/ RDLs
/ ISO 15926 Part 4: Core reference data - Edition 4
/ CURVE PAIR OFFSET BY REFERENCE DIRECTION
CURVE PAIR OFFSET BY REFERENCE DIRECTION
Definition
A object is a <ORDERED CURVE PAIR OFFSET BY REFERENCE DIRECTION> if and only if: it is a <ORDERED CURVE PAIR>; the first curve has a well-defined tangent direction at every point, so that in the case of a composite curve, each <CURVE AT END RELATIONSHIP> is a <CONTINUOUS SAME GRADIENT CURVE AT END>; the second curve is at a constant distance to the first curve in a direction as defined in ISO 15926 Part 3 Section 4.5.6.1