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View Full Version : Lines with arrows vanish sometimes if you zoom in



Naryoril
11-29-2006, 07:18 AM
I'm writing a program for transport logistics, where vehicle routes are displayed as a series of arrows. But sometimes these arrows vanish if I zoom as far as possible. I have no idea what's the criteria for this to happen. Does anyone know more about this?

Wilfried
11-29-2006, 09:47 AM
Hi,

I have no answer, but can you try to find out when exacly they dissapear ? Mabye if you zoom in that no begin / end point is visible, or maybe other condition ? Sure we can find some workaround (I hope), but we have to try to find out more of the reason furst.

Naryoril
11-29-2006, 02:28 PM
Well, that's the big problem. I have no idea when it happens. I tested arount for about 3 hours, zooming in and zooming out and a looking at a lot of arrows, but i couldn't find anything they had all in common (and the others not). The only thing i found out is, that this doesn't happen if they don't have an arrow.
And if a line disapperas, it disapperars everywhere, at the end, at the beginning and in between

Wilfried
11-30-2006, 02:12 PM
Hi,

What is the IDE / language you programming in ? (I ask because maybe I have a little time to search out the problem).

Naryoril
12-01-2006, 05:58 AM
VC++ in VS 2005

Wilfried
12-01-2006, 08:32 AM
Hi,

Can you make me a simple project that demonstrate the behavour ? Only relevant code to demonstrate please. Then please email it private. I will try when I have some spare time and answer here on the forum.