Problem Creating Seamless Fills - help needed!

[bluesplayer43]

I need some help to create a seamless bitmap fill. I have no problem creating a repeatable tile in Xara Extreme Pro 5, but when I create a bitmap copy and use that as a fill I always end up with a very fine white line around two edges of my bitmap. I have my main rectangle shape line thickness set at NONE, so I don't really understand why this is happening. I have my colour depth set to TRUE, and have tried various DPI settings from 96 to 300, and tried both anti-aliasing settings, but always end up with a similar result.

Any assistance greatly appreciated

[handrawn]

some suggestions:

make sure your bitmap size is in whole [even number] pixels

make sure your bitmap tiles are positioned so the xy coordinates on the page are in whole pixels

change your view setting to 'full colour' - in high/very_high quality settings xara will screen anti-alias, which is probably what you are seeing

if you still get a white line try zooming in and out - if at some zooms the line disappears, it may be your monitor anti-aliasing that is causing it to show [ie it may not actually be there when you print, or on another screen]

[gwpriester]

Welcome to TalkGraphics bluesplayer43

When working on website graphics, in Page Options set your Units to Pixels, (I also set my Color Units to RGB), and set your Grid and Ruler settings to Major Spacing = 100pix and Number of Sub Divisions to 10.

To display screen rulers (if they are not already displayed) press Ctrl L.

[Gamerprinter]

Actually, I've encountered this problem myself, now and again - as I often need to create seamless textures. When it happens. I crop the image slightly. The white space is some actual remaining space in the artwork, that seemed seamless to you in creation, but is still there. Crop it, that usually fixes the problem.

[mwenz]

If you crop it, make sure the cropping square/rectangle is in whole pixels.

Personally, I use the Photo type of document for tiles. I may well do the art on a regular page, but even if I do I copy the elements into a photo document and do the final sizing there.

Gary's seamless pattern tut:
http://www.xaraxone.com/tutorials/cr...rns-with-xara/

The discussion thread:
http://www.talkgraphics.com/showthre...Designer-Pro-X

Mike

[Scotty]

The dimensions of the tile image have to be even # in size I believe.
Jim

[Gare]

Right, Scotty.

1.) You can't have a seamless tile that is a fractional amount: 512.2 pixels by 512 pixels for example, because what Xara does when it makes a bitmap copy is it anti-aliased the edge of the fractional dimension with the background to quantize, to achieve a non-floating point value that can be saved to file.

Try this: once you have your design, copy it and then choose New>Blank Photo, drop it into this void of a space, and then export it. for some reason, this preset type rounds off fractional amounts and the result I bewlieve, will not have that nasty anti-aliased line in it.

Anti-aliasing in Xara is terrific 90% of the time, but it can be a deal-breaker when you want to export a seamless tile.

-g

[bluesplayer43]

I need some help to create a seamless bitmap fill. I have no problem creating a repeatable tile in Xara Extreme Pro 5, but when I create a bitmap copy and use that as a fill I always end up with a very fine white line around two edges of my bitmap. I have my main rectangle shape line thickness set at NONE, so I don't really understand why this is happening. I have my colour depth set to TRUE, and have tried various DPI settings from 96 to 300, and tried both anti-aliasing settings, but always end up with a similar result.

Any assistance greatly appreciated

Guys,

Thanks for the fast responses and assistance. I spent a while yesterday playing around with the suggestions and various settings and seem to have found a work-around.

I had been working within an ordinary A4-sized document, so switched to a 640 pix webpage. The trick is to use just the 96-dpi setting, all others produce too much noticeable anti-aliasing which seems to be the culprit for the borders on two sides.

Your pattern doesn't have to be square, ion fact the pattern I was creating a rectangle was more suitable anyway. I started with 60 x 40 pix dimensions and that worked fine. My pattern contains lines (I'm creating lithology pattern fills for a technical document), which I found don't produce well if a smaller rectangle is used. Half this size 30 x 20 pix worked OK too, but a 15 x 10 grid the antialiasing started giving noticeable borders again.

Perhaps another option of "No Antialiasing" is needed in Xara.

[handrawn]

Perhaps another option of "No Antialiasing" is needed in Xara.

that is what switching to 'full colour' setting does

[Egg Bramhill]

I always have minimise anti-aliasing selected when creating bitmaps.