Toon contour thickness

[diego6S3FN]

Hi, I'm starting with Toon shader for a series of scenes I have to do, this shader is really extraordinary.

The problem I see is that the thickness of the contour doesn't scale with the perspective, as you can see in the image of the palm trees the first one looks good but as they get further away the detail is lost as the contour doesn't scale proportionally to the distance from camera.

However in the screenshot of the Toon Shader framed in red you can see that there are inputs to make the contour less thick with "Width scale".

I wonder if there is any possibility of plugging in a shader that has a distance to camera so that objects that are further away have a less thick contour.

Or maybe someone can think of another way to do it,

Thanks in advance.

Diego

[CiroCardoso3v]

You can connect a Facing Ratio node to the edge thickness.

[diego6S3FN]

Hi Ciro, thank you for your answer,

I have done some tests with the facing ratio but this gives a bit irregular result as it is getting angle information and it seems that what we need here is more a depth information like Z-depth or the one that can be used by the native Arnold fog, but I don't know how to get this information with the Arnold nodes.

Actually if I could transfer the information from Z-Fog to edge tickness I think it would work very well.

Is there a node or combination of nodes that gives this data?

Kind regards,

Diego

[lee_griggs · Accepted solution]

You could try the depth mask as used here.

[diego6S3FN]

This has worked perfectly! Thank you very much Lee, I have attached a screenshots in case it helps anyone, now the contour width is proportionate in the distance even it's a good way to create a bit of fog in toon scenes.

I had to play a bit with bias and gain to find the right gradient.

Really cool, thanks

[maxtarpini]

You can use also this one :

https://answers.arnoldrenderer.com/questions/11281/aitoon-width-scaling-depending-on-distance-from-c...

Setup is like this : AiStateFloat needs to be set to Rl