internal static extern void dGeomHeightfieldSetHeightfieldData(dGeomID g, dHeightfieldDataID d);
internal static extern void dGeomHeightfieldDataSetBounds(dHeightfieldDataID d,
dReal minHeight, dReal maxHeight);
internal static extern void dGeomHeightfieldDataBuildCallback(dHeightfieldDataID d,
IntPtr pUserData, dHeightfieldGetHeight pCallback,
dReal width, dReal depth, int widthSamples, int depthSamples,
dReal scale, dReal offset, dReal thickness, int bWrap);
internal static extern void dGeomHeightfieldDataBuildDouble(dHeightfieldDataID d,
IntPtr pHeightData, int bCopyHeightData,
dReal width, dReal depth, int widthSamples, int depthSamples,
dReal scale, dReal offset, dReal thickness, int bWrap);
internal static extern dGeomID dCreateHeightfield(
dSpaceID space,
dHeightfieldDataID data,
int bPlaceable);