true if and only if (|majorRadius - |minorRadius|| < OdGeContext::gTol.equalVector()).

Checks if (|majorRadius - |minorRadius|| < OdGeContext::gTol.equalVector()), producing a doughnut. with a zero-radius hole.

Exactly one of the following functions will be true for a given torus:

• isApple()
• isDoughnut()
• isLemon()
• isVortex()

OdGeTorus Methods