How to scroll trapezoidal background infinitely in SpriteKit

in SpriteKit, if you want to do an infinite scrolling of a background, just stack one background on top of another, and then constantly change the y-axis coordinates, then how to achieve the feeling of infinite scrolling if the background is an irregular figure or background?

Swift spritekit
Feb.12,2022

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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-64f5-1e74314-5b2d1.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e74314-5b2d1.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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