README file to run Radiance demo for COMBINE project
demostration.

All necessary file to run Radiance model are in directory:

rad/

and these are:

README        external.oct  lum.pic       room_int.mat  view.vp
desk.rad      illum.pic     room_ext.mat  room_int.rad
ext_pic       internal.oct  room_ext.rad  sky_oc.rad

INTERACTIVE CALCULATION

To display interactive calculation of space luminance distributions:

           rview -vf view.vp -av .1 .1 .1 -ab 2 internal.oct

this will bring new window on the screen (^r to redraw).  Add
ib to command line for greyscale.

At any time it is possible to stop calculatio:

                         ^C 
what gives command line, and then

                          quit
will terminate program or

                          e 2
will adjust exposure and

                      write lum.pic

will write Radiance picture for later analysis.

The same goes for calculation of the space illuminance distribution:

          rview -i -vf view.vp -av .1 .1 .1 -ab 2 internal.oct

and you must adjust exposure by:

                         ^C
                         e 1

in order to see calculation. After calculation is done:

                        write illum.pic

will write Radiance picture for later analysis.

INTERACTIVE DAYLIGHTING ANALYSIS

Two necessary pictures have already been created. These are lum.pic
and illum.pic. So first part of interactive calculation may be omited.

To analyse visual comfort:

                       ximage lum.pic

this will bring new window on the screen.

To display values of luminance:

                      clic left mouse buton and draw rectangle, release, 
                                       hit "L" key

To display luminanace countours:

                      position arrow in desired place
                              hit "i" key

To redraw picture:

                            ^R

To terminate:

                            q

The same way to follow for displaying illuminance values:

                               ximage illum.pic.



THEN 

cd ext_pic

xv picture1.rst
xv picture2.rst

