Check out these methods, they may give you what you want. Graphics2D.getTransform();
AffineTransform.inverseTransform(...) Ted Hill > -----Original Message----- > From: Discussion list for Java 2D API [mailto:JAVA2D- > [EMAIL PROTECTED] On Behalf Of Richard Kennard > Sent: Thursday, May 13, 2004 6:29 AM > To: [EMAIL PROTECTED] > Subject: [JAVA2D] Retrieving 'untransformed' co-ordinates of a transformed > point > > Dear All, > > Is there a way to retrieve the untransformed, 'absolute' co-ordinates of a > point from a transformed Graphics2D context? > > For example, if I set up a BufferedImage 250x250, grab its Graphics2D > object, perform a bunch of AffineTransforms on it (translate, rotate, > etc.) > and then plot a pixel at co-ordinates (0,0) that pixel will obviously not > appear, in the grand scheme of things, at 'absolute' (0,0) within the > BufferedImage as a whole. In pseudo-code... > > Image image = new BufferedImage( 250, 250 ); > Graphics2D g = image.getGraphics(); > g.translate(100,100); > g.setPixel( 0, 0, Color.black ); > > ...this would generate a pixel that, 'in the grand scheme of things' is > actually at point (100,100) within the BufferedImage, even though I > plotted > it at point (0,0). > > Is there any way I can determine what point (100,100) 'means', in > untransformed terms? I can only assume the Graphics2D object must be doing > something along these lines 'behind the scenes', but is there anyway I can > get at the equivalent 'untransformed' co-ordinate? > > Many thanks in advance, > > Richard. > > ======================================================================== == > = > To unsubscribe, send email to [EMAIL PROTECTED] and include in the > body > of the message "signoff JAVA2D-INTEREST". For general help, send email to > [EMAIL PROTECTED] and include in the body of the message "help". =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA2D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
