36710988224ab9373893a97a6edc95e033b0d646
braney
  Fri Oct 18 08:52:28 2024 -0700
density mode on vcf tracks was crashing.  Refs #34659

diff --git src/hg/hgTracks/wigCommon.h src/hg/hgTracks/wigCommon.h
index c11b741..f23a2b1 100644
--- src/hg/hgTracks/wigCommon.h
+++ src/hg/hgTracks/wigCommon.h
@@ -186,16 +186,21 @@
 double wiggleLogish(double x);
 /* Return log-like transform without singularity at 0. */
 
 /******************  in source file bedGraph.c ************************/
 void wigBedGraphFindItemLimits(void *items,
     double *graphUpperLimit, double *graphLowerLimit);
 /*	find upper and lower limits of graphed items (bedGraphItem)	*/
 
 int normalizeCount(struct preDrawElement *el, double countFactor,
     double minVal, double maxVal, double sumData, double sumSquares);
 /* Normalize statistics to be based on an integer number of valid bases.
  * Integer value is the smallest integer not less than countFactor. */
 
 void wigLogoMafCheck(struct track *tg,  int start, int end);
 /* Check to see if we should draw a sequence logo for the wiggle contents. */
+
+int setupForWiggle(struct track *tg, enum trackVisibility vis);
+/* Check to see if this track should show density coverage and if so
+ * make sure it has the cart data to support it.
+ */
 #endif /* WIGCOMMON_H */