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In this version, adding a non-zero reflection to the hexagon plane makes
the intended invisible heat-haze plane noticeable.
... The question is, why?
That part of the heat-haze plane should be completely transparent and
has only a negligible ior of 1.01. (The ior 1.01 is needed for POVRay to
have to normals modifiers take effect.)
The little chunk of code is:
light_source { <500,1000,-750> color rgb <1,1.1,1.125>}
light_source { <-25,150,50> color rgb <.5,.33,.25> shadowless}
camera
{
location <0,7.5,-30>
angle 34
look_at <0,5.75,0>
rotate -5*y
}
// a heat-haze effect
#declare HotWave=
texture {pigment {rgbf 0.97} finish{reflection 0} normal {wrinkles 0.4}
scale <0.0011,0.07,0.1>}
#declare CoolWave=
texture {pigment {rgbf 0.99} finish{reflection 0} normal {wrinkles 0.1}
scale <0.0017,0.05,0.15>}
#declare NoWave=
texture {pigment {rgbf 1} finish{reflection 0 ambient 0} normal
{wrinkles 0}}
plane {-z, 0
material {
texture {gradient y
texture_map {
[.00 NoWave]
[.02 NoWave]
[.11 HotWave]
[.23 CoolWave]
[.33 CoolWave]
[.45 NoWave]
}
scale <1,55,1>
}
interior {ior 1.01}
}
rotate 66*x
translate 7*z
translate 44*x
}
plane{
y, 0.12
texture{ hexagon
texture{
pigment{ color rgb <0.5, 0.2, 0.1> }
finish { crand 0.15 ambient .5 phong 0.7 reflection 0.27 }
},
texture{
pigment{ color rgb <0.2, 0.2, 0.5> }
finish { crand 0.00 ambient .3 phong 0.3 reflection 0.40 }
},
texture{
pigment{ color rgb 0.5 }
// A non-zero reflection value here shows the heat-haze plane!
finish { crand 0.05 ambient .50 phong 1 reflection 0.43 }
}
scale 7.99
}
}
#include "colors.inc"
#include "skies.inc"
sky_sphere {S_Cloud2}
--
----------------
Martin Lomas
mar### [at] ml1 co uk
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