I cannot colour or texture My OBJ imports

themidget

When I import OBJ accessories created in Blender, I cannot add bitmap designs for colour or bump mapping.  With colour, an ornate purple and magenta design for example just came out an insipid lilac.  Do I have to prepare the surface somehow first?

sriesch

You may need to UVmap them first?

Here's one option: http://www.uvmapper.com/

themidget

sriesch said:

You may need to UVmap them first?

Here's one option: http://www.uvmapper.com/

Nice one - thanks.  I tried to learn UV mapping in Blender but found the instructions a little difficult so this is well worth having.  Thanks again.

MatCreator

Wont an unmapped object still accept procedural shaders???

FSMCDesigns

MatCreator said:

Wont an unmapped object still accept procedural shaders???

Yes, as long as there is no pattern associated with it. The pattern will be distorted if not UV mapp9

BradCarsten

UV mapping is quite easy in blender. 

go into edit mode on your main viewport and open up the UV editor in another viewport,

Imagine you were cutting up a paper model in order to lay it out flat on a surface. 

in edit mode start selecting all the edges where those seams will apear. Press Ctrl+e > Mark Seam.

Once you've marked all the seams, press A to select all and then press U > unwrap.

It will then unfold the entire model into the UV window.

In material editor, create a new material, and with the entire model still selected, (or the parts you want to assign the material to) click assign. 

then go into texture editor and create a new texture. Change type to "image or movie" Open the image, and you're done. 

 

themidget

bradrg said:

UV mapping is quite easy in blender. 

go into edit mode on your main viewport and open up the UV editor in another viewport,

Imagine you were cutting up a paper model in order to lay it out flat on a surface. 

in edit mode start selecting all the edges where those seams will apear. Press Ctrl+e > Mark Seam.

Once you've marked all the seams, press A to select all and then press U > unwrap.

It will then unfold the entire model into the UV window.

In material editor, create a new material, and with the entire model still selected, (or the parts you want to assign the material to) click assign. 

then go into texture editor and create a new texture. Change type to "image or movie" Open the image, and you're done. 

 

Thanks - I'll give it another go in case it's useful but I found UV Mapper easy to use and it was the solution I was looking for.

 

I wanted to post the results I had with and without UV Mapping on a pot I made in Blender but there doesn't seem to be a way to post images here if they are not already posted online.  Without UV mapping it seems to use colour from the pattern but as a single homogenous colour rather than a pattern.

 

themidget

OOps, - re my last comment, I see now that I can attach a file.  Here it is.