true if and only if the parametric interval of the curve is bounded and the value of the coef variable lies within [0; 1].

Checks the boundaries of the curve interval and calculates a point from the curve interval that corresponds to the specified coefficient. 

The value of the coef variable must be within [0; 1], where

• 0 is the beginning of the curve interval,
• 0.5 is the middle of the curve interval,
• 1 is the end of the curve interval.

OdGeCurve3d Methods