[Sculpting]Optimal Mapping doesn't work.

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Old 04 April 2013   #1
[Sculpting]Optimal Mapping doesn't work.

Hi again,
Recently I've started playing with sculpting in Cinema 4D. Yesterday I've made an object and I noticed that without any clear reason it won't bake with Optimal Mapping turned on. I just hit Bake and nothing happens. As I remember optimal mapping generates UV maps, and without UV Mapping I can't move any further. Could you tell me why it isn't working properly?
Thanks.

Some screenshots:
This is how the object should look like: http://screenshooter.net/3973842/hcheltg
Those are baking settings: http://screenshooter.net/3973842/euovkaq
And this is how the object looks like after baking: http://screenshooter.net/3973842/gkyeofq
Generated textures: http://screenshooter.net/2042074/vawvlwa

Last edited by Winged : 04 April 2013 at 02:14 PM.
 
Old 04 April 2013   #2
Not sure why this is happenning but at first glance I notice that optimal mapping is actually turned off in your screenshot.

It might be more prudent to fix your UVs prior to sculpting (though the baking command should work as expected).
 
Old 04 April 2013   #3
Optimal Mapping is turned off (on screenshot) because as I said before, when it's switched on cubic mode it just won't be baked.
 
Old 04 April 2013   #4
did you use polygonal modelling tools on your base mesh before you used it for
sculpting ? it looks pretty much like there is no valid uvw data on your object,
so when you turn the remapping (optimal mapping) off c4d uses the existing
uvw data which cause the messy output.

the reason why optimal mapping fails could be that you created a non regular
mesh with polygonal modelling operations - hidden polygons, irregular polygons
and so on - on which the optimal mapping algorithm will fail.
 
Old 04 April 2013   #5
Originally Posted by littledevil: did you use polygonal modelling tools on your base mesh before you used it for sculpting?

Yeah, I used Knife to cut faces into squares.

Originally Posted by littledevil: the reason why optimal mapping fails could be that you created a non regular
mesh with polygonal modelling operations - hidden polygons, irregular polygons
and so on - on which the optimal mapping algorithm will fail.


You may be right. Even after I've deleted Sculpting tag and made a new one Cinema still won't bake this object. Base mesh doesn't look incorrect at all, though: http://screenshooter.net/3973842/gmvxnlw

Whatever, it will be faster if I create this object again (it took me about 30 minutes to make it, so it's not a big deal).

Anyway, Thanks for replies guys, love you
 
Old 04 April 2013   #6
check your console, there might be some errors due to bad or degenerated polys. Have a look here: http://forums.cgsociety.org/showthr...ght=degenerated
hope this helps

Cheers
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Old 04 April 2013   #7
Nope, no degenerated faces. I used Optimize and GoeCheck even several times and it still won't do the thing.

Link to a project is sbd would like to solve the problem inside out: http://www.speedyshare.com/vnM8y/project.c4d
 
Old 04 April 2013   #8
you have 3 groups of isolated vertices, far away from the main geometry, maybe that's the problem ?

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Old 04 April 2013   #9
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