Svg center of rotation

<svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="473" height="190"> <polygon index="0" points="138,100 163,125 138,150 113,125" transform-origin="50% 50%" transform="translate(10, 0) scale(1.2, 1) rotate(30)" style="fill:-sharpff9d4a;stroke:-sharp000 ;stroke-width:2;transform-origin: 50% 50%"></polygon> </svg>

Why is origin set or not rotated in the center?
I generated a SVG string like this when JAVA generated svg images, and then found that the center of rotation is not right, how to fix it?

Svg java css
Jun.28,2021

do not use origin , there is a problem with safari

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3a464-2ba52.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3a464-2ba52.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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