V-Ray for SketchUp - Rectangular Lights - tutorial Video Lecture | V-RAY Tutorial (English): For Beginners to Beyond - Professional Skills

like I in the field that we are going to
see how the rectangular light works and
some of their properties I want to
create a rectangular light using the
this iconic that we raked over click
there I'm going I'm going to use this
line as a reference so I'm going to
create the line there if you want to get
access to the rectangular light
properties just right click on the
lights and so that Dietrich was captured
and then edit light so this is the light
editor you can see the color intensity
this option here changed color of the
light so for example if you want a warm
light just change the color to a warm
color if you want to increase the
intensity of the light just change the
intensity value and also we support
different units so you can use a lumens
or you can even works also we have the
sampling area and the subdivided
division control the quality of the
shadow some times we are going to get
char noise on the shadows and by
increasing this panel you are going to
reduce the the noise but the first thing
I want to point out is that no decade in
our previous version we have no decade
enabled by default and I want to show
you what this option could be does the
nada que allows you to have a very
constant light around the whole room and
this is not what happened in the real
world so the object closer to the camera
are going to have the same amount of
elimination of the object further away
from the camera if you see here in this
room we have a very flat elimination and
this is not very good so that's why we
change these options to disabled by
default
the Omni lights on the spotlight have
different and decay linear inverse and
inverse square the rectangular light
only have these options in a decade
but if you have the nada que enable
you're using linear decay if you have
the no decay disabled you are using
inverse square decay so right now if I
click render you are going to see that
my object closer to the camera have more
illumination that my object further away
from the camera one very important thing
about the rectangular light is that you
can see the reflections of the light in
the material that have reflections pick
up the lighthouse a physical geometric
form that doesn't that doesn't happen
with the Omni lights our ideas like an
spotlight okay I want to go to the area
again and we have double side options
these options allow you to get get
illumination in the front face front
face and also on the back face you can
see here I only have illumination in my
front face but with double size and a
row I will get light in both types of my
geometry see here we have light in my
backplane let's go back to my light lter
and I want to show you the invisible and
at the same time I'm going to show you
the story very much invisible let's make
that the invisible the light from the
camera so you are not going to see their
light in your render you're going to see
the illumination but not the actual
rectangular lights and story very map
allow you to calculate the light effects
you should get ready Maps so does mean
that we are going to have a faster
render and the shadows are going to be
smoother you can see here we have some
noise no matter that I have in low
quality you can see some noise I mean
this because I have a lot
but you're going to see that when I
render this scene we'd store area map
because I'm using the afraid enough to
calculate the rectangle lights I'm going
to have less noise on the shadows area
you can see here and I have a faster
render tool so this is very cool to use
storage ready map and also invisible you
can see here I'm not seeing the light in
the vendor but I still getting the
illumination okay so I'm going to right
click again in the light and show you
one last options is effect reflections
if you disable this guy let me enable
the invisible if you disable these
effect reflection you're not going to
see that reflections on my teapot on the
reflective object no matter that you
have the light in the the wall or
whatever you have to light you can see
here I don't have the flexions this
option in combination with invisible
light is very useful too when you have
to play to place the light on the wall
and those under windows and just disable
the effect of lectures and also make the
line invisible to see your background or
to see what you have behind the windows
okay this is what we have for this part
so I'm going to open a new file and I
will want to use those objects that I
show you to render a very simple scene
here we go this is the scene that I want
to render as you can see it's just a
fake interior just open and the first
thing that I want to do is just create a
rectangular light for my lunch click on
the rectangular light and I want to
create and this small rectangular light
I want to place the rectangular light
just right in the middle of the lamp and
also I want to move this light yes right
in the center
and because I need illumination in all
directions
I want to duplicate the lightboard first
I'm going to change the properties let
me go theory for my intensity so my
life's gonna be very intensity and also
I'm going to use very a one color store
iridium maps and double-size because I
need light in front of my light and also
in my back then I want to rotate to
create another copy
not the light in order to feel like kind
of 360 illumination of my light the next
step is just create a rectangle night in
my ceiling again I have referent lines
that I made just to have the correct
location and also I want to create a
lower light in this area okay then I
want to enter to the properties again to
edit the properties change the intensity
three large light produce more
illumination so you're going to need
less multiplier let me change the color
to a cool color or so story free Maps I
don't need to make this line visible and
again I want to do the same thing with
the top light change the intensity to
three also store your free maps and
that's it okay I'm going to show you the
render without light at all and then I'm
gonna make a vendor to see what we have
with the light
okay mr. vendor without any lights I
only have the GI enable with a
multiplier of one just to show you the
effects of the light and also I have an
achiara in my background switcher to
cast some reflections okay now I place
light I'm going to render this the same
to see my final result with two
rectangular lights to illuminate the
room cause my tone is very dark and also
two rectangular lights to illuminate the
lamp this lamp here have at inside
material so I should get a nice
translucency effect in my lungs here we
go
this is a final result you see a nice
illumination probably you have to
increase the intensity of the light I'll
just click on the color Corrections
option here we have a nice color
Corrections and then change the or
correct the color or the lumination
there it goes like that and you don't
have to render your scene again so this
is probably hard for you guys awfully
you can enjoy this video so see you next
time bye bye