Web-es: fix a couple of Spanish links.

[lilypond.git] / scm / lily-library.scm

diff --git a/scm/lily-library.scm b/scm/lily-library.scm
index 2270726902fdee0b4ae2c1993ac201e45f4fcc68..214c095cf2c720c0429cb8dfc6b753acc1304b77 100644 (file)
--- a/scm/lily-library.scm
+++ b/scm/lily-library.scm
@@ -707,20 +707,16 @@ right (@var{dir}=+1)."
 (define-public (coord-scale coordinate amount)
   (coord-operation * amount coordinate))
 
-(define-public (coord-rotate coordinate degrees-in-radians)
-  (let*
-      ((coordinate
-        (cons
-         (exact->inexact (coord-x coordinate))
-         (exact->inexact (coord-y coordinate))))
-       (radius
-        (sqrt
-         (+ (* (coord-x coordinate) (coord-x coordinate))
-            (* (coord-y coordinate) (coord-y coordinate)))))
-       (angle (angle-0-2pi (atan (coord-y coordinate) (coord-x coordinate)))))
-    (cons
-     (* radius (cos (+ angle degrees-in-radians)))
-     (* radius (sin (+ angle degrees-in-radians))))))
+(define-public (coord-rotate coordinate angle-in-radians)
+  (coord-rotated coordinate (/ angle-in-radians PI-OVER-180)))
+
+(define-public (coord-rotated coordinate direction)
+  ;; Same, in degrees or with a given direction
+  (let ((dir (ly:directed direction)))
+    (cons (- (* (car dir) (car coordinate))
+             (* (cdr dir) (cdr coordinate)))
+          (+ (* (car dir) (cdr coordinate))
+             (* (cdr dir) (car coordinate))))))
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;; trig
@@ -735,11 +731,11 @@ right (@var{dir}=+1)."
 
 (define-public (cyclic-base-value value cycle)
   "Take @var{value} and modulo-maps it between 0 and base @var{cycle}."
-  (if (< value 0)
-      (cyclic-base-value (+ value cycle) cycle)
-      (if (>= value cycle)
-          (cyclic-base-value (- value cycle) cycle)
-          value)))
+  (cond ((< value 0)
+         (cyclic-base-value (+ value cycle) cycle))
+        ((>= value cycle)
+         (cyclic-base-value (- value cycle) cycle))
+        (else value)))
 
 (define-public (angle-0-2pi angle)
   "Take @var{angle} (in radians) and maps it between 0 and 2pi."
@@ -766,14 +762,8 @@ right (@var{dir}=+1)."
 
 (define-public (polar->rectangular radius angle-in-degrees)
   "Return polar coordinates (@var{radius}, @var{angle-in-degrees})
-as rectangular coordinates @ode{(x-length . y-length)}."
-
-  (let ((complex (make-polar
-                  radius
-                  (degrees->radians angle-in-degrees))))
-    (cons
-     (real-part complex)
-     (imag-part complex))))
+as rectangular coordinates @code{(x-length . y-length)}."
+  (ly:directed angle-in-degrees radius))
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;; string
@@ -786,6 +776,12 @@ as rectangular coordinates @ode{(x-length . y-length)}."
 (define-public (string-startswith s prefix)
   (equal? prefix (substring s 0 (min (string-length s) (string-length prefix)))))
 
+(define-public (remove-whitespace strg)
+"Remove characters satisfying @code{char-whitespace?} from string @var{strg}"
+  (string-delete
+    strg
+    char-whitespace?))
+
 (define-public (string-encode-integer i)
   (cond
    ((= i  0) "o")