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

[Vaib]

getbbox will solve the issue at hand. Rooms/scenes are mostly right
rectangular prism; and also they are normally kept aligned with principal
axes, only the sky (if with sun) is rotated to change the North. I guess,
to rotate the sky instead of the scene must be preferred for modeling
architectural scenes in Radiance.

Further, just out of curiosity: getinfo -d foo.oct gives [Xmin, Ymin, Zmin,
Size] of the bounding cube (I guess cuboid too?). I couldn't figure what
does Size mean? Is it Xmax or Y/Zmax?

Thank you for your time!

Best regards,
Vaib




On 7 February 2014 18:47, Greg Ward <gregoryjward at gmail.com> wrote:

> 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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>
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