Merge branch 'master' of https://github.com/SuperMap/iClient-JavaScript into master

Author: MyShallowTime

src/openlayers/core/StyleUtils.js

@@ -1075,7 +1075,7 @@ export class StyleUtils {
 
  let fontSize = isRank ? 2 * parameters.radius + "px" : parameters.fontSize;
 
- const {offsetX, offsetY, rotation} = parameters;
+ const {offsetX, offsetY, rotation=0} = parameters;
  const offset = StyleUtils.getTextOffset(fontSize, offsetX, offsetY);
  return new Style({
  text: new Text({