Blender Foundation: Blender 2.x BF release: Detail: 26551 Disappearing effect of Shrinkwrap modifier

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[#26551] Disappearing effect of Shrinkwrap modifier

Date:
2011-03-19 21:14 Priority:
3

State:
Closed

Submitted by:
Mikhail Rachinskiy (alm) Assigned to:
Nobody (None)

Category:
Modifiers Status:
Fixed / Closed

Relates to: Duplicates:

Patches:

Summary:
Disappearing effect of Shrinkwrap modifier

Detailed description

1. Start Blender
2. Create the Plane and move him on 3 units up
3. Sel Cube and add Srinkwrap modifier, Target choose Plane
*now all Cube projected into Plane*
4. Sel Plane and move him to layer 2
5. Go to layer 3
6. Create Sphere and change number of segments
7. Go back to layer 1
*now Cube is not projected anywhere*

To bring back modifier effect you must turn on both layers (1 & 2) and move, rotate, etc. Cube, or turn on (or off) Scene Simplifycation.

This is not only one issue calling off Shrinkwrap effect, some times when I just swiching between layers Shrinkwrap effect is disappear, but I could not reproduce this behavior.

In Attached file go to layer 3 and follow the instructions from the fifth item.

Platform:
================================
Windows 7 Home Premium x32

OpenGL:
================================
- Renderer: ATI Radeon HD 4770
- Vendor: ATI Technologies Inc.
- Version: 3.3.10362 Compatibility Profile Context

Blender:
================================
Version: 2.56 (sub 3)
Revision: 36608

Followup

Message

Date: 2011-03-20 15:57
Sender: Ton Roosendaal
No time now to investigate, but did you use the hotkeys for layers (1 2 3 etc) or the layer buttons in the view3d header?
I know the hotkeys send refresh events for meshes, the layer buttons not (yet)...

Date: 2011-03-20 17:42
Sender: Mikhail Rachinskiy
OK. I figured it out.
I attached new blend file "Shrinkwrap effect 2", use it and follow instructions below.

Shrinkwrap effect is disappear when open blend file, and switching betweeng layers.
No matter betweeng hotkeys and layer buttons.

First part
-------------------------------------------------------------------------------------------------------------------------------------
1. Open blend file and go to layer 6
*has you noties in layer 1 two objects is projected normaly*
2. Go to layer 6
*in layer 6 two objects is not projected at all, but when I save file all objects projected normaly*
-------------------------------------------------------------------------------------------------------------------------------------

Second part
-------------------------------------------------------------------------------------------------------------------------------------
3. Turn on Scene Simplification
*zing! two objects projected normaly*
4. Go back to layer 1
*doh, objects in layer 1 is not projected*
5. Turn off Scene Simplification
*objects in layer 1 is projected normaly*
6. Go to layer 6
*zing!*
-------------------------------------------------------------------------------------------------------------------------------------

Date: 2011-03-22 13:32
Sender: Ton Roosendaal
This is far too complicated for me... I don't even know what shrinkmap does really :)
I thought it was a layer-flip bug?

You use objects with 6 layers of modifiers, all spread around in different layers. How this (can) work I don't know.
For me it would be far easier if you reduce the setup to a singular case only using shrinkwrap and 2 objects to illustrate issues with switching layers. (that i can investigate).

It probably is something else though... related to having so many relationships in modifier stack.

Date: 2011-03-22 16:28
Sender: Mikhail Rachinskiy
Do not use instructions in my message and "Shrinkwrap effect 2.blend", only instructions in "Detailed description" and "Shrinkwrap effect.blend".
I create another bugreport for other case.

And not shrinkmap, Shrinkwrap Modifier - this modifier project geometry on other geometry (very cool thing, I cant work without this modifier).

I hope you fix this before 2.57 is out.

Date: 2011-03-22 18:58
Sender: Ton Roosendaal
You added two more reports, does it mean that this report is now obsolete?

Date: 2011-03-22 19:19
Sender: Mikhail Rachinskiy
No.
This bug report promotion issue when creating object on another layer.

Date: 2011-03-23 15:08
Sender: Brecht Van Lommel
Fix in svn, thanks for the report.

Attached Files:

Name	Date	Download

Shrinkwrap effect.blend	2011-03-19 21:14	Download
Shrinkwrap effect 2.blend	2011-03-20 17:42	Download

Changes:

Field	Old Value	Date	By

status_id	Open	2011-03-23 15:08	blendix
close_date	None	2011-03-23 15:08	blendix
Status	Investigate	2011-03-23 15:08	blendix
assigned_to	ton	2011-03-22 13:32	ton
File Added	15455: Shrinkwrap effect 2.blend	2011-03-20 17:42	alm
assigned_to	none	2011-03-20 15:57	ton
Status	New	2011-03-20 15:57	ton
File Added	15448: Shrinkwrap effect.blend	2011-03-19 21:14	alm