A drawbot script used to proof kerns against the letter T

proof-T-kerns.drawbot.py

"""
This script requires some edits to be useful. Originally written for proofing Name Sans.

Demoed at https://www.youtube.com/watch?v=3a9KIPi_rTU

MIT License. Go ahead and use it!

Goals:
- Test `T` and `T.ultra` against basic lowercase: `TaTbTcT` etc, across full designspace, and especially around where it swaps to `T.ultra`
- Test `T` and `T.ultra` against relatively common diacritics

Usage:
- Pip Install Drawbot as a Python package
- Run this from the command line
"""

from drawBot import *
import os
import datetime

now = datetime.datetime.now().strftime("%Y_%m_%d-%H_%M")
date = datetime.datetime.now().strftime("%Y-%m-%d")

fontPath = "fonts/ArrowType-NameSans-v011/desktop/AT-NameSansVariable.ttf"
outputDir = "proofs/2023_07_17-drawbot-T-kerns"
filename = "name_sans-T-kerns-proof"

autoOpen = True
pageSize = "Letter"
border = 20

# first, make permutation strings

charsToTestBasic = "abcdefghijklmnopqrstuvwxyz"
charsToTestDiacritics = "onüäáừöéổíóújạcâôëỷưzlāōřêấỉựửèxýõốbàēậěėıšøứăæếìūầòîùỵīkớåĩnǎûmgfịảtłųỳộắőęềpụąờãd"
# charsToTestDiacritics = "horeaiuwysüäáừöéổívŷəóújạcâôëỷưzlāōřêấỉựửèxýõốbàēậěėıšøứăæếìūầòîȟùỵīkớåĩnǎûmgfịŵảtłųỳǝɛɔǜộắőęềpụąờãd"

# charsToTest = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
# charsToTest = "0123456789"

def outputCharsToTest(charsToTest, separator="T"):
    return separator + separator.join([c for c in charsToTest]) + separator


print(outputCharsToTest(charsToTestDiacritics))

fontSizes = [24,12]
italSteps = [0, 1]
# opszSteps = [8, 72]
opszSteps = [72]
wghtSteps = [100, 400, 700, 750, 800, 850, 875, 900, 925, 950, 1000]
# wghtSteps = [number for number in range(1,1001) if number % 50 == 0]

# go through permutations of stops
for italVal in italSteps:
    for opszVal in opszSteps:
        for wghtVal in wghtSteps:
            newPage(pageSize)

            font("AT Name Mono 230717k", 8)

            # header with style info
            textBox(f"Name Sans, v0.11 → opsz: {opszVal}, wght {wghtVal}, ital: {italVal} | {date}", (border, height()-border-18, width() - border*2, 24))

            # create text
            txt = FormattedString(
                font=fontPath,
            )
            # txt.openTypeFeatures(rvrn=False) # DrawBot doesn’t appear to turn off rvrn

            # set variable location
            txt.fontVariations(ital=italVal, opsz=opszVal, wght=wghtVal)
            for fontSizeVal in fontSizes:
                txt.fontSize(fontSizeVal)
                txt.lineHeight(fontSizeVal*1.5)
                # set test string
                txt.append(outputCharsToTest(charsToTestBasic))
                # turn on simplified y, g, a
                txt.openTypeFeatures(ss12=True, ss07=True, ss09=True)
                txt.append(outputCharsToTest("yga"))
                # test g.text
                txt.openTypeFeatures(ss08=True)
                txt.append(outputCharsToTest("g"))
                txt.append("\n")
                txt.openTypeFeatures(ss12=False, ss07=True, ss08=False, ss09=False)
                txt.append(outputCharsToTest(charsToTestDiacritics))
                txt.append("\n")
                txt.append(outputCharsToTest(charsToTestBasic.upper()))
                txt.append("\n\n")

            # draw text
            txt = textBox(txt, (border, border, width() - border*2, height() - border*2 - border))

            



# while txt:
#     newPage(pageSize)

#     txt = textBox(txt, (border, border, width() - border*2, height() - border*2))

if not os.path.exists(outputDir):
    os.makedirs(outputDir)



saveTo=f"{outputDir}/{filename}-{now}.pdf"
saveImage(saveTo)

if autoOpen:
    os.system(f"open -a Preview {saveTo}")