I want to validate a sunpatch study for an existing office space. But my renders don't show shadows correctly. I use Sketchup export with a rif file set to QUALITY=high and other settings set to MEDIUM to rapidly show direct sunlight on workplanes. The modeled space has the correct window openings and surface reflectances. Even when I adjust exposure interactively in X window, I don't see the correct sunpatch/shadows I expect for the location/time sky model (+i).
my render settings are as follows:
< Scene_1.oct
rvu -vu 0 0 1 -vf views/Scene_1.vf -ps 1 -pt .04 -dp 2048 -ar 105 -ms 0.24 -ds .1 -dj .65 -dt .05 -dc .75 -dr 3 -sj 1 -st .01 -ab 3 -aa .1 -ad 1536 -as 768 -av 8 8 8 -lr 12 -lw .0005 -R Scene_1.rif -o x11 -pe -4 Scene_1.oct>>
Any help there would be appreciated\\\
regards
Steve
···
_________________________________________________________________
Hello Steve,
A few more details are needed to help with your problem, such as:
1) The exact location of your building (longitude, latitude, time zone, orientation)
2) The time of day/year you are trying to recreate
3) The options you are currently using for gensky, assuming that's what you are using
-Greg
···
From: steve michel <[email protected]>
Date: January 19, 2008 5:33:27 AM PST
I want to validate a sunpatch study for an existing office space. But my renders don't show shadows correctly. I use Sketchup export with a rif file set to QUALITY=high and other settings set to MEDIUM to rapidly show direct sunlight on workplanes. The modeled space has the correct window openings and surface reflectances. Even when I adjust exposure interactively in X window, I don't see the correct sunpatch/shadows I expect for the location/time sky model (+i).
my render settings are as follows:
< Scene_1.oct
rvu -vu 0 0 1 -vf views/Scene_1.vf -ps 1 -pt .04 -dp 2048 -ar 105 -ms 0.24 -ds .1 -dj .65 -dt .05 -dc .75 -dr 3 -sj 1 -st .01 -ab 3 -aa .1 -ad 1536 -as 768 -av 8 8 8 -lr 12 -lw .0005 -R Scene_1.rif -o x11 -pe -4 Scene_1.oct>>
Any help there would be appreciated\\\
regards
Steve
Even when I adjust exposure interactively in X window,
I don't see the correct sunpatch/shadows I expect for
the location/time sky model (+i).
As Greg already pointed out check your location options.
The default location in Sketchup is Boulder/CO.
Also Sketchup assumes that your North direction is at the top
of the screen if you're in a plan view (+y if +z is height).
The conversion of Sketchup settings to gensky parameters
works on Macs rather well. On Windows the locations data file
is named differently which I haven't taken care of yet.
my render settings are as follows:
< Scene_1.oct
rvu -vu 0 0 1 -vf views/Scene_1.vf -ps 1 -pt .04 -dp 2048 -ar 105 -ms 0.24 -ds .1 -dj .65 -dt .05 -dc .75 -dr 3 -sj 1 -st .01 -ab 3 -aa .1 -ad 1536 -as 768 -av 8 8 8 -lr 12 -lw .0005 -R Scene_1.rif -o x11 -pe -4 Scene_1.oct
You can reduce the QUALITY setting in the .rif file to increase
the speed of the preview image. You can increase the 'ab' setting
separately ('render=' option in the rif file) if the settings
rad would create are too low.
Regards,
Thomas
···
On 19 Jan 2008, at 13:33, steve michel wrote:
Mark this almost solved..
Well I am using Sketchup export with SU2RAD. Initially, I was trying to view the sunpatchs on the far wall and floorplan with viewer's back to the window. When I rendered with the view towards the window opening (and gensky with +s sunny sky) I couldn't 'see' the sun patch. But when I checked with sketchup, I could see where a sunpatch should be, but it didn't appear in the render. To make sure ,I used sketchup shadow with time and location that shows a sunpatch clearly. Time is set 07:49am EST in sketchup; after export the generated sky file shows:
!gensky 10 31 +02:49 -a 45.52 -o 73.57 -m 75.0 +s -g 0.2 -t 1.7| xform -rz -0.0
obviously not what I wanted..So it renders correctlafter I manualy set the time to 07:49....could it be the exporter causing the 5hr difference???
···
----------------------------------------
From: [email protected]
Subject: Re: [Radiance-general]radiance daylight study
Date: Sat, 19 Jan 2008 07:48:49 -0800
To: [email protected]
Hello Steve,
A few more details are needed to help with your problem, such as:
1) The exact location of your building (longitude, latitude, time
zone, orientation)
2) The time of day/year you are trying to recreate
3) The options you are currently using for gensky, assuming that's
what you are using
-Greg
From: steve michel
Date: January 19, 2008 5:33:27 AM PST
I want to validate a sunpatch study for an existing office space.
But my renders don't show shadows correctly. I use Sketchup export
with a rif file set to QUALITY=high and other settings set to
MEDIUM to rapidly show direct sunlight on workplanes. The modeled
space has the correct window openings and surface reflectances.
Even when I adjust exposure interactively in X window, I don't see
the correct sunpatch/shadows I expect for the location/time sky
model (+i).
my render settings are as follows:
< Scene_1.oct
rvu -vu 0 0 1 -vf views/Scene_1.vf -ps 1 -pt .04 -dp 2048 -ar 105 -
ms 0.24 -ds .1 -dj .65 -dt .05 -dc .75 -dr 3 -sj 1 -st .01 -ab 3 -
aa .1 -ad 1536 -as 768 -av 8 8 8 -lr 12 -lw .0005 -R Scene_1.rif -o
x11 -pe -4 Scene_1.oct>>
Any help there would be appreciated\\\
regards
Steve
_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general
_________________________________________________________________
As I replied to Greg, I set the sketchup location and time to what was required for the simulation. And the north direction as well.
Somehow the export creates a five hour difference.
Is there a time-zone setting in the SU2RAD ruby script?
regards
Steve
···
----------------------------------------
From: [email protected]
Subject: Re: [Radiance-general]radiance daylight study
Date: Sat, 19 Jan 2008 21:02:32 +0000
To: [email protected]
On 19 Jan 2008, at 13:33, steve michel wrote:
Even when I adjust exposure interactively in X window,
I don't see the correct sunpatch/shadows I expect for
the location/time sky model (+i).
As Greg already pointed out check your location options.
The default location in Sketchup is Boulder/CO.
Also Sketchup assumes that your North direction is at the top
of the screen if you're in a plan view (+y if +z is height).
The conversion of Sketchup settings to gensky parameters
works on Macs rather well. On Windows the locations data file
is named differently which I haven't taken care of yet.
my render settings are as follows:
< Scene_1.oct
rvu -vu 0 0 1 -vf views/Scene_1.vf -ps 1 -pt .04 -dp 2048 -ar 105 -
ms 0.24 -ds .1 -dj .65 -dt .05 -dc .75 -dr 3 -sj 1 -st .01 -ab 3 -
aa .1 -ad 1536 -as 768 -av 8 8 8 -lr 12 -lw .0005 -R Scene_1.rif -o
x11 -pe -4 Scene_1.oct
You can reduce the QUALITY setting in the .rif file to increase
the speed of the preview image. You can increase the 'ab' setting
separately ('render=' option in the rif file) if the settings
rad would create are too low.
Regards,
Thomas
_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general
_________________________________________________________________
I just checked what the script is doing. The time zone information
is taken from the ShadowTime setting in Sketchup (a Ruby Time
object). I assume the conversion to HH:MM takes the time zone
of your computer into account although the setting in the Shadow
dialog is always GMT (or GMT+1).
I'll try to find a fix for this.
Regards,
Thomas
···
On 20 Jan 2008, at 05:06, steve michel wrote:
Somehow the export creates a five hour difference.
Is there a time-zone setting in the SU2RAD ruby script?