UV mapping a cardboard box

[stoneage]

@stoneage

One thing that I really want to know is how you to a good UV maping for your texture if you can give us an example like the one _Mo_ gave which by the way is yours I will be very happy

Thanks in advanced

http://www.yafaray.org/community/forum/ ... d444963973 Post #9

I thought I better start a new thread for this so as not to take STart's wip thread off topic.

I first modelled a template based on the broken open box, and saved the UV map 'project from view'. Then, so long as I don't change the distance between loops or add new loops the UV coordinates will hold however I manipulate the mesh. With the UV coordinates set you can edit and update the UV image 'in place'.

The next thing to do is fold up the model along the box edges.

With that done I used a lattice modifier to subtly distort the mesh. The lattice modifier is ideal for this as the deformation is non destructive and remains editable.

I guess this method is somewhat wasteful in terms of geometry, but it gives a very versatile end result as the model can be reused, and 'posed', in many different ways.

I think this is one of my favourites - 3D fog, depth of field and some colour correction -

[Samo]

Thank you Stoneage. Can you share a scene at least with one box. Thank you !!!

[stoneage]

Sure thing.

Here is the whole scene. If you want to add it to the Yafaray example files I am ok with that.

I originally rendered the scene from Blender 2.49, so I have quickly set it up to render from 2.57 as well, with a borrowed and adapted compositing node set up from sadaj(http://www.mediafire.com/?mkcttp5d3dtciz0). I also changed the lighting for the 2.57 render, so the two will not be identical, though again, not to make improvements, but rather to get it done quickly, so feel free to play with it.

Both .blend files plus textures are included in the .7zip(8 MB):-
http://dl.dropbox.com/u/1934813/Pan-F.7z
http://dl.dropbox.com/u/1934813/Pan-F_2.65.0.7z

The settings could do with some further refinement, but I really have to get on with some other work. If anyone wants to post up improvements please do

Blender 2.57 + compositing nodes

[STart]

thank you for sharing

[Samo]

Thanks for the scene

[pyrit]

good tut.
thy for the work.

[Samo]

Stoneage, can you please adapt this scene to Blender 2.65a, with color management enabled? thank you in advance.

[stoneage]

Sure thing, I'll take care of that this weekend. I have a couple of minor issues with it though. The hdr image I used for the environment lighting is LatLong and yafaray now provides only reflection but no illumination for sphere maps. Set to angular it does give illumination though.

The other problem is in 2.65.5 the Yafaray ui has lost the section to add and choose material and texture types. Hopefully it is a minor coding change.

material-01.jpg (26.69 KiB) Viewed 29144 times

material-02.jpg (27.35 KiB) Viewed 29144 times

texture-01.jpg (26.02 KiB) Viewed 29144 times

texture-02.jpg (26.95 KiB) Viewed 29144 times

The terminal errors:-

Traceback (most recent call last):
File "/home/organic/blender/build/bin/2.65/scripts/addons/yafaray/ui/properties_yaf_texture.py", line 80, in draw
row.template_list(idblock, "texture_slots", idblock, "active_texture_index", rows=2)
TypeError: UILayout.template_list(): error with argument 1, "listtype_name" - Function.listtype_name expected a string type, not Material

Traceback (most recent call last):
File "/home/organic/blender/build/bin/2.65/scripts/addons/yafaray/ui/properties_yaf_material.py", line 64, in draw
row.template_list(ob, "material_slots", ob, "active_material_index", rows=2)
TypeError: UILayout.template_list(): error with argument 1, "listtype_name" - Function.listtype_name expected a string type, not Object

[povmaniac]

I'll try to do something about it ..
But .. You could use the version 2.65a Official Release?

Greetings..

[stoneage]

I'll try to do something about it ..

Thanks, that would be great.

But .. You could use the version 2.65a Official Release?

Yes indeed, I'm rendering just now with 2.65.3 (I tested with 2.65.0 as well, but you know what these Blender users are like; someone's bound to load up an svn build sooner or later ).

Here's how it looks so far:-

I'll try to finish it over the weekend.

[povmaniac]

Ok..
'template_list' has change in the last commits.
Before in properties_yaf_material.py, line 64:
row.template_list(ob, "material_slots", ob, "active_material_index", rows=2)

Now:
row.template_list("MATERIAL_UL_matslots", "", ob, "material_slots", ob, "active_material_index", rows=2)

Same change in properties_yaf_texture.py, line 80:
row.template_list("TEXTURE_UL_texslots", "", idblock, "texture_slots", idblock, "active_texture_index", rows=2)

Warning!! This change is only for Blender versions belong 2.65.3!!

Make this changes, the exporter work fine.. atm!!
Greetings..

[Samo]

can you work with Blender official release please? thanks

[stoneage]

'template_list' has change in the last commits.
Before in properties_yaf_material.py, line 64:
row.template_list(ob, "material_slots", ob, "active_material_index", rows=2)

Now:
row.template_list("MATERIAL_UL_matslots", "", ob, "material_slots", ob, "active_material_index", rows=2)

Same change in properties_yaf_texture.py, line 80:
row.template_list("TEXTURE_UL_texslots", "", idblock, "texture_slots", idblock, "active_texture_index", rows=2)

Thanks
I find that works for 2.65.5, but there is a problem with image textures:-

Traceback (most recent call last):
File "/home/organic/blender/build/bin/2.65/scripts/addons/yafaray/io/yaf_export.py", line 319, in update
self.exportScene()
File "/home/organic/blender/build/bin/2.65/scripts/addons/yafaray/io/yaf_export.py", line 69, in exportScene
self.exportTexture(obj)
File "/home/organic/blender/build/bin/2.65/scripts/addons/yafaray/io/yaf_export.py", line 98, in exportTexture
self.yaf_texture.writeTexture(self.scene, tex.texture)
File "/home/organic/blender/build/bin/2.65/scripts/addons/yafaray/io/yaf_texture.py", line 314, in writeTexture
yi.paramsSetBool("use_alpha", tex.use_alpha)
AttributeError: 'ImageTexture' object has no attribute 'use_alpha'

can you work with Blender official release please? thanks

ok, will do.


.

[condar]

Ok..
'template_list' has change in the last commits.
Before in properties_yaf_material.py, line 64:
row.template_list(ob, "material_slots", ob, "active_material_index", rows=2)

Now:
row.template_list("MATERIAL_UL_matslots", "", ob, "material_slots", ob, "active_material_index", rows=2)

Same change in properties_yaf_texture.py, line 80:
row.template_list("TEXTURE_UL_texslots", "", idblock, "texture_slots", idblock, "active_texture_index", rows=2)

Warning!! This change is only for Blender versions belong 2.65.3!!

Make this changes, the exporter work fine.. atm!!
Greetings..

works perfect!... thanks. Now this should go to the git repo

[condar]

I should add that Image properties don't work anymore with the exporter... I still don't know which revision made the changes but my previous try was with r53470 and up

Right now adding a texture to the scene makes Yafaray stop and that make fail the preview for any material with textures too

Code: Select all

INFO: Exporter: Creating Texture: 'Texture' type IMAGE: .../textures/Ciemny dab.jpg
INFO: Interface: Deleting scene...
INFO: Interface: Deleting environment...
INFO: Interface: Done.


AttributeError: 'ImageTexture' object has no attribute 'use_alpha'

location: <unknown location>:-1

location: <unknown location>:-1
Traceback (most recent call last):
  File ".../blender26X_svn/2.65/scripts/addons/yafaray/io/yaf_export.py", line 319, in update
    self.exportScene()
  File ".../blender26X_svn/2.65/scripts/addons/yafaray/io/yaf_export.py", line 69, in exportScene
    self.exportTexture(obj)
  File ".../blender26X_svn/2.65/scripts/addons/yafaray/io/yaf_export.py", line 98, in exportTexture
    self.yaf_texture.writeTexture(self.scene, tex.texture)
  File ".../blender26X_svn/2.65/scripts/addons/yafaray/io/yaf_texture.py", line 314, in writeTexture
    yi.paramsSetBool("use_alpha", tex.use_alpha)
AttributeError: 'ImageTexture' object has no attribute 'use_alpha'

location: <unknown location>:-1

location: <unknown location>:-1

ERROR: Environment: Specify a Camera!!
INFO: Interface: Cleaning environment...
INFO: Interface: Deleteing scene...
INFO: Interface: Clearing film and parameter maps scene...