The TIN have been created using max length = rDUMMY to ensure that the TIN has a convex hull (otherwise the routine that locates the triangle for a given location may fail). The TIN must also have been created using the Z values. Values located outside the convex hull are set to rDUMMY. The method is based on the following paper: Sambridge, M., Braun, J., and McQueen, H., 1995, Geophysical parameterization and interpolation of irregular data using natural neighbours: Geophysical Journal International, 122 p. 837-857.

public void InterpVV(
	CVV oVV1,
	CVV oVV2,
	CVV oVV3
)

Public Sub InterpVV ( 
	oVV1 As CVV,
	oVV2 As CVV,
	oVV3 As CVV
)

public:
void InterpVV(
	CVV^ oVV1, 
	CVV^ oVV2, 
	CVV^ oVV3
)

member InterpVV : 
        oVV1 : CVV * 
        oVV2 : CVV * 
        oVV3 : CVV -> unit