jrosenthal / layers3pdf Goto Github PK

It appears based on looking at the results of LPTS with variants on 20,20-
40,40 coords, that 0,0 for LPTS is actually the lower left.

(Test as follows... LPTS 0,0,1,1 - so, either: 
0,0 bottom left - GPTS 20,20,40,40, or: 
0,0 top left - GPTS 20,40,40,20

20,40,40,20 produces a clearly flawed pdf)

If one uses real data, from the portrait sample, given 0,0 bottom left, and 
then reads and plots the corner coordinates from the PDF, one finds that 
they are rotated approx 45 degrees clockwise from their correct position as 
shown in the picture attached.


Note also, that LPTS is definitely subject to rotation by 
landscape/portrait.  In portrait 0,0 appears to be bottom left, in 
landscape its top left.

We should add user control of layer.setOnPanel

on_panel= as boolean (0,1) default true

We should allow a use to set a layer as locked (ie: appears on panel with a
little locked icon instead of a checkbox).  This functionality is currently
not supported in iText, however Bruno Lowagie has said it will be present
in 2.1.2 (due to be released by 19 May at the latest).

locked= as boolean (0,1) default as false

[deleted issue]

Users should be able to set multiple input PDFs to be part of a single
layer.  ie: merge rivers and lakes to produce a hydrology layer, with a
single checkbox and set of rules.

merge_to=  Accepts another layer's name.  Case sensitive, accepts white
space in name.

* We should allow chained merge_to statements
eg:   
name=A|merge_to=C
name=B
name=C|merge_to=B

* How should the program deal with loops?  Merge none?
eg:
name=A|merge_to=C
name=B|merge_to=A
name=C|merge_to=B.