fix image cors  error
diff --git a/public/data-gl/bar3d-myth.js b/public/data-gl/bar3d-myth.js
index 5b62671..c143078 100644
--- a/public/data-gl/bar3d-myth.js
+++ b/public/data-gl/bar3d-myth.js
@@ -101,3 +101,4 @@
 }
 
 img.src = ROOT_PATH + '/data-gl/asset/sample.jpg';
+img.crossOrigin = 'Anonymous';