From: Christian Heller <c.heller@plomlompom.de>
Date: Sun, 24 Sep 2023 00:16:17 +0000 (+0200)
Subject: Bookmaker: Remove unnecessary --spine option, use -s for --symmetry.
X-Git-Url: https://plomlompom.com/repos/%22https:/validator.w3.org/%7B%7Bprefix%7D%7D/%7B%7Btodo.comment%7D%7D?a=commitdiff_plain;h=84b45203eace6e54962a2695f89a4193c644226d;p=misc

Bookmaker: Remove unnecessary --spine option, use -s for --symmetry.
---

diff --git a/bookmaker.py b/bookmaker.py
index b9daa0b..3737edc 100755
--- a/bookmaker.py
+++ b/bookmaker.py
@@ -8,18 +8,18 @@ points_per_cm = 10 * 72 / 25.4
 cut_depth = 1.95 * points_per_cm
 cut_width = 1.05 * points_per_cm
 middle_point_depth = 0.4 * points_per_cm
+spine_limit = 1 * points_per_cm
 
 parser = argparse.ArgumentParser(description="build print-ready book PDF")
 parser.add_argument("-i", "--input_file", action="append", required=True, help="input PDF file")
 parser.add_argument("-o", "--output_file", required=True, help="output PDF file")
 parser.add_argument("-p", "--page_range", action="append", help="page range, e.g., '3-end'")
 parser.add_argument("-c", "--crop_range", action="append", help="cm crops left, bottom, right, top – e.g., '10,10,10,10'; prefix with ':'-delimited page range to limit effect")
-parser.add_argument("-t", "--symmetry", action="store_true", help="alternate horizontal crops between odd and even pages")
+parser.add_argument("-s", "--symmetry", action="store_true", help="alternate horizontal crops between odd and even pages")
 parser.add_argument("-r", "--rotate", dest="rotate", type=int, action="append", help="rotate page of number by 90° (usable multiple times on same page!)")
 parser.add_argument("-n", "--nup4", action='store_true', help="puts 4 input pages onto 1 output page")
 parser.add_argument("-a", "--analyze", action="store_true", help="in --nup4, print lines identifying spine, page borders")
 parser.add_argument("-m", "--margin", type=float, default=0.43, help="print margin for --nup4 in cm (default 0.43)")
-parser.add_argument("-s", "--spine", type=float, default=1, help="on --nup4, cm width of margin hidden in spine (default 1)")
 args = parser.parse_args()
 
 
@@ -70,7 +70,7 @@ for page in pages_to_add:
     page.mediabox.right = a4_width
     page.cropbox = page.mediabox
 
-# determine page crops, zooms
+# determine page crops, zooms, crop symmetry
 crops_at_page = [(0,0,0,0)]*len(pages_to_add)
 zoom_at_page = [1]*len(pages_to_add)
 if args.crop_range:
@@ -109,6 +109,8 @@ if args.crop_range:
 
 writer = pypdf.PdfWriter()
 if not args.nup4:
+    # single-page output
+    print("building 1-input-page-per-output-page book")
     odd_page = True
     for i, page in enumerate(pages_to_add):
         crop_left, crop_bottom, crop_right, crop_top = crops_at_page[i]
@@ -123,8 +125,8 @@ if not args.nup4:
         odd_page = not odd_page
 
 else:
+    print("-n: building 4-input-pages-per-output-page book")
     n_pages_per_axis = 2
-    spine_limit = args.spine * points_per_cm
     printable_margin = args.margin * points_per_cm
     printable_scale = (a4_width - 2*printable_margin)/a4_width
     half_width = a4_width / n_pages_per_axis