Solution please.....!!!

[nidhi singhania]

Hello,

I currently am working on 3ds max 2008, where in i created a pen holder using a tube...

Now i have this jpeg that i want to apply for the material on the object, but i want the black portion of it to be transparent where as the solid portion of the image to b seen as solid material.

Can someone help me with this!!!!

[Cad64]

You need an opacity map. An opacity map is a greyscale image where black is transparent, white is opaque and shades of grey are seen as semi-transparent depending on how dark or light they are.

 

The first image below is your Diffuse map and the second image is the Opacity map. It goes in the 'Opacity' map slot, as shown in the third image below. The fourth image is a rendering of a flat plane with the materials applied.

[Raudel Solis]

take it into photoshop and make a opacity map.

 

like this one...

the white specifies visible objects the black specifies the transparant portion

 

 

"note its not just about the opacity map... make sure the mapping is correct on the pen holder or else it will be applied all over the object..

to fix it you can either detach the top polygons and apply the material to the new object after applying a UVW map or you can select the polygons individually and then apply the material.

 

 

[nidhi singhania]

Well, how can i convert it into an opacity map!!!! I mean the black and white jpg

[Cad64]

Do you have Photoshop?

[nidhi singhania]

Yes, Photoshop CS4. I went to swatches -> adjustments and changed its contrast and brightness...

Will that do!

[Cad64]

Ok, here's a quick Photoshop tutorial.

 

1. Open the image in Photoshop and save it under a different name

 

2. Select the 'Magic Wand' tool

Set the tolerance down around 15

Make sure 'Contiguous' is unchecked

 

3. Click inside one of the black circles to select all the black area you want to be transparent

 

4. Hold down Shift & Ctrl and hit "I" to invert the selection

 

5. Fill the selected area with White

You should now have a completely white background with black circles

 

6. Hit Ctrl + "D" to deselct

 

7. Go to Filter > Blur > Gausian Blur

Set the Radius to 1.0 pixels and hit Ok. This will soften the transition from white to black around the edges of the circles

 

8. Save

[nidhi singhania]

Yepieee.......

I got it...

Now 1 more problem croped up:oops:

Till the time i was applying the material to a tube or plane, it was ok, but then i made a S kind of shape via line tool n then extruded and shelled it.Then when i tried to attach the same material to this newly created object, some how , my entire object vanished.I tried to see it in render as well, but there too it is coming as blank, but in viewports the selection frame of the object is visible...

Now whats the catch behind this!!!!

[Cad64]

It sounds like your object is inside out. Use polygon selection mode, window select the entire object and click the Flip button.

[nidhi singhania]

Well, I dont think so, as soon as I fliped the object its turned into black and same invisible thing happened,about which I have said earlier.

[Cad64]

Ok, I guess you probably just need to set up the UVW mapping coordinates on the object then. The mapping coordinates define how the texture wraps around the model. Search Google. There are literally hundreds of tutorials covering UVW mapping.

[nidhi singhania]

I tried, but it somehow is not working for me.

[Cad64]

Can you upload your file with the "S" shaped object so I can take a look?

[nidhi singhania]

Hey, thanks..

I got it now...