pub unsafe extern "C" fn dGeomHeightfieldDataBuildCallback(
d: dHeightfieldDataID,
pUserData: *mut c_void,
pCallback: dHeightfieldGetHeight,
width: f64,
depth: f64,
widthSamples: c_int,
depthSamples: c_int,
scale: f64,
offset: f64,
thickness: f64,
bWrap: c_int,
)