Alain <kua### [at] videotronca> wrote:

> > "MichaelJF" <mi-### [at] t-onlinede> wrote:
> >> "Anthony D. Baye" <Sha### [at] spamnomorehotmailcom> wrote:
> >>> So I've been working on this for several months now (off and on) and it's
> >>> nowhere near finished.
> >>>
> >>> The problem I'm having is that even with the crummy radiosity settings I used on
> >>> this render, it took several days.  The reason for this, I think, is the
> >>> combination of the lighting and the water (I know the water needs work).
> >>>
> >>> I've been experimenting with pure radiosity for lighting, but I'm having trouble
> >>> getting good illumination from flames. I've tried pumping the emission (media)
> >>> as high as 1200, but as soon as I try to add color to the flames the light all
> >>> but vanishes.
> >>>
> >>> I hadn't really wanted to show this off yet, but I need help with the lighting.
> >>>
> >>> This render uses conventional lighting but, as I said, it was slow.
> >>>
> >>> Regards,
> >>> A.D.B.
> >>
> >> The hole debate here is only about theory. Can you post the source code? Most
> >> likely I'm not the one to spot the difficulties but others may be able to do so.
> >>
> >> Best regards,
> >> Michael
> >
> > First of all, the original question was about theory.  Secondly, I'm not asking
> > for help fixing code: I'm using a water material (slightly modified) that was
> > provided in a previous thread, if that doesn't work right nothing will.
> >
> > The problem is most likely due to six overlapping light boxes, plus water which
> > has been said to be slow under ideal conditions.  The only viable option I can
> > think of is to get rid of the point lights entirely and switch to some sort of
> > radiant lighting, which is what the question was actually about.
> >
> > so, to reiterate, does anybody have a good way to make luminous flames without
> > point lights?
> >
> > Regards,
> > A.D.B.
> >
>
> Object with a high emission component in the finish.
> Object filled with some emissive media. Need to add hollow to that object.
>
> Using media, you need to use some pattern to modulate the emission. Some
> that can be usefull:
> spherical (usualy with some turbulence)
> bumps (normaly with uneven scalling, also with some turbulence)
> Other patterns can be used creatively.
>
> The media container will normaly be fully transparent, but that's not
> obligatory, it just need to be mostly transparent.
>
>
>
> Alain

I have tried all of these things.  The media gives good results as long as I
don't care if it's pure white... The problem of course is that the parts that
affect the radiosity will be well beyond the white-point and any attempt to add
color reduces their brightness to such a degree that they no longer have the
desired effect.

Regards,
A.D.B.

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