Here's my most successful attempt at a sunset with the new MegaPov 05.
Changes to noise mean that many of the patterns have changed in subtle ways.
With media clouds have become softer and whispier.
The spotted, granite and wrinkles pattern are all affected. This pic uses
two wrinkles densities at right angles to one another.

A suggestion - Nathan can you gives us the option of using the old noise
pattern as well as the new in 06.  I know one can switch the version number
but having the old noise as a command would be more usesful.

Better still is it possible for the user to have some control over the noise
function.  Perhaps something like

noise Float

Mick

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Attachments:
Download 'sky.jpg' (41 KB)

Preview of image 'sky.jpg'

Pretty! What's the render time?

sig

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In article <392649eb@news.povray.org>, "Mick Hazelgrove" 
<mha### [at] redhotantcom> wrote:

> A suggestion - Nathan can you gives us the option of using the old 
> noise pattern as well as the new in 06.  I know one can switch the 
> version number but having the old noise as a command would be more 
> usesful.

You mean have duplicate features for the old and new versions? Like 
old_bozo, old_wrinkles, old_turbulence, etc? Or some kind of flag, a 
"#new_noise on|off" statement for choosing the kind of noise to use?


> Better still is it possible for the user to have some control over 
> the noise function.  Perhaps something like
> 
> noise Float

Umm, what exactly do you want to control? Frequency?(Scaling, in other 
words.) Or amplitude?(Easy with isosurface functions.)
Or something else...interpolation type?

-- 
Christopher James Huff - Personal e-mail: chr### [at] yahoocom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/

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Nice low sky, but the water surface ruins the picture.





> Here's my most successful attempt at a sunset with the new MegaPov 05.
> Changes to noise mean that many of the patterns have changed in subtle ways.
> With media clouds have become softer and whispier.
> The spotted, granite and wrinkles pattern are all affected. This pic uses
> two wrinkles densities at right angles to one another.
>
> A suggestion - Nathan can you gives us the option of using the old noise
> pattern as well as the new in 06.  I know one can switch the version number
> but having the old noise as a command would be more usesful.
>
> Better still is it possible for the user to have some control over the noise
> function.  Perhaps something like
>
> noise Float
>
> Mick
>
>  [Image]

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Without knowing exactly what changes were made  from 04 to 05 I really can't
say in detail. Also as I don't know how the noise function used to create
patterns is generated I can't tell you what parameters I would like to be
able to control. All I can say is that media clouds are now much softer and
whispier than they were in 04.  If what was changed is now made into a
variable we can control ...

Mick

"Chris Huff" <chr### [at] yahoocom> wrote in message
news:chrishuff_99-68EC87.06380420052000@news.povray.org...
> In article <392649eb@news.povray.org>, "Mick Hazelgrove"
> <mha### [at] redhotantcom> wrote:
>
> > A suggestion - Nathan can you gives us the option of using the old
> > noise pattern as well as the new in 06.  I know one can switch the
> > version number but having the old noise as a command would be more
> > usesful.
>
> You mean have duplicate features for the old and new versions? Like
> old_bozo, old_wrinkles, old_turbulence, etc? Or some kind of flag, a
> "#new_noise on|off" statement for choosing the kind of noise to use?
>
>
> > Better still is it possible for the user to have some control over
> > the noise function.  Perhaps something like
> >
> > noise Float
>
> Umm, what exactly do you want to control? Frequency?(Scaling, in other
> words.) Or amplitude?(Easy with isosurface functions.)
> Or something else...interpolation type?
>
> --
> Christopher James Huff - Personal e-mail: chr### [at] yahoocom
> TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
> Personal Web page: http://chrishuff.dhs.org/
> TAG Web page: http://tag.povray.org/

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Mick is back in the game! Yayyyy! :) Pretty picture.

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> Nice low sky, but the water surface ruins the picture.

I agree, but I couldn't be bothered to add a terrain for a test render.

The final pic should be some what more interesting.

Mick

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In article <39269252@news.povray.org>, "Mick Hazelgrove" 
<mha### [at] redhotantcom> wrote:

> Without knowing exactly what changes were made  from 04 to 05 I 
> really can't say in detail. Also as I don't know how the noise 
> function used to create patterns is generated I can't tell you what 
> parameters I would like to be able to control. All I can say is that 
> media clouds are now much softer and whispier than they were in 04.  
> If what was changed is now made into a variable we can control ...

The only change was modifying of the range of the noise function so it 
fits in the 0-1 range, like it is supposed to. Before, it went outside 
the range and was clipped to the 0-1 range, which caused plateus of 
solid color in pigments and flat areas in height fields, normals, and 
caused big problems in isosurfaces using noise3d().
If you don't want to use the #version flag to get the old version of 
noise, you could probably get a similar effect for pigments by using a 
section of solid color at each end of the color map, something like this:
color_map {
    [0 color StartCol]
    [0.05 color StartCol]
    ...
    [0.95 color EndCol]
    [1 color EndCol]
}

-- 
Christopher James Huff - Personal e-mail: chr### [at] yahoocom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/

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