55 lines
1.5 KiB
Factor
55 lines
1.5 KiB
Factor
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USING: kernel namespaces math math.constants math.functions math.order
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arrays sequences
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opengl opengl.gl opengl.glu ui ui.render ui.gadgets ui.gadgets.theme
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ui.gadgets.cartesian colors accessors combinators.cleave
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processing.shapes ;
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IN: golden-section
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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! omega(i) = 2*pi*i*(phi-1)
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! x(i) = 0.5*i*cos(omega(i))
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! y(i) = 0.5*i*sin(omega(i))
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! radius(i) = 10*sin((pi*i)/720)
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: omega ( i -- omega ) phi 1- * 2 * pi * ;
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: x ( i -- x ) [ omega cos ] [ 0.5 * ] bi * ;
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: y ( i -- y ) [ omega sin ] [ 0.5 * ] bi * ;
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: center ( i -- point ) { x y } 1arr ;
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: radius ( i -- radius ) pi * 720 / sin 10 * ;
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: color ( i -- i ) dup 360.0 / dup 0.25 1 rgba boa >fill-color ;
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: line-width ( i -- i ) dup radius 0.5 * 1 max glLineWidth ;
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: draw ( i -- ) [ center ] [ radius 1.5 * 2 * ] bi circle ;
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: dot ( i -- ) color line-width draw ;
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: golden-section ( -- ) 720 [ dot ] each ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: <golden-section> ( -- gadget )
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<cartesian>
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{ 600 600 } >>pdim
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{ -400 400 } x-range
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{ -400 400 } y-range
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[ golden-section ] >>action ;
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: golden-section-window ( -- )
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[ <golden-section> "Golden Section" open-window ] with-ui ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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MAIN: golden-section-window
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