topic Re: GDL cyclorama shading question in Visualization

GDL cyclorama shading question

David Collins — Thu, 11 May 2023 11:49:21 GMT

I've created a background cyclorama for a VR panorama using GDL, as in the GDL cookbook.

Here's my question: I can turn the shadow casting off in GDL, but is there any way I can reduce the basic shading effect on the cyclorama cylinder? It still shows light and dark depending on the direction of the sun, which pretty much gives the whole show away.

Re: GDL cyclorama shading question

Dwight — Thu, 30 Nov 2006 07:06:32 GMT

Shame on you.
You have had my book so long you are forgetting.

Page 154

Switch material reflectance to "Constant"

Re: GDL cyclorama shading question

Dwight — Thu, 30 Nov 2006 07:09:29 GMT

Oh shame on me.
The GDL Cyclorama calls a picture.
Can't make THAT "constant."
To get the constant thing to work, you must apply the material as a wall surface to a cylindric wall.

Re: GDL cyclorama shading question

David Collins — Fri, 01 Dec 2006 06:21:58 GMT

Dwight wrote:
Shame on you.
You have had my book so long you are forgetting.

Actually, its worse than that. The book is great, but I'm not that keen on Lightworks. I'm using the old ArchiCAD rendering engine as a fast alpha channel tester. I'll do the serious rendering in Artlantis, which is where I really should be looking for an answer to the shading problem.

Re: GDL cyclorama shading question

Dwight — Fri, 01 Dec 2006 06:38:16 GMT

Oh.
Never mind.

Re: GDL cyclorama shading question

Andy Thomson — Sat, 02 Dec 2006 14:28:42 GMT

Has anyone tried the cyclorama built right into the lightworks archives?? Just noticed them there yesterday, and wondered how they called images...

Re: GDL cyclorama shading question

Dwight — Sat, 02 Dec 2006 17:40:18 GMT

Scenery elements cannot be used in Archicad.
Yet another thing waiting for a future implementation.