Ice cube gradient falloff issue

[batman911]

Hello,

I'm trying to recreate the ice cubes in this picture. What I want to do is to create one clear ice material for the outer skin, then a separate material for the frosty part in the middle of the cube, and then do a gradient transition from one material to the other. I'm not quite sure how to go about this though? (Still new Octane user

Thanks for any help in advance.

[promity]

If this is not for animation, you can divide the model of ice cubes into upper and lower parts (boolean by the surface of the water) and assign each material its own properties.

[mikefrisk]

If this is not for animation, you can divide the model of ice cubes into upper and lower parts (boolean by the surface of the water) and assign each material its own properties.

I think he means the cube itself, the outside of the ice cube is more transparent and the core of the cube is translucent. I'm not sure how to go about this either, probably have to do something with VDB.

[frankmci]

If this is not for animation, you can divide the model of ice cubes into upper and lower parts (boolean by the surface of the water) and assign each material its own properties.

I think he means the cube itself, the outside of the ice cube is more transparent and the core of the cube is translucent. I'm not sure how to go about this either, probably have to do something with VDB.

You can probably get a pretty good look with a simple particle system and instanced, 2D image cards for the cube interior. It's old-school, but probably faster and easier than mucking around with VDBs.

[CANDITO]

You could try to put the translucent cube into the tranparent one and
use a falloff to control the transparency on the borders (use rounded
edges with a fair amount on the translucent cube for the falloff to work).

[mikefrisk]

You could try to put the translucent cube into the tranparent one and
use a falloff to control the transparency on the borders (use rounded
edges with a fair amount on the translucent cube for the falloff to work).

I tried that but I couldn't get them to blend naturally.

This might be one of those things you have to do in post with multiple render layers.