[Radiance-general] rotation

[Giulio Antonutto]

why not to use replmarks?

draw triangles in your favourite 3d program and use them to feed
xform...

easy and quick...

ciao

G>

 

 

________________________________

From: radiance-general-bounces at radiance-online.org
[mailto:radiance-general-bounces at radiance-online.org] On Behalf Of Chris
Foster
Sent: 16 August 2006 09:54
To: Radiance general discussion
Subject: [Radiance-general] rotation

 

Hi all.

Im back with my spotlights again im afraid. Im havin immense trouble
rotating them so that they face the same way. i have tried using a range
of values for rx ry and rz in my xform command and keep gettin odd
results. instead of rotating my spot they seem to actually move it.

this is incredible frustrating! my xform file is below.

# move display into place

!xform -n display -t 2.4 7 2 display2.rad

# move 3 spotlights into rear of room

!xform -n spot1 -t 1.25 1 3.8 (-rx -ry -rz being used here) spotc.rad

!xform -n spot2 -t 2.5 1 3.8 (-rx -ry -rz being used here) spotc.rad

!xform -n spot3 -t 3.75 1 3.8 (-rx -ry -rz being used here) spotc.rad

my spotlight dimensions

spotc_light ring spotc.d
0
0
8
        0 0 -0.00025
        0 0 -1
        0 0.15

i have tried this for a couple of days now and it is beginnin to get my
goat. i want them in the same position as in the translate command, just
pointing in a different direction. the spotlights defualt is aimed
vertical down and i am trying to get them to aim about 45-60 degrees
from the horizontal as well as all converged to one point (the display).
can anyone please help in this matter before i throw my computer out the
window...(probably just throw myself though as the computer can only do
what i tell it!)

thanks in advance.

Chris

p.s. thanks for ur display help tom



void light display_light
0
0
3 2.23 2.23 2.23

void mirror display_surface
1 display_light
0
3 0.8 0.8 0.8

(example for something with 80 % reflectance).



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