[Radiance-general] How to parse room dimensions from .rad model ?

[Greg Ward]

Yes, let's keep this on the general mailing list.  The dev list is primarily for development/debugging issues.

The getbbox command will give you a tight box (right rectangular prism) on the entire scene, whereas oconv will report an enclosing cube.  However, this won't help you much if your space is non-rectangular or not axis-aligned.

A general tool for extracting the walls from a room is technically the 3-D convex hull problem.  There are programs out there to compute this, but I haven't played with them.

Best,
-Greg

> From: Christopher Rush <Christopher.Rush at arup.com>
> Date: February 7, 2014 9:41:21 AM PST
> 
> Crossing over to the general list…
>  
> If you can create an octree from your model, try the command and option getinfo –d
>  
> That will return the dimensional information for your full scene though, so if there are objects included outside of your area of interest, it becomes more tricky.
>  
>  
> From: Vaib [mailto:vaibhavjain.co at gmail.com] 
> Sent: Friday, February 07, 2014 12:12 PM
> To: radiance-dev
> Subject: [Radiance-dev] How to parse room dimensions from .rad model ?
>  
> Hello everyone, 
>  
> It is a kind of weird question but thought to hear your views.
>  
> Let's say, someone gave me a .rad file which is a model of a rectangle room. This model has many polygons for surfaces such as walls, windows, luminaire, furniture etc. 
>  
> How shall I develop a method/function that can parse this .rad file and return me back the room dimensions. I have no additional information, like walls' name variable etc.
>  
> I want to make a simple java method for that. I am not using any CAD API.
>  
> Is it possible? Please don't bash me for my stupid question.. :P
>  
> Best regards,
> Vaib
> 
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