Toon shader does not affect round edges

[n_maasdijk]

Hello everyone.

I have been using toon shader much as of lately.

Because for my work i have been making work-books (kinda like ikea for example) where its more visual then with text, so that our products can be made all over the globe without language barrier's.

It worked great, untill a big part of all of these books revolves around a white coated product wich before had multiple hard sharp edges, but now it has rounded edges. Wich makes it so that now the white products is placed at a white background without lines separating them...

Is there any way around this that anyone knows of?

Thanks already!

-NM

[wernienst]

You could assign different Material IDs to the object parts that should be separated by contours. Then create a multi-toon material with identical copies (do not use instances).

In the Edge Detection section of the Toon shaders, activate ID Difference and Shader Difference.

[n_maasdijk]

"You could assign different Material IDs to the object parts that should be separated by contours. Then create a multi-toon material with identical copies (do not use instances)."

Could you elaborate further on that? I dont really understand what you mean.

Thanks!

[wernienst]

For information about Multi/Subobject material, look here.

Selecting the polygons for the IDs is the more difficult part and depends on the geometry of the object.

In this case, I've used Select By Angle 5° and then Grow severel times.

Then I've created a Multi-Toon material where every sub-material has a different edge color. Thus I can see which ID needs more or less polygons assigned.

Finally, I changed all edge colors to black.

[n_maasdijk]

I really appreciate the effort you put in to helping me man!

But i am afraid i still dont really get it completely, my apologies i am mostly self taught and very new to the 3D visualization scene.

But i have succesfully set up an Multi/Sub-Object with the desired shaders. I have converted my object to a mesh select (as shown on the link you posted), but i cant seem to get the same window as you have.

the window i have.

Above are marked in red the rounded edges/corners wich fall away at the toon-render stage. (Now you have more of an idea of what im talking about).

Thanks again.

-NM

[wernienst · Accepted solution]

Ok, I see, you are dealing with Body Objects. I'm not an expert with this. For the following procedures I'm using a simple STEP file I created with Plasticity.

Convert the Body Object to an Editable Poly or add an EditPoly modifier (the Help page is misleading here).

The next steps depend on the width of the rounded corners relative to the planned toon contour lines. If the corners are wider, then continue. Go to Edge Subobject mode, select all edges and weld them by a very small value (0.005). Go to Polygon mode, select faces and assign material IDs, then the Multi-Material etc. as described above.

If the rounded corners are smaller, it's simplier, because the parts are already separated (at least in my STEP file). So you need 2 IDs only. Go to Element Subobject mode and select all elements except the corners. Assign material ID 2 to them.

And now the Multi-material.

As you can see, it doesn't work with this object, but it may work in other cases.

[n_maasdijk]

Wow, i might be a bit late. Was off for a few weeks. But you fixed the problem!