add instances

compareInstances.py

@@ -0,0 +1,83 @@
+from AppKit import NSBezierPath
+from fontTools.ttLib import TTFont
+from fontTools.pens.cocoaPen import CocoaPen
+import string
+
+charset = string.uppercase+string.lowercase
+
+label1 = "Roboto-Light"
+label2 = "VF Instance"
+
+fontpath1 = "master_ttf_interpolatable/Roboto-Bold.ttf"
+fontpath2 = "instances/RobotoB-VF-instanceBold.ttf"
+
+ttfont1 = TTFont(fontpath1)
+ttfont2 = TTFont(fontpath2)
+
+pen1 = CocoaPen(ttfont1.getGlyphSet())
+pen2 = CocoaPen(ttfont2.getGlyphSet())
+
+color1 = (1, 0, 0, 0.5)
+color2 = (0, 0, 1, 0.5)
+
+unequalmetrics = []
+
+for char in charset:
+    pen1.path = NSBezierPath.bezierPath()
+    pen2.path = NSBezierPath.bezierPath()
+    glyph1 = pen1.glyphSet[char]
+    glyph2 = pen2.glyphSet[char]
+    glyph1.draw(pen1)
+    glyph2.draw(pen2)
+    
+    newPage(2500, 2500)
+    fill(None)
+    strokeWidth(2)
+    offsetX = 500
+    offsetY = 500
+    translate(offsetX, offsetY)
+    
+    # baseline
+    stroke(0, 0, 0, 0.25)
+    line((-offsetX, 0), (width()-offsetX, 0))
+    
+    # glyph 1
+    stroke(*color1)
+    drawPath(pen1.path)
+    line((0, -offsetY), (0, height()-offsetY))
+    line((glyph1.width, -offsetY), (glyph1.width, 2000))
+    
+    # glyph 2
+    stroke(*color2)
+    drawPath(pen2.path)
+    line((0, -offsetY), (0, height()-offsetY))
+    line((glyph2.width, -offsetY), (glyph2.width, 2000))
+    
+    stroke(None)
+    fontSize(36)
+
+    fill(0, 0, 0, 0.5)
+    text("width", (-offsetX+50, -100))    
+    
+    fill(*color1)
+    text(label1, (-offsetX+50, height()-offsetY-100))
+    text(str(glyph1.width), (-offsetX+50, -150))
+
+    fill(*color2)
+    text(label2, (-offsetX+50, height()-offsetY-150))
+    text(str(glyph2.width), (-offsetX+50, -200))
+    
+    metricsdiff = glyph2.width - glyph1.width
+    if metricsdiff != 0:
+        unequalmetrics.append((char, metricsdiff))
+
+newPage(2000, 2000)
+fs = FormattedString(fontSize=30, font="Menlo")
+for c, m in unequalmetrics:
+    t = "%s %s\n" % (c, m)
+    fs.append(t)
+textBox(fs, (50, 0, width()-100, height()-50))
+
+saveImage(["compareInstances-Bold.pdf"])
+
+

instantiate.sh

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+#fontTools varLib.mutator fonts/RobotoB-VF.ttf wght=-0.55 # Light
+#fontTools varLib.mutator fonts/RobotoB-VF.ttf wght=0.35 # Medium
+fontTools varLib.mutator fonts/RobotoB-VF.ttf wght=0.73 # Bold