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man, I feel glad I have brought CGSphere to the attention of the povray
community. You guys never fail to amaze me with so many different concepts
for spheres over checkered planes in quality images. :)
I thought I'd be able to do something with that, but my imagination simply
isn't up to the task... :P
BTW, I don't see any problem with the coffee liquid: it's slightly overcome
by the glass reflections, but looks right to me...
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"nemesis" <nam### [at] gmail com> wrote:
> man, I feel glad I have brought CGSphere to the attention of the povray
> community. You guys never fail to amaze me with so many different concepts
> for spheres over checkered planes in quality images. :)
>
> I thought I'd be able to do something with that, but my imagination simply
> isn't up to the task... :P
>
> BTW, I don't see any problem with the coffee liquid: it's slightly overcome
> by the glass reflections, but looks right to me...
Thanks. I often think that I'm out of ideas, at least original ones, but
occassionally I'll get one I can follow up on (somebody recently did a
toilet before I could put one together...)
-tgq
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"Trevor G Quayle" <Tin### [at] hotmailcom> wrote:
> My latest CGSphere entry (#12) for your approval.
Add me to the list of people who love the image. I sure hope that opaque
coffee is OK, I've been drinking it that way for decades ;-)
Regards,
Mike C.
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"Mike the Elder" <zer### [at] wyanorg> wrote:
> "Trevor G Quayle" <Tin### [at] hotmailcom> wrote:
> > My latest CGSphere entry (#12) for your approval.
>
> Add me to the list of people who love the image. I sure hope that opaque
> coffee is OK, I've been drinking it that way for decades ;-)
>
> Regards,
> Mike C.
If it's too strong, just add milk. It's in the fridge. Or cream if you
like. But, for the love of pete and everything decent, don't add sugar...
-tgq
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Trevor G Quayle wrote:
> My latest CGSphere entry (#12) for your approval.
> Original link: [http://www.cgsphere.com/gallery/details/?submission_id=3288]
>
> -tgq
>
>
> ------------------------------------------------------------------------
>
I've been lurking here for a little while and am continuously amazed at
what you guys can do with a raytracer. The attention to detail in this
is fantastic.
The reflections over the povray and Funn logos, and on the coffee cup
handle rim change - can I ask how do you do those?
Davo
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"Trevor G Quayle" <Tin### [at] hotmailcom> schreef in bericht
news:web.46704d92fabeec67c150d4c10@news.povray.org...
>
> If it's too strong, just add milk. It's in the fridge. Or cream if you
> like. But, for the love of pete and everything decent, don't add sugar...
>
Oh dear! I love black coffee... but I just need some sugar in it :-)
Thomas
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Davo <Dav### [at] Davocom> wrote:
> Trevor G Quayle wrote:
> > My latest CGSphere entry (#12) for your approval.
> > Original link: [http://www.cgsphere.com/gallery/details/?submission_id=3288]
> >
> > -tgq
> >
> >
> > ------------------------------------------------------------------------
> >
> I've been lurking here for a little while and am continuously amazed at
> what you guys can do with a raytracer. The attention to detail in this
> is fantastic.
>
> The reflections over the povray and Funn logos, and on the coffee cup
> handle rim change - can I ask how do you do those?
>
> Davo
For both of those details I (and the stickers on the front of the base) I
used and image map. I then evaluate the image map as a function and use it
to control both the pigment and normals. For the normals, it is an average
pattern of the normal define the raised look of the lettering and the
different bumpiness of the lettering and glass. I can post some source if
you would like to see how I did it.
-tgq
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>
> For both of those details I (and the stickers on the front of the base) I
> used and image map. I then evaluate the image map as a function and use it
> to control both the pigment and normals. For the normals, it is an average
> pattern of the normal define the raised look of the lettering and the
> different bumpiness of the lettering and glass. I can post some source if
> you would like to see how I did it.
>
> -tgq
>
>
Hi Trevor,
If you could post a bit of the code I'd really like to see it, thanks
very much.
Dave
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Here is some example source. This is the mug and it's material (using the
attached image map). In this example, the image is given a cylindrical
warp, but any kind of transform that is appropriate can be accomodated with
the right functions.
To make the image map, I just created an appropriate sized image file and
used the povlogo.ttf font style for the logo. I then gave it a blur to
blur the edges so that it makes a rouded bump rather than an abrupt one.
Let me know if you have any questions about this.
//START
#declare MUGLOGO=function{pigment{image_map{png "MUG.png" once interpolate
2} warp{cylindrical} scale 99}}//wrap mug logo cylindrically and scale to
height of mug
#declare
MUGLOGO2=function{select(sqrt(x*x+z*z)-39,1,MUGLOGO(x,y,z).gray)}//Turn
into function (select function makes sure it only appears on outside of mug
object
#declare MMUG=
material{
texture{
pigment{function{MUGLOGO2(x,y,z)} colour_map{[0.99 rgb 0][0.99 rgb
<0.7,0.7,0.6>]} //Apply pigment according to desired logo and background
colours
}
finish{
conserve_energy
diffuse 0.6
ambient 0
reflection{0 1 fresnel on metallic 0}
}
normal{
average
normal_map{
[1 function{MUGLOGO2(x,y,z)} normal_map{[0.9 bumps 0.05 scale
0.25][1 bumps .015 scale 8]}]//apply different bumpiness to the logo and
the background
[1 function{MUGLOGO2(x,y,z)} bump_size -0.5 poly_wave 10]
//normal gives the raised appearance to the logo
}
}
}
interior{
ior 1.51
caustics 1
fade_distance 10
fade_power 1000
}
}
#declare CMug=
union{
union{
difference{
cylinder{y,y*95,40}
cylinder{y*8 y*100 36}
cylinder{y*6 y*100 34}
torus{34 2 translate y*8}
cylinder{0 y*2 34}
torus{34 2 scale <1,1/2,1> translate y*1}
}
torus{38 2 scale <1,2,1> translate y*95}
torus{38 2 scale <1,1/2,1> translate y*1}
union{//Handle
difference{
torus{34 4}
intersection{
plane{-x 0 rotate y*30}
plane{-x 0 rotate -y*30}
}
}
sphere{x*34 4 rotate y*60}
sphere{x*34 4 rotate -y*60}
scale<20/34,2,1>
rotate x*90
translate <-51,50,0>
}
}
material{MMUG}
}
//END
-tgq
Post a reply to this message
Attachments:
Download 'mug.png' (54 KB)
Preview of image 'mug.png'
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Trevor G Quayle wrote:
> Here is some example source. This is the mug and it's material (using the
> attached image map). In this example, the image is given a cylindrical
> warp, but any kind of transform that is appropriate can be accomodated with
> the right functions.
> To make the image map, I just created an appropriate sized image file and
> used the povlogo.ttf font style for the logo. I then gave it a blur to
> blur the edges so that it makes a rouded bump rather than an abrupt one.
>
> Let me know if you have any questions about this.
Thanks Trevor, It will take a bit of study before I could ask a serious
question. There's so little code to create such a realistic effect.
(There goes this weekend :-)).
Dave
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