 |
|
|
|
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Hi guys,
Look at this file. When I render this without the cylinder at the end. My filter
box is green. When its in, my filter' green complexion disappears.
What am I doing wrong?
Anne
************************************
#include "textures"
#include "colors"
#include "stones.inc"
#include "Glass"
global_settings
{
max_trace_level 10
}
#declare Lightbulb = union {
merge {
cylinder {
<0,0,1>, <0,0,0>, 0.2
//scale <0.35, 0.35, 1.0>
translate 1*z
}
texture {
pigment {color rgb <1, 1, 1>}
finish {ambient .8 diffuse .6}
}
}
}
camera {
location <10, 10, 1>
look_at <0, 0, 0>
right x*1920/1080
}
light_source {
<0, 2, 0>
color White
looks_like { Lightbulb }
}
//Filter box
box { <0.2, 5, 0.2>, <2.2, 5.125, 2.2>
pigment { color rgbft <0.1, 1.0, 0.1, 1.0, 0> }
texture {
T_Glass2
}
finish {
diffuse 0.9
ambient 0.4
specular 1.0
roughness 0.1
brilliance 0.01
reflection {
0.3
}
refraction 1.0
}
}
//Floor
box { <0, 0, 0>, <5, 0.125, 5>
texture{
T_Stone44
scale 2
}
}
cylinder { <0, 0, 0>, <0, 10, 0>, 0.0625
pigment { color Blue }
finish {
ambient 0.5
diffuse 0.5
}
}
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Never mind.
I played with the cylinder to discover the basic concept of the lightsource
being inside the cylinder. Silly me.
If the moderators want to delete my post, I'll play along. LOL
Anne
"Anne Courtois" <nomail@nomail> wrote:
> Hi guys,
>
> Look at this file. When I render this without the cylinder at the end. My filter
> box is green. When its in, my filter' green complexion disappears.
>
> What am I doing wrong?
>
> Anne
>
> ************************************
> #include "textures"
> #include "colors"
> #include "stones.inc"
> #include "Glass"
>
> global_settings
> {
> max_trace_level 10
> }
>
> #declare Lightbulb = union {
> merge {
> cylinder {
> <0,0,1>, <0,0,0>, 0.2
> //scale <0.35, 0.35, 1.0>
> translate 1*z
> }
> texture {
> pigment {color rgb <1, 1, 1>}
> finish {ambient .8 diffuse .6}
> }
> }
>
> }
>
> camera {
> location <10, 10, 1>
> look_at <0, 0, 0>
> right x*1920/1080
> }
>
>
> light_source {
> <0, 2, 0>
> color White
> looks_like { Lightbulb }
> }
>
> //Filter box
> box { <0.2, 5, 0.2>, <2.2, 5.125, 2.2>
> pigment { color rgbft <0.1, 1.0, 0.1, 1.0, 0> }
> texture {
> T_Glass2
> }
> finish {
> diffuse 0.9
> ambient 0.4
> specular 1.0
> roughness 0.1
> brilliance 0.01
> reflection {
> 0.3
> }
> refraction 1.0
> }
> }
>
> //Floor
> box { <0, 0, 0>, <5, 0.125, 5>
> texture{
> T_Stone44
> scale 2
> }
> }
>
> cylinder { <0, 0, 0>, <0, 10, 0>, 0.0625
> pigment { color Blue }
> finish {
> ambient 0.5
> diffuse 0.5
> }
> }
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
On 8/2/2015 8:13 PM, Anne Courtois wrote:
> If the moderators want to delete my post, I'll play along. LOL
I don't think anyone on this newsgroup is moderate. We are all extreme.
One way or another. ;-)
Welcome Anne. :-D
I am glad you sorted it out.
--
Regards
Stephen
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
On 2/08/2015 21:13, Anne Courtois wrote:
> Never mind.
>
> I played with the cylinder to discover the basic concept of the lightsource
> being inside the cylinder. Silly me.
>
> If the moderators want to delete my post, I'll play along. LOL
a bit off topic, but: does this happen? Forums (technically, this is a
newsgroup, but I suppose I'm the only one still using nntp to access
this) that delete posts where a person answers his/her own question?
Sounds like throwing away possibly useful information :/
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
> On 2/08/2015 21:13, Anne Courtois wrote:
> > Never mind.
> >
> > I played with the cylinder to discover the basic concept of the lightsource
> > being inside the cylinder. Silly me.
I've done that and variations on that theme many times. You'd think something
as basic and fundamental as a light source would be somewhat foolproof, but we
users find new and clever ways to botch them in the most unusual ways.
Welcome to the LION's club (Light Source Inside Object ... Nevermind).
You now have the experience to proceed beyond Level One. Carry on :)
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
On 8/2/2015 10:14 PM, Zeger Knaepen wrote:
> On 2/08/2015 21:13, Anne Courtois wrote:
>> Never mind.
>>
>> I played with the cylinder to discover the basic concept of the
>> lightsource
>> being inside the cylinder. Silly me.
>>
>> If the moderators want to delete my post, I'll play along. LOL
>
> a bit off topic, but: does this happen? Forums (technically, this is a
> newsgroup, but I suppose I'm the only one still using nntp to access
> this) that delete posts where a person answers his/her own question?
>
That is a new one on me or maybe I should say an old one. ;-)
I use Mozilla Thunderbird to access the newsgroup and can delete my own
posts but no others. I don't think anyone has moderated the site since
Uncle Ken, dropped out. :-(
> Sounds like throwing away possibly useful information :/
>
It does but no one like their mistakes kept public. ;-)
--
Regards
Stephen
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Stephen <mca### [at] aol com> wrote:
> On 8/2/2015 10:14 PM, Zeger Knaepen wrote:
> > On 2/08/2015 21:13, Anne Courtois wrote:
> >> Never mind.
> >>
> >> I played with the cylinder to discover the basic concept of the
> >> lightsource
> >> being inside the cylinder. Silly me.
> >>
> >> If the moderators want to delete my post, I'll play along. LOL
> >
> > a bit off topic, but: does this happen? Forums (technically, this is a
> > newsgroup, but I suppose I'm the only one still using nntp to access
> > this) that delete posts where a person answers his/her own question?
> >
>
> That is a new one on me or maybe I should say an old one. ;-)
> I use Mozilla Thunderbird to access the newsgroup and can delete my own
> posts but no others. I don't think anyone has moderated the site since
> Uncle Ken, dropped out. :-(
>
>
> > Sounds like throwing away possibly useful information :/
> >
>
> It does but no one like their mistakes kept public. ;-)
>
> --
>
> Regards
> Stephen
Bah...I don't mind. If it can help someone. However, it seemed tedious to search
here and that might be because it is in fact a newsgroup. I might have accessed
it with nntp back in 1996, but not anymore...
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
> Hi guys,
>
> Look at this file. When I render this without the cylinder at the end. My filter
> box is green. When its in, my filter' green complexion disappears.
>
> What am I doing wrong?
>
> Anne
Some hints:
>
> ************************************
> #include "textures"
> #include "colors"
> #include "stones.inc"
> #include "Glass"
>
> global_settings
> {
> max_trace_level 10
> }
>
A merge inside an union for a single object? Beter to just use the
cylinder here, unless you want to eventualy make it more complexe. Then,
only the merge OR union, not both, would be needed.
> #declare Lightbulb = union {
> merge {
> cylinder {
> <0,0,1>, <0,0,0>, 0.2
> //scale <0.35, 0.35, 1.0>
> translate 1*z
> }
> texture {
> pigment {color rgb <1, 1, 1>}
> finish {ambient .8 diffuse .6}
You need to add some transparency or the no_shadow attribute, otherwise,
the light can't come out.
You should use emission instead of ambient and set diffuse to no more
than 0.2.
> }
> }
>
> }
>
> camera {
> location <10, 10, 1>
> look_at <0, 0, 0>
> right x*1920/1080
> }
>
>
> light_source {
> <0, 2, 0>
> color White
> looks_like { Lightbulb }
> }
>
> //Filter box
> box { <0.2, 5, 0.2>, <2.2, 5.125, 2.2>
> pigment { color rgbft <0.1, 1.0, 0.1, 1.0, 0> }
> texture {
> T_Glass2
> }
The T_Glass2 texture come with it's own pigment and finish, and get
layered over your pigment with a default finish.
As you define both pigment and finish, you don't realy need to add that
texture.
> finish {
> diffuse 0.9
> ambient 0.4
> specular 1.0
> roughness 0.1
> brilliance 0.01
> reflection {
> 0.3
> }
The summ of diffuse, ambient and reflection should stay under 1.
Otherwise, the object return more light than it receive.
brilliance 0.01 is extremely low, making the illumination almost
independent from the light's incident angle.
> // refraction 1.0
This is obsolete as of version 3.0.
The presence of filter or transmit make the object transparent.
If you want refraction, you need to add an interior block and define an
ior different than 1. Water have an ior of about 1.33 depending on
temperature and dissolved substences, and 1.5 is a good general starting
value for most transparent materials like glass.
> }
> }
>
> //Floor
> box { <0, 0, 0>, <5, 0.125, 5>
> texture{
> T_Stone44
> scale 2
> }
> }
>
> cylinder { <0, 0, 0>, <0, 10, 0>, 0.0625
> pigment { color Blue }
> finish {
> ambient 0.5
> diffuse 0.5
> }
> }
>
>
>
>
>
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Am 03.08.2015 um 19:10 schrieb Alain:
>> finish {
>> diffuse 0.9
>> ambient 0.4
>> specular 1.0
>> roughness 0.1
>> brilliance 0.01
>> reflection {
>> 0.3
>> }
>
> The summ of diffuse, ambient and reflection should stay under 1.
> Otherwise, the object return more light than it receive.
Actually ambient is outside of this equation. The choice of this setting
should be based on...:
- The diffuse value (if you increase diffuse, you should also increase
ambient)
- The brightness and geometry of surrounding objects (if they're plain
white and oriented straight towards the object in question, ambient
should equal diffuse)
The above is true for brilliance 1.0, or if the "albedo" keyword is used
with diffuse.
As for the sum of diffuse and reflection, the rule that it should stay
under 1 is only true when...:
- The reflection is constant (as is the case here), AND
- brilliance is 1.0, or the "albedo" keyword is used with diffuse.
The most realistic results can be obtained by using:
#version 3.71; // !!!
texture {
finish {
ambient A*D
diffuse albedo D
brilliance 1.0
specular albedo R
fresnel on // this is what you'll need 3.7.1 for
reflection { R fresnel on }
}
}
interior {
ior I
}
with D <= 1.0, R <= 1.0, and A depending on surrounding materials and
geometry (better yet, use radiosity); no other constraints apply, as the
"fresnel on" in the finish block itself and in the reflection block will
make sure that the diffuse is properly balanced with the reflection.
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
|
|
