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Fixed may-incorrect stroke position correction in xsStrand

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This commit is contained in:
be5invis 2015-08-14 10:21:41 +08:00
parent d3597a08e2
commit 12e010ab29
2 changed files with 14 additions and 5 deletions
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6
buildglyphs.patel
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@ -65,11 +65,11 @@ define [buildFont para recursive] : begin {
local parenMid [mix parenTop parenBot 0.5]
# Transform constructors
define [Italify angle] : begin {
define [Italify angle shift] : begin {
local slope [Math.tan [[fallback angle para.italicangle] / 180 * Math.PI]]
return (.xx 1 .yx slope .xy 0 .yy 1 .x [-slope * parenMid] .y 0)
return (.xx 1 .yx slope .xy 0 .yy 1 .x [fallback shift : -slope * parenMid] .y 0)
}
define [Upright angle] [inverse : Italify angle]
define [Upright angle shift] [inverse : Italify angle shift]
define [Scale sx sy] (.xx sx .yx 0 .xy 0 .yy [fallback sy sx] .x 0 .y 0)
define [Translate x y] (.xx 1 .yx 0 .xy 0 .yy 1 .x x .y y)
define [Rotate angle] (.xx [Math.cos angle] .yx [-[Math.sin angle]] .xy [Math.sin angle] .yy [Math.cos angle] .x 0 .y 0)

13
glyphs/common-shapes.patel
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@ -92,8 +92,17 @@ define [xsStrand _xleft yleft _xright yright _halfstroke0 _halfstroke1 _ess _exp
local halfstroke0 : _halfstroke0 || HALFSTROKE
local halfstroke1 : _halfstroke1 || HALFSTROKE
local ess : _ess || [halfstroke0 + halfstroke1] / 2
local yItalicCorrection [globalTransform.yx * 0.985]
local xItalicCorrection : 1 / [Math.sqrt [1 - yItalicCorrection * yItalicCorrection]]
local upright : Upright
# calculate italic correction
local outline : [new Stroke
:.set-transform globalTransform
:.start-from _xleft yleft
:.set-width [2 * halfstroke0] 0
:.line-to _xleft [yleft - 1000]
:.set-samples 1
:.to-outline].0.map : [p] -> [tp upright p]
local xItalicCorrection : -[outline.3.x - outline.0.x] / [2 * halfstroke0]
local yItalicCorrection : [outline.3.y - outline.0.y] / [2 * halfstroke0]
local roundsize : [_roundp || SMOOTHA * 0.4] * [if [yleft < yright] [-1] 1]
local roundleft [yleft - roundsize]