public static extern void VMdlFreeTrimVolElem(VMdlVolumeElementStruct *TrimVolElem);
 public static extern VMdlSlicerInfoStruct *VMdlSlicerInitVElement(
     VMdlVolumeElementStruct *VolumeElement,
     VMdlSlicerParamsStruct *Params);
 public static extern VMdlVModelStruct *VMdlVModelFromVElement(VMdlVolumeElementStruct *VElem,
                                                               int UseVElemInPlace);
 public static extern VMdlVModelStruct *VMdlSubdivideVElemToBezierVElements(
     VMdlVolumeElementStruct *VElem,
     TrivTVStruct *TV);
 public static extern VMdlVModelStruct *VMdlSubdivideVElement(VMdlVolumeElementStruct *VElem,
                                                              TrivTVStruct *TV,
                                                              TrivTVDirType Dir,
                                                              double t);
 public static extern TrimSrfStruct *VMdlFetchTrimmingSrfs(VMdlVolumeElementStruct *VMTrimmedTV);
 public static extern TrivTVStruct *VMdlFetchTrivar(VMdlVolumeElementStruct *VMTrimmedTV);
 public static extern MdlModelStruct *VMdlGetBndryVElement(VMdlVolumeElementStruct *VCell);