[Openroad-users] Clickpoint problems with SegmentShape

[Antill, Jim]

Hi,

I'm having quite a bit of difficulty accurately detecting a childclickpoint
event on a segment shape within a composite and was wondering if anyone else
had found a solution to similar problems. I'm using OR4.0 .

The problem seems to be that when a childclickpoint event is detected the
formfield itself doesn't pick the event up. Rather the coordinates of the
clickpoint are taken and the array of fields within the composite gone
through to find the first field that contains the clicked on position. That
works pretty well for rectangular shapes (as most OpenROAD fields are).
However, in the case of segment shapes it seems that a box is formed from the
start and end points and points within this are checked rather than points
that fall on the line itself. So if you have segments that are close to each
other, but not overlapping, the wrong segment is invariably picked up. I have
some example code here that demonstrates the problem. If anyone is interested
I'll post it up.

More worryingly this can result in code being fired in error as any
clickpoint code behind the segmentshape that OpenROAD mistakenly thinks was
clicked is then executed.

As you can imagine this leads to severe problems when doing things such as
Pie Charts which isn't an unusual requirement. I have tried to use MSGraph in
the past but had a number of issues with it's behaviour with OpenROAD (mainly
due to sizing). This might be improved with OR2006 I guess.

So, my questions are: Does anyone know whether this behaviour will be changed
in OR2006, will we be given better drawing tools in the near future e.g draw
a filled arc in a circle etc. and has anyone a favourite alternative to
graphing that allows interaction between the graph and OpenROAD?

Thanks for any advice.

Regards,
Jim

************************

This message has been delivered to the Internet by the Revenue Internet e-mail service (OP)

*************************