Sketch Offset API not honor distance parameter

[matt.zhang105]

Hi,

I am using Sketch Offset API to do a 6 mm offset for a selected profile. However, when I measure it later, it shows the distance between the two loops are not 6 mm.  If I use the UI to offset the same 6mm, it shows exact 6mm when I measure it. In my screen shot, there are 3 loops. The inner one is my sketch. The middle one is generated using my python code. The outer one is using UI. Am I missing something here? Thank you in advance.

Here is my code:

        currentProfile = adsk.fusion.Profile.cast(clonedSketch.profiles[0])

        centerX = (currentProfile.boundingBox.maxPoint.x + currentProfile.boundingBox.minPoint.x) / 2

        centerY = (currentProfile.boundingBox.maxPoint.y + currentProfile.boundingBox.minPoint.y) / 2

        center = adsk.core.Point3D.create(centerX, centerY, 0)

        handle_curves = clonedSketch.offset(curves, center, -0.6)

[JesusFreke · Accepted solution]

I recently reported this as well.

I didn't get any responses from the F360 devs, but I do at least have a workaround for you. Instead of using a negative offset, you can switch the point to the other side of the curve and use a positive offset, and the distance should be correct - at least as far as I've seen.

[matt.zhang105]

@JesusFreke Thank you very much. Your workaround worked very well.

Here is updated code that works:

        curves = clonedSketch.findConnectedCurves(clonedSketch.sketchCurves[0])

        currentProfile = adsk.fusion.Profile.cast(clonedSketch.profiles[0])

        centerX = currentProfile.boundingBox.maxPoint.x + 1

        centerY = currentProfile.boundingBox.maxPoint.y + 1

        center = adsk.core.Point3D.create(centerX, centerY, 0)

        handle_curves = clonedSketch.offset(curves, center, 0.6)

[panwarparam11]

thanks