CVSROOT: /cvsroot/lilypond
Module name: lilypond
Branch:
Changes by: Han-Wen Nienhuys <[EMAIL PROTECTED]> 05/07/10 12:10:22
Modified files:
. : ChangeLog
lily : bezier.cc
Log message:
hardcode binomial coefficients of order 3.
CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/lilypond/lilypond/ChangeLog.diff?tr1=1.3860&tr2=1.3861&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/lilypond/lilypond/lily/bezier.cc.diff?tr1=1.58&tr2=1.59&r1=text&r2=text
Patches:
Index: lilypond/ChangeLog
diff -u lilypond/ChangeLog:1.3860 lilypond/ChangeLog:1.3861
--- lilypond/ChangeLog:1.3860 Sun Jul 10 11:25:24 2005
+++ lilypond/ChangeLog Sun Jul 10 12:10:22 2005
@@ -1,5 +1,9 @@
2005-07-10 Han-Wen Nienhuys <[EMAIL PROTECTED]>
+ * lily/bezier.cc: hardcode binomial coefficients of order 3.
+
+ * lily/include/music-wrapper.hh: remove Music_wrapper as Music subtype.
+
* scm/define-music-types.scm (music-descriptions): don't use
Music_wrapper type.
Index: lilypond/lily/bezier.cc
diff -u lilypond/lily/bezier.cc:1.58 lilypond/lily/bezier.cc:1.59
--- lilypond/lily/bezier.cc:1.58 Tue Apr 12 22:49:29 2005
+++ lilypond/lily/bezier.cc Sun Jul 10 12:10:22 2005
@@ -12,6 +12,8 @@
#include "warn.hh"
#include "libc-extension.hh"
+Real binomial_coefficient_3[] = {1,3 ,3, 1};
+
Real
binomial_coefficient (Real over, int under)
{
@@ -90,7 +92,7 @@
Offset o;
for (int j = 0; j < 4; j++)
{
- o += control_[j] * binomial_coefficient (3, j)
+ o += control_[j] * binomial_coefficient_3[j]
* pow (t, j) * pow (1 - t, 3 - j);
tj *= t;
@@ -113,7 +115,7 @@
for (int j = 0; j <= 3; j++)
{
p
- += (control_[j][a] * binomial_coefficient (3, j))
+ += (control_[j][a] * binomial_coefficient_3[j])
* Polynomial::power (j, Polynomial (0, 1))
* Polynomial::power (3 - j, Polynomial (1, -1));
}
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