rotate in rview

radiance-general
1

Hi
Stupid question, I can rotate in rview e.g r 45, but how do I specify rotate
about a certain axis and also how do I say to elevate by a certain angle? Do I
have to change the viewpoint file altogether or can this be done in rview?

Thanks

Tarik

···

--
Tarik Rahman
PhD student, Institue of Perception, Action and Behaviour
School of Informatics
University of Edinburgh

2

Tarik.

how do I say to elevate by a certain angle?

Use the 'pivot angle [elev]' command, e.g. 'p 0 30'
to elevate 30 deg 'up' from the pivot point.
Negative angle to go 'down'.

-John

···

-----------------------------------------------
Dr. John Mardaljevic
Senior Research Fellow
Institute of Energy and Sustainable Development
De Montfort University
The Gateway
Leicester
LE1 9BH, UK
+44 (0) 116 257 7972
+44 (0) 116 257 7981 (fax)

[email protected]
http://www.iesd.dmu.ac.uk/~jm

3

Hi Tarik,

The pivot ("p") command in rview/rvu will rotate about a chosen point (i.e., the axis is the up vector through the selected point). Quoting the rview man page:

        pivot angle [ elev [ mag [ x y z ] ] ]
                  Similar to the "move" command, but pivots the view about a
                  selected point. The angle is measured in degrees around the
                  view up vector using the right hand rule. The optional elev
                  is the elevation in degrees from the pivot point; positive
                  raises the view point to look downward and negative lowers
                  the view point to look upward.

The first argument is the angle (clockwise about point in degrees), the second is the elevation change, the third is the zoom factor, and 4-7 specify the point if you prefer to enter it manually rather than pick it from the current view.

You do have the man pages, I hope. If not, they can be found online at the LBNL website:

  http://radsite.lbl.gov/radiance/man_html/whatis.html

-Greg

···

From: Tarik Rahman <[email protected]>
Date: September 8, 2004 7:08:51 AM PDT

Hi
Stupid question, I can rotate in rview e.g r 45, but how do I specify rotate
about a certain axis and also how do I say to elevate by a certain angle? Do I
have to change the viewpoint file altogether or can this be done in rview?

Thanks

Tarik
--
Tarik Rahman
PhD student, Institue of Perception, Action and Behaviour
School of Informatics
University of Edinburgh