增加：坐标引导返回修正T值

liusuyi

2024-06-25 7556c19ef999f51d07d85cb5d13eba27d9efa41e

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Phil Booth <pmbooth@gmail.com> (https://philbooth.me/)
Andrew Lawson (https://github.com/adlawson)
Tim O'Sulg (https://github.com/timgluz)