Blender Foundation: Blender 2.x BF release: Detail: 27358 Transform bug when transform

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[#27358] Transform bug when transform > 500

Date:
2011-05-11 00:32 Priority:
3

State:
Closed

Submitted by:
Reuben Martin (fishb8) Assigned to:
Campbell Barton (campbellbarton)

Category:
Interface Status:
Closed

Relates to: Duplicates:

Patches:

Summary:
Transform bug when transform > 500

Detailed description

When moving an object in 3D space using "G" for grab, and the distance moves beyond 500 (or -500 if in the negative direction) the transform value jumps to 999999552.00

This in using the official Win32 build r36339 on XP. Haven't had a change to test this with a Linux build yet.

Followup

Message

Date: 2011-05-11 11:39
Sender: ronan ducluzeau
ubuntu 11.04 64 bits rev 36592

Reproduced.
Jump happens at a different value if after a zoom in or zoom out.

Date: 2011-05-11 14:21
Sender: Ton Roosendaal
Can't do this in current svn, OSX 32 bits. I use ortho view, zoomed out a lot.
Any more tips for how to reproduce precisely? Adding a .blend is really always advised, even when you think it's not needed. Blender just has too many settings that could cause issues in some combos.

Date: 2011-05-11 17:12
Sender: Reuben Martin
Including blend file.

Steps to reproduce:

- Load factory settings
- "7" for top view of default box
- In user preferences enable continuous grab
- "N" to view transform values from left panel (Included blend file is at this point)
- Select the box and use "G" grab
- Move box by continuously dragging left or right
- At this zoom level, the transform value jumps at a little past +/- 360

Date: 2011-05-11 19:58
Sender: Reuben Martin
Latest SVN build, Linux x86_64 is similar, but different.

It reaches approx +/- 710 and then flips from negative to positive (or vice-versa depending on your direction). So if you move far enough in one directions you end up back where you started. :D

I would guess that the interactive transform tools uses signed values to store the differences in the transform made by the user and what I am seeing is different results between the two platforms when the transform value goes out of range of what the variable type can handle.

Date: 2011-05-12 16:18
Sender: Ton Roosendaal
Campbell: issue with continuous grab, should be nice one for you :)

Date: 2011-05-16 07:13
Sender: Campbell Barton
The limitation has been removed within blender but Xorg still clamps to short internally.
reported to xorg:
https://bugs.freedesktop.org/show_bug.cgi?id=37244

closing since its a limitation of Xorg, and this is not an very common problem.

Attached Files:

Name	Date	Download

Tansform_jump.blend	2011-05-11 17:12	Download

Changes:

Field	Old Value	Date	By

status_id	Open	2011-05-16 07:13	campbellbarton
close_date	None	2011-05-16 07:13	campbellbarton
Status	Investigate	2011-05-16 07:13	campbellbarton
assigned_to	none	2011-05-12 16:18	ton
File Added	16348: Tansform_jump.blend	2011-05-11 17:12	fishb8
details	When moving an object in 3D space using "G" for grab, and the distance moves beyond 500 (or -500 if in the negative direction) the transform value jumps to 999999552.00 This in using the official Win32 build r36339 on XP. Haven\'t had a change to test this with a Linux build yet.	2011-05-11 14:21	ton
Status	New	2011-05-11 14:21	ton