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config.py

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from pathlib import Path

ROOT = Path(__file__).parent

DATA_DIR = ROOT / "data" / "iam"

WORDS_DIR = DATA_DIR / "words"

XML_DIR = DATA_DIR / "xml"

WORDS_INDEX = DATA_DIR / "words.txt"

PAGES_DIR = ROOT / "pages"

FONTS_DIR = ROOT / "fonts"

OUTPUT_DIR = ROOT / "output"

def ensure_runtime_dirs() -> None:

"""Create the local directories the app expects at runtime."""

for path in (DATA_DIR, FONTS_DIR, OUTPUT_DIR, PAGES_DIR):

path.mkdir(parents=True, exist_ok=True)

# Page dimensions (A4 at 200 DPI — good quality; bump to 300 for print quality)

PAGE_DPI = 200

PAGE_W = int(8.27 * PAGE_DPI) # 1240 px

PAGE_H = int(11.69 * PAGE_DPI) # 1754 px

# Margins (px)

MARGIN_TOP = int(0.75 * PAGE_DPI)

MARGIN_BOTTOM = int(0.75 * PAGE_DPI)

MARGIN_LEFT = int(0.9 * PAGE_DPI)

MARGIN_RIGHT = int(0.7 * PAGE_DPI)

# Line spacing for ruled page

LINE_SPACING_PT = 32 # px at 200 DPI

LINE_COLOR = (176, 196, 222) # steel blue, like real ruled paper

MARGIN_LINE_COLOR = (220, 120, 120) # pink margin line

# Ink colors

INK_COLORS = {

"blue": (30, 60, 180),

"black": (20, 20, 30),

"pencil": (90, 90, 95),

}

DEFAULT_INK = "blue"

# Glyph rendering

GLYPH_TARGET_HEIGHT = 46 # px — standard glyph height at 200 DPI

WORD_SPACING = 18 # px between words

CHAR_SPACING = 3 # px between chars within composed word

# Writer state defaults (variation engine)

FATIGUE_RATE = 0.0008 # fatigue increase per character written

FATIGUE_MAX = 0.45 # cap on fatigue level (0–1)

ATTENTION_DECAY = 0.12 # attention drops this fraction per line

ATTENTION_PARAGRAPH_BOOST = 0.6 # attention reset on paragraph break