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sub

The subtract operator “sub” (-, operator$sub) by default overloaded for VecMath and chem.

VecMath

For vector mathematics the add operator is used for the different vectors and points:

Vector3f a = new Vector3f(0,1,2);
Vector3f b = new Vector3f(0,2,3);
 
println(a - b); //(0.0, -1.0, -1.0)
println(a - a - b); //(0.0, -2.0, -3.0)

This can be combined between vectors and points of the same dimension. E.g. Point2f and Vector2f or Point2d and Point2f.