From cf5a32da8dea60a586fb14f7a5ae37417f01c178 Mon Sep 17 00:00:00 2001
From: Patrick McCarty <pnorcks@gmail.com>
Date: Fri, 18 Jun 2010 20:16:06 -0700
Subject: [PATCH] Support configurable join and cap styles for 'path.

---
 scm/output-ps.scm  | 19 +++++++++++++------
 scm/output-svg.scm |  9 +++++----
 2 files changed, 18 insertions(+), 10 deletions(-)

diff --git a/scm/output-ps.scm b/scm/output-ps.scm
index 128b1d4104..54ba874d00 100644
--- a/scm/output-ps.scm
+++ b/scm/output-ps.scm
@@ -29,6 +29,7 @@
 
 (use-modules (guile)
 	     (ice-9 regex)
+	     (ice-9 optargs)
 	     (srfi srfi-1)
 	     (srfi srfi-13)
 	     (scm framework-ps)
@@ -284,7 +285,7 @@
 	     (cdr y)
 	     url))
 
-(define (path thickness exps)
+(define* (path thickness exps #:optional (cap 'round) (join 'round) (fill? #f))
   (define (convert-path-exps exps)
     (if (pair? exps)
 	(let*
@@ -307,8 +308,14 @@
 		(convert-path-exps (drop rest arity))))
 	'()))
 
-
-  (ly:format
-   "gsave currentpoint translate 1 setlinecap ~a setlinewidth\n~l stroke grestore"
-   thickness
-   (convert-path-exps exps)))
+  (let ((cap-numeric (case cap ((butt) 0) ((round) 1) ((square) 2)))
+	(join-numeric (case join ((miter) 0) ((round) 1) ((bevel) 2))))
+    (ly:format
+     "gsave currentpoint translate
+~a setlinecap ~a setlinejoin ~a setlinewidth
+~l gsave stroke grestore ~a grestore"
+     cap-numeric
+     join-numeric
+     thickness
+     (convert-path-exps exps)
+     (if fill? "fill" ""))))
diff --git a/scm/output-svg.scm b/scm/output-svg.scm
index 3a82c6f815..40aafb420f 100644
--- a/scm/output-svg.scm
+++ b/scm/output-svg.scm
@@ -29,6 +29,7 @@
   (guile)
   (ice-9 regex)
   (ice-9 format)
+  (ice-9 optargs)
   (lily)
   (srfi srfi-1)
   (srfi srfi-13))
@@ -548,7 +549,7 @@
 			x-max y-min
 			x-max 0)))))
 
-(define (path thick commands)
+(define* (path thick commands #:optional (cap 'round) (join 'round) (fill? #f))
   (define (convert-path-exps exps)
     (if (pair? exps)
 	(let*
@@ -576,10 +577,10 @@
 
   (entity 'path ""
 	  `(stroke-width . ,thick)
-	  '(stroke-linejoin . "round")
-	  '(stroke-linecap . "round")
+	  `(stroke-linejoin . ,(symbol->string join))
+	  `(stroke-linecap . ,(symbol->string cap))
 	  '(stroke . "currentColor")
-	  '(fill . "none")
+	  `(fill . ,(if fill? "currentColor" "none"))
 	  `(d . ,(apply string-append (convert-path-exps commands)))))
 
 (define (placebox x y expr)
-- 
2.39.2