/[gzz]/gzz/doc/pegboard/vobcoorder_culling--humppake/peg.rst
ViewVC logotype

Diff of /gzz/doc/pegboard/vobcoorder_culling--humppake/peg.rst

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 1.5 by humppake, Mon Nov 11 15:39:27 2002 UTC revision 1.6 by humppake, Tue Nov 12 06:37:57 2002 UTC
# Line 21  Changes Line 21  Changes
21  Into ``gzz.vob.VobCoorder`` add::  Into ``gzz.vob.VobCoorder`` add::
22    
23          /** Creates a CullingCoordSys with distinct parent and test          /** Creates a CullingCoordSys with distinct parent and test
24           * coordinate systems. The CullingCoordSys works mainly as its           * coordinate systems. Exluding the test for drawing, the
25           * parent CoordSys. Although, it will be drawn always when boxes           * CullingCoordSys works like its parent CoordSys.
26           * of its test and clip coordinate systems do intersect. When           *
27           * the boxes don't intersect, the CullingCoordSys should not be           * This coordsys will not necessarily be drawn if the boxes
28           * drawn.           * of the test and clip coordinate systems do not intersect.
29           * @param parent ID of the coordinate system which points which           * However, this is not guaranteed; the only thing guaranteed
30           *               points will be transformed, if CullingCoordSys           * is that if the boxes of the test and clip coordinate systems
31             * *do* intersect, the CullingCoordsys will be drawn.
32             *
33             * @param parent ID of the coordinate system which points
34             *               will be transformed, if CullingCoordSys
35           *               is shown           *               is shown
36           * @param test ID of the coordinate system which box is tested           * @param test ID of the coordinate system whose box is tested
37           *             against the clip coordinate system.           *             against the clip coordinate system.
38           * @param clip ID of the coordinate system which box is tested           * @param clip ID of the coordinate system whose box is tested
39           *             against the test coordinate system.           *             against the test coordinate system.
40           */           */
41          public int cull(int parent, int test, int clip) {          public int cull(int parent, int test, int clip) {
42          }          }
43    
44          /** Creates a CullingCoordSys using the parent also as the test          /** Creates a CullingCoordSys using the parent also as the test
45           * coordinate system. In practise, this could be only a shorthand,           * coordinate system.
          * which returns a call cull(parent, parent, clip).  
46           */           */
47          public int cull(int parent, int clip) {          public int cull(int parent, int clip) {
48              cull(parent, parent, clip);
49          }          }
   
 After changing ``gzz.vob.VobCoorder`` these methods should also be  
 implemented in all implementing classes, which inherit  
 ``gzz.vob.VobCoorder``. Because culling is already implemented in  
 ``gzz.gfx.gl.GLVobCoorder``, currently classes left seem to be:  
   
 * ``gzz.vob.impl.OrthoCoorder``  
     
   **NOTE:** ``CullingCoordsys`` is currently implemented only on the  
   C++ side, but ``OrthoCoorder`` is not allowed to use JNI. *Dummy*  
   ``CullingCoordSys`` can be implented on the Java side as  
   ``translate(parent, 0, 0)``.  

Legend:
Removed from v.1.5  
changed lines
  Added in v.1.6

savannah-hackers-public@gnu.org
ViewVC Help
Powered by ViewVC 1.1.26