MbRect1D Univariate Dimension
The MbRect1D class is declared in the mb_rect1d.h file.
The MbRect1D univariate dimension describes a one-dimensional area, for example, a curve parameter domain, and it is defined by two numbers: zmin and zmax:
The zmin and zmax numbers define the start and the end boundary of the area. If a one-dimensional area is not defined, then the univariate dimension is considered empty and zmin > zmax. For an empty univariate dimension, the IsEmpty() method returns true.