making a 3D spline using points of existing sketch splines

[franck.gressier]

I have been searching to do this in various ways but nothing worked out.

What I want to do:

I have a bunch of sketch splines that I use to create a loft.

As guide rail I would like to make a spline going by point #5 of each of the sketch splines...

xYplane = design.rootComponent.xYConstructionPlane
sketch3dSplines = sketches.add(xYplane)
sketch3dSplines.name ="sketch3dSplines"
SplineRailPoints = adsk.core.ObjectCollection.create()
for loc in sections: # I have a dictionary indexing my sketch Splines
    courbe = sketchsProfils[loc].sketchCurves.sketchFittedSplines.item(0)
    sketch3dSplines.include(courbe.fitPoints(5))
    SplineExPoints.add(sketch3dSplines.points(-1))

SplineEx = sketch3dSplines.sketchCurves.sketchFittedSplines.add(SplineExPoints)

This says that SkechPointList object is not callable... when I try to include the spline fitPoint  5 .

Adding without including isn't better.

I have also tryed to make a list of the points while creating the splines but then I get a curve all messed up in the xY plane and not at all what I expect...

Do I need to add some .geometry in this ?

[franck.gressier · Accepted solution]

I have kept searching.

I can access the 3d coordinates of the points like this:

import adsk.core, adsk.fusion, traceback


def run(context):
    ui = None
    try:
        app = adsk.core.Application.get()
        ui = app.userInterface

        spline = adsk.fusion.SketchFittedSpline.cast(ui.activeSelections.item(0).entity)
        if spline:
            result = ''
            for sketchpoint in spline.fitPoints:
                point = sketchpoint.worldGeometry
                result += '{}, {}, {}\n'.format(point.x, point.y, point.z)
            ui.messageBox('Spline points: {}\n {}'.format(spline.fitPoints.count, result))

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

But that is not really what I want. I would like to reuse the existing points.

I guess I could create new points and merge but it seems heavy. 

[franck.gressier]

Sometimes you look for complicate things....

Not callable is because I used "()" which are for functions...

.item(5) is better.

[5] could do I guess

But I get another error:

However, i was able to avercome this with world.geometry...

This works ! 🐵

import adsk.core, adsk.fusion, traceback


def run(context):
    ui = None
    try:
        app = adsk.core.Application.get()
        ui = app.userInterface
        design = app.activeProduct
        comp = design.activeComponent
        #ui.messageBox(comp.name)
        sketches = comp.sketches
        SplineExPoints = adsk.core.ObjectCollection.create()

        for sk in sketches:
                spline = sk.sketchCurves.sketchFittedSplines.item(0)
                SplineExPoints.add(spline.fitPoints.item(5).worldGeometry)

        xYplane = design.rootComponent.xYConstructionPlane
        sketch3dSplines = sketches.add(xYplane)
        SplineEx = sketch3dSplines.sketchCurves.sketchFittedSplines.add(SplineExPoints)


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