how to calculate left and top in rotation after getting the matrix?
<div style="width:100px;height:50px;">
</div>
div.style.transform = `rotateZ(45deg)`
//
let transform = window.getComputedStyle(div)["transform"],
matrix = transform.slice(7, -1).split(",") rotation and left , top have nothing to do
if it is div use trigonometric function
left = 100*cos(45/180*Math.PI)
right = 100*sin(45/180*Math.PI)Previous: How to use jackson to deserialize nested json fields to objects
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