imagetexture/projection mapping alpha question Tweet

[justinanixon]

Hello!

I have a question about using the imagetexture and alpha.

here is what I'm trying to do:

I want to put a drawn 2D character in the a 3D environment, using octane as my renderer and have the texture be effected by octane lights.

I know how to do projection in C4D and the alpha works, getting rid of the polygon I have it projected on. The only issue is that it isn't effected by the lights, which I want. I've attached a picture that utilizes the c4d projection mapping - how can I achieve this with octane so the lights effect the drawing?

I hope this is clear enough, let me know if I can give any more information.


Thanks!

-Justin

[bepeg4d]

Hi justinanixon,
not sure to have correctly understood the question...
Are you rendering with default DirectLight AO kernel?
Have you tried to switch to Direct Light Diffuse or Path Tracing?
ciao beppe

[justinanixon]

Hey thanks for the response. I am actually rendering with diffuse. The problem I am having is not getting my texture image to respond to lighting.

I want to put a 2D character on a 3D object (or just a polygon) and have the the rest of the polygon disappear. When I do this with projecting mapping, everything works but the character isnt affected by the lights I have in the scene. Trying to figure out if it's something I can do with octane materials, but I can't seem to get the alpha to work when using octane materials.

I hope this helps!

[bepeg4d]

Hi justinanixon,
please, look at this scene prepared by aoktar about imagetexture and alpha in Octane:

ImageTextureExamples.zip

(693.38 KiB) Downloaded 188 times

You can download all the example scene files in any c4dOctane release post, here is the direct link:
https://render.otoy.com/plugindownloads ... scenes.rar
ciao beppe

[justinanixon]

This is exactly what I needed to see! Thanks so much!