Positioning by centre of circle

neilw · Postby **neilw** » Tue Apr 23, 2013 6:38 am

Hello,
I'm drawing a large number of circles and wish to have their co-ordinates set (i.e. the origin) by the centre of the circle. But all it seems to do is use bottom/left, which seems daft when it comes to circles (IMHO).

Is there any way to change this? I also need to get centre-point positions for shapes that I've drawn by hand so centre-origin again is required so I can simply click on the circle and get it's x/y (otherwise I'll have to get my calculator out for every circle to work out the half-way points).

thanks.

ragstian · Postby **ragstian** » Tue Apr 23, 2013 6:47 am

Hi

Enable this in the snap toolbar; Snap- Centers of objects;

Good Luck.
RGDS
Ragnar

Lazur · Postby **Lazur** » Tue Apr 23, 2013 6:55 am

Here is another method described in the attachment, with the use of the align and distribute panel.
With that, you can get coordinate values as well.

Edit: Wasn't sure of what went wrong, here is a more detailed description than the previous.

ragstian · Postby **ragstian** » Tue Apr 23, 2013 7:28 am

Hi Lazur

What is this "attachment" word in the text linked to ???
Hijacked site??

Screendump;

Most annoying POS ever!

RGDS
Ragnar

neilw · Postby **neilw** » Tue Apr 23, 2013 7:48 am

Hello,
I'm doing that, but what I want is to get the x/y co-ordinate of a shape from it's centre point. If you can place and draw an object by it's centre point (as mentioned above and what I'm doing) then surely you can get it's x/y position from the centre-point too? After drawing a shape, clicking on it shows it's x/y as the bottom left.

Thanks.

Lazur · Postby **Lazur** » Tue Apr 23, 2013 8:08 am

Here is another method, if you want to know only the centre coordinates.

neilw · Postby **neilw** » Tue Apr 23, 2013 8:32 am

Why are you posting malware to threads LAZUR URH?

v1nce · Postby **v1nce** » Tue Apr 23, 2013 9:02 am

Lazur URH is not to blame, just some stupid javascript of an ad campaign that replace keyword by some link of its own.

v1nce · Postby **v1nce** » Tue Apr 23, 2013 9:04 am

Test to see if the word attachment is hijacked by some javascript.

ragstian · Postby **ragstian** » Tue Apr 23, 2013 9:16 am

Hi.

Lazur URH is not to blame, just some stupid javascript of an ad campaign that replace keyword by some link of its own.

Where are the code hiding? Is it on the forum server or on our own machines? Or somewhere in between?

RGDS
Ragnar

Lazur · Postby **Lazur** » Tue Apr 23, 2013 9:22 am

I have no idea, chrome didn't load such ads here.
But if it would, then browsing on firefox, the adblocker add on could get rid of it.

v1nce · Postby **v1nce** » Tue Apr 23, 2013 9:30 am

Lazur URH wrote:I have no idea, chrome didn't load such ads here.
But if it would, then browsing on firefox, the adblocker add on could get rid of it.

Same here. Tested on Chromium (ubuntu 12.04) and opera : no link

: chromium.jpg (54.58 KiB) Viewed 25322 times

Postby **druban** » Tue Apr 23, 2013 10:07 am

BobSongs · Postby **BobSongs** » Tue Apr 23, 2013 10:15 am

neilw wrote:Hello,
I'm drawing a large number of circles and wish to have their co-ordinates set (i.e. the origin) by the centre of the circle. But all it seems to do is use bottom/left, which seems daft when it comes to circles (IMHO).

To draw a circle and have it grow from the point where you first click the mouse, hold down the left Ctrl and Shift keys simultaneously. Click the drawing area where you wish the centre of the circle to be and drag the mouse in any of these directions: south-east, south-west, north-east, north-west.

The Ctrl key creates a circle rather than an ellipse. The Shift key grows it from the starting point.

neilw wrote:Is there any way to change this? I also need to get centre-point positions for shapes that I've drawn by hand so centre-origin again is required so I can simply click on the circle and get it's x/y (otherwise I'll have to get my calculator out for every circle to work out the half-way points).

thanks.

The way to find the centre-point for an object created is to click it once, then, click it a second time so that the control handles in the four corners become rounded arrows. A small + should appear in the centre of the object.

Please note: That + marker is the point around which the object rotates if rotation is desired. Moving it will not move the object. The + disappears as the object is moved, but will remain if the object is rotated.

Changing a tool’s defaults: double-click its icon on the left side of the work area. From my observation, however, the default way to create circles cannot be changed at that point.

ragstian · Postby **ragstian** » Tue Apr 23, 2013 11:10 am

Hi.

Druban - you're even worse!!

If the malware are on my computer - how come it's only this thread that's affected?

RGDS
Ragnar

ragstian · Postby **ragstian** » Tue Apr 23, 2013 11:47 am

Hi.

Found a recently installed program called "Fast Free Converter" on my machine.

After uninstalling this POS the active links seems to be gone.
( Did also clear all history, cache and cookies - can have been lurking in there as well! )

How it managed to get installed on my machine is beyond me!

RGDS
Ragnar

Postby **brynn** » Tue Apr 23, 2013 11:52 am

I'm not seeing any text links from Firefox. But I do see it on Ragnar's screenshot. Some of you guys are way more technically aware than I am. But my responsibility at this point is to decide whether to alert the admin to potential security issues for the forum. From my point of view, this shouldn't be happening on a secure forum, regardless of individual members' or visitors' system/internet security. On the other hand, microUgly does use advertising on this forum, presumably to raise income.

Is this advertising, or is it malware? I realize some people (like me) consider advertising to be a form of malware. But if it's purely advertising, I'd say get a good ad blocker. Maybe the reason I don't see it is because I've got ads blocked for InkscapeForum?

Ragnar, you posted while I was typing. You're not the only one who sees this. The op reported the posts, so apparently he sees them too.

Postby **brynn** » Tue Apr 23, 2013 1:22 pm

Ragnar and anyone else: http://malwaretips.com/blogs/remove-text-enhance-virus/

PS -- And thanks to those who managed to answer the question amidst all the drama, lol!

BobSongs · Postby **BobSongs** » Wed Apr 24, 2013 12:22 am

I never allow the drama of a forum to bother me.

Now, STOP YELLING, PEOPLE!!!!

Whups!

ju-u-u-u-ust kidding.

My way of dealing with spammy websites:

Firefox > Ctrl+Shift+A (addons) > install Adblock Plus. The same addon is available for Google Chrome and Seamonkey, but I don't know if it works on any further browsers. I have my doubts whether Internet Explorer has anything comparable to it.

If the junk can’t get in in the first place, there’s less work for your protection software to do.

P.S. :: This forum is one of the kindest, calmest forums I’ve seen. To have a little hubbub like the above? It’s more “cute” than anything else.

Grobe · Postby **Grobe** » Wed Apr 24, 2013 1:56 am

We'll se what happens with my posts. NoScript should kill any spem anyway

Anyway, another Inkscape tip: The center on a circle will not snap to other objects if the fill is completely transparent.

neilw · Postby **neilw** » Wed Apr 24, 2013 5:38 am

Hello,
Sorry, I don't know if I'm not making myself clear or if I missed the answer with all the malware

I know how to place and draw a circle from a centre point, what I want is to click on a circle and get it's x/y position at it's centre, not it's bottom left as it is showing me now. If you can place a shape and extend out from a centre surely a good option is to let you get that position back?

Thanks.

Lazur · Postby **Lazur** » Wed Apr 24, 2013 5:45 am

All answered in the ATTACHED svg-s.

neilw · Postby **neilw** » Wed Apr 24, 2013 5:55 am

Thanks, I didn't download your attachment as last time it had malware and my computer threw a wobbler when I clicked on it

As for your answer, I guess that means you can't do it easily. In my case it's easier to get the X and add half the width in a calculator. Maybe the best option is if I take the time out to look at the plugin api.

ragstian · Postby **ragstian** » Wed Apr 24, 2013 6:18 am

Hi

what I want is to click on a circle and get it's x/y position at it's centre, not it's bottom left as it is showing me now.

You can see the X and Y coordinates in the XML editor - Shift + Ctrl + X

Be aware that the Coordinates are the SVG coordinates ( Where the origin is in the upper left corner ).
What's shown on the rulers along the canvas is Inkscape "user" coordinates.
http://tutorials.jenkov.com/svg/svg-coordinate-space.html

Good Luck
RGDS
Ragnar

Lazur · Postby **Lazur** » Wed Apr 24, 2013 6:20 am

neilw wrote:Thanks, I didn't download your attachment as last time it had malware and my computer threw a wobbler when I clicked on it

As for your answer, I guess that means you can't do it easily. In my case it's easier to get the X and add half the width in a calculator. Maybe the best option is if I take the time out to look at the plugin api.

That is by few clicking.
I have no idea how typing in five or more digits and calculating it is faster to you.
Easier than the one with the scaling down with 50% method. I can't belive it.

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