Surfaces Make Segment wrong behaviour #31480

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Pep · 2012-05-16T10:38:01+02:00

Pep commented

2012-05-16 10:38:01 +02:00

%%%Take the provided blend file. Just press (F) for "Make Segment". You'll see both surfaces are joined. However 2 weird things happen:

The resulting surface is not the active surface (there is no active surface).
U curves become V curves, and V curves become U curves on the new surface.

The last point would be understandable if you join, let's say a U side with a V side: one of the surfaces must change curve directions, but in the example it wasn't the case.

That brings one thought: currently joining a U side with a V side is possible. Shouldn't there be an option to choose which of the 2 surfaces switches curve directions? Or, as an alternative, perhaps don't allow U-V joins, but add an operator that switches curve directions to the selected surface? Just a thought.

And finally, another weird thing: if you take the provided blend file, and you do something like just save, the active surface is not active anymore. It looks like any operation makes you lose the active surface.

Regards,

Pep.
%%%

%%%Take the provided blend file. Just press (F) for "Make Segment". You'll see both surfaces are joined. However 2 weird things happen: - The resulting surface is not the active surface (there is no active surface). - U curves become V curves, and V curves become U curves on the new surface. The last point would be understandable if you join, let's say a U side with a V side: one of the surfaces must change curve directions, but in the example it wasn't the case. That brings one thought: currently joining a U side with a V side is possible. Shouldn't there be an option to choose which of the 2 surfaces switches curve directions? Or, as an alternative, perhaps don't allow U-V joins, but add an operator that switches curve directions to the selected surface? Just a thought. And finally, another weird thing: if you take the provided blend file, and you do something like just save, the active surface is not active anymore. It looks like any operation makes you lose the active surface. Regards, Pep. %%%

Pep commented

2012-05-16 10:38:01 +02:00

Changed status to: 'Open'

Sergey Sharybin commented

2012-06-21 12:57:00 +02:00

%%%Issue with loosing active spline is indeed seems strange.

Switching direction of surfaces on join is quite tricky. That's obvious for you in which order surfaces should be joined, but that's a bit more tricky from code. This is possible to solve, but would make things more difficult to maintain. I'd say if there'll be operator to switch u/v manually, we could leave joining as-is and if it flipped u/v in a way you don't expect this -- you might manually correct this. This seems to be easier than disalloving joining surfaces with by sides and manually switching directions for surfaces before join.%%%

%%%Issue with loosing active spline is indeed seems strange. Switching direction of surfaces on join is quite tricky. That's obvious for you in which order surfaces should be joined, but that's a bit more tricky from code. This is possible to solve, but would make things more difficult to maintain. I'd say if there'll be operator to switch u/v manually, we could leave joining as-is and if it flipped u/v in a way you don't expect this -- you might manually correct this. This seems to be easier than disalloving joining surfaces with by sides and manually switching directions for surfaces before join.%%%

Sergey Sharybin commented

2012-06-26 12:22:14 +02:00

%%%Issue with resetting active spline was fixed in svn rev48309.

As for unexpected U/V rotation -- it's not actually a bug, moving to TODO: http://wiki.blender.org/index.php/Dev:2.5/Source/Development/Todo/Tools#Curves%%%

%%%Issue with resetting active spline was fixed in svn rev48309. As for unexpected U/V rotation -- it's not actually a bug, moving to TODO: http://wiki.blender.org/index.php/Dev:2.5/Source/Development/Todo/Tools#Curves%%%

Sergey Sharybin commented

2012-06-26 12:22:15 +02:00

Changed status from 'Open' to: 'Archived'

Sergey Sharybin closed this issue

2012-06-26 12:22:15 +02:00

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Reference: blender/blender#31480

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Surfaces Make Segment wrong behaviour #31480