Bezier Hook to New Object does not work properly #40877

New Issue

Jack J · 2014-06-29T20:49:54+02:00

Jack J commented

2014-06-29 20:49:54 +02:00

System Information
ArchLinux 3.15.1-1-ARCH
GC: Nvidia GeForce 530 GT

Blender Version
Broken: 2.71 (Hash 9337574)
Worked: 2.70a (Hash f93bc76)

Bezier Hook to New Object does not work properly

Exact steps for others to reproduce the error

Add a Bezier Curve
Go to the Edit Mode
Press V and select (Set Handle Type) to Vector
Select left-one Handle point
Extrude it by Z coord. (ex: E -> Z -> 2 -> Enter)
Select the corner point of bezier curve
Press Ctrl+H (Hooks) and choose "Hook to new object"

Now leave the Edit mode (back to Object Mode) and try to move newrly created Null object. You may see, that in 2.71 Null object doest not move the corner of the curve.

Not Work:

Work:

**System Information** ArchLinux 3.15.1-1-ARCH GC: Nvidia GeForce 530 GT **Blender Version** Broken: 2.71 (Hash 9337574) Worked: 2.70a (Hash f93bc76) Bezier Hook to New Object does not work properly **Exact steps for others to reproduce the error** 1) Add a Bezier Curve 2) Go to the Edit Mode 3) Press V and select (Set Handle Type) to Vector 4) Select left-one Handle point 5) Extrude it by Z coord. (ex: E -> Z -> 2 -> Enter) 6) Select the corner point of bezier curve 7) Press Ctrl+H (Hooks) and choose "Hook to new object" Now leave the Edit mode (back to Object Mode) and try to move newrly created Null object. You may see, that in 2.71 Null object doest not move the corner of the curve. Not Work: ![notwork.png](https://archive.blender.org/developer/F96023/notwork.png) Work: ![work.png](https://archive.blender.org/developer/F96025/work.png)

Jack J commented

2014-06-29 20:49:54 +02:00

Changed status to: 'Open'

Jack J commented

2014-06-29 20:49:54 +02:00

Added subscriber: @JackyJuice

Jack J commented

2014-06-29 20:55:28 +02:00

2.71 version bug
bug.blend

2.71 version bug [bug.blend](https://archive.blender.org/developer/F96027/bug.blend)

Campbell Barton commented

2014-06-30 05:59:09 +02:00

Added subscriber: @ideasman42

Campbell Barton commented

2014-06-30 05:59:09 +02:00

The steps aren't that clear, not sure what you mean Extrude it by Z coord,
The other steps make sense but I can't redo the bug.

Could you include a blend file with the selection set, immediately before you add the hook?

Note that hooks on vector handles aren't likely to be so useful, but don't think we should prevent it, because you may add a hook, then change handle types its hard to completely avoid.
Nevertheless, if this is a bug, we should fix of course.

The steps aren't that clear, not sure what you mean **Extrude it by Z coord**, The other steps make sense but I can't redo the bug. Could you include a blend file with the selection set, immediately before you add the hook? Note that hooks on vector handles aren't likely to be so useful, but don't think we should prevent it, because you may add a hook, then change handle types its hard to completely avoid. Nevertheless, if this is a bug, we should fix of course.

Jack J commented

2014-06-30 10:05:02 +02:00

Hi campbellbarton, thx for your reply.

Here is the video that represents the bug:
bug.avi

And .blend file with the selection right before Ctrl+H:
bug.blend

Hi campbellbarton, thx for your reply. Here is the video that represents the bug: [bug.avi](https://archive.blender.org/developer/F96081/bug.avi) And .blend file with the selection right before Ctrl+H: [bug.blend](https://archive.blender.org/developer/F96082/bug.blend)

Jack J commented

2014-06-30 10:10:22 +02:00

And this is the video from ver 2.70a without the bug:
nobug.avi

And this is the video from ver 2.70a without the bug: [nobug.avi](https://archive.blender.org/developer/F96083/nobug.avi)

Campbell Barton commented

2014-07-01 03:41:46 +02:00

Checked with a recent build 2e840e56cf - and cant redo the bug. tested with bug.blend from post, https://developer.blender.org/T40877#9

Also checked with 2.71 release and it works too (adds hook where I'd expect, unlike the in bug.avi)

Could you check with an official 2.71 release build?

Checked with a recent build 2e840e56cf - and cant redo the bug. tested with `bug.blend` from post, https://developer.blender.org/T40877#9 Also checked with 2.71 release and it works too (adds hook where I'd expect, unlike the in bug.avi) Could you check with an official 2.71 release build?

Jack J commented

2014-07-01 11:10:38 +02:00

Im using an official build of blender.
But ok, i've downloaded new archive and tried with it. No changes, its working as before(not hooking to the right object).

But you can see the video above - its not my fantasy :)
So, may be its a bug with my other installed software? What information do you need to proove the bug?

I've got:
ArchLinux 3.15.1-1-ARCH
GC: Nvidia GeForce 530 GT
Python 3.4.1
gcc version 4.9.0 20140604 (prerelease) (GCC)
glibc 2.19-5
libglade 2.6.4-5
mesa 10.2.2-1
nvidia-libgl 337.25-2

Im using an official build of blender. But ok, i've downloaded new archive and tried with it. No changes, its working as before(not hooking to the right object). But you can see the video above - its not my fantasy :) So, may be its a bug with my other installed software? What information do you need to proove the bug? I've got: ArchLinux 3.15.1-1-ARCH GC: Nvidia GeForce 530 GT Python 3.4.1 gcc version 4.9.0 20140604 (prerelease) (GCC) glibc 2.19-5 libglade 2.6.4-5 mesa 10.2.2-1 nvidia-libgl 337.25-2

Campbell Barton commented

2014-07-02 04:14:00 +02:00

The issue reported can't be reproduced so far, and has been moved to the BF Blender: Unconfirmed project.
If 2 other people aren't able to redo the bug after 2 weeks, it will be closed.

We appreciate the effort that goes into making bug reports, but to be able to fix bugs we have to be able to redo them.

The issue reported can't be reproduced so far, and has been moved to the *BF Blender: Unconfirmed* project. If 2 other people aren't able to redo the bug after 2 weeks, it will be closed. We appreciate the effort that goes into making bug reports, but to be able to fix bugs we have to be able to redo them.

Rob Waite commented

2014-07-02 05:37:56 +02:00

Added subscriber: @RJW

Rob Waite commented

2014-07-02 05:37:56 +02:00

iMac OSX 10.9.3
ATI Radeon HD 4850 512 MB
Blender 2.71 #9337574
(Works in 2.70 #19e627c)

Can confirm. Some observations:

in edit mode, in the hook modifier pressing "Select" highlights the final control point in the bezier, not the one originally chosen to have the hook
if there are only 2 control points it works OK
in a chain of 4 control points, if both of the two middle points (points 2 & 3 in the curve) are type vector, it works if the third is chosen but not the second
if a second hook is added to the failing point it works

Then I got bored ;)

iMac OSX 10.9.3 ATI Radeon HD 4850 512 MB Blender 2.71 #9337574 (Works in 2.70 #19e627c) Can confirm. Some observations: - in edit mode, in the hook modifier pressing "Select" highlights the final control point in the bezier, not the one originally chosen to have the hook - if there are only 2 control points it works OK - in a chain of 4 control points, if both of the two middle points (points 2 & 3 in the curve) are type vector, it works if the third is chosen but not the second - if a second hook is added to the failing point it works Then I got bored ;)

Gottfried Hofmann commented

2014-07-02 10:49:38 +02:00

Added subscriber: @GottfriedHofmann

Gottfried Hofmann commented

2014-07-02 10:49:38 +02:00

Can confirm on 2.71 release linux x64

I also noticed that the hook empty is created a little off - not at the same position as the selected curve point.

Can confirm on 2.71 release linux x64 I also noticed that the hook empty is created a little off - not at the same position as the selected curve point.

Campbell Barton commented

2014-07-02 11:08:59 +02:00

Thanks for testing @GottfriedHofmann, moving back to bf-blender,
but strange I cant redo this on same build 2.71 release linux x64

Thanks for testing @GottfriedHofmann, moving back to bf-blender, but strange I cant redo this on same build `2.71 release linux x64`

Gottfried Hofmann commented

2014-07-02 11:15:57 +02:00

Here is a short video where I reproduce the bug:

https://www.dropbox.com/s/0rn36elqkpx6aag/T40877.mp4

(download it, the web-player skips the last few and most important seconds)

Here is a short video where I reproduce the bug: https://www.dropbox.com/s/0rn36elqkpx6aag/T40877.mp4 (download it, the web-player skips the last few and most important seconds)

ronan ducluzeau commented

2014-07-02 15:08:06 +02:00

Added subscriber: @zeauro

ronan ducluzeau commented

2014-07-02 15:08:06 +02:00

The hook is created at center of triangle selection (control points + its handles).

I can reproduce it, too. Simply pressing Assign button of modifier solves the problem.

I think being able to add a hook to Curve handles is an interesting feature.
In this case, for vector handles, it is irrelevant.
But think about animating a 2D Bezier Shape who looks like changing a 6 branches Star into a 6 petals Flower or dozen of waves with a stage set look, simply by transforming an empty.

Of course, something like that can be done by curve shapes. But it is more efficient to transform (move, scale, rotate) an empty than to create several shapes for that.

The hook is created at center of triangle selection (control points + its handles). I can reproduce it, too. Simply pressing Assign button of modifier solves the problem. I think being able to add a hook to Curve handles is an interesting feature. In this case, for vector handles, it is irrelevant. But think about animating a 2D Bezier Shape who looks like changing a 6 branches Star into a 6 petals Flower or dozen of waves with a stage set look, simply by transforming an empty. Of course, something like that can be done by curve shapes. But it is more efficient to transform (move, scale, rotate) an empty than to create several shapes for that.

Sergey Sharybin was assigned by Campbell Barton

2014-07-03 00:10:45 +02:00

Campbell Barton commented

2014-07-03 00:10:45 +02:00

@GottfriedHofmann, thanks for the video - I tried the exact same steps and it still works fine for me.

Assigning to Sergey to check

@GottfriedHofmann, thanks for the video - I tried the *exact* same steps and it still works fine for me. Assigning to Sergey to check

blender-admin commented

2014-07-07 09:44:24 +02:00

This issue was referenced by f4cf84507b

This issue was referenced by f4cf84507b4653c317f7df581f600175566cabcf

Sergey Sharybin commented

2014-07-07 09:44:49 +02:00

Changed status from 'Open' to: 'Resolved'

Sergey Sharybin closed this issue

2014-07-07 09:44:49 +02:00

Sergey Sharybin commented

2014-07-07 09:44:49 +02:00

Closed by commit f4cf84507b.

Closed by commit f4cf84507b.

Sign in to join this conversation.

No Label

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

Bezier Hook to New Object does not work properly #40877