485724bcdce8810dcf1b65755c97dbb3c39fa02a
braney
  Mon Aug 25 15:37:25 2025 -0700
give quickLiftChains there own methods in hgTracks and a special hgc
page

diff --git src/hg/hgTracks/chainTrack.c src/hg/hgTracks/chainTrack.c
index efeee84c0ca..2c8af2787af 100644
--- src/hg/hgTracks/chainTrack.c
+++ src/hg/hgTracks/chainTrack.c
@@ -330,97 +330,41 @@
                 {
                 int temp;
 
                 temp = sf->qStart;
                 sf->qStart = lf->qSize - sf->qEnd;
                 sf->qEnd = lf->qSize - temp;
                 }
 	    }
         }
 if (tg->isBigBed)
     bbiFileClose(&bbClosure.bbi);
 else
     hFreeConn(&sqlClosure.conn);
 }
 
-#ifdef NOTFORNOW
-static void denseChainReverse(struct track *tg, int seqStart, int seqEnd,
-                        struct hvGfx *hvg, int xOff, int yOff, int width,
-                        MgFont *font, Color color, enum trackVisibility vis)
-/* draw a dense chain in a mode that only shows the gaps. */
-{
-hvGfxSetClip(hvgSide, insideX, yOff, insideWidth, tg->height);
-struct slList *item;
-int y = yOff;
-double scale = scaleForWindow(width, seqStart, seqEnd);
-int heightPer = tg->heightPer;
-color = hvGfxFindRgb(hvg, &undefinedYellowColor);
-for (item = tg->items; item != NULL; item = item->next)
-    {
-    struct linkedFeatures *lf = (struct linkedFeatures *)item;
-    struct simpleFeature *sf = lf->components;
-    unsigned prev = winStart;
-    for (; sf; sf = sf->next)
-        {
-        unsigned s = sf->start;
-        drawScaledBox(hvg, prev, s,  scale, xOff, y, heightPer, color);
-        prev = sf->end;
-        }
-    drawScaledBox(hvg, prev, winEnd,  scale, xOff, y, heightPer, color);
-
-    break;
-    }
-
-color = MG_BLACK;
-for (item = tg->items; item != NULL; item = item->next)
-    {
-    struct linkedFeatures *lf = (struct linkedFeatures *)item;
-    struct simpleFeature *sf = lf->components;
-
-    mapBoxHgcOrHgGene(hvg, winStart, winEnd, xOff, yOff, insideWidth, heightPer, tg->track,
-                  lf->extra, "Go to hg38", NULL, TRUE, NULL);
-    struct simpleFeature *prev = NULL;
-    for (; sf; sf = sf->next)
-        {
-        unsigned s = sf->start;
-        if (prev)
-            {
-            if (prev->qEnd != sf->qStart)
-                drawScaledBox(hvg, s, s,  scale, xOff, y, heightPer, color);
-            }
-        prev = sf;
-        }
-    }
-}
-#endif
-
 void chainDraw(struct track *tg, int seqStart, int seqEnd,
         struct hvGfx *hvg, int xOff, int yOff, int width,
         MgFont *font, Color color, enum trackVisibility vis)
 /* Draw chained features. This loads up the simple features from
  * the chainLink table, calls linkedFeaturesDraw, and then
  * frees the simple features again. */
 {
 
 if (tg->items == NULL)		/*Exit Early if nothing to do */
     return;
 
-char *chainType = trackDbSetting(tg->tdb, "chainType");
-if ((chainType != NULL) && (vis == tvDense) )
-    maybeDrawQuickLiftLines( tg, seqStart, seqEnd, hvg, xOff, yOff, width,
-                      font, color, vis);
-else
 linkedFeaturesDraw(tg, seqStart, seqEnd, hvg, xOff, yOff, width,
     font, color, vis);
 }
 
 void bigChainLoadItems(struct track *tg)
 /* Load up all of the chains from correct table into tg->items
  * item list.  At this stage to conserve memory for other tracks
  * we don't load the links into the components list until draw time. */
 {
 boolean doSnake = cartOrTdbBoolean(cart, tg->tdb, "doSnake" , FALSE);
 struct linkedFeatures *list = NULL, *lf;
 int qs;
 char *optionChrStr;
 struct cartOptions *chainCart;