ui.gadgets.plot: Basic function plotter
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USING: kernel quotations arrays sequences math math.ranges fry
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opengl opengl.gl ui.render ui.gadgets.cartesian processing.shapes
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accessors ;
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IN: ui.gadgets.plot
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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TUPLE: plot < cartesian functions points ;
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: init-plot ( plot -- plot )
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init-cartesian
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{ } >>functions
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100 >>points ;
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: <plot> ( -- plot ) plot new init-plot ;
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: step-size ( plot -- step-size )
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[ [ x-max>> ] [ x-min>> ] bi - ] [ points>> ] bi / ;
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: plot-range ( plot -- range )
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[ x-min>> ] [ x-max>> ] [ step-size ] tri <range> ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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TUPLE: function function color ;
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GENERIC: plot-function ( plot object -- plot )
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M: quotation plot-function ( plot quotation -- plot )
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>r dup plot-range r> '[ dup @ 2array ] map line-strip ;
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M: function plot-function ( plot function -- plot )
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dup color>> dup [ >stroke-color ] [ drop ] if
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>r dup plot-range r> function>> '[ dup @ 2array ] map line-strip ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: plot-functions ( plot -- plot ) dup functions>> [ plot-function ] each ;
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: draw-axis ( plot -- plot )
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dup
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[ [ x-min>> ] [ drop 0 ] bi 2array ]
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[ [ x-max>> ] [ drop 0 ] bi 2array ] bi line*
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dup
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[ [ drop 0 ] [ y-min>> ] bi 2array ]
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[ [ drop 0 ] [ y-max>> ] bi 2array ] bi line* ;
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M: plot draw-gadget* ( plot -- )
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dup call-next-method
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2 glLineWidth
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draw-axis
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plot-functions
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drop
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fill-mode
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1 glLineWidth ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: add-function ( plot function -- plot )
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over functions>> swap suffix >>functions ;
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