Point Set - Curve Percentage - does not work as it should

[stevethb]

Hi

I`m trying to create two points on a spline curve at the 33% and 66% of the spline lenght

I use Point Set - Curve Points and Curve Percentage Subtype.

It creates points but when I later on divide original spline with created points -> divided curves are not equal.
Even when you look at the attached picture it clearly shows that points are not distributed equally.

Any ideas why it does not work ?

 

[Xwheelguy]

Knowing the version of NX you're using would be helpful....

Tim Flater
NX Designer
NX 9.0.3.4 Win7 Enterprise x64 SP1
Intel Core i7 2.5GHz 16GB RAM
4GB NVIDIA Quadro K3100M

 

[stevethb]

I use NX 9.0.2.5

 

[adkad]

Hi Stevethb,

Try "geometric progression" subtype.

Thanks,
adkad

 

[stevethb]

Hi adkad

Thanks for the tip but

geometric progression works fine but only when you have progression. It will not allow me to place points as "percentage subtype" where I have a list and I could put 33%, 66% and for example 55% in one feature.

Although I could do it in two/three separate features but it`s only a workaround.

 

[Xwheelguy]

It's obviously not working as it should in regards to the location percentage and about all we can provide is a workaround. If that isn't suitable, try calling GTAC and report the bug. It might be fixed in a later release, in which case you'll need to update for that fix to apply, obviously. I would strongly suggest you mention that GTAC look at all the percentage methods other than 0 and 100, because that seems to be where the fault lies in my few trials.

You could use Equal Arc Length and place 4 points starting at 0 and ending at 100, ignore the endpoints and use the 2 between the ends to divide the curve. That's the only method I've found that consistently works through the length of a spline.



Tim Flater
NX Designer
NX 9.0.3.4 Win7 Enterprise x64 SP1
Intel Core i7 2.5GHz 16GB RAM
4GB NVIDIA Quadro K3100M

 

[BubbaK]

I tried Edit --> Curve --> Divide, with the Equal Arclength option, and that seems to work. And it sounds like dividing the curve is what you're actually trying to do, anyway.