X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=hacks%2Fshadebobs.c;h=7a1a0ffc13c258bad17567ba44150f7e6ee809d3;hb=aa75c7476aeaa84cf3abc192b376a8b03c325213;hp=881740c9996ed97fc30fbadae4b5b3f838928c4b;hpb=50be9bb40dc60130c99ffa568e6677779904ff70;p=xscreensaver

diff --git a/hacks/shadebobs.c b/hacks/shadebobs.c
index 881740c9..7a1a0ffc 100644
--- a/hacks/shadebobs.c
+++ b/hacks/shadebobs.c
@@ -52,6 +52,9 @@ static const char *shadebobs_defaults [] = {
   "*cycles:   10",
   "*ncolors:  64",    /* changing this doesn't work particularly well */
   "*delay:    10000",
+#ifdef HAVE_MOBILE
+  "*ignoreRotation: True",
+#endif
   0
 };
 
@@ -144,8 +147,11 @@ static void MoveShadeBob( struct state *st, SShadeBob *pShadeBob )
 	pShadeBob->nAngle	   += pShadeBob->nAngleInc;
 	pShadeBob->nAngleDelta -= pShadeBob->nAngleInc;
 
-	if( pShadeBob->nAngle >= st->iDegreeCount )	pShadeBob->nAngle -= st->iDegreeCount;
-	else if( pShadeBob->nAngle < 0 )		pShadeBob->nAngle += st->iDegreeCount;
+	/* Since it can happen that nAngle < 0 and nAngle + iDegreeCount >= iDegreeCount
+	   on floating point, we set some marginal value.
+	*/
+	if( pShadeBob->nAngle + 0.5 >= st->iDegreeCount )	pShadeBob->nAngle -= st->iDegreeCount;
+	else if( pShadeBob->nAngle < -0.5 )		pShadeBob->nAngle += st->iDegreeCount;
 	
 	if( ( pShadeBob->nAngleInc>0.0F  && pShadeBob->nAngleDelta<pShadeBob->nAngleInc ) ||
 	    ( pShadeBob->nAngleInc<=0.0F && pShadeBob->nAngleDelta>pShadeBob->nAngleInc ) )