知识点:椭圆选框工具、矩形选框工具、画笔、选区运算
视频网址:
https://mooc1-2.chaoxing.com/mooc-ans/mycourse/teacherstudy?chapterId=687030348&courseId=220576162&clazzid=85345057
知识点:椭圆选框工具、矩形选框工具、画笔、选区运算
视频网址:
https://mooc1-2.chaoxing.com/mooc-ans/mycourse/teacherstudy?chapterId=687030348&courseId=220576162&clazzid=85345057