Strange shadow casting

[Anonymous]

Does anyone know what causes this strange shadow (see image)

[Anonymous]

Is the roof made with the mesh tool? Perhaps there is an a problem with it that is preventing it from modeling properly (like a self-crossing edge). Check to see if it is solid in section.

[Anonymous]

No the roof is done with the roof tool; there is some slab (for soffit and fascia) that overlaps with the roof, could overlapping cause this maybe?

[Anonymous]

It could be the overlapping. Elements that overlap cancel each other (creating apparent voids) in 3D so it would make sense. I'm always pretty fussy about having no overlaps so I haven't run into it myself.

[Erika Epstein]

By any chance do you have some lights turned on ?

Aurora Borealis?

One for the Dwightster where ever he is.

[Djordje]

Glass reflection, methinks.

[Anonymous]

Different project, same problem. I’m using AC 10 default template settings for the materials, can’t always reproduce the problem so not sure when it happens. Anyone else encounter something like this

(please no comments about the design!! hopefully we'll find a way to convince them to change things)

[Thomas Holm]

Hassanen wrote:
(please no comments about the design!! hopefully we'll find a way to convince them to change things)

A way tomake it more interesting could be to go the other way and create a roof that matches the shadow

[Dwight]

Of the light sources in the scene, are any of the shadow resolutions= 0.

You see boxy shadows when shadow resolution is lower than rendered pixel resolution.

[Anonymous]

Dwight wrote:
Of the light sources in the scene, are any of the shadow resolutions= 0.

I'm not using any extra light source, just built in Sun ( at 100 in the photorendering settings & Ambient @ 100)