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Hi,
Any idea where I'm going wrong with this fade in? I want the CGL_band to be
transparent then fade in gradually with each animated shot. Ive got it to fade
to the gray un-textured solid, or Ive got it to fade into the texture from a
black silhouette but cant figure out how to fade in the whole thing from
transparent to fully visible...
Here is the code and the "CGL_solid.inc" is attached
#declare Sandy = color rgbt <1, .9, .35>;
#declare Transmit = .8;
#declare CM_Sandstone =
colour_map{
[0.3 rgbt <1, 1, 1, 1.2*Transmit*(clock)>]
[0.4 rgbt <1, 0, 0, Transmit*(clock)>]
[0.41 rgbt <0.5, 0.3, 0.1, .5*Transmit*(clock)>]
[0.42 rgbt <1, 0, 0, .75*Transmit*(clock)>]
[0.6 rgbt <1, 0.5, 0, Transmit*(clock)>]
[0.7 rgbt <1, 1, 1, .5*Transmit*(clock)>]
}
#declare FSandstone =
finish{
diffuse 0.35 ambient 0.05
}
#declare TSandstone =
texture{
pigment {Sandy
turbulence 0.99}
finish{FSandstone}
normal {granite 5 scale 500}
}
#declare TStain = texture{
pigment{
//agate
gradient <.3, 2, .1>//2
turbulence 0.15
colour_map{CM_Sandstone}
scale 1000
}
finish{FSandstone}
}
#declare TSandstone1 =
texture{TSandstone}
texture{TStain}
//*********************************************
//
// Include the solid from an external file
//
//*********************************************
#include "CGL_solid.inc"
object {CGLband
texture {TSandstone1}
translate <-723750,-422.035,-9092750>}
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Download 'cgl_solid.inc.txt' (99 KB)
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> Hi,
>
> Any idea where I'm going wrong with this fade in? I want the CGL_band to be
> transparent then fade in gradually with each animated shot. Ive got it to fade
> to the gray un-textured solid, or Ive got it to fade into the texture from a
> black silhouette but cant figure out how to fade in the whole thing from
> transparent to fully visible...
>
> Here is the code and the "CGL_solid.inc" is attached
>
> #declare Sandy = color rgbt <1, .9, .35>;
>
> #declare Transmit = .8;
> #declare CM_Sandstone =
>
> colour_map{
> [0.3 rgbt <1, 1, 1, 1.2*Transmit*(clock)>]
> [0.4 rgbt <1, 0, 0, Transmit*(clock)>]
> [0.41 rgbt <0.5, 0.3, 0.1, .5*Transmit*(clock)>]
> [0.42 rgbt <1, 0, 0, .75*Transmit*(clock)>]
> [0.6 rgbt <1, 0.5, 0, Transmit*(clock)>]
> [0.7 rgbt <1, 1, 1, .5*Transmit*(clock)>]
>
>
> }
>
You want everything to have transmit 1 when clock reatch the value of 1.
In your actual code, this can NEVER appen. At most, it tops at 0.96 for
the first entry of your colour_map, and as low as 0.4 in the worst case.
0.9, 0.35, 0>
You need your transmit to go from zero to one, or from one to zero.
This may work beter for a fade out:
colour_map{
[0.3 rgbt <1, 1, 1, clock>]
[0.4 rgbt <1, 0, 0, clock>]
[0.41 rgbt <0.5, 0.3, 0.1, clock>]
[0.42 rgbt <1, 0, 0, clock>]
[0.6 rgbt <1, 0.5, 0, clock>]
[0.7 rgbt <1, 1, 1, clock>]
}
For a fade in, try this:
colour_map{
[0.3 rgbt <1, 1, 1, 1-clock>]
[0.4 rgbt <1, 0, 0, 1-clock>]
[0.41 rgbt <0.5, 0.3, 0.1, 1-clock>]
[0.42 rgbt <1, 0, 0, 1-clock>]
[0.6 rgbt <1, 0.5, 0, 1-clock>]
[0.7 rgbt <1, 1, 1, 1-clock>]
}
If any texture need to have any transmiting transparency when fully
visible, you need to restrict the range of your transmit accordingly.
Like this:
rgbt<1, 1, 1, 0.5+ 0.5*Transmit*clock>
If you have a filtering pigment, the filter need to drop to zero as the
transmit reatch one.
Sample:
rgbft<1, 0.5, 0.12, 1*(1-clock), clock>
This is the only case where you need the parantesis.
Alain
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