Transparent map
5 messages in this thread
What is the way to place a texture map on an object, and have the black part of
the map become transparent? For example, place a texture map of a spider web
on a box, and when rendered, have ONLY the web visible and not the box as it
moves through other objects. The web travels through a simi-transparent tube.
Can this be done? Thanks.
-James Franssen
Use an opacity map for this. Create the opacity map from your texture direct
of convert to grayscale in a paint program like photoshop.
>> Use an opacity map for this. <<
Right on the nose. I could not remember the word "opacity" 🙂 I appreciate
your quick replies, by the way, you're quite helpful every time!
-James Franssen
If I understand what you are trying to do, you could
1) either make a black and white opacity map by magic wand selecting
(in photoshop or photostyler etc. ) the black areas of the web map, inverting
the selection so the web is selected and filling the web with white
and saving as a map to be used in the opacity slot.
2)create an alpha layer by selecting the web as above,using the same
map of the web with alpha layer as an opacity map while using alpha not
rgb in the opacity map dialog
Ed
Hi James,
Opacity maps are the way to go, as mentioned by the other members up here.
There is a document about opacity map concepts relating to building simple
trees that might help you in your spider web animation. It's in the 3D Studio
library, called 3DTREE.ZIP.
I hope this helps,
Bob