Spiral Animation

Fractal Spiral from Alastair Montgomery on Vimeo.

Animation of a Context Free Fractal being generated.

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© Alastair Montgomery 2010

Crystal 5

Created with Context Free

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From Crystals to Spirals

Initial Design

Created with this script
startshape crystals

rule crystals {
crystal { h 81.87 sat 0.8642 b 1.0000 }
crystal { h 81.87 sat 0.8642 b 1.0000 r 90}
crystal { h 81.87 sat 0.8642 b 1.0000 r 180}
crystal { h 81.87 sat 0.8642 b 1.0000 r 270}
}

rule crystal {
blob {}
crystal {s 0.5 y 0.75}
crystal {s 0.5 x 0.75}
}

rule blob {
SQUARE {}
blob {s 0.9 b - 0.1 r 5}
}

Add an extra layer of recursion

startshape gem

rule gem{
crystals {}
gem { s 0.8 r 10 }
}

rule crystals {
crystal { h 81.87 sat 0.8642 b 1.0000 }
crystal { h 81.87 sat 0.8642 b 1.0000 r 90}
crystal { h 81.87 sat 0.8642 b 1.0000 r 180}
crystal { h 81.87 sat 0.8642 b 1.0000 r 270}
}

rule crystal {
blob {}
crystal {s 0.5 y 0.75}
crystal {s 0.5 x 0.75}
}

rule blob {
SQUARE {}
blob {s 0.9 b - 0.1 r 5}
}

Or with this change create a spiral effect

startshape gems

rule gems{
8 * {r 45} gem {}
}

rule gem{
crystals {}
gem { s 0.8 r 10 x 2.5}
}

rule crystals {
crystal { h 81.87 sat 0.8642 b 1.0000 }
crystal { h 81.87 sat 0.8642 b 1.0000 r 90}
crystal { h 81.87 sat 0.8642 b 1.0000 r 180}
crystal { h 81.87 sat 0.8642 b 1.0000 r 270}
}

rule crystal {
blob {}
crystal {s 0.5 y 0.75}
crystal {s 0.5 x 0.75}
}

rule blob {
SQUARE {}
blob {s 0.9 b - 0.1 r 5}
}

Finally add some colour and change the angle

startshape gems

rule gems{
8 * {r 45} gem {h 81.87 sat 0.8642 b 1.0000}
}

rule gem{
crystals {}
gem { s 0.8 r 25 x 2.5 h +25}
}

rule crystals {
crystal { }
crystal { r 90}
crystal { r 180}
crystal { r 270}
}

rule crystal {
blob {}
crystal {s 0.5 y 0.75}
crystal {s 0.5 x 0.75}
}

rule blob {
SQUARE {}
blob {s 0.9 b - 0.1 r 5}
}

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© Alastair Montgomery 2008

Fractal tree with spikes

Fractal tree with spikes, originally uploaded by Alastair Montgomery.

Fractal tree created in Context Free using the script below.


startshape trees

rule trees {
tree {hue =1 sat =0.8016 b =0.9502}
}

rule tree {
spike {}
tree {y 2 s 0.7 r 30 hue +5}
tree {y 2 s 0.7 r -30 hue +5}
}

rule spike {
point {}
}

rule point {
CIRCLE {}
point { y 0.1 s 0.96 sat -0.005 }
}


Context Free Spikes

More context free art




Here is the script, just change the "r -40" to "r 40" to generate the other image.


startshape spin2

rule spin2 {
spin {}
spin2 { r -40 x 1.5 y 1 s 0.9}
}

rule spin {
spikes {}
}

rule spikes { spike {hue =1 sat =0.8016 b =0.9502} }

rule spike { point { } spike { r 10 s 0.95 hue +1 } }

rule point { CIRCLE{} point { y 0.1 s 0.96 sat -0.005 }}


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© Alastair Montgomery 2008

Context free tree edit

Context free tree edit, originally uploaded by Alastair Montgomery.

Created with Context Free and edited in the Gimp

Script used to create this below.

startshape forest

rule forest {

4 * {r 90} trees {}

}

rule trees {

tree {}

trees {x+2.6 y+1 s 0.75 r 30}

}

rule tree {

branch_right{}

branch_right{rotate 180}

}

rule branch_right {

branch_right{x 0.5 y 0.5 size 0.6 r -45}

branch_left{x -0.5 y 0.5 size 0.6 r 45}

blob{}

}

rule branch_left {

branch_left{x -0.5 y 0.5 size 0.6 r 45}

branch_right{x 0.5 y 0.5 size 0.6 r -45}

blob{}

}

rule blob {

SQUARE {}

CIRCLE {size 0.99 b 1}

blob {size 0.9 b 0.25 rotate 10}

}

Context Free Fractal Trees

Context Free Fractal Tree created with the Context Free software

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My Shop at CafePress, My Shop at Zazzle Sign My Guestbook

© Alastair Montgomery 2008