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getcvt.ff
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getcvt.ff
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#!/usr/bin/env fontforge
/* Copyright (C) 2008 Andrey V. Panov
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*
* This script measures some chracteristic lengthes and generates control
* values for xgridfit
*
* Usage: [fontforge -script] getcvt.ff fontfile
*
*/
fontname=$1
Open(fontname)
italic_angle=100*$italicangle
pi=4.0*ATan2(1.0,1.0)
#tan_it = 1.0*Tan(italic_angle/100.0*pi/180.0)
tan_it = 1.0*Tan($italicangle*pi/180.0)
cvt = ' <control-value name="'
val = '" value="'
end = '"/>'
Select("H")
bbox = GlyphInfo("BBox")
X_height = Round(bbox[3])
Print(cvt + "cap-x-height" + val, X_height, end)
baseheight = X_height/10
x_max = GlyphInfo("Xextrema", baseheight)
H_space = (x_max[1] - x_max[0])
Print(cvt + "cap-h-space" + val, H_space, end)
Print(cvt + "cap-h-lbearing" + val, Round(x_max[0] + baseheight * tan_it), end)
y_max = GlyphInfo("Yextrema", Round((bbox[0] + bbox[2])/2.0))
Print(cvt + "cap-h-intersect-height" + val, (y_max[0]), end)
Select("O")
bbox = GlyphInfo("BBox")
O_height = Round(bbox[3])
Print(cvt + "cap-o-height" + val, O_height, end)
O_base = Round(bbox[1])
Print(cvt + "cap-o-baseline" + val, O_base, end)
Print(cvt + "cap-o-space" + val, Round(bbox[2] - bbox[0]), end)
Print(cvt + "cap-o-lbearing" + val, Round(bbox[0]), end) #- (O_height + O_base) * 0.5 * tan_it
Select("T")
x_max = GlyphInfo("Xextrema", baseheight)
temp = x_max[0]
V_stem = (x_max[1] - x_max[0])
Print(cvt + "cap-vert-stem" + val, V_stem, end)
x_max = GlyphInfo("Xextrema", X_height)
Print(cvt + "cap-t-lbearing" + val, x_max[0], end) # ??? it
Print(cvt + "cap-t-horiz-stem" + val, Round(temp - x_max[0] + (baseheight - X_height) * tan_it), end)
Select("Tse")
bbox = GlyphInfo("BBox")
y_max = GlyphInfo("Yextrema", Round(H_space * 0.9 - V_stem))
H_stem = (y_max[1] - y_max[0])
Print(cvt + "cap-horiz-stem" + val, H_stem, end)
Print(cvt + "cap-tse-desc" + val, bbox[1], end)
x_max = GlyphInfo("Xextrema", X_height/2)
if (tan_it == 0)
Print(cvt + "cap-tse-desc-horiz-shift" + val, Round(bbox[2] - x_max[1]), end)
else
temp = x_max[1]
x_max = GlyphInfo("Xextrema", Round(bbox[1]))
Print(cvt + "cap-tse-desc-horiz-shift" + val, Round(x_max[1] - temp + (bbox[1] - X_height/2.0) * tan_it), end) # could be incorrect if descenter has slanted edges
endif
x_max = GlyphInfo("Xextrema", Round(bbox[1]/2.0))
V_thinstem = (x_max[1] - x_max[0])
Print(cvt + "cap-vert-thinstem" + val, V_thinstem, end)
Select("C")
bbox = GlyphInfo("BBox")
x_max = GlyphInfo("Xextrema", Round(bbox[0]))
Print(cvt + "cap-o-curve-stem" + val, x_max[0], end)
Select("Ze")
bbox = GlyphInfo("BBox")
Print(cvt + "cap-cyrz-lbearing" + val, Round(bbox[0]), end)
Select("A")
bbox = GlyphInfo("BBox")
y_max = GlyphInfo("Yextrema", Round((bbox[2] - bbox[0])/2))
Print(cvt + "cap-a-hstem-height" + val, y_max[0], end)
Select("M")
x_max = GlyphInfo("Xextrema", baseheight)
Print(cvt + "cap-m-space" + val, (x_max[1] - x_max[0]), end)
Select("N")
x_max = GlyphInfo("Xextrema", baseheight)
Print(cvt + "cap-n-space" + val, (x_max[1] - x_max[0]), end)
Select("U")
x_max = GlyphInfo("Xextrema", X_height - baseheight)
Print(cvt + "cap-u-space" + val, (x_max[1] - x_max[0]), end)
Select("I.cyr")
x_max = GlyphInfo("Xextrema", baseheight)
Print(cvt + "cap-cyri-space" + val, (x_max[1] - x_max[0]), end)
Select("El")
x_max = GlyphInfo("Xextrema", X_height - baseheight)
Print(cvt + "cap-cyrl-space" + val, (x_max[1] - x_max[0]), end)
Select("Che")
x_max = GlyphInfo("Xextrema", X_height - baseheight)
Print(cvt + "cap-cyrch-space" + val, (x_max[1] - x_max[0]), end)
Select("Soft")
bbox = GlyphInfo("BBox")
Print(cvt + "cap-b-low-space" + val, Round(bbox[2] - bbox[0]), end)
Select("Sha")
x_max = GlyphInfo("Xextrema", baseheight)
Print(cvt + "cap-sh-inner-space" + val, Round((x_max[1] - x_max[0] - 3*V_stem)*0.5), end)
Select("one")
x_max = GlyphInfo("Xextrema", X_height/2)
Print(cvt + "digit-vert-stem" + val, (x_max[1] - x_max[0]), end)
Select("zero")
bbox = GlyphInfo("BBox")
Print(cvt + "digit-over-height" + val, Round(bbox[3]), end)
Select("five")
bbox = GlyphInfo("BBox")
Print(cvt + "digit-height" + val, Round(bbox[3]), end)
Select("six")
bbox = GlyphInfo("BBox")
Print(cvt + "digit-six-hspace" + val, Round(bbox[2] - bbox[0]), end) # non-it
Select("seven")
bbox = GlyphInfo("BBox")
x_max = GlyphInfo("Yextrema", Round(bbox[0]))
y_max = GlyphInfo("Yextrema", Round(bbox[2]))
Print(cvt + "digit-mid-horiz-stem" + val, (y_max[1] - x_max[0]), end)
Select("en")
bbox = GlyphInfo("BBox")
x_height = Round(bbox[3])
Print(cvt + "small-x-height" + val, x_height, end)
baseheight = x_height/10
x_max = GlyphInfo("Xextrema", baseheight)
h_space = (x_max[1] - x_max[0])
Print(cvt + "small-cyrn-space" + val, h_space, end)
Print(cvt + "small-cyrn-lbearing" + val, Round(x_max[0] + baseheight * tan_it), end)
y_max = GlyphInfo("Yextrema", Round((bbox[0] + bbox[2])/2.0))
Print(cvt + "small-cyrn-intersect-height" + val, (y_max[0]), end)
Select("o")
bbox = GlyphInfo("BBox")
o_height = Round(bbox[3])
Print(cvt + "small-o-height" + val, o_height, end)
o_base = Round(bbox[1])
Print(cvt + "small-o-baseline" + val, o_base, end)
Print(cvt + "small-o-space" + val, Round(bbox[2] - bbox[0]), end)
Print(cvt + "small-o-lbearing" + val, Round(bbox[0]), end) #- (o_height + o_base) * 0.5 * tan_it
if (tan_it == 0)
Select("te")
x_max = GlyphInfo("Xextrema", baseheight)
temp = x_max[0]
v_stem = (x_max[1] - x_max[0])
Print(cvt + "small-vert-stem" + val, v_stem, end)
x_max = GlyphInfo("Xextrema", x_height)
Print(cvt + "small-cyrt-lbearing" + val, x_max[0], end) # ??? it
Print(cvt + "small-cyrt-horiz-stem" + val, Round(temp - x_max[0] + (baseheight - x_height) * tan_it), end) # extra?
else
Select("l")
x_max = GlyphInfo("Xextrema", baseheight)
v_stem = (x_max[1] - x_max[0])
Print(cvt + "small-vert-stem" + val, v_stem, end)
endif
Select("tse")
bbox = GlyphInfo("BBox")
y_max = GlyphInfo("Yextrema", Round(h_space * 0.9 - v_stem))
h_stem = (y_max[1] - y_max[0])
Print(cvt + "small-horiz-stem" + val, h_stem, end)
Print(cvt + "small-tse-desc" + val, bbox[1], end)
x_max = GlyphInfo("Xextrema", x_height/2)
if (tan_it == 0)
Print(cvt + "small-tse-desc-horiz-shift" + val, Round(bbox[2] - x_max[1]), end)
else
temp = x_max[1]
x_max = GlyphInfo("Xextrema", Round(bbox[1]))
Print(cvt + "small-tse-desc-horiz-shift" + val, Round(x_max[1] - temp + (bbox[1] - x_height/2) * tan_it), end) # could be incorrect if descenter has slanted edges
endif
x_max = GlyphInfo("Xextrema", Round(bbox[1]/2.0))
v_thinstem = (x_max[1] - x_max[0])
Print(cvt + "small-vert-thinstem" + val, v_thinstem, end)
Select("c")
bbox = GlyphInfo("BBox")
x_max = GlyphInfo("Xextrema", Round(bbox[0]))
Print(cvt + "small-o-curve-stem" + val, x_max[0], end)
Select("h")
bbox = GlyphInfo("BBox")
h_height = Round(bbox[3])
Print(cvt + "small-asc-height" + val, h_height, end)
Select("p")
bbox = GlyphInfo("BBox")
p_depth = Round(bbox[1])
Print(cvt + "small-desc" + val, p_depth, end)
Print(cvt + "small-p-space" + val, Round(bbox[2] - bbox[0] - p_depth * tan_it), end)
Select("ze")
bbox = GlyphInfo("BBox")
Print(cvt + "small-cyrz-lbearing" + val, Round(bbox[0]), end)
Select("a")
bbox = GlyphInfo("BBox")
x_max = GlyphInfo("Xextrema", x_height/2)
Print(cvt + "small-a-space" + val, Round(x_max[1] + x_height/2 * tan_it - bbox[0]), end)
Select("n")
x_max = GlyphInfo("Xextrema", baseheight)
Print(cvt + "small-n-space" + val, (x_max[1] - x_max[0]), end)
Select("u")
x_max = GlyphInfo("Xextrema", x_height - baseheight)
Print(cvt + "small-u-space" + val, (x_max[1] - x_max[0]), end)
Select("i.cyr")
x_max = GlyphInfo("Xextrema", baseheight)
Print(cvt + "small-cyri-space" + val, (x_max[1] - x_max[0]), end)
Select("el")
x_max = GlyphInfo("Xextrema", x_height - baseheight)
Print(cvt + "small-cyrl-space" + val, (x_max[1] - x_max[0]), end) # it may be incorrect
Select("em")
x_max = GlyphInfo("Xextrema", baseheight)
Print(cvt + "small-cyrm-space" + val, (x_max[1] - x_max[0]), end)
Select("che")
x_max = GlyphInfo("Xextrema", x_height - baseheight)
Print(cvt + "small-cyrch-space" + val, (x_max[1] - x_max[0]), end)
Select("soft")
bbox = GlyphInfo("BBox")
Print(cvt + "small-cyrv-low-space" + val, Round(bbox[2] - bbox[0]), end)
Select("m")
x_max = GlyphInfo("Xextrema", baseheight)
Print(cvt + "small-m-inner-space" + val, Round((x_max[1] - x_max[0] - 3*v_stem)*0.5), end)
Select("plus")
bbox = GlyphInfo("BBox")
temp = Round(bbox[2] - bbox[0])
y_max = GlyphInfo("Yextrema", Round(bbox[0]))
x_max = GlyphInfo("Xextrema", y_max[0])
y_max = GlyphInfo("Yextrema", Round(bbox[0] + temp/4))
Print(cvt + "minus-lbearing" + val, Round(bbox[0]), end)
Print(cvt + "minus-width" + val, (x_max[1] - x_max[0]), end)
Print(cvt + "minus-thickness" + val, (y_max[1] - y_max[0]), end)
Select("bar")
bbox = GlyphInfo("BBox")
Print(cvt + "bar-height" + val, Round(bbox[3]), end)
Print(cvt + "bar-depth" + val, Round(bbox[1]), end)
Select("parenleft")
bbox = GlyphInfo("BBox")
y_max = GlyphInfo("Yextrema", Round(bbox[0]))
x_max = GlyphInfo("Xextrema", y_max[0])
Print(cvt + "paren-curve-stem" + val, (x_max[1] - x_max[0]), end)
Select("period")
bbox = GlyphInfo("BBox")
y_max = GlyphInfo("Yextrema", Round(bbox[0]))
x_max = GlyphInfo("Xextrema", y_max[0])
temp = (x_max[1] - x_max[0])
Print(cvt + "period-lbearing" + val, Round(bbox[0]), end)
Print(cvt + "period-width" + val, temp, end) # incorrect for italic curve period
Select("comma")
bbox = GlyphInfo("BBox")
Print(cvt + "comma-width" + val, Round(bbox[2] - bbox[0]), end)
Print(cvt + "comma-width" + val, (x_max[1] - x_max[0]), end) # for square slanted comma
Print(cvt + "comma-depth" + val, Round(bbox[1]), end)
x_max = GlyphInfo("Xextrema", temp/2)
Select("dotaccent")
bbox = GlyphInfo("BBox")
y_max = GlyphInfo("Yextrema", Round(bbox[0]))
x_max = GlyphInfo("Xextrema", y_max[0])
temp = (x_max[1] - x_max[0])
Print(cvt + "dot-width" + val, temp, end) # incorrect for italic curve period
Select("acute")
bbox = GlyphInfo("BBox")
Print(cvt + "acute-height" + val, Round(bbox[1]), end)
if (SelectIf("perthousandzero") > 0)
bbox = GlyphInfo("BBox")
Print(cvt + "perthousandzero-space" + val, Round(bbox[2] - bbox[0]), end)
Print(cvt + "perthousandzero-height" + val, Round(bbox[3] - bbox[1]), end)
endif