How to grab line & curve lengths from child blocks

[Stephanie_C]

Hello,

I am drafting a raglan sleeve jumper, according to Winefred Aldrich instructions.

I need to grab the length of a part of the sleeve curve and plot it as a point on my armhole. I’ve noticed, after encountering this issue, that basically on my sleeve block I can use info from my bodice block, but I can’t use line lengths/angles/etc. from my sleeve block to draft on my bodice. I’m assuming that this is because of the sequential order of how Seamly software is coded… but still… can you offer any solution or advice please?

For now I’m just going to make note of the length and then go back to the bodice block and paste the length in manually by numbers, but this is not great as it misses the whole benefit of drafting on seamly which is being able to update the formulas and measurements and stuff

[Pneumarian]

Yup, you’ve correctly identified what going on. Parent Blocks & Nodes/items cannot be conceived by means of child Blocks or Nodes/items. It would cause a temporal paradox & implode the universe

Would I be correct in assuming that you are placing Notches here? In that case it might be best to just place them at X units from the edge, perhaps with an IF formula: (SplPath_A17_A5>25?5:2) (If SplPath_A17_A5 is greater than 25 then the answer is 5, otherwise the answer is 2)

It’s also possible to nest IF functions, a capability which I am currently exploring so as to make patterns fit-accessible to a wider range of body-types.

However, if that won’t work for your needs, it might be preferable to re-draft the sleeve in the same Block. In general, having all related pattern pieces drafted in the same block is probably the way to go, as aggravating as it can be.

[Douglas]

@Pneumarian

Parent Blocks & Nodes/items cannot be conceived by means of child Blocks or Nodes/items. It would cause a temporal paradox & implode the universe

@Pneumarian

It’s also possible to nest IF functions, a capability which I am currently exploring so as to make patterns fit-accessible to a wider range of body-types.

Yup… either of the ternary conditions can be expressed as another conditional expression… the more nesting the more ()'s.

@Stephanie_C

I’m assuming that this is because of the sequential order of how Seamly software is coded… but still… can you offer any solution or advice please?

Yup, and because of that right now you’re probably at that learning stage we’ve all been through trying to figure out what workflow works best for us. I think as @Pneumarian has pointed out you may find that drafting in 1 block works best for you. The more you use Seamly2D you’ll start to know what order to draft parts in - even if it doesn’t strictly follow some given drafting instructions - so you don’t end up with not having a line length or angle available to use.

[Stephanie_C]

Yep I’m not bothered to redraft the whole sleeve so I guess I know for next time to keep blocks in one block!

Thanks