merging an object from a scene with a different unit scale system

[Illya Gamza]

Hello everyone,

 

I have a problem merging the files from a scenes with a different unit scale system. When I merge the objects (my system units are inches ) from the other scene( system units are mm)the scale of geometry is ok, but UVW mapping is not correct. I am pretty sure it is because of the uvw mapping which is in the Real world map scale. But modifier stack is collapsed and I can't fix it so quickly, at the same time there are so many objects ;(

 

What are you doing folks in this situation?

[mjklm]

Try using the xform modifier. You may either apply it from the modifier list, or you can go to the "Utilities" and choose "Reset XFrom > Reset selected". At the end collapse whole stack to edit poly, that should help.

[siddharthkolte]

If all your materials have the UVW mapping problem then just select all of the objects that need the change and run a script like this.

(

sel = getCurrentSelection()

for s in sel do

(

if not classof s.material == MultiMaterial then

(

mat = s.material

if classof mat.texmap_diffuse == BitmapTexture then

(

if mat.texmap_diffuse.coords.realWorldScale == true then

(

mat.texmap_diffuse.coords.U_Tiling = mat.texmap_diffuse.coords.U_Tiling / 25.4 -- As 1 inch is 25.4 mm

mat.texmap_diffuse.coords.V_Tiling = mat.texmap_diffuse.coords.V_Tiling / 25.4 -- As 1 inch is 25.4 mm

)

)

)else if classof s.material == MultiMaterial then

(

submat = s.material

for m=1 to submat.materialList.count do

(

mat = submat.materialList[m]

if classof mat.texmap_diffuse == BitmapTexture then

(

if mat.texmap_diffuse.coords.realWorldScale == true then

(

mat.texmap_diffuse.coords.U_Tiling = mat.texmap_diffuse.coords.U_Tiling / 25.4 -- As 1 inch is 25.4 mm

mat.texmap_diffuse.coords.V_Tiling = mat.texmap_diffuse.coords.V_Tiling / 25.4 -- As 1 inch is 25.4 mm

)

)

)

)

)

)

 

I am a bit unsure if you need to divide 25.4 to the existing Tiling or multiply (if it is multiply just change "/" to "*"

Edited April 23, 2015 by siddharthkolte

[Josef Wienerroither]

Just released 3ds Max 2016 has a new checkbox in the merge dialog to automatically scale incoming objects to system unit scale

 

[Illya Gamza]

Siddharth Kolte,

 

Thank you so much for the script. It worked perfectly for me.

 

Regards

 

Illya

[Illya Gamza]

Siddharth Kolte,

 

Thank you so much for the script. It worked perfectly for me.

 

Regards

 

Illya