How to know if a moving 3d point has passed dest.

[helix1405241470 0]

Let's say you have an object starting from pos0 and moving to dest0. How do you know if it has reached (or past) dest0 when at currPos?float lenToPos = vec3Length( currPos - pos0 );float totalLen = vec3Length( dest0 - pos0 );if( fabs(totalLen) <= fabs(lenToPos) ){// Reached or exceeded destination}