fix(line): optimize area animation

src/chart/line/LineSeries.ts

@@ -79,6 +79,11 @@ export interface LineSeriesOption extends SeriesOption,
         origin?: 'auto' | 'start' | 'end'
     }
 
+    emphasis?: {
+        label?: LabelOption
+        itemStyle?: ItemStyleOption
+    }
+
     step?: false | 'start' | 'end' | 'middle'
 
     smooth?: boolean
@@ -87,7 +92,6 @@ export interface LineSeriesOption extends SeriesOption,
 
     connectNulls?: boolean
 
-
     showSymbol?: boolean
     // false | 'auto': follow the label interval strategy.
     // true: show all symbols.

src/chart/line/LineView.ts

@@ -786,7 +786,6 @@ class LineView extends ChartView {
             polygon.stopAnimation();
             graphic.updateProps(polygon, {
                 shape: {
-                    points: next,
                     stackedOnPoints: stackedOnNext
                 }
             }, seriesModel);

test/label-layout.html

@@ -340,10 +340,10 @@ under the License.
                             const isLeft = params.labelRect.x < cx;
                             return isLeft ? {
                                 x: cx - 200,
-                                textAlign: 'right',
+                                align: 'right',
                             } : {
                                 x: cx + 100,
-                                textAlign: 'left'
+                                align: 'left'
                             };
                         }
                     }]