How to realize route finding on custom map

define an indoor map
can be a bitmap or 3D map
and then go from point A to point B bypass obstacles
and then how to achieve the route finding function

refer to the figure

clipboard.png

Mar.29,2021
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-64f5-1b34c2d-2bf32.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b34c2d-2bf32.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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