g.line: store the shrinked values of all stripes.

Prepare for switching between different stripe datasets.

Author: TobiasLohner

g.line.js

@@ -87,6 +87,7 @@
 
         var valuesx_shrinked = [];
         var valuesy_shrinked = [];
+        var stripesy_shrinked = [];
 
         for (i = 0, ii = valuesy.length; i < ii; i++) {
             valuesy_shrinked[i] = shrink(valuesy[i], width - 2 * gutter);
@@ -95,12 +96,10 @@
             if (valuesx[i]) {
                 valuesx_shrinked[i] = shrink(valuesx[i], width - 2 * gutter);
             }
-        }
-
-        var stripesy_shrinked;
 
-        if (opts.stripes) {
-          stripesy_shrinked = shrink(stripesy[primary], width - 2 * gutter);
+            if (opts.stripes) {
+                stripesy_shrinked[i] = shrink(stripesy[primary], width - 2 * gutter);
+            }
         }
 
         var stripes_miny = Math.min.apply(Math, stripesy[primary]),
@@ -163,10 +162,10 @@
             var base_color = opts.stripes.color || { h: 0.42, s: 1, l: 0.5 };
             var stripes_range = opts.stripes.range || Math.max(1, stripes_maxy - stripes_miny);
 
-            for (var j = 0, jj = stripesy_shrinked.length - 1; j < jj; j++) {
+            for (var j = 0, jj = stripesy_shrinked[primary].length - 1; j < jj; j++) {
                 u = Math.max(0, Math.round( (valuesx_shrinked[primary][j] - minx) * kx )),
                 v = Math.min(width - 2 * gutter, Math.round( (valuesx_shrinked[primary][j+1] - minx) * kx ));
-                var value = (stripesy_shrinked[j] - stripes_miny) / stripes_range;
+                var value = (stripesy_shrinked[primary][j] - stripes_miny) / stripes_range;
 
                 u_min = Math.min(u, u_min);
                 v_max = Math.max(v, v_max);
@@ -462,10 +461,10 @@
                     valuesx_shrinked[i] = shrink(valuesx[i].slice(from[i], to[i]+1), width - 2 * gutter);
                     if (max_len < valuesx_shrinked[i].length) max_len = valuesx_shrinked[i].length;
                 }
-            }
 
-            if (opts.stripes) {
-                stripesy_shrinked = shrink(stripesy[primary].slice(from[primary], to[primary]+1), width - 2 * gutter);
+                if (opts.stripes) {
+                    stripesy_shrinked[i] = shrink(stripesy[primary].slice(from[primary], to[primary]+1), width - 2 * gutter);
+                }
             }
 
             allx = Array.prototype.concat.apply([], valuesx_shrinked);