TerrainX command?

Blitz3D Forums/Blitz3D Programming/TerrainX command?

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Hi! Is there a purpose to the "TerrainX" command?

It seems to be useless because:

A) There can be multiple points on a Terrain that have the same Y and Z coordinates as each other, but different X coordinates (for instance, there could be a level area that includes a line on which Z never changes)

B) Therefore, the X value is needed as input to TerrainX

C) So if you already know the X value, what does this command do for you?

Is there something I'm missing, or is the command as useless as it appears?

Thanks for any light you can shed on this.