XPLMProbeTerrainXYZ

XPLMProbeTerrainXYZ

XPLM_API XPLMProbeResult XPLMProbeTerrainXYZ(
                         XPLMProbeRef         inProbe,
                         float                inX,
                         float                inY,
                         float                inZ,
                         XPLMProbeInfo_t *    outInfo);

Probes the terrain. Pass in the XYZ coordinate of the probe point, a probe object, and an XPLMProbeInfo_t struct that has its structSize member set properly. Other fields are filled in if we hit terrain, and a probe result is returned.