Given that sA, eA, dB are start time, end time and duration of event A, we have, for any two events, the interval [s,e] containing both defined by:
   s = min( sA, sB )
   e = max( eA, eB ) = max( sA+dA, sB+dB )

Thus, the condition for A and B happening withing an interval of duration D is:
  e - s <= D

You can put this expression into an eval() CE.

-W

On 13 January 2011 15:45, Tina Vießmann <tviessmann@stud.hs-bremen.de> wrote:

Hi,

I'm trying to find a easy way to express that two events A and B have to
happen during the same time interval. The events  have each a duration >
0.

A example condition could be: The event A and B have to happen during the
same 60 seconds.
For me it includes several possibilites:
 * A can start before B and
    ~ end before B starts
    ~ end during B
    ~ end after B ends
 * The same can be possible for B
 * A and B start/end/both at the same time
In any case the maximum duration from the first start time to the last end
time is e.g. 60s.

Is there a easy way to express that. I can only think of specifying the
several possibilities as conditions.

Thank you! :)
Tina


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