[XGC-17] Graphics2D ImageConverters make coordinate system assumption which is incorrect for AFP

• Type: Bug
• Status: Closed
• Resolution: Won't Fix
• Affects Version/s: 2.6
• Component/s: image codecs
• Environment: Operating System: Linux; Platform: PC
• Assignee: XML Graphics Project Mailing List
• Reporter: Adrian Cumiskey
• Created: 03/Nov/08 10:15
• Updated: 24/Jun/15 08:50
• Resolved: 04/Nov/08 09:24

Description

The ImageConverter*2G2D implementing classes in XG Commons make the assumption
when creating their Graphics2DImagePainter implementations that the coordinate system used by the Graphics2D implementation follows the 'Standard' bottom to top ascending x and left to right y ascending axis. This assumption is fine for most cases but in the case of AFPGraphics2D implementation the coordinate system is different and you have a descending y axis.

^ ------------------>

----------------->

Standard AFPGraphics2D (GOCA)

So for AFPGraphics2D you need to a different translation and scale AffineTransform matrix to paint correctly. At the moment this translation and scale preparation is hardwired inside the paint(Graphics2D g2d, Rectangle2D area) method of the Graphics2DImagePainter implementation/instance.

There needs to be a separation of concerns between the painting and the preparation for painting (which can be Graphics2D implementation specific).