results, is it possible to use a spline as an input to clone? Is it possible to clone sketch lines programmatically? Obviously there's a script for rectangular and circular, I was just wondering if I could hack the rectangular distribution script, although I can't get the script I've found to work(I've placed after import/def run): https://forums.autodesk.com/t5/fusion-360-api-and-scripts/add-rectangular-patterns-to-the-sketch-via...

Is it even possible in the first place? Before I invest myself in this project!

[kandennti]

Hi @richop88 .

Although not very practical, I created sample code.

・ Only a single curve can be selected.
・ All cloned sketch curves are NurbsCurve.

# Fusion360API Python script
# SketchCurve RectangularPatternLike sample

import adsk.core, adsk.fusion, traceback

def run(context):
    ui = None
    try:
        # set pattern param
        x_count = 5
        y_count = 3
        x_pich = 2.0
        y_pich = 3.0

        # get obj
        app  :adsk.core.Application = adsk.core.Application.get()
        ui   :adsk.core.UserInterface = app.userInterface
        des  :adsk.fusion.Design = app.activeProduct
        root :adsk.fusion.Component = des.rootComponent

        # Select SketchCurve
        msg :str = 'Select SketchCurve'
        selFiltter :str = 'SketchCurves'
        sel :adsk.core.Selection = selectEnt(ui, msg ,selFiltter)
        if not sel: return

        # get select obj
        crv :adsk.fusion.SketchCurve = sel.entity
        skt :adsk.fusion.Sketch = crv.parentSketch

        # get Vector
        x_vec = skt.xDirection
        y_vec = skt.yDirection

        # get Matrix
        vec3d = adsk.core.Vector3D
        mat3d = adsk.core.Matrix3D
        matLst = []
        for x in range(x_count):
            for y in range(y_count):
                vec = vec3d.create(x_pich * x, y_pich * y, 0.0)
                mat = mat3d.create()
                mat.translation = vec
                matLst.append(mat)
        matLst = matLst[1:]

        # get Geometry info
        geo = crv.worldGeometry
        if hasattr(geo, 'asNurbsCurve'):
            geo = geo.asNurbsCurve

        (returnValue, controlPoints, degree, knots, isRational, weights, isPeriodic) = geo.getData()

        # init sketch curve
        nurbs3d = adsk.core.NurbsCurve3D
        fitCrv = skt.sketchCurves.sketchFittedSplines
        for mat in matLst:
            nurbs = nurbs3d.createRational(controlPoints, degree, knots, weights, isPeriodic)
            nurbs.transformBy(mat)
            fitCrv.addByNurbsCurve(nurbs)
        
        # fin
        ui.messageBox('Done')

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

def selectEnt(
        ui :adsk.core.UserInterface,
        msg :str, 
        filtterStr :str) -> adsk.core.Selection :

    try:
        sel = ui.selectEntity(msg, filtterStr)
        return sel
    except:
        return None

[richop88]

Thank you so much @kandennti for taking the time to answer this question! The script works perfectly!

So now I can just write a small bit of code and turn x_pitch to some sort of formula.

Would it be better to make an array in pyton to hold variables, or should I just write the function directly in place where "x_pitch * x"?

Thank you so much!

[kandennti · Accepted solution]

I'm sorry.

Because the confirmation was not enough, the support surface of sketch was not correctly processed other than the XY plane of RootComponent.

In addition, there were many unnecessary codes.

・・・
        # get obj
        app  :adsk.core.Application = adsk.core.Application.get()
        ui   :adsk.core.UserInterface = app.userInterface
        # des  :adsk.fusion.Design = app.activeProduct # unused
        # root :adsk.fusion.Component = des.rootComponent # unused

        # Select SketchCurve
        msg :str = 'Select SketchCurve'
        selFiltter :str = 'SketchCurves'
        sel :adsk.core.Selection = selectEnt(ui, msg ,selFiltter)
        if not sel: return

        # get select obj
        crv :adsk.fusion.SketchCurve = sel.entity
        skt :adsk.fusion.Sketch = crv.parentSketch

        # get Vector
        # x_vec = skt.xDirection # unused
        # y_vec = skt.yDirection # unused

        # get Matrix
        vec3d = adsk.core.Vector3D
        mat3d = adsk.core.Matrix3D
        matLst = []
        for x in range(x_count):
            for y in range(y_count):
                vec = vec3d.create(x_pich * x, y_pich * y, 0.0)
                mat = mat3d.create()
                mat.translation = vec
                matLst.append(mat)
        matLst = matLst[1:]

        # get Geometry info
        # geo = crv.worldGeometry # NG
        geo = crv.geometry
        if hasattr(geo, 'asNurbsCurve'):
            geo = geo.asNurbsCurve
・・・

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Would it be better to make an array in pyton to hold variables, or should I just write the function directly in place where "x_pitch * x"?

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I think that's probably the case.
Please change and enjoy.