AFTER 2.71 - Scaling to zero with manipulate center points works precisely on second time #40432

New Issue

Piotr Komisarczyk · 2014-05-29T22:24:45+02:00

Piotr Komisarczyk commented

2014-05-29 22:24:45 +02:00

System Information
Operating system and graphics card
Windows 7 64bit, Nvidia GT 650M (Dell Inspiron 7720)

Blender Version
Broken: 2.71 Test Build, HASH: c56bbcc
Worked: probably never...

Short description of error
I have 3 objects on my scene. When manipulate objects centers is turned on (ALT-,) and pivot is set to 3DCursor (which is in center of grid) and I do S 0 ENTER (scaling by zero) the location of objects after scalling is a bit off. It should be for each object (0,0,0) and it is something like (0,3mm,0.25mm, -0.25mm). However when I repeat scaling for the second time the values for location are OK (0,0,0).

Exact steps for others to reproduce the error
Attachment shows steps: Layer 1, Layer2 initial scaling, Layer 3 second scaling
ScaleZeroManipulateCentersBug.blend

**System Information** Operating system and graphics card Windows 7 64bit, Nvidia GT 650M (Dell Inspiron 7720) **Blender Version** Broken: 2.71 Test Build, HASH: c56bbcc Worked: probably never... **Short description of error** I have 3 objects on my scene. When manipulate objects centers is turned on (ALT-,) and pivot is set to 3DCursor (which is in center of grid) and I do S 0 ENTER (scaling by zero) the location of objects after scalling is a bit off. It should be for each object (0,0,0) and it is something like (0,3mm,0.25mm, -0.25mm). However when I repeat scaling for the second time the values for location are OK (0,0,0). **Exact steps for others to reproduce the error** Attachment shows steps: Layer 1, Layer2 initial scaling, Layer 3 second scaling [ScaleZeroManipulateCentersBug.blend](https://archive.blender.org/developer/F91887/ScaleZeroManipulateCentersBug.blend)

Piotr Komisarczyk commented

2014-05-29 22:24:45 +02:00

Changed status to: 'Open'

Piotr Komisarczyk commented

2014-05-29 22:24:45 +02:00

Added subscriber: @komi3d

Piotr Komisarczyk commented

2014-05-29 22:27:18 +02:00

This also happens for other pivot types like active object. this type of scaling is really helpful when aligning objects.

Fazekas Laszlo commented

2014-05-30 07:56:21 +02:00

Added subscriber: @totoro-4

Fazekas Laszlo commented

2014-05-30 07:56:21 +02:00

It seems that the scaling factor is exactly 0.0001 in this case - maybe a value limitation somewhere in the code.

Bastien Montagne was assigned by Sergey Sharybin

2014-05-30 11:19:04 +02:00

Sergey Sharybin commented

2014-05-30 11:19:04 +02:00

Added subscribers: @mont29, @Sergey

Sergey Sharybin commented

2014-05-30 11:19:04 +02:00

That's probably just a precision issue..

@mont29, mind having a look into this report please? :)

That's probably just a precision issue.. @mont29, mind having a look into this report please? :)

Bastien Montagne commented

2014-05-30 21:23:02 +02:00

Added subscriber: @ideasman42

Bastien Montagne commented

2014-05-30 21:23:02 +02:00

In fact, this is an internal limitation set to numinput for scaling, “no_zero”, which prevents getting 0.0 scale (code switches it to 0.0001 in this case, indeed).

Now, made a quick test without this limitation, and everything seems to work ok, so not quite sure why it is here… Would like to summon our transform code expert here, Campbell, what do you think?

In fact, this is an internal limitation set to numinput for scaling, “no_zero”, which prevents getting 0.0 scale (code switches it to 0.0001 in this case, indeed). Now, made a quick test without this limitation, and everything seems to work ok, so not quite sure why it is here… Would like to summon our transform code expert here, Campbell, what do you think?

Bastien Montagne changed title from ~~Scaling to zero with manipulate center points works precisely on second time~~ to AFTER 2.71 - Scaling to zero with manipulate center points works precisely on second time

2014-06-02 14:59:30 +02:00

Bastien Montagne commented

2014-06-02 15:01:19 +02:00

In fact, this has been working this way since ages (2008 at least), I would say we can remove this limitation now (would also like to increase behavior when scale is NULL, currently we can’t grow it again from transform tool, which seems rather stupid).

Anyway, this is not something to touch just before a release, will have to wait a bit.

In fact, this has been working this way since ages (2008 at least), I would say we can remove this limitation now (would also like to increase behavior when scale is NULL, currently we can’t grow it again from transform tool, which seems rather stupid). Anyway, this is not something to touch just before a release, will have to wait a bit.

Piotr Komisarczyk commented

2014-06-03 12:39:02 +02:00

Ok. Thanks for taking a look at this. Hopefully it will be fixed in next releases :) It can really be a useful tool for quick and precise alignment along specified axises. Cheers.

blender-admin commented

2014-07-21 17:13:48 +02:00

This issue was referenced by 1526620416

This issue was referenced by 15266204164fe94074a1a4867d9ff01d71d02e0d

Bastien Montagne commented

2014-07-21 17:19:38 +02:00

Changed status from 'Open' to: 'Resolved'

Bastien Montagne closed this issue

2014-07-21 17:19:38 +02:00

Bastien Montagne commented

2014-07-21 17:19:38 +02:00

Closed by commit 1526620416.

Closed by commit 1526620416.

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AFTER 2.71 - Scaling to zero with manipulate center points works precisely on second time #40432