The checkbox in the editor

iomex

UKDT
Dec 10, 2015
1,334
It changes spline and object height tracking behaviour. With it unchecked, when you move an asset it follows the absolute height. When you check it, it follows the terrain.
 

Road-hog123

An Orange Bus
Administrator
UKDT
Dec 10, 2015
1,758
rE-UFSQs2YS8cL6aF_yKmztdYzlpaoQI.png



When it's not checked, a spline stays at it's current global elevation when moved (it goes through terrain), but when checked it stays clamped to the terrain when moved. Some objects experience the same thing too. :)
 
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Rob_Devs

All time legend/Salisbury Reds Driver
Jan 29, 2016
406
Sweet, never used it. Also you can move an object / spline on an axis by pressing z or x depending on which way you want to move it