The A to B segment is made of a two tracks, the mid point connection is easy to find.
Both Examples above are Good.
BAD Routing example below for Net length Analysis.
AB segment is made of a single track, the mid point connection can NOT be found.
Where does the vertical section intersect the A to B segment ? There is a bit more complexity involved. For example let look at another case below.
Again A to B is single trace segment which is intersected by C. What's the distance from A to C, and B to C ?
Determining the 'To From' lengths will be simplified if there are 3 trace segments as shown below.
Using Altium's PCB Panel and From-To feature with a Starburst Pattern or Daisy Simple, we can display the lengths of the segments from A to C and from B to C.
Let's look at how we can mess up this From to measurement.
As shown below a via has been added and the traces do not meet in the middle of the via.
The measurements are now wrong.
Now, Let's do it right.
As shown below the line segments now all meet at the center of there intersections.
The grid shown above is 50 mils.
Now the measurements are correct,
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