I've been working on this Star Wars ship, and want to use it in an
animation.  For the engine glow, I've been using a rack of light_source.
The problem is, not only does it slow the trace down to a crawl, it
doesn't even look right.  So:  Is there a way I can get a nice blazing
blue-white engine flame for this ship?

Post a reply to this message

Attachments:
Download 'angel.jpg' (42 KB)

Preview of image 'angel.jpg'

"Tailkinker" <gro### [at] yahoocouk> wrote in message
news:3ddce1d3@news.povray.org...
> I've been working on this Star Wars ship, and want to use it in an
> animation.  For the engine glow, I've been using a rack of light_source.
> The problem is, not only does it slow the trace down to a crawl, it
> doesn't even look right.  So:  Is there a way I can get a nice blazing
> blue-white engine flame for this ship?
>

Some emitting media? You might want to add a light as well to the media to
illuminate the near-by bits of ship.

basic example:

#version 3.5;

#include "colors.inc"

global_settings {
  assumed_gamma 1.0
}

// ----------------------------------------

camera {
  location  <0.0, 0.5, -4.0>
  look_at   <0.0, 0.0,  0.0>
}

// ----------------------------------------

#declare BasicShip =
union{
  box{
    0,1
    translate -0.5
  }

  difference{
    cylinder{
      0,x*1,0.25
    }
    cylinder{
      0,x*1.1,0.2
    }
  }
  sphere{
    0,0.2
    pigment{rgbf 1}
    interior{
      media{
        method 3
        emission rgb 1
        density{
          spherical
          turbulence 0.05
          scale 0.2
          density_map{
            [0 rgb 0]
            [0.5 rgb <0,0,2>]
            [1 rgb 5]
          }
        }
      }
    }
    hollow
    scale<4,1,1>
    translate x*1
  }
  light_source{
    0
    rgb<0,0,0.5>
    translate x*1.5
  }
  pigment{Gray}
}

object{
  BasicShip
  rotate y*45
}

Post a reply to this message

Attachments:
Download 'xwing.jpg' (4 KB)

Preview of image 'xwing.jpg'

"Tom Melly" <tom### [at] tomandlucouk> wrote in message
news:3ddceee9$1@news.povray.org...
>
> "Tailkinker" <gro### [at] yahoocouk> wrote in message
> news:3ddce1d3@news.povray.org...
> > I've been working on this Star Wars ship, and want to use it in an
> > animation.  For the engine glow, I've been using a rack of light_source.
> > The problem is, not only does it slow the trace down to a crawl, it
> > doesn't even look right.  So:  Is there a way I can get a nice blazing
> > blue-white engine flame for this ship?
> >
>
> Some emitting media? You might want to add a light as well to the media to
> illuminate the near-by bits of ship.


    I got some good results using H.E. Day's method of putting a glow-like
image under the flame on the ship. Puts good light where you want it without
slowing down the rendering of objects that you can't even see the light on.

Post a reply to this message

And here it is, in living colour:

Post a reply to this message

Attachments:
Download 'angel.jpg' (45 KB)

Preview of image 'angel.jpg'

Where is H.E. anyway? I realize POV is not the end all and be all in life,
but I miss his work.

-paul



"Bill DeWitt" <bde### [at] cflrrcom> wrote in message
news:3ddcf9c2$1@news.povray.org...
>
> "Tom Melly" <tom### [at] tomandlucouk> wrote in message
> news:3ddceee9$1@news.povray.org...
> >
> > "Tailkinker" <gro### [at] yahoocouk> wrote in message
> > news:3ddce1d3@news.povray.org...
> > > I've been working on this Star Wars ship, and want to use it in an
> > > animation.  For the engine glow, I've been using a rack of
light_source.
> > > The problem is, not only does it slow the trace down to a crawl, it
> > > doesn't even look right.  So:  Is there a way I can get a nice blazing
> > > blue-white engine flame for this ship?
> > >
> >
> > Some emitting media? You might want to add a light as well to the media
to
> > illuminate the near-by bits of ship.
>
>
>     I got some good results using H.E. Day's method of putting a glow-like
> image under the flame on the ship. Puts good light where you want it
without
> slowing down the rendering of objects that you can't even see the light
on.
>
>

Post a reply to this message

Tailkinker <gro### [at] yahoocouk> wrote in news:3ddce1d3@news.povray.org

> I've been working on this Star Wars ship, and want to use it in an
> animation.  For the engine glow, I've been using a rack of light_source.
> The problem is, not only does it slow the trace down to a crawl, it
> doesn't even look right.  So:  Is there a way I can get a nice blazing
> blue-white engine flame for this ship?

1) Emiting media
2) Emiting media + light to simulate radiosity, as Tom said
3) Emiting media + radiosity

3-rd option is probably the best 


-- 
#macro g(U,V)(.4*abs(sin(9*sqrt(pow(x-U,2)+pow(y-V,2))))*pow(1-min(1,(sqrt(
pow(x-U,2)+pow(y-V,2))*.3)),2)+.9)#end#macro p(c)#if(c>1)#local l=mod(c,100
);g(2*div(l,10)-8,2*mod(l,10)-8)*p(div(c,100))#else 1#end#end light_source{
y 2}sphere{z*20 9pigment{function{p(26252423)*p(36455644)*p(66656463)}}}//M

Post a reply to this message

On Thu, 21 Nov 2002 12:17:14 -0500, "paul jones" <pdj### [at] psuedu> wrote:
> Where is H.E. anyway?

http://heday.povray.co.uk/

ABX

Post a reply to this message