CS4 and CS5 Page coordinates

[flash_test_dummy]

It seems the page coordinate system has been changed in CS5. If you create a new document in CS4 the origin is the bottom left of the page. If you do the same thing in CS5, the origin is the top left of the page. If you use AIDocumentSuite::GetDocumentCropBox in the SDK you get:

CS4

left = 0

top = height

right = width

bottom = 0

CS5

left = 0

top = 0

right = width

bottom = -height

Does anyone have any information on why this change was made and what is likely to happen in future versions?

Thanks

[weiguo]

Putting ruler oritin at top-left corner is the behavior of many other applications, such as InDesign and Photoshop. Illustrator changes its ruler origin in CS5 so that it follows same convention as other applications. This is described in Illustrator CS5 porting guide and scripting guide. (You can download from http://www.adobe.com/devnet/illustrator.html.)

There is no plan of changes in future versions.

[pvanderh]

Is this what would cause false coordinates? Example: If Ichange the zero orientation to the bottom of the art board the coordinates for any item placed in the artboard and above the zero is now, in CS5, a negative number. This is conrary to almost all rational charting. Since childhood we have learned that (in plane thinking) vertical to the zero is poistive and that below zero is negative. Left of the zero is negative and right of zero is positive. It seems that CS5 now goes along with the left and right case but oposite to the vertical case. Can this be changed by the user?