topic Re: Strange shadow casting in Visualization

Strange shadow casting

Anonymous — Thu, 11 May 2023 13:09:36 GMT

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

Re: Strange shadow casting

Anonymous — Tue, 26 Sep 2006 20:59:06 GMT

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.

Re: Strange shadow casting

Anonymous — Tue, 26 Sep 2006 21:17:09 GMT

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?

Re: Strange shadow casting

Anonymous — Tue, 26 Sep 2006 21:24:14 GMT

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.

Re: Strange shadow casting

Erika Epstein — Tue, 26 Sep 2006 22:25:16 GMT

By any chance do you have some lights turned on ?

Aurora Borealis?

One for the Dwightster where ever he is.

Re: Strange shadow casting

Djordje — Wed, 27 Sep 2006 04:29:02 GMT

Glass reflection, methinks.

Re: Strange shadow casting

Anonymous — Thu, 12 Oct 2006 16:18:17 GMT

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)

Re: Strange shadow casting

Thomas Holm — Thu, 12 Oct 2006 16:27:15 GMT

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

Re: Strange shadow casting

Dwight — Thu, 12 Oct 2006 17:02:18 GMT

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.

Re: Strange shadow casting

Anonymous — Thu, 12 Oct 2006 17:13:36 GMT

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)

Re: Strange shadow casting

Anonymous — Thu, 12 Oct 2006 17:26:20 GMT

Changing the “Shadow casting” in the Photo Rendering Settings from “by lamp settings” to "Hard" seems to eliminate the problem.

PS Strangely if I uncheck the “Transparency” in the Effects, the problem is also eliminated but so are all the cast shadows!

Re: Strange shadow casting

Dwight — Thu, 12 Oct 2006 17:27:43 GMT

try the realistic sun shader

Re: Strange shadow casting

Anonymous — Thu, 12 Oct 2006 18:00:47 GMT

Dwight wrote:
try the realistic sun shader

a little pixelation but much better, incredibly slow though!
This is the first time I notice the Realistic Sun option!

Re: Strange shadow casting

Dwight — Thu, 12 Oct 2006 18:05:07 GMT

The new realistic sun shader IS mentioned in the Archicad 10 supplement to my book…

I assumed that an advanced user like yourself would get your copy from GSCNE, but if not, we can supply you directly.

Re: Strange shadow casting

Anonymous — Thu, 12 Oct 2006 18:13:10 GMT

I think I might of downloaded something at the time (I only upgraded to 10 recently so it wouldn't have been very pressing then!) I didn’t receive anything in hard copy if that’s what you mean though. So in any case yes, if you could send me the supplement that would be great.