does anybody have a good blood texture?

mine doesn't look that good.

Thx.

--
Gary Blessing

Have Laptop, Will Travel.

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Gary Blessing wrote:

> does anybody have a good blood texture?
> 
> mine doesn't look that good.
> 
> Thx.
> 
> --
> Gary Blessing

> Have Laptop, Will Travel.
> 
> 
> 
Too much yellow in the colour to start.  And it looks too textured and 
opague, thought the yellow might have a lot to do with that.

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color rgbft <0.27255,0,0, 0.8, 0.4>}
 finish {ambient 0.015 diffuse 0.85 }} is what it is.....

there's no yellow in it......

G.


"Jim Charter" <jrc### [at] msncom> wrote in message
news:40c5f217$1@news.povray.org...
> Gary Blessing wrote:
>
> > does anybody have a good blood texture?
> >
> > mine doesn't look that good.
> >
> > Thx.
> >
> > --
> > Gary Blessing

> > Have Laptop, Will Travel.
> >
> >
> >
> Too much yellow in the colour to start.  And it looks too textured and
> opague, thought the yellow might have a lot to do with that.

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it's supposed to look bad if there are pools of blood on the street :P

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Jim Charter wrote:
>>
> Too much yellow in the colour to start.  And it looks too textured and 
> opague, thought the yellow might have a lot to do with that.

I think blood's very opaque - even moreso than what he has.

I can't see through even a normal-sized drop of blood, while I can 
through his texture.

Personally I think it needs a bit of sub-surface scattering, though, 
since if you have blood in a syringe you get that effect.

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Gary Blessing wrote:

> color rgbft <0.27255,0,0, 0.8, 0.4>}
>  finish {ambient 0.015 diffuse 0.85 }} is what it is.....
> 
> there's no yellow in it......
> 
> G.
> 
> 
> "Jim Charter" <jrc### [at] msncom> wrote in message
> news:40c5f217$1@news.povray.org...
> 
>>Gary Blessing wrote:
>>
>>
>>>does anybody have a good blood texture?
>>>
>>>mine doesn't look that good.
>>>
>>>Thx.
>>>
>>>--
>>>Gary Blessing

>>>Have Laptop, Will Travel.
>>>
>>>
>>>
>>
>>Too much yellow in the colour to start.  And it looks too textured and
>>opague, thought the yellow might have a lot to do with that.
> 
> 
> 
Sorry  I think of the green component as adding Yellow to red.  Reduce 
the green component on other words.  It needs to be a cooler cleaner red

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How about a darker red?  Try using some media, maybe an absorption or a
scattering with added absorption, with a completely transparent pigment and
a finish with some specular highlight and variable reflection.  That should
give a much more realistic result then simply having the surface colored red
(especially if volume is going to vary).  Remember that blood is pretty
dense in its red coloring so the media colors should be multiplied fairly
high.  It doesn't take much blood before the color drops to almost black,
wheras only thin smears produce that bright red.

Skip

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Gary Blessing wrote:
> does anybody have a good blood texture?
>
> mine doesn't look that good.

Maybe a bit more specular and/or less roughness.  It looks like solid red
candle wax or plastic at the moment.  It needs to be shinier imo.

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Gary Blessing wrote:
> color rgbft <0.27255,0,0, 0.8, 0.4>}
>  finish {ambient 0.015 diffuse 0.85 }} is what it is.....
> 
> there's no yellow in it......
> 
> G.
> 
> 
> "Jim Charter" <jrc### [at] msncom> wrote in message
> news:40c5f217$1@news.povray.org...
> 
>>Gary Blessing wrote:
>>
>>
>>>does anybody have a good blood texture?
>>>
>>>mine doesn't look that good.
>>>
>>>Thx.
>>>
>>>--
>>>Gary Blessing

>>>Have Laptop, Will Travel.
>>>
>>>
>>>
>>
>>Too much yellow in the colour to start.  And it looks too textured and
>>opague, thought the yellow might have a lot to do with that.
> 
> 
> 
as a total aside, what makes mozilla news highlight a message in orange
the cat attacked the keyboard and gravity assisted en route to the floor

stephen

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Gary Blessing nous apporta ses lumieres ainsi en ce 08/06/2004 13:36... :

>color rgbft <0.27255,0,0, 0.8, 0.4>}
> finish {ambient 0.015 diffuse 0.85 }} is what it is.....
>
>there's no yellow in it......
>
>G.
>
>
>"Jim Charter" <jrc### [at] msncom> wrote in message
>news:40c5f217$1@news.povray.org...
>  
>
>>Gary Blessing wrote:
>>
>>    
>>
>>>does anybody have a good blood texture?
>>>
>>>mine doesn't look that good.
>>>
>>>Thx.
>>>
>>>--
>>>Gary Blessing

>>>Have Laptop, Will Travel.
>>>
>>>
>>>
>>>      
>>>
>>Too much yellow in the colour to start.  And it looks too textured and
>>opague, thought the yellow might have a lot to do with that.
>>    
>>
>
>
>  
>
Maybe to much transmit. What if you set transmit to zero? and lower 
filter a bit? Also, adding media atenuation and some scattering may 
help. As it is now, the transmit plus filter adds up to 1.2, the net 
result is an intensification of any ray passing thrue it. Normaly, you 
want to keep filter + transmit < 1.

Alain

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