clear parcoords canvas specially if there's zero panels as panel redraw loop will not enter the loop body that also clears

monfera · monfera · commit 4e4f15d1cf63 · 2017-03-03T15:19:29.000+01:00
diff --git a/src/traces/parcoords/lines.js b/src/traces/parcoords/lines.js
@@ -365,6 +365,11 @@ module.exports = function(canvasGL, lines, canvasWidth, canvasHeight, initialDim
             }
         }
 
+        if(panelCount === 0) {
+            // clear canvas here, as the panel iteration below will not enter the loop body
+            clear(regl, 0, 0, canvasWidth, canvasHeight);
+        }
+
         for(I = 0; I < panelCount; I++) {
             var panel = panels[I];
             var dim1 = panel.dim1;

Original file line number	Diff line number	Diff line change
`@@ -365,6 +365,11 @@ module.exports = function(canvasGL, lines, canvasWidth, canvasHeight, initialDim`
`365`	`365`	`}`
`366`	`366`	`}`
`367`	`367`
	`368`	`+ if(panelCount === 0) {`
	`369`	`+ // clear canvas here, as the panel iteration below will not enter the loop body`
	`370`	`+ clear(regl, 0, 0, canvasWidth, canvasHeight);`
	`371`	`+ }`
	`372`	`+`
`368`	`373`	`for(I = 0; I < panelCount; I++) {`
`369`	`374`	`var panel = panels[I];`
`370`	`375`	`var dim1 = panel.dim1;`