Intersecting lines when grading
Hi,
I'm trying to grade my pattern after watching the CLO tutorial on grading.
For some reason on my smaller sizes the lines are intersecting and causing some weird shapes. How can I correct this?
Also, is there a way to just clear-out the grading so I could start fresh? I tried to delete it but it wouldn't go away.
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To delete your grading go to your Grading Tab in the Object Browser and Click on the trash can Icon to remove certain sizes or all grading.
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Hi,
Thanks for the feedback, and I knew about that feature, but unfortunately that's not what I was looking for.
I don't want to delete all of my sizes, bc then I'd have to re-do all of that work. I just want to eliminate the grade that was causing the issues, so I can fix it.
I did eventually figure this out - you have to select the grading tool, select the line/point, and then right click and "reset grading values"
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Right click on a point or segment that is going wrong and choose "Reset Grading Values". It will clear the work from that selection only. The worst problems occur when grading from a central size in the range. Grading up from the smallest size works well, and maybe grading down from the largest. There is definitely a bad negative sign in the code somewhere. What seems to happen is the points move correctly, but the "handle" of a curve sometimes gets flipped 180 degrees when grading down.
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hi jrussell, thanks for your help!
Yes, I was actually having that exact same thought dawn on me- that I've only ever seen a tutorial where they grade UP, but never grading around a a central size. Plus, when I look at the way the grading input happens, it does seem to be always relating to the size smaller.
Agreed- this is a pretty big issue, since most styles are developed around the middle of the size range and then graded up and down from there. I get that this program isn't maybe geared towards real-life patternmakers, although I would like to think that one could use CLO to develop a first pattern & review how a style might look in a variety of sizing & colors/prints before moving forward with it in the style-development process. I hope this improves in time.
I think from here on out I might just develop & grade my patterns in another CAD program and then import them for 3D visualization only. I'd love for CLO to be my only tool but I'm not sure I can work around this issue with the grading, it's a pretty big one!
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If possible, start by applying grading to points, even if that means duplicating work on both ends of a straight segment. Then switch to curve grading if needed. The odd grading issues seem to come from the way CLO handles an adjacent curve when a segment is moved (it holds all the curve points fixed). You can see this even when you aren't grading. Just play around in the editing window with a simple pattern, grabbing different pieces and wiggling them around. If you move a point, curve points on adjacent edges are free to move in a predictable way. But if you grab an entire edge, the curve points are held fixed, and this creates some unexpected shapes.
So moving a side seam in like this during grading will mean following up by adjusting the curve points in the armhole. But try something similar moving a point and the armhole deforms more predictably.
It's just being presented with a family of these curves during grading that makes this difficult, I think during editing we developing a sense of how not to move things. And probably both armholes will require more adjusting, it's just the "S" curve is unsettling.
Here's a grade caused by moving the side seam, the culprit is the two fixed curve points in the armhole:
Add grading to the lower curve point, and things improve:
Anyway, I think grading in CLO is working very well, this issue may really be that CLO gives you more freedom to confuse things.
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