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Readme Sources

This file discribes how to build the library pano13.dll
for the Windows operating system. This library is required
for running the Panorama Tools plug-in and any of the
Panorama Tools applications (PTStitcher, etc). 

Legal Issues:

This software is distributed under GNU-license, see the
file COPYING for details. Some parts of the software
are derived from other sources, which are distributed under
different copyrights. These are:
(1) The JPEG-library distributed by the Independent JPEG group.
This package contains a precompiled binary of the JPEG
library and the header files required for compilation
in the folder Sources/libs/. The legal terms for using the
JPEG library can be found in the file /copyright/README_JPEG.
(2) The PNG-library written by G.E.Schalnat et al.
This package contains a precompiled binary of the PNG
library and the header files required for compilation
in the folder Sources/libs/. The legal terms for using the
PNG library can be found in the file Sources/libs/png.h
(3) The TIFF-library by Sam Leffler/ Silicon Graphics Inc.
This package contains a precompiled binary of the TIFF
library and the header files required for compilation
in the folder Sources/libs/. The legal terms for using the
TIFF library can be found in the file /copyright/README_TIFF.
(4) The ZLIB-library by Jean-loup Gailly and Mark Adler.
This package contains a precompiled binary of the ZLIB
library and the header files required for compilation
in the folder Sources/libs/. The legal terms for using the
ZLIB library can be found in the file zlib.h.
(5) The public domain Levenberg-Marquardt solver 
of the Argonne National Laboratories MINPACK mathematical library,
C translation by Steve Moshier (file lmdif.c).
(6) Fast fourier transformation, code by:
RC Singleton, Stanford Research Institute, Sept. 1968
Copyright MJ Olesen, Queen's University at Kingston, 1995-97.
See the file fftn.c for details.


Requirements:

A working Mingw installation is required to build 
the library. Mingw comprises a free GNU-development
environment for Windows, which uses the Windows API
to build applications. The Compiler and tools can be
downloaded from www.mingw.org or one of its mirrors.

The following tools are required:
gcc - the GNU-C-compiler
make - GNU make
windres
dllwrap
strip
dlltool

The Java Development Kit 1.3 or later is required.
It can be downloaded from www.javasoft.com.
During the build of pano13.dll, the java include
files have to be accessed by the compiler.


Building the Library:

The source files of this distribution have to be unpacked.
The Makefile expects the MINGW-installation 
in the directory c:\mingw, include files for the
format libraries (jpeg,png,tiff) in c:\mingw\usr\include,
and the format libraries themselves in c:\mingw\usr\lib.
Adjust these paths to your needs, and issue
the command 'make -f makefile.win32 pano13.dll' inside the
sources directory. There will be a couple of warning
messages which are non-fatal and can be ignored.

Limits and Modifications:

This distribution of the sources limits processing
of fisheye images to fields of view smaller than
179 degrees. This limit is controlled by the constant
MAX_FISHEYE_FOV in the file filter.h. There
is some controversy regarding the legality of processing
hemispherical images (ie images having 180 degree field
of view) in connection with virtual reality panoramas.
If your application of fisheye lenses is not prohibited
by patents, you can build and use your own unlimited version 
of the library by changing the soure code.