From 268f6c6e747a592b899a1331ceb61425defd7cc4 Mon Sep 17 00:00:00 2001
From: John Honniball <coredump@virginmedia.com>
Date: Sat, 1 Feb 2025 13:30:22 +0000
Subject: [PATCH] Add seigaiha and Triangluator to TODO.

---
 TODO.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/TODO.md b/TODO.md
index 6e5f91d..a6261f0 100644
--- a/TODO.md
+++ b/TODO.md
@@ -116,8 +116,10 @@ program which could be driven by a text file.
 * Draw some Soddy Circles: https://mathworld.wolfram.com/SoddyCircles.html
 * Draw some randomised circle packing plots: https://en.wikipedia.org/wiki/Circle_packing
 * Draw some hitomezashi sashiko patterns.
+* Draw some seigaiha patterns (blue sea and waves).
 * Draw some paper engineering cut-out-and-fold mechanisms.
 * Draw some Fold-and-Cut shapes: https://en.wikipedia.org/wiki/Fold-and-cut_theorem
+* Draw a Triangulator, US patent 2166372, https://www.ebay.com/itm/135361028392 https://www.si.edu/object/sliding-chart-trigonometry-triangulator%3Anmah_1134187 https://www.sliderulemuseum.com/Manuals/M138_Dieterich-Post_Catalog_1968.pdf
 * Plot a cassette inlay, and/or a CD inlay or a floppy disk label or
 some other obscure and obsolete media label. Maybe a DVD or Blu-Ray
 label. Plot directly onto a CD-R or DVD-RW.