From b1fed4982862e6aca6ac97f847005018e39655c1 Mon Sep 17 00:00:00 2001
From: akr <akr>
Date: Fri, 27 Oct 2000 08:02:35 +0000
Subject: [PATCH] Makefile (munsell-data.el): complement gray data.

munsell-conv.el (munsell-split): support the form `Nvalue'.
(munsell-round9: ditto.
---
 Makefile         |    5 +++++
 munsell-conv.el  |   45 +++++++++++++++++++++++++++------------------
 munsell-names.el |   14 +++++++-------
 3 files changed, 39 insertions(+), 25 deletions(-)

diff --git a/Makefile b/Makefile
index ee990d8..920d268 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,10 @@
+# illuminant C
+WHITEx = 0.3101
+WHITEy = 0.3162
+
 munsell-data.el: all.dat 
 	awk 'NR != 1 {printf("(\"%s%s/%s\" . \"CIExyY:%s/%s/%s\")\n", $$1, $$2, $$3, $$4, $$5, $$6 / 100)}' all.dat > _generated
+	awk 'NR != 1 {printf("(\"N%s\" . \"CIExyY:%s/%s/%s\")\n", $$2, $(WHITEx), $(WHITEy), $$6 / 100)}' all.dat|uniq >> _generated
 	m4 munsell-data.template > munsell-data.el
 
 all.dat:
diff --git a/munsell-conv.el b/munsell-conv.el
index 9a051bc..2e3e76e 100644
--- a/munsell-conv.el
+++ b/munsell-conv.el
@@ -10,31 +10,40 @@
 	(value-var (nth 1 vars))
 	(chroma-var (nth 2 vars)))
     `(let ((,color-var ,color-expr))
-       (if (string-match "^\\(N\\|\\([0-9]+\\(\\.[0-9]*\\)?\\)\\(B\\|BG\\|G\\|GY\\|Y\\|YR\\|R\\|RP\\|P\\|PB\\)\\)\\([0-9]+\\(\\.[0-9]*\\)?\\)/\\([0-9]+\\(\\.[0-9]*\\)?\\)$" ,color-var)
+       (if (string-match "^N\\([0-9]+\\(\\.[0-9]*\\)?\\)\\|\\([0-9]+\\(\\.[0-9]*\\)?\\)\\(B\\|BG\\|G\\|GY\\|Y\\|YR\\|R\\|RP\\|P\\|PB\\)\\([0-9]+\\(\\.[0-9]*\\)?\\)/\\([0-9]+\\(\\.[0-9]*\\)?\\)$" ,color-var)
 	   (let ((,hue-var
-		  (if (match-beginning 2)
-		      (cons (string-to-number (match-string 2 ,color-var))
-			    (match-string 4 ,color-var))
-		    (cons 0 (match-string 1 ,color-var))))
-		 (,value-var (string-to-number (match-string 5 ,color-var)))
-		 (,chroma-var (string-to-number (match-string 7 ,color-var))))
+		  (if (match-beginning 1)
+		      '(0 . "N")
+		    (cons (string-to-number (match-string 3 ,color-var))
+			  (match-string 5 ,color-var))))
+		 (,value-var
+		  (string-to-number
+		   (match-string (if (match-beginning 1) 1 6) ,color-var)))
+		 (,chroma-var
+		  (if (match-beginning 1)
+		      0
+		    (string-to-number (match-string 8 ,color-var)))))
 	     ,body)
 	 ,(or
 	   invalid-action
 	   `(error "invalid munsell color: %s" ,color-var))))))
 
 (defun munsell-round (h v c hue-round value-round chroma-round)
-  (concat
-   (let ((h2 (* 5 (apply hue-round (car h) '(2.5)))))
-     (if (= (logand h2 1) 0)
-	 (int-to-string (ash h2 -1))
-       (concat (int-to-string (ash h2 -1)) ".5")))
-   (cdr h)
-   (if (< v 0.9)
-       (concat "0." (int-to-string (* 2 (apply value-round v '(0.2)))))
-     (int-to-string (apply value-round v '(1))))
-   "/"
-   (int-to-string (* 2 (apply chroma-round c '(2))))))
+  (let ((c-rounded (* 2 (apply chroma-round c '(2)))))
+    (concat
+     (if (= c-rounded 0)
+	 "N"
+       (let ((h2 (* 5 (apply hue-round (car h) '(2.5)))))
+	 (concat
+	  (int-to-string (ash h2 -1))
+	  (unless (= (logand h2 1) 0) ".5")
+	  (cdr h))))
+     (if (< v 0.9)
+	 (concat "0." (int-to-string (* 2 (apply value-round v '(0.2)))))
+       (int-to-string (apply value-round v '(1))))
+     (if (= c-rounded 0)
+	 ""
+       (concat "/" (int-to-string c-rounded))))))
 
 (defun munsell-convert (color)
   (munsell-split color (h v c)
diff --git a/munsell-names.el b/munsell-names.el
index 5577c1d..259ed79 100644
--- a/munsell-names.el
+++ b/munsell-names.el
@@ -78,13 +78,13 @@
     ("10PB3.5/10" "桔梗" "ききょう")
     ("7.5P5.0/8.0" "藤" "ふじ")
     ("5.0RP4.5/14" "牡丹" "ぼたん")
-;;    ("N1.5/0" "墨" "すみ")
-;;    ("5.0YR3.0/0.5" "墨橡" "くろつるばみ")
-;;    ("2.5YR3.0/0.5" "皀" "くり")
-;;    ("7.5R4.0/0.5" "鈍" "にび")
-;;    ("5.0B4.0/0.5" "青鈍" "あおにび")
-;;    ("5.0G4.5/0.5" "利久鼠" "りきゅうねずみ")
-;;    ("5.0GY5.0/0.5" "灰" "はい")
+    ("N1.5" "墨" "すみ")
+    ("5.0YR3.0/0.5" "墨橡" "くろつるばみ")
+    ("2.5YR3.0/0.5" "皀" "くり")
+    ("7.5R4.0/0.5" "鈍" "にび")
+    ("5.0B4.0/0.5" "青鈍" "あおにび")
+    ("5.0G4.5/0.5" "利久鼠" "りきゅうねずみ")
+    ("5.0GY5.0/0.5" "灰" "はい")
     )
   "Munsell color names")
 
-- 
1.7.10.4