From 6db322ae5cc652ef96b5c2bc6f6adbfd01fd7db5 Mon Sep 17 00:00:00 2001
From: Peter Evans <pevans@activecampaign.com>
Date: Tue, 19 Dec 2017 15:28:42 -0600
Subject: [PATCH] I wrote a tool to build fonts from grid files.
This commit also adds the first such output, which is the apple II
system font.
---
fonts/apple2-system.png | Bin 0 -> 1067 bytes
tools/build-fonts | 162 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 162 insertions(+)
create mode 100644 fonts/apple2-system.png
create mode 100755 tools/build-fonts
diff --git a/fonts/apple2-system.png b/fonts/apple2-system.png
new file mode 100644
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diff --git a/tools/build-fonts b/tools/build-fonts
new file mode 100755
index 0000000..ace2b02
--- /dev/null
+++ b/tools/build-fonts
@@ -0,0 +1,162 @@
+#!/usr/bin/env python2
+
+import os
+from PIL import Image
+
+glyphmap = {
+ "ampersand": "&",
+ "apostrophe": "'",
+ "asterisk": "*",
+ "at": "@",
+ "backslash": "\\",
+ "bar": "|",
+ "blank": " ",
+ "caret": "^",
+ "colon": ":",
+ "comma": ",",
+ "dollar": "$",
+ "emark": "!",
+ "equal": "=",
+ "grave": "`",
+ "hyphen": "-",
+ "langle": "<",
+ "lbrace": "{",
+ "lbracket": "[",
+ "lparen": "(",
+ "percent": "%",
+ "perfcurs": 10,
+ "period": ".",
+ "plus": "+",
+ "pound": "#",
+ "qmark": "?",
+ "quote": '"',
+ "rangle": ">",
+ "rbrace": "}",
+ "rbracket": "]",
+ "rparen": ")",
+ "semicolon": ";",
+ "slash": "/",
+ "tilde": "~",
+ "underscore": "_",
+ "0": "0",
+ "1": "1",
+ "2": "2",
+ "3": "3",
+ "4": "4",
+ "5": "5",
+ "6": "6",
+ "7": "7",
+ "8": "8",
+ "9": "9",
+ "al": "a",
+ "bl": "b",
+ "cl": "c",
+ "dl": "d",
+ "el": "e",
+ "fl": "f",
+ "gl": "g",
+ "hl": "h",
+ "il": "i",
+ "jl": "j",
+ "kl": "k",
+ "ll": "l",
+ "ml": "m",
+ "nl": "n",
+ "ol": "o",
+ "pl": "p",
+ "ql": "q",
+ "rl": "r",
+ "sl": "s",
+ "tl": "t",
+ "ul": "u",
+ "vl": "v",
+ "wl": "w",
+ "xl": "x",
+ "yl": "y",
+ "zl": "z",
+ "au": "A",
+ "bu": "B",
+ "cu": "C",
+ "du": "D",
+ "eu": "E",
+ "fu": "F",
+ "gu": "G",
+ "hu": "H",
+ "iu": "I",
+ "ju": "J",
+ "ku": "K",
+ "lu": "L",
+ "mu": "M",
+ "nu": "N",
+ "ou": "O",
+ "pu": "P",
+ "qu": "Q",
+ "ru": "R",
+ "su": "S",
+ "tu": "T",
+ "uu": "U",
+ "vu": "V",
+ "wu": "W",
+ "xu": "X",
+ "yu": "Y",
+ "zu": "Z",
+ }
+
+# recurse through fonts/machines
+# each subdir from there is the designation
+
+def build_font(name, path, gridfiles):
+ img = Image.new("RGB", (112, 64))
+ pix = img.load()
+ for gridfile in gridfiles:
+ with open(os.path.join(path, gridfile)) as openf:
+ glyphname = gridfile.split('.')[0]
+ glyphchar = name_to_char(glyphname)
+ render(glyph_coords(glyphchar), glyphchar, openf.read(), pix)
+ img.save('./fonts/' + name + '.png')
+
+def name_to_char(name):
+ if not glyphmap[name]:
+ raise Exception('unknown glyph')
+ return glyphmap[name]
+
+
+# Return the row and column that a character should be saved in our bitmap
+# font.
+def glyph_coords(ch):
+ if type(ch) == int:
+ code = ch
+ else:
+ code = ord(ch)
+
+ row = (code & 0xf0) >> 4
+ col = code & 0x0f
+ return (row, col)
+
+def render_row(offset, row, line, pix):
+ row_offset, col_offset = offset
+ row_offset = row_offset * 8
+ col_offset = col_offset * 7
+ col = 0
+ for c in line[1:]:
+ if c == 'o':
+ pix[col_offset + col, row_offset + row] = (255, 255, 255)
+ col = col + 1
+
+def render(offset, ch, grid, pix):
+ row, col = glyph_coords(ch)
+ lines = grid.split("\n")
+ render_row(offset, 0, lines[1], pix)
+ render_row(offset, 1, lines[2], pix)
+ render_row(offset, 2, lines[3], pix)
+ render_row(offset, 3, lines[4], pix)
+ render_row(offset, 4, lines[5], pix)
+ render_row(offset, 5, lines[6], pix)
+ render_row(offset, 6, lines[7], pix)
+ render_row(offset, 7, lines[8], pix)
+
+for root, subdirs, subfiles in os.walk('./fonts'):
+ if subdirs == []:
+ fontname = root.replace('./fonts/', '')
+ fontname = fontname.replace('/', '-')
+ build_font(fontname, root, subfiles)