106 lines
2.7 KiB
Factor
106 lines
2.7 KiB
Factor
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USING: kernel accessors locals namespaces sequences threads
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math math.order math.vectors
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calendar
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colors opengl ui ui.gadgets ui.gestures ui.render
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circular
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processing.shapes ;
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IN: trails
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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! Example 33-15 from the Processing book
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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! Return the mouse location relative to the current gadget
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: mouse ( -- point ) hand-loc get hand-gadget get screen-loc v- ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: point-list ( n -- seq ) [ drop { 0 0 } ] map <circular> ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: percent->radius ( percent -- radius ) neg 1 + 25 * 5 max ;
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: dot ( pos percent -- ) percent->radius circle ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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TUPLE: <trails-gadget> < gadget paused points ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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:: iterate-system ( GADGET -- )
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! Add a valid point if the mouse is in the gadget
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! Otherwise, add an "invisible" point
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hand-gadget get GADGET =
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[ mouse GADGET points>> push-circular ]
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[ { -10 -10 } GADGET points>> push-circular ]
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if ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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:: start-trails-thread ( GADGET -- )
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GADGET f >>paused drop
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[
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[
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GADGET paused>>
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[ f ]
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[ GADGET iterate-system GADGET relayout-1 1 milliseconds sleep t ]
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if
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]
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loop
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]
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in-thread ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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M: <trails-gadget> pref-dim* ( <trails-gadget> -- dim ) drop { 500 500 } ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: each-percent ( seq quot -- )
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[
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dup length
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dup [ / ] curry
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[ 1+ ] prepose
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] dip compose
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2each ; inline
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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M:: <trails-gadget> draw-gadget* ( GADGET -- )
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origin get
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[
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T{ rgba f 1 1 1 0.4 } \ fill-color set ! White, with some transparency
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T{ rgba f 0 0 0 0 } \ stroke-color set ! no stroke
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black gl-clear
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GADGET points>> [ dot ] each-percent
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]
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with-translation ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: trails-gadget ( -- <trails-gadget> )
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<trails-gadget> new-gadget
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300 point-list >>points
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t >>clipped?
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dup start-trails-thread ;
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: trails-window ( -- ) [ trails-gadget "Trails" open-window ] with-ui ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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MAIN: trails-window
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