title: Android crop image like camscanner
body: <p>I am developing a project which requires the image crop feature like camscanner android application,when a picture is taken and when user clicks the crop button, a rectangle overlay should be shown as in camscanner. Where the rectangle path can be stretched to any angle and can perform crop.please do help me with a solution.</p>
  
  <p>I was referring to <a href="https://github.com/edmodo/cropper" rel="noreferrer">https://github.com/edmodo/cropper</a> . but this as only rectangle overlay with 4 points.please do help me if any one has a link or solution!!</p>