Xara's Nudging and Grid do not seem to work hand in hand?

[Nostaw]

That isn't your grid point, what you are seeing is the object selection bound handle (blob). A grid point will not show that large at such high magnification.
You can colour the rectangle then add an 0.25pt line and see the grid point is on the line centre point. Seems to be dead on grid in my Designer Pro X9

Are you sure you turned the grid on ('Show Grid' or keyboard shortcut ".")? You can also turn the view quality to 0 and then check again. The Xara file I uploaded didn't use an outline color, just a solid fill. I checked with Xara Xara Prov8 on another machine and I can confirm this behaviour since at least version 6 on at least 3 different machines.


Please try the xara file attached:
Attachment 97219

You can make this more evident: Hold shift and press the cursor keys: 20xleft, 20xdown.
Select the Square and move it slightly, you should see it will snap back to the top left corner. It wouldn't snap if it was aligned already.

[Big Frank]

really sorry harry but i'm just not getting that error on my pc

[steve.ledger]

Are you sure you turned the grid on ('Show Grid' or keyboard shortcut ".")?

Yes..

Here's your square again, unselected and coloured yellow so you can see the grid point.

[Nostaw]

OK, did you try nudging holding shift and cursor keys: 20xleft, 20xdown? Turn Snap to grid back on and then move the object slighty and -zap- it will snap (might be a very subtly movement, but it will move!).

[Big Frank]

OK, did you try nudging holding shift and cursor keys: 20xleft, 20xdown? Turn Snap to grid back on and then move the object slighty and -zap- it will snap (might be a very subtly movement, but it will move!).

yes!

you are spot on my old cheese
it happened to me too
and on that note i'm off to bed
but i agree you have found a bug
you have to look bloomin hard to spot it
but i agree with you

[steve.ledger]

OK, yes I can repeat this too with the 20x20 nudging steps.

Mods: This thread might be best moved to the Dear Xara.. forum where devs check more frequently.

[Nostaw]

Thanks guys! I wasn't looking forward of taking several screenshots on various different machines of previous and latest versions of Xara *phew*.

I hope this issue isn't related to the line-to-shape problem reported in 2006, as they both seem to be some kind of internal rounding issues(?).
http://www.talkgraphics.com/showthre...pe-bug-problem

[Big Frank]

good on you
well spotted

[Nostaw]

Contacted Xara about this and no reply either. Oh well.

[PhilM]

Hi Nostaw,

Sorry for the lack of response until now.

This issue is caused by a maths accuracy problem: The program stores the nudge size in millipoints but 2mm is not a whole number of millipoints - there's a fractional part which gets lost when the nudge size is stored. Then when you perform multiple nudges this tiny lost fractional part gets multiplied up too and becomes visible in the on-screen position of the object. (The grid positions are stored and computed using higher precision values and so they are in the correct place.)

Phil