Blender Foundation: Blender 2.x BF release: Detail: 32617 hole on text

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[#32617] hole on text

Date:
2012-09-21 13:43 Priority:
3

State:
Closed

Submitted by:
di mistic (budip) Assigned to:
Nobody (None)

Category:
Rendering Status:
Closed

Relates to: Duplicates:

Patches:

Summary:
hole on text

Detailed description

version 2.63 (sub 19), revision b'50707'. b'Release'
build date: b'2012-09-18', b'06:15:28'
platform: b'Windows:32bit'

use blender render
hole on text see image -- > http://www.pasteall.org/pic/show.php?id=37974

1. open my file(attach here)
2. on frame 32 press render
3. you will see hole on text

Followup

Message

Date: 2012-09-21 16:30
Sender: Sebastian Röthlisberger
confirmed on osx.
strange, if you set Extrude to 0.164 (inst. 0.163) it renders ok...

Date: 2012-09-21 16:59
Sender: Sebastian Röthlisberger
btw, is it normal for Textobject -> Convert to Mesh, that generated Mesh has Duplicated Faces?

Date: 2012-09-21 17:20
Sender: Ejner Fergo
Confirmed on Linux. Only in BI, works in Cycles.

@Sebastian
Yes also tried changing Extrude but the error just show up on other frames instead.
I don't get duplicate faces after converting to mesh, but the vertices are not connected (remove doubles cut the vertex count to half).

Date: 2012-09-25 01:36
Sender: Campbell Barton
The problem is scan-fill creates a zero area face (or close enough to zero to cause glitches).

Date: 2012-09-25 11:42
Sender: Sergey Sharybin
@Campbell, also thought so. Not sure why converting text to mesh solves the issue. Also 2.56 worked fine with this file..

Date: 2012-10-19 19:15
Sender: Ton Roosendaal
This is something that should work fine always... should check commits in scanfill. It seems as if it's filling the transformed displist now, not the original one.
(remove scale also solves error)

Date: 2012-10-23 17:34
Sender: ronan ducluzeau
A workaround can be to add a remesh modifier.

Date: 2012-10-24 11:33
Sender: Ton Roosendaal
I pinned the error down; it was caused by a very bad normal being calculated on a tiny face. The code checks for small faces with FLT_EPSILON, but that value is too small. In other parts of the code we use a 10x larger value of FLT_EPSILON10 instead.

Fix goes to svn now.

Attached Files:

Name	Date	Download

text-Hole.png	2012-09-21 13:43	Download
text Hole.blend	2012-09-21 13:43	Download

Changes:

Field	Old Value	Date	By

status_id	Open	2012-10-24 11:33	ton
close_date	None	2012-10-24 11:33	ton
Status	New	2012-10-24 11:33	ton
File Added	22114: text Hole.blend	2012-09-21 13:43	budip
File Added	22115: text-Hole.png	2012-09-21 13:43	budip