SYNOPSIS:
    MEASURE_CURVELEN startvec endvec bucketwidth targetcol

DESCRIPTION:
    Measure a curved line in the current volume that starts and ends at
    the given vectors.

    ATTENTION: The vectors are given in camera coordinates!
    During the measurement, the curved line needs to be remarked to
    targetcol.

    The command works by splitting the line of sight between the
    endpoints into a series of "buckets" and putting the found
    voxels into these buckets. The bucketwidth should be chosen
    high enough, that a significant amount of voxels fall into
    each bucket (otherwise measurement can fail or deliver far too
    high results due to slight jitter on the line), but low enough
    to approximate the line precisely enough.

    For the command to work properly, it is assumed, that the curved
    line tangential vector will always be at an angle of -90..90
    with respect to the line of sight. It is recommended that values
    near 90 are to be avoided, as they reduce precision. Subdivide
    the line, if needed.

SEE ALSO:
    vector, MARKCC_CONNECTED, FIND_COG
