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In the default scene with freestyle enabled and external contour selected, I get this: enter image description here

If I then add a plane below the cube you get this: enter image description here

Then I enable shadowcatcher on the plane, and get this: enter image description here

As you can see, the plane affects the line calculation.

So then I move the plane to its own collection and use that collection to exclude the plane from the lineset calculation: enter image description here

And when I render now, I get this: enter image description here

So excluding the collection does remove the lines that the plane creates, however it does not allow all of the external contour lines for the cube.

The goal is to have the full contour lines for the cube, zero lines for the shadowcatcher plane, and the shadow sitting underneath - ideally without doing multiple renders and then a composite.

Does anyone know how to make this work?

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  • $\begingroup$ Maybe split into two separate view layers $\endgroup$ Commented May 2, 2022 at 11:02
  • $\begingroup$ Any reason you can't just use the Contour edge type instead? That accomplishes what you want in this simple scenario. $\endgroup$
    – Bloop
    Commented Jul 19, 2022 at 19:11
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    $\begingroup$ @Bloop Nah, contour edge gives too many lines, because in the actual scene there are a ton of objects. So all objects get their contours. Which isn't what I want. $\endgroup$
    – DrewTNBD
    Commented Jul 20, 2022 at 20:05

1 Answer 1

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Use the scene line art:

enter image description here

Set edge types to contour:

enter image description here

Hide ground plane:

enter image description here

Then bake line art:

enter image description here

Then unhide object and check that you have line art only on necessary objects.

enter image description here

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  • $\begingroup$ Unfortunately, even contour mode still gives too much detail to the actual line work. External contour is perfect because it truly draws just the outline around the whole collection, rather than each individual object and individual crease. $\endgroup$
    – DrewTNBD
    Commented May 2, 2022 at 9:34

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