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ui.gadgets.charts.[axes|demos]: add simple axis drawing

char-rename
Alexander Iljin 2017-02-04 04:21:20 +03:00 committed by John Benediktsson
parent dd3fcfdadf
commit 90087cebc1
2 changed files with 34 additions and 3 deletions
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32
extra/ui/gadgets/charts/axes/axes.factor
View File

@ -1,11 +1,39 @@
! Copyright (C) 2017 Alexander Ilin.
! See http://factorcode.org/license.txt for BSD license.
USING: accessors kernel locals ui.gadgets ui.gadgets.charts
USING: accessors arrays colors.constants kernel locals math
math.order opengl sequences ui.gadgets ui.gadgets.charts
ui.gadgets.charts.lines ui.gadgets.charts.lines.private
ui.render ;
IN: ui.gadgets.charts.axes
TUPLE: axis < gadget vertical? ;
TUPLE: axis < gadget vertical? color ;
<PRIVATE
ALIAS: x first
ALIAS: y second
: axis-pos ( min,max -- value ) 0 swap first2 clamp ;
: default-color ( default obj -- )
color>> dup [ swap ] unless gl-color drop ;
:: x-0y-chunk ( x y -- chunk ) x 0 2array x y 2array 2array ;
:: 0x-y-chunk ( x y -- chunk ) 0 y 2array x y 2array 2array ;
: flip-y ( axis-y xmax ymax -- xmax axis-y' ) rot - ;
: ?[x/y] ( ? -- quot )
[ x ] [ y ] ? [ call( a -- b ) ] curry ; inline
PRIVATE>
M: axis draw-gadget*
dup parent>> dup chart? [| axis chart |
axis vertical?>> :> vert?
chart dim>> :> dim
COLOR: black axis default-color
dim chart chart-axes vert? ?[x/y] bi@
[ axis-pos ] keep first2 swap scale
dim first2 vert? [ nip x-0y-chunk ] [ flip-y 0x-y-chunk ] if
draw-line
] [ 2drop ] if ;

5
extra/ui/gadgets/charts/demos/demos.factor
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@ -2,7 +2,8 @@
! See http://factorcode.org/license.txt for BSD license.
USING: accessors arrays colors.constants kernel literals locals
math math.constants math.functions sequences ui ui.gadgets
ui.gadgets.charts ui.gadgets.charts.lines ;
ui.gadgets.charts ui.gadgets.charts.axes ui.gadgets.charts.lines
;
IN: ui.gadgets.charts.demos
CONSTANT: -pi $[ pi neg ]
@ -23,6 +24,8 @@ CONSTANT: -pi $[ pi neg ]
chart new ${ ${ -pi pi } { -1 1 } } >>axes
line new COLOR: blue >>color n sine-wave >>data add-gadget
line new COLOR: red >>color n cosine-wave >>data add-gadget
axis new add-gadget
axis new t >>vertical? add-gadget
"Chart" open-window ;
PRIVATE>