In step 3 the controlling part of the experiment
is defined. 21st Century Project uses the concept of data flow, which allows
you to design an online evaluation as with an analog computer.
Dividing the special
source time by the import parameter A (experiment time) you get a linear
increase from 0 to 1 controlling the Y movement. This value is exported
as point 1. A logical comparison detects the end of the experiment and
an adequate
definition calculates the X movement to scan B lines. This second value
with the range from 0 to 1 is exported as point 2.