[Gzz-commits] fenfire/org/fenfire/modules/pp PPCanvasCursor.java

[Tuomas J. Lukka]

CVSROOT:        /cvsroot/fenfire
Module name:    fenfire
Changes by:     Tuomas J. Lukka <address@hidden>        03/04/23 11:49:48

Modified files:
        org/fenfire/modules/pp: PPCanvasCursor.java 

Log message:
        doc

CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/fenfire/fenfire/org/fenfire/modules/pp/PPCanvasCursor.java.diff?tr1=1.21&tr2=1.22&r1=text&r2=text

Patches:
Index: fenfire/org/fenfire/modules/pp/PPCanvasCursor.java
diff -u fenfire/org/fenfire/modules/pp/PPCanvasCursor.java:1.21 
fenfire/org/fenfire/modules/pp/PPCanvasCursor.java:1.22
--- fenfire/org/fenfire/modules/pp/PPCanvasCursor.java:1.21     Wed Apr 23 
10:40:50 2003
+++ fenfire/org/fenfire/modules/pp/PPCanvasCursor.java  Wed Apr 23 11:49:47 2003
@@ -22,7 +22,7 @@
 /** PPCanvas which has been selected/created to be the focus one.
  */
 public class PPCanvasCursor implements BuoyViewMainNode {
-private static final String rcsid = "$Id: PPCanvasCursor.java,v 1.21 
2003/04/23 14:40:50 mudyc Exp $";  
+private static final String rcsid = "$Id: PPCanvasCursor.java,v 1.22 
2003/04/23 15:49:47 tjl Exp $";  
     public static boolean dbg = false;
     private static void p(String s) { if (dbg) pa(s); }
     private static void pa(String s) { 
System.out.println("PPCanvasCursor::"+s); }
@@ -165,14 +165,27 @@
        }
        
        if (GraphicsAPI.getInstance() instanceof GLAPI) {
-           c2fCS = vs.orthoCS(0, "C2F",0,0,0, 10,10);
+
+           // Create the coordinate systems for the viewport.
+           // c2fCS = Canvas to frame, i.e. 
+           // the transformation from canvas coordinates
+           // to frame coordinates. Used for panning and zooming.
+           // Now, it is important that it is
+           // 1) transformation-descended from 0, since it is
+           //    just the pan-zoom part
+           c2fCS = vs.coords.ortho(0, 0,0,0, 10,10);
+           // 2) Child of "into", for correct interpolation.
            vs.matcher.add(into, c2fCS, "C2F");
+
+           // The inverse of the previous transform; same
+           // rules apply.
            int c2fCSInv = vs.orthoCS(0, "C2FINV",0,0,0, 10,10);
            vs.matcher.add(into, c2fCSInv, "C2FINV");
            
            setZoomPan(vs, into);
            SinglePaper.i(fen, node, window, nodeview)
                .render(vs, into, c2fCS, c2fCSInv, hook);
+
        } else {
            int zo = (int)(zoom * 100000);
            int geometry = vs.orthoBoxCS(into, "FocusGeometry",0, zo,0, 1,1, 
-panx, -pany);