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give your pigment declaration half the filter or transmit value and step up the
emission
value to desired color ... this gave the tree a odd looking circular shape at the
bottom but
the media wont change color w/ background and gives it more of a solid feel...
happy new year...
Josh Franklin wrote:
> While I was finally teaching myself how to actually use media, I found a
> neat application for it: fast, easy, trees. This code makes a simple
> evergreen tree...the only problem is that the green is not quite solid enough...
>
> #declare tree =
> union {
> cone {
> < 0, 0, 0 >, .3,
> < 0, 3, 0 >, .1
> texture {
> pigment { color rgb < 0.7, 0.7, 0.3 > }
> }
> }
> cone {
> < 0, 1.2, 0 >, 1.1,
> < 0, 4.2, 0 >, 0.05
> texture {
> pigment { color rgbf 1.0 }
> }
> interior {
> media {
> emission < 0.25, .75, 0.2 >*1.5
> absorption < 0.75, 0, 0.8 >
> intervals 20
> samples 1, 10
> confidence 0.9999
> variance 1/1000
> density {
> cylindrical
> poly_wave pi
> turbulence 0.8
> omega 2
> lambda 0.8
> octaves 0.9
> color_map {
> [ 0.0 color rgbf < 0.0, 0.0, 0.0,
0.5 > ]
> [ 0.02 color rgbf < 0.0, 0.0, 0.0,
1.0 > ]
> [ 0.1 color rgb < 0.09, 0.3, 0.1 > ]
> [ 0.96 color rgb < 0.03, 0.2, 0.0 >
]
> [ 0.99 color rgbf < 0.0, 0.2, 0.0 >
]
> [ 1.0 color rgbf 1.0 ]
> }
> scale < 0.25, .008, 0.25 >
> }
> scale < 5, .8, 5 >
> }
> }
> hollow
> }
> }
>
> by changing the last two values of scale, you can modify the density of
> the "branches"...with a little imagination I'm sure that trees with
> multi-colored leaves or even leaves that change color over time as in an
> animation would be easy to do...also this could make for interesting
> shrub animals
>
> anyways, any input you could give me would be great ( and yes I know
> that the trunk has no texture )
>
> -Josh
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