Help me understand the grain arrow and grain direction (when they don't agree)
I've been working with a project where I want all the patterns to have vertical grain line. That's what the grain arrows show, and that's how the fabric textures render. However I now realize the grain direction in the property editor are still set to various angles. I can't change these without also changing the grain arrow and texture. First question, does the simulated drape follow the grain direction? I suspect it does. I replaced one piece and the drape looks more like I'd expect. Second, should it be possible for these numbers to disagree, and if so how can the two values be adjusted independently?
I know how this has happened, I traced the pattern pieces off a larger pattern, rotated them and set the grain using "align grain to y-axis" and at that point the two values for a given pattern didn't agree. The only fix I found is instead to trace a pattern with the underlying piece oriented vertically (either making a copy of my copy, or doing this from the get go).
E.g. this is what I had, the grain mark looks good, not the grain direction:
If I try to fix the grain direction, the grain arrow and texture rotate, too:
If I instead trace the pattern with it's grain arrow parallel to the y-axis, I get a new pattern where arrow and grain direction agree (and presumably fabric drape and fabric texture also agree):
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Hi jne4sl. Sounds like you want to change the visual of the grain but leave the actual grain line vertical. This can be done by rotating your "print" direction. Using your Edit Texture tool in either 3D or 2D select pattern piece. A black gizmo will appear in the upper Right corner (see below) This allows you to either scale the print by click and dragging the the bars or Rotate the print using the curved arrow. Your grain line will stay, but the print direction will change
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That doesn't quite do it. First I have five patterns at random angles, so I'd need five new fabrics if I want to adjust each texture individually to match the grain. Second, it is then just a texture applied at an off grain, and if I switch fabric the problem is back (also the marked grain will be all over the place, while the texture looks good). All I really want is each of these patterns cut with a vertical grain from a fabric with a texture aligned on the vertical grain. When I create a trace off the pattern, I get exactly that, but then of course I'd have to swap out each individual pattern. But I do see how to avoid this problem in the future. Is there anything else I'm missing?
Also, does the "grain direction" entry dictate the simulation properties of the pattern piece?
White sleeve is the traced pattern. Green is rotated using your instructions, grain direction good, texture good, but the grain marking is wrong so I couldn't apply another fabric:
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You have an origination problem when you created the pattern piece relative. To over come that, you could copy all your current pattern pieces external shape when aligned to the position they would be cut on the fabric (roll). Then create one large rectangular piece of cloth (eg: fabric sheet) and copy the external line of each pattern as an internal line copy and paste onto the large rectangular fabric sheet, on the grain line that is common to all pattern pieces. Keep doing that for each pattern piece until you have all the pattern outlines on the new rectangular single fabric sheet > then cut them all out as new pattern pieces. This should solve your issue.
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ottoline, thanks that seems to be it, I'm just used to the two agreeing, and wasn't sure if there was something I was missing.
The trace tool takes care of it without the new rectangle. If I align each pattern with the grain I want and trace, I get what I want. If I had aligned the item I traced from with the grain I wanted, before tracing (or cutting), I'd get the right thing. So I can fix this, and avoid it next time with more care, but catching it late I have some work to fix it.
I'm still confused about whether it ever makes sense for these two directions to be different, the marked grain line and the "grain direction" value.
I'm new to this, it seems there are four orientations to think about. There's the orientation of the 2D pattern, that should mostly be irrelevant since there needs to be freedom to move patterns around, that's just drafting, but trace tool does make use of it. There's the orientation of the texture, that needs freedom, because you can print a fabric with a plaid on the bias, or the like. There's the grain marking for cutting the piece, and that's the most familiar and the most clearly marked but it's a little inaccessible since it's set by copying alignment and using right click options. Then there's the one I was ignoring, the "grain direction" entry I think this is what sets simulation properties of the piece. Is that correct? Since this is really simulating fabric as cut, this really should be the same as the marked grain in all practical situations, and the software mostly forces this, because they can't be altered independently. Still here's a place where they aren't the same, so I guess there really are four orientations associated with a pattern piece (at least internally).
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