Update app.py

app.py

@@ -373,10 +373,8 @@ with gr.Blocks(css=css) as demo:
                       if (y < 0) { y = 0; } else if (y > 31) { y = 31; }
                       var pl_a = document.getElementById(\"pl\").getAttribute(\"points\").split(\" \");
                       
-                      var minx = Math.min(xold, x);
-                      var maxx = Math.max(xold, x);
-                      for (var i=minx+1; i<maxx; i++) {
-                        pl_a[i] = x+\",\"+parseInt(lerp( yold, y, (i-minx)/(maxx-minx) ));
+                      for (var i=Math.min(xold, x)+1; i<Math.max(xold, x); i++) {
+                        pl_a[i] = x+\",\"+parseInt(lerp( yold, y, (i-xold)/(x-xold) ));
                       }
                       pl_a[x] = x+\",\"+y;
                       document.getElementById(\"pl\").setAttribute(\"points\", pl_a.join(\" \"));