Something like this:
======================================
texture {
gradient x
texture_map {
[0.2  pigment{Red}]
[0.4  pigment { Blue }]
[0.6  pigment { Yellow}]
[0.9  pigment{Green }]}
}
=======================================
But I couldn't undesrstand right the values that are before the pigment.




news:42b96cf9$1@news.povray.org...
> Hi Mike,
>
> And using more than two colors?
>
> I was reading the documentation about that. They say that:
> "When the gradient x function returns values from 0.0 to 0.3 the red 
> highlighted texture is used. From 0.3 to 0.6 the texture identifier 
> T_Wood11 is used. From 0.6 up to 0.9 a blend of T_Wood11 and a shiny 
> DMFWood4 is used. From 0.9 on up only the shiny wood is used."
>
> I thought that number is used to divide the object in different parts, for 
> exemple if your are using 3 colors you can put 1/3 before the pigment 
> instead of the 1/2 that you've put the divide the object. But I obtain 
> some strange results.
>
> ======================================
> texture {gradient x
> texture_map {[0.3  pigment {rgb <0,0,1>}]
>               [0.6  pigment {rgb <1,0,0>}]
>              [0.9 pigment { rgb <0, 1, 0>}] }
>  //translate <-0.5,0,0>   // move transition point to the origin
>  scale 100              // scale up the texture_map
>  translate <0.95/2,0,0> // move the transition point to half way
> ======================================
>
> Well, I'm not understanding it properly.
>
> Thanks for the anwers,
> Oleguer
>
>

> news:dCr### [at] econymdemoncouk...
>> Wasn't it Oleguer Vilella who wrote:
>>>Hi again,
>>>
>>>Using this function:
>>>======================================
>>>#declare Blobs = function { f_blob2(x, y, z, 0.95, 4, 1.8, 1) }
>>>isosurface {
>>>function { Blobs(x, y, z) }
>>>max_gradient 6
>>>contained_by { sphere { 0, 9 } }
>>>scale 2
>>>rotate 75*y
>>>translate <0, 0, 0>
>>>pigment { color Blue }
>>>}
>>>======================================
>>>I've here two blobs situated along the y axis. Is it anyway to give a
>>>texture to the first and then giving another texture and color to the 
>>>other
>>>using the function?
>>
>> You can't do it from the function itself, because the function only
>> thinks of the whole shape as a single primitive object. It doesn't know
>> that the resulting shape is going to look like two blobs.
>>
>> What you can do, is to use a texture_map to apply different textures, or
>> a pigment_map to apply different pigments to chosen regions of the
>> surface, like this:
>>
>> (The "0.95/2" I used is calculated to be half way to the blob separation
>> "0.95" specified in the first line.)
>>
>> #declare Blobs = function { f_blob2(x, y, z, 0.95, 4, 1.8, 1) }
>> isosurface {
>> function { Blobs(x, y, z) }
>> max_gradient 6
>> contained_by { sphere { 0, 9 } }
>> texture{gradient x
>>  texture_map {[0.5  pigment {rgb <0,0,1>}]
>>               [0.5  pigment {rgb <1,0,0>}]}
>>  translate <-0.5,0,0>   // move transition point to the origin
>>  scale 100              // scale up the texture_map
>>  translate <0.95/2,0,0> // move the transition point to half way
>>  }
>> scale 2
>> rotate 75*y
>> translate <0, 0, 0>
>> }
>>
>>
>> Or
>>
>> pigment {gradient x
>>  pigment_map {[0.5  rgb <0,0,1>]
>>               [0.5  rgb <1,0,0>]}
>>  translate <-0.5,0,0>   // move transition point to the origin
>>  scale 100              // scale up the texture_map
>>  translate <0.95/2,0,0> // move the transition point to half way
>>  }
>>
>> -- 
>> Mike Williams
>> Gentleman of Leisure
>
>

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