How to find out the image center and its x,y co-ordinate using java ?

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I'm trying to rotate image matrix 45,90,180,270 and 360 using java language
so i will apply the equations in next link to rotate matrix

http://homepages.inf.ed.ac.uk/rbf/HIPR2/rotate.htm[^]

but i think (x0,y0)are the co-ordinate of the center of image
i need to calculate this center
If anyone could help that would be great!

Regards!

Posted 30-Mar-14 0:14am

Bebo_1

Updated 30-Mar-14 0:29am

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OriginalGriff · Answer 1 · 2014-03-30T00:19:00

Solution 1

Center is easy:

X Center: X(Top Left) + (Width / 2)
Y Center: Y(Top Left) + (Height / 2)

Posted 30-Mar-14 0:19am

OriginalGriff

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Bebo_1 30-Mar-14 6:27am

but how i can find out top left using java ?
Regards

OriginalGriff 30-Mar-14 6:33am

Well, if you are just looking at the image in isolation, then it's zero, zero...

If you are looking at it relative to a from, or screen, then it's the location of the image (these are generally TLHC these days)

Bebo_1 30-Mar-14 6:41am

Thank you for your attention !
but i still don't under stand :(
If you could clear more that would be great!
reagards

Maciej Los 30-Mar-14 7:04am

+5!

Maciej Los · Answer 2 · 2014-03-30T01:03:00

Solution 2

Have a look at similar question at SO: http://stackoverflow.com/questions/14300520/rotate-image-in-overriden-paintcomponent-method[^]. There you'll find complete code ;)

Posted 30-Mar-14 1:03am

Maciej Los

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Bebo_1 30-Mar-14 7:09am

Really Thanks, I will try it !
Regards :)

Maciej Los 30-Mar-14 7:18am

You're welcome. If it would be helpful, please, mark this answer as a solution (green button).

Bebo_1 30-Mar-14 7:32am

sure :)