Function IGetUVBounds() As System.Double

Dim instance As IFace2
Dim value As System.Double
 
value = instance.IGetUVBounds()

System.double IGetUVBounds()

System.double IGetUVBounds(); 

Return Value

• in-process, unmanaged C++: Pointer to an array of doubles (see Remarks) 

The return values bound an area of the surface in which the face is defined. You can determine the surface U, V bounds using ISurface::Parameterization or ISurface::IParameterization.

The returned data is an array of 4 doubles arranged in the following order:

retval[0] - Minimum U parameter of this face

retval[1] - Maximum U parameter of this face

retval[2] - Minimum V parameter of this face

retval[3] - Maximum V parameter of this face

The minimum parameters are always less than the maximum parameters, and the range (for example, retval[1] - retval[0] and retval[3]-retval[2]) is always less than or equal to the U and V range of the underlying surface.

For surfaces with periodic parameters, the face parameter box can never be larger than the period of the corresponding surface parameter.

uRange[0] <= retval[0] < uRange[1]

vRange[0] <= retval[2] < vRange[1] 

where uRange and vRange describe the UV range of the surface

Therefore, a face that straddles the boundary of a periodic parameter has an upper parameter value for the face that is greater than the upper parameter range of the surface.