Fix v7 hist drawing when bins are too small

linev · linev · commit 88d61b75db27 · 2020-10-06T17:51:32.000+02:00
diff --git a/scripts/JSRootPainter.v7hist.js b/scripts/JSRootPainter.v7hist.js
@@ -2286,9 +2286,10 @@
             currx[colindx] = handle.grx[i];
             curry[colindx] = handle.gry[j+dj];
 
-            colPaths[colindx] += "v" + (handle.gry[j] - handle.gry[j+dj]) +
-                                 "h" + (handle.grx[i+di] - handle.grx[i]) +
-                                 "v" + (handle.gry[j+dj] - handle.gry[j]) + "z";
+            var dy = (handle.gry[j] - handle.gry[j+dj]) || 1,
+                dx = (handle.grx[i+di] - handle.grx[i]) || 1;
+
+            colPaths[colindx] += "v"+dy + "h"+dx + "v"+(-dy) + "z";
          }
       }
 

Original file line number	Diff line number	Diff line change
`@@ -2286,9 +2286,10 @@`
`2286`	`2286`	`currx[colindx] = handle.grx[i];`
`2287`	`2287`	`curry[colindx] = handle.gry[j+dj];`
`2288`	`2288`
`2289`		`- colPaths[colindx] += "v" + (handle.gry[j] - handle.gry[j+dj]) +`
`2290`		`- "h" + (handle.grx[i+di] - handle.grx[i]) +`
`2291`		`- "v" + (handle.gry[j+dj] - handle.gry[j]) + "z";`
	`2289`	`+ var dy = (handle.gry[j] - handle.gry[j+dj]) \|\| 1,`
	`2290`	`+ dx = (handle.grx[i+di] - handle.grx[i]) \|\| 1;`
	`2291`	`+`
	`2292`	`+ colPaths[colindx] += "v"+dy + "h"+dx + "v"+(-dy) + "z";`
`2292`	`2293`	`}`
`2293`	`2294`	`}`
`2294`	`2295`