2006-08-22  Al Riddoch  <alriddoch@zepler.org>

	* configure.ac: Increment version number.

	* NEWS: Update news.

	* Release 0.2.5

2006-01-03  Al Riddoch  <alriddoch@zepler.org>

	* configure.ac, Mercator/iround.h, Mercator/GrassShader.cpp,
	  Mercator/Segment.cpp: Add macro for absolute value of floating
	  point numbers. Check for fabsf() and fall back to fabs() on non
	  C99 systems.

2005-12-02  James Turner  <james@worldforge.org>

	* Add X-Code 2.0 project file (ProjectBuilder project will be deleted
	  shortly).

2005-07-13  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/BasePoint.h: Re-order "const static" to "static const"
	  to eliminate some warnings.

2005-06-16  Al Riddoch  <alriddoch@zepler.org>

	* configure.ac: Increment version number.

	* NEWS: Update news.

	* Releases 0.2.4

2005-06-14  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/DepthShader.cpp, Mercator/DepthShader.h,
	  Mercator/GrassShader.cpp, Mercator/GrassShader.h,
	  Mercator/ThresholdShader.cpp, Mercator/ThresholdShader.h:
	  Move static variable definitions into the cpp files, as gcc 4
	  isn't happy otherwise.

2005-06-11  Al Riddoch  <alriddoch@zepler.org>

	* configure.ac: Increment interface version.

	* NEWS: Update NEWS.

	* Release 0.2.3

2005-06-02  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/DepthShader.cpp, Mercator/DepthShader.h,
	  Mercator/GrassShader.cpp, Mercator/GrassShader.h,
	  Mercator/ThresholdShader.cpp, Mercator/ThresholdShader.h:
	  Rename static variables that hold parameter key strings
	  to be prefixed with key_. Add static variables to hold the
	  default values of parameters. Make sure the default values
	  of parameters are set in the constructor that takes named
	  paramters. Add accessors for all shader parameters.

	* tests/testShaderFactory.cpp: Add code to test whether shaders
	  correctly  set their paramaters when passes in as named paramters.
	  Includes check to make sure parameters all default to the right
	  value.

2005-05-28  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/GrassShader.cpp: Added missing static variable definitions.

2005-05-28  Al Riddoch  <alriddoch@zepler.org>

	* configure.ac: Increment version for dependency handling.

	* Mercator/DepthShader.h, Mercator/GrassShader.h,
	  Mercator/ThresholdShader.h: Add static string variable declarations
	  for parameter names for shaders that take parameters. Provide a more
	  in depth explanation of the algorithm used by GrassShader.

	* Mercator/DepthShader.cpp, Mercator/FillShader.cpp,
	  Mercator/GrassShader.cpp, Mercator/ThresholdShader.cpp:
	  Implement the code in the Parameters version of the constructor
	  to set the parameters of the shader by named values.

2005-05-24  James Turner  <james@worldforge.org>

	* Mercator/Area.cpp: fix ::checkIntersect to handle the case where
	  the Area is fully contained by a segment.

2005-05-18  Al Riddoch  <alriddoch@zepler.org>

	* tests/testWFMath.cpp: Clear up some of the reporting.

2005-05-18  Al Riddoch  <alriddoch@zepler.org>

	* tests/testWFMath.cpp, tests/Makefile.am: Add a test for wfmath
	  Intersect functions.

2005-05-18  Al Riddoch  <alriddoch@zepler.org>

	* tests/testShaderFactory.cpp: Forgot to add test.

2005-05-17  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/TileShader.cpp: Delete subShaders from destructor.

	* Mercator/DepthShader.cpp, Mercator/DepthShader.h,
	  Mercator/FillShader.cpp, Mercator/FillShader.h,
	  Mercator/GrassShader.cpp, Mercator/GrassShader.h,
	  Mercator/ThresholdShader.cpp, Mercator/ThresholdShader.h,
	  Mercator/Shader.h: Add a second constructor to all shaders
	  which takes a generic parameter map type, to allow creation
	  of shaders to be automated.

	* Mercator/ShaderFactory.h, Mercator/ShaderFactory.cpp,
	  Mercator/ShaderFactory_impl.h: New factory classes to handle
	  creating shaders from a string giving the shader type.

	* tests/testShaderFactory.cpp: Test for new shader factory classes.

2005-05-09  James Turner  <james@worldforge.org>

	* Mercator/AreaShader.cpp: zero out the Buffer before shading it,
	  to avoid problems if the memory allocator doesn't zero it for us.

2005-05-08  Al Riddoch  <alriddoch@zepler.org>

	* NEWS: Set date on 0.2.2 release entry.

	* configure.ac: Increment interface version for release.

	* Release 0.2.2, interface version 3.

2005-05-08  James Turner  <james@worldforge.org>

	* Mercator/Terrain.cpp: when adding an area, if the segment already has
	  a shader for the area's layer, mark the surface as invalid.
	
	* Mercator/Segment.h, Mercator/Segment.cpp: rename 'getBox' to 'getRect',
	  and make a real 'getBox' that returns an AxisBox<3>, where the z values
	  are defined by the min and max height of the segment.
	
	* Mercator/AreaShader.cpp: update for the changed Segment API

2005-05-08  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Area.cpp, Mercator/Area.h, Mercator/Buffer.h,
	  Mercator/Buffer_impl.h, Mercator/GrassShader.cpp,
	  Mercator/Shader.cpp, Mercator/Shader.h, Mercator/Surface.cpp,
	  Mercator/Surface.h: Surfaces now have a const reference to Segment
	  so they can't modify the Segment data.

2005-05-05  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Segment.h: Add accessor for segment position on the
	  basepoint grid.

2005-04-30  Al Riddoch  <alriddoch@zepler.org>

	* acinclude.m4: Remove unused CPPUnit macro, and add required
	  pkg-config macro.

2005-04-30  Al Riddoch  <alriddoch@zepler.org>

	* NEWS: Add a pending news item for the upcoming release.

	* configure.ac: Update autoconf usage. Remove MERCATOR_VERSION.

	* tests/Makefile.am: Add test*.pgm to the DISTCLEANFILES so that
	  distcheck runs cleanly.

2005-04-23  Al Riddoch  <alriddoch@zepler.org>

	* mercator.spec.in: Remove some unnecessary Requires lines from the
	  rpm spec.

2005-04-21  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/TileShader.cpp: Fix shader so it allocates surface store
	  before shading, and does not attempt to shade subsurfaces that will
	  contain no data.

2005-04-21  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/TileShader.h, Mercator/TileShader.cpp: Implement shading
	  the tile buffer, and method required to add sub shaders.

	* tests/testTileShader.cpp: Unit test for TileShader.

2005-04-21  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Terrain.h: Fix documentation comment now that member
	  has been changed.

	* Mercator/TileShader.h, Mercator/TileShader.cpp:
	  Starting point for new class to handle determining what the
	  surface is made of.

2005-04-12 James Turner <james@worldforge.org>

	* Mercator/Terrain.cpp: when adding an area to a segment, check if
	  any shaders now intersect the segment, and if so, add a surface for
	  them.
	  
	* Mercator/Terrain.cpp: re-order Segment building code in setBasePoint,
	  so areas are added before surfaces.
	  
	* Mercator/Segment.cpp, Mercator/Segment.h: factor segment invalidation
	  into a helper method, and invalidate segments when an Area is added
	  to a Segment.

	* Mercator/Area.cpp: remove debug code.

2005-04-12  Al Riddoch  <alriddoch@zepler.org>

	* tests/testShader.cpp: Check if a shader being tested intersects with
	  a given Segment before attempting to populate it.

2005-04-12  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Terrain.cpp, Mercator/Segment.cpp: Fix use of iterators
	  in for loops to be more efficient.

2005-04-12 James Turner <james@worldforge.org>

	* Mercator/Terrain.cpp: formatting / style changes to appease the
	  great dark lord of Soton.

2005-04-12 James Turner <james@worldforge.org>

	* Mercator/Shader.h: change checkIntersects to work on Segments
	  (as the comments suggest it originally did).
	  
	* Mercator/Terrain.cpp, Mercator/Terrain.h: when adding a shader,
	  clients must now specify a unique integer ID, which is used
	  to identify the shader in a Segment's surfacestore. As a result,
	  the Shaderstore is now a std::map<>. When adding shaders to
	  a Segment, checkIntersects is now used to only add shaders which
	  affect the segment.
	  
	* Mercator/Segment.cpp, Mercator/Segment.h: change Surfacestore to
	  be sparse, implement as a map, where the index value is the ID of
	  the shader which generated the surface.
	  
	* Mercator/AreaShader.cpp, Mercator/AreaShader.h, 
	  Mercator/DepthShader.h, Mercator/DepthShader.cpp,
	  Mercator/FillShader.cpp, Mercator/FillShader.h,
	  Mercator/GrassShader.cpp, Mercator/GrassShader.h,
	  Mercator/ThresholdShader.cpp, Mercator/ThresholdShader.h:
	  update the revised shader API. In all cases the only change is
	  removed a level of indirection, since every implementation of
	  checkIntersect simply called 's.m_segment' to do useful work.
	  
	* tests/testArea.cpp, tests/testTerrain.cpp: update tests for new
	  shader API.

2005-04-11 James Turner <james@worldforge.org>

	* tests/timeSeg.cpp: fix up for changes to Forest API.

2005-04-10  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Area.h: Fix bbox() accessor to return by reference, and
	  add an accessor for the area polygon.

	* configure.ac: Bump version to 0.2.2, so apps can test for new
	  Forest and Area API.

2005-04-10 James Turner <james@worldforge.org>

	* Mercator/Forrest.cpp, Mercator/Forrest.h: make Forrest objects own
	  an area, replacing their own Box + Polygon storage, which was
	  only partially supported.
	  
	* tests/testForrest.cpp: update for changed Forrest API
	
	* Mercator/Terrain.cpp, Mercator/Terrain.h: make Terrain track a list
	  of areas, and install them on newly created segments if required.
	  Necessary to allow Areas to be defined prior to segments they
	  may intersect.

2005-04-05 James Turner <james@worldforge.org>

	* Mercator/AreaShader.cpp, Mercator/Area.cpp: remove #pragmas I
	  left in, which GCC moans about.

2005-03-28  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/AreaShader.cpp: Fix iterator usage in shade().

	* tests/Makefile.am: Enable testArea again.

2005-03-26  Al Riddoch  <alriddoch@zepler.org>

	* tests/Makefile.am: Remove testArea from tests so its not run as
	  its broken.

2005-03-26  Al Riddoch  <alriddoch@zepler.org>

	* tests/Makefile.am: Add testArea to the check programs so it builds.

2005-03-25  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/AreaShader.cpp: Include config.h so that iround.h works
	  right.

2005-03-25  James Turner  <james@worldforge.org>

	* Mercator/Area.cpp, Mercator/Area.h, Mercator/AreaShader.cpp, 
	  Mercator/AreaShader.h: adding missing copyright statements on the
	  new files.

2005-03-25  James Turner  <james@worldforge.org>

	* Mercator/Area.cpp, Mercator/Area.h: initial work on supporting
	  polygonal areas in Mercator.
	  
	* Mercator/AreaShader.cpp, Mercator/AreaShader.h: shader which scan-
	  converts areas into a Surface, with basic anti-aliasing.
	  
	* test/testArea.cpp: basic tests of the Area API

2005-03-03  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/TerrainMod.cpp, Mercator/TerrainMod.h: Add a virtual
	  destructor to TerrainMod.

2005-02-21  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Segment.cpp, Mercator/Segment.h: Remove obsolete unused
	  vertex cache code.

2004-12-31  Al Riddoch  <alriddoch@zepler.org>

	* mercator.spec.in: Update spec with License URL Package Vendor
	  and Distribution tags.

2004-08-05  Al Riddoch  <alriddoch@zepler.org>

	* tests/testIntersect.cpp: Fix equality test in the tests and
	  add a commenting explaining why.

	* Commit configure.ac changes for the 0.2.1 release.
	  Actual 0.2.1 release date was 2004-07-21.

2004-08-05  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Forest.cpp, Mercator/Forest.h, Mercator/Matrix.h,
	  Mercator/Plant.h, Mercator/Segment.cpp, Mercator/Segment.h,
	  Mercator/Shader.cpp, Mercator/Shader.h, Mercator/Terrain.cpp,
	  Mercator/Terrain.h: Some minor API tweaks and cleanups.

	* tests/main.cpp, tests/testShader.cpp: Update tests to take
	  account of API changes.

2004-06-07  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/TerrainMod_impl.h: Fixes to work with gcc 3.4 stricter
	  template compiler thanks to Erik Hjortsberg.

2004-06-06  Al Riddoch  <alriddoch@zepler.org>

	* Fix devel dependencies in rpm spec.

2004-06-05  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Segment.h: Add method to set min and max at creation time.

	* Mercator/Terrain.cpp: When creating a new segment, set its
	  min and max to the min and max height of the BasePoints.

2004-06-03  James Turner  <james@worldforge.org>

	* XCode project updates

2004-06-03  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/iround.h, Mercator/DepthShader.cpp, Mercator/Forest.cpp,
	  Mercator/Segment.cpp, Mercator/Terrain.cpp: Clean up use of the
	  I_ROUND macro by moving its definition into a build only header.

	* Mercator/Segment.cpp: Ensure floats are used not doubles in
	  calculations, and use the float version of libm calls where
	  apropriate.

2004-05-18  Al Riddoch  <alriddoch@zepler.org>

	* Release 0.2.0, interface version 1.0.0

2004-05-18  Al Riddoch  <alriddoch@zepler.org>

	* Final tweak to rpm spec.

2004-05-18  Al Riddoch  <alriddoch@zepler.org>

	* Tweak configure.ac.

2004-05-18  Al Riddoch  <alriddoch@zepler.org>

	* tests/testIntersect.cpp: Provide more details when getHeightAndNormal
	  test fails.

2004-05-18  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/BasePoint.cpp: Tweak roughnes and falloff to give nicer
	  looking terrain.

	* Mercator/Segment.cpp: Clarify the qRMD implementation function.

2004-05-18  Al Riddoch  <alriddoch@zepler.org>

	* Get canonical system for cross compiling.

2004-05-17  Al Riddoch  <alriddoch@zepler.org>

	* Migrate to configure.ac and fix rpm spec.

2004-05-15  Al Riddoch  <alriddoch@zepler.org>

	* Switch to configure.ac, bump up version numbers, fix spec
	  and prepare for release.

2004-04-08  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Segment.cpp: Fix the normal calculation. Really right
	  now.

2004-04-07  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Terrain.h, Mercator/Terrain.cpp: Fixes to be compatible
	  with other compilers.

	* Mercator/Segment.cpp: Fix seem normals, and avoid using variable
	  size local arrays, and handle systems with no rint.

	* Mercator/Forest.cpp, Mercator/DepthShader.cpp: Handle systems with
	  no rint.

2004-03-19  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/GrassShader.cpp: Fix uninitialised 0,0 corner tile
	  in grass shader.

2004-02-22  Damien McGinnes <mcginnes at netspeed dot com.au>

	* README: minor mods, added Vegetation section

2004-02-07  Damien McGinnes <mcginnes at netspeed dot com.au>

	* Mercator/Forest.cpp: fixed 'bbox to polygon' calc;
	  also test inside polygon during populate.

2004-02-06  Al Riddoch  <alriddoch@zepler.org>

	* tests/testForest.cpp: Update tests to use new accessors
	  for forest area.

2004-02-06  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Forest.h, Mercator/Forest.cpp: Modify accessors
	  so area of a forest is stored as Polygon instead of a
	  box.

2004-02-03  Damien McGinnes <mcginnes at netspeed dot com.au>

	* Mercator/RandCache.h: make RandCache store uint32 rather than
	  double. Should halve memory usage.

2004-01-24  Damien McGinnes <mcginnes at netspeed dot com.au>

	* Mercator/Forest.h, Mercator/Forest.cpp: make forest use
	  RandCache.

2004-01-24  Damien McGinnes <mcginnes at netspeed dot com.au>

	* Mercator/RandCache.h: add code to provide a pool of repeatable
	  (2d indexed) random numbers for use by Forest etc.
	  thanks to rsteinke.

2004-01-20  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Forest.cpp: Use WFMath's value of PI, as windows
	  does not include it in math.h.

2004-01-17  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Forest.cpp: Revert changes to rng seeding as the
	  behavoir broke some of the key repeatability features required.
	  Add comments explaining what the valued properties of the
	  algorithm are.

2004-01-17  Damien McGinnes <mcginnes at netspeed dot com.au>

	* Mercator/Forest.cpp, Mercator/Forest.h : modified seeding
	  arrangement so that number of rng seeds is proportional to
	  number of trees, not number of gridpoints. This significantly 
	  speeds up forest generation and has the byproduct of improving
	  the randomness of forests. I defaulted the seed to 0 in the
	  constructor so hopefully existing code will still compile
	* tests/testForest.cpp put a seed in the forest constructor
	* tests/timeSeg.cpp added a test to time forest population

2004-01-17  Damien McGinnes <mcginnes at netspeed dot com.au>

	* Mercator/Forest.cpp : modified seeding in forest to use an array

2004-01-15  James Turner <james@worldforge.org>
    
	* Update XCode project : proper WFMath dependancy, and many more
	  tests, plus an aggregate target which builds all the tests.

2004-01-15  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/DepthShader.cpp, Mercator/Forest.cpp,
	  Mercator/Terrain.cpp: Make sure config.h and cmath are
	  being included as required.

2004-01-15  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Forest.cpp: Reduce probability of tree at given node
	  by factor of 10.

2004-01-13  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Forest.cpp, Mercator/Forest.h, Mercator/Plant.h:
	  Add accessors for plant and forest properties. Implement
	  populating the forest with plants.

	* tests/testPlant.cpp: Add tests for new accessors.

	* tests/testForest.cpp: Add test for populating code.

2004-01-13  Al Riddoch  <alriddoch@zepler.org>

	* tests/testQRNG.cpp: Unit test to verify predictability of quasi
	  random number generator.

2004-01-13  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Forest.cpp, Mercator/Forest.h,
	  Mercator/Plant.cpp, Mercator/Plant.h, tests/testPlant.cpp:
	  New classes for handling vegetation, including basics of
	  functionality, and unit tests.

2004-01-13  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/BasePoint.h, Mercator/BasePoint.cpp:
	  Move static float variable definition into cpp file
	  for strict C++ compliance.

2003-12-19  Al Riddoch  <alriddoch@zepler.org>

	* Remove Serial from rpm spec as it is not required, and messes up
	  deps.

2003-11-27  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Terrain.cpp: Use lrintf or equivalent for clean
	  fast float-int conversion.

2003-11-03 James Turner <james@worldforge.org>

	* Add ProjectBuilder project, Mercator builds with no
	  problems, but hasn't been tested.

2003-11-01  Al Riddoch  <alriddoch@zepler.org>

	* Fix BuildRequires in rpm spec.

2003-10-31 Damien McGinnes 

	* fixed tests/util_timer compile and link

2003-10-31 Damien McGinnes 

	* Added timeSeg test

2003-10-31  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/DepthShader.cpp: Use apropriate rint() function to convert
	  float to int.

	* Mercator/Intersect.cpp, Mercator/Intersect.h, tests/main.cpp:
	  Add copyright notice.

	* Mercator/TerrainMod.h, Mercator/TerrainMod_impl.h: Fix copyright
	  notice.

2003-10-31 Damien McGinnes 

	* Mercator/DepthShader.cpp: fixed type warning

	* README: Added some text

2003-10-24  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Segment.cpp: Fix incorrect assert.

2003-09-22 Damien McGinnes 

	* Mercator/Segment.cpp: minor changes to interpolation to improve 
	  performance in the general case. (gives about a 5% speedup)

	* Mercator/Intersect.cpp: made some file scope functions static on
	  advice from rsteinke. init'ed som vars to keep gcc happy. made ray
	  intersect return true if ray begins below terrain.

2003-09-14 Damien McGinnes 

	* testPhys.cpp: added a rudimentary physics model to do a more useful
	  test of the ray-terrain intersection
	* Mercator/Intersect.cpp,h: some cleanups for bugs found during the
	  above test

2003-09-13 Damien McGinnes 

	* TODO: cleaned up a few old TODOs
        
2003-09-13 Damien McGinnes 

	* Mercator/Intersect.cpp,h: some intersection code cleanup
	  ray intersection now returns the point of intersection
	  and normal.
	* Mercator/Segment.cpp: fixed normal for intersection on diagonal
	  of a cell (between the two triangles of the quad) also normalised
	  the returned normal

2003-09-12 Damien McGinnes 

	* Mercator/Intersect.cpp,h: maybe finished ray intersection
	  needs more testing
	* tests/testIntersect.cpp: added more tests

2003-09-11 Damien McGinnes 

	* Mercator/Intersect.cpp,h: added ray intersection with terrain
	  not complete yet, ray/triangle tests not added
	* tests/testIntersect.cpp: added ray intersection test -  not finished

2003-09-10 Damien McGinnes 

	* Mercator/Intersect.cpp,h: added point intersection with terrain
	  and height over terrain functions

2003-09-10 Damien McGinnes 

	* Mercator/Intersect.cpp,h: added files for axisbox intersection
	  with terrain
	* tests/testIntersect.cpp: added files for intersection unit tests

2003-09-06 Damien McGinnes 

	* Mercator/Surface.cpp: fixed a segfault in invalidate; slight
	  cleanup to the rounding code in clipToSegment.

2003-09-03  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Surface.h: Use <climits> to get the max value of
	  a char.

	* Mercator/Surface.cpp, Mercator/Buffer.h, Mercator/Buffer_impl.h:
	  Modify buffers and thus surfaces to handle their memory
	  dynamically, providing facilities for allocating and
	  deleting the buffer.

	* Mercator/Segment.h, Mercator/Segment.cpp: Implement easier
	  memory management, getting rid of the flags for points and
	  normals, using the value of the pointer instead.
	  Add a few to be called to cause the segment to free its
	  data, with the option to keep hold of the height field.

2003-09-01  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Terrain.h, Mercator/Terrain.cpp: Add new
	  getHeightAndNormal() method which makes available the method
	  of the same name from Segment on the whole terrain.

2003-08-31  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Shader.h: Add default arguments for constructor,
	  which default to alpha channel only.

	* Mercator/ThresholdShader.cpp, Mercator/GrassShader.cpp,
	  Mercator/FillShader.cpp, Mercator/DepthShader.cpp:
	  Stop specifying arguements to the shader constructor, and thus
	  accept the defaults. Net effect is that surface buffers now
	  just contain alpha values by default.

2003-08-22 Damien McGinnes

	* Mercator/Segment.cpp: fixed edge and corner normals.

2003-08-17  Al Riddoch  <alriddoch@zepler.org>

	* Buffer_impl.h: Add to distribution.

	* Mercator/Segment.cpp: Make sure math functions are specified
	  as being from the global namespace, and add support for rintf
	  as its better than rint, and available under FreeBSD.

2003-08-17  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Buffer.h: Make segment this buffer is bound to public.

	* Mercator/Segment.cpp: Set m_min and m_max to values other
	  that 0, so that they end up with the right value.

	* Mercator/DepthShader.h, Mercator/DepthShader.cpp,
	  Mercator/FillShader.h, Mercator/FillShader.cpp,
	  Mercator/GrassShader.h, Mercator/GrassShader.cpp,
	  Mercator/ThresholdShader.h, Mercator/ThresholdShader.cpp,
	  Mercator/Shader.h: Add virtual method to shaders to
	  allow a check whether the min and max values of a segment
	  intersect with the range affected by this shader.

	* Mercator/Surface.h, Mercator/Surface.cpp: Make shader
	  reference public, and add a check so that we only
	  shade surfaces where the shader usefully applies to the segment.

2003-08-15  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Segment.cpp: Add test for lrintf() which is more
	  suitable and faster than rint() on platforms which have it.

2003-08-14  Damien McGinnes

	* Mercator/Segment.cpp: use MersenneTwister from wfmath

2003-08-12  Al Riddoch  <alriddoch@zepler.org>

	* Update to use wfmath 0.3 for compatability with eris 1.2.
	  We are now clear to use Mersenne Twister from wfmath.

2003-08-11  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Buffer.cpp, Mercator/Buffer.h, Mercator/Buffer_impl.h:
	  Convert to template so that buffer data can be an array of any
	  type.

	* Mercator/Surface.cpp, Mercator/Surface.h: Specialise Buffer as
	  unsigned bytes. Much more compact than floats.

	* Mercator/ThresholdShader.cpp, Mercator/GrassShader.h,
	  Mercator/GrassShader.cpp, Mercator/FillShader.cpp,
	  Mercator/DepthShader.cpp: Re-write shaders to be largely
	  buffer type independant.

2003-08-09  Damien McGinnes

	* Mercator/Segment.cpp, Mercator/MersenneTwister.h, configure,in: 
	  put MersenneTwister in Mercator until clients are ready to move
	  across to wfmath-0.3

2003-08-09  Damien McGinnes

	* Mercator/Segment.cpp: use a local random number generator to
	  ensure the rng state cant be affected by other use of rand() in
	  an app. Change the RNG code to utilise the MersenneTwister.
	* configure.in: require wfmath 0.3 for the MersenneTwister RNG.
	* Mercator/BasePoint.h: seed() now returns an unsigned int.
	* this RNG gives a 20% spped increase on optimized (-O2) code 
	  compared with rand(). (unoptimized it's roughly the same)

          generate 400 tiles (height only, res 64)
          std rand = 1.75 seconds = 4.4 ms per tile
          mt rand = 1.41 seconds = 3.5 ms per tile

2003-08-08  Damien McGinnes

	* Mercator/Segment.cpp: changed round() to rint()
	* updated TODO

2003-08-06  Al Riddoch  <alriddoch@zepler.org>

	* Removed depency on Atlas-C++ for now.

2003-08-06  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Segment.h, Mercator/Segment.cpp: Add vertex cache
	  pointer to segment. Vertex buffer is handled by client.

2003-07-31  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/TerrainMod.h, Mercator/TerrainMod_impl.h,
	  Mercator/TerrainMod.cpp: Move definition of virtual
	  methods out of the headers, as they can't be inlined.

	* tests/testTerrainMod.cpp: Add unit test for terrain mods.

2003-07-28  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Buffer.cpp, Mercator/Buffer.h: Add accessor operators so
	  data can be accessed by coordinate and channel. Store size locally.

	* Mercator/Matrix.h: Use unsigned int for indexs. Safer.

	* Mercator/GrassShader.cpp Mercator/GrassShader.h: Add new shader
	  for bands which also have a slope dependence.

	* tests/testShader.cpp: Include GrassShader in tests.

2003-07-28  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/DepthShader.cpp, Mercator/DepthShader.h: Fix some
	  bugs.

	* Mercator/ThresholdShader.cpp, Mercator/ThresholdShader.h:
	  Fix order of constructor argments.

2003-07-27  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/DepthShader.cpp, Mercator/DepthShader.h:
	  Add a shader for tinting terrain below water level to simulate
	  light attenuation due to water.

2003-07-27  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Shader.cpp, Mercator/Shader.h: Add flags to shader
	  to specify whether this shader requires colour and alpha
	  elements in the surface buffer. Add a method which
	  creates a surface with the required kind of buffer.

	* Mercator/Surface.cpp, Mercator/Surface.h: Make a couple of
	  references const. Add flags which provide hints about
	  the number of channels required in the surface.

	* Mercator/Terrain.cpp: Use new method in shader to create
	  surface objects.

	* Mercator/FillShader.cpp, Mercator/FillShader.h,
	  Mercator/ThresholdShader.cpp, Mercator/ThresholdShader.h:
	  Update shaders to new base class.

	* tests/testShader.cpp: Update tests, check for a bit more
	  info, and ensure that exit status reflects if an error
	  occured.

2003-07-26 Damien McGinnes

	* Mercator/Segment.cpp: check segment validity before applying mod to
	  prevent a segfault.

2003-07-26  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/FillShader.cpp: Fix unsigned int warning.

	* Mercator/ThresholdShader.cpp Mercator/ThresholdShader.h:
	  Implement threshold shaders for simple landscape concepts.

	* tests/testShader.cpp: Update shader unit test to test all current
	  shaders.

2003-07-25  Al Riddoch  <alriddoch@zepler.org>

	* We're not using CppUnit, so get rid of the check.

2003-07-25  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Terrain.cpp, Mercator/Terrain.h: Add new argment to to
	  constructor for options, which amongst others will define whether the
	  terrain has surfaces. Implement code for adding surfaces
	  to a segment, and shading those surfaces.

	* Mercator/Segment.h, Mercator/Segment.cpp: Add a typedef and
	  accessors for the surface list. Add a method to call populate
	  on all the segments surfaces.

	* tests/testTerrain.cpp: Add tests to overall unit test to
	  check the shader functionality of Terrain.

2003-07-24  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/FillShader.h: Make FillShader inherit from Shader,
	  as it should have done all along.

	* Mercator/Segment.h: Add list of surfaces of this segment.
	  Fill out some comments.

	* Mercator/Surface.cpp, Mercator/Surface.h: Store a reference to
	  its shader in a surface. Add populate member which causes the
	  shader to shade this surface. This allows the code to populate
	  a set of surfaces without knowing what the shaders are supposed
	  to be.

	* Mercator/Terrain.cpp, Mercator/Terrain.h: Add methods to add
	  and shade the surfaces of a segment.

	* tests/testShader.cpp: Modify unit test to account for modified
	  API.

2003-07-24  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Buffer.h, Mercator/Buffer.cpp: Add member to store
	  number of channels, and add accessors for channels, and Segment
	  reference.

	* Mercator/Shader.cpp, Mercator/Shader.h: Remove constructor
	  arguments, and segment reference member. A shader is not
	  bound to a segment, not restricted to a fixed number of channels.
	  Add shade() vertual method which applies the given shader to
	  a surface.

	* Mercator/FillShader.cpp, Mercator/FillShader.h: Add demo shader that
	  just fills the surface with 1s.

	* tests/testShader.cpp: Add a shader unit test which uses FillShader
	  for now.

2003-07-24  Al Riddoch  <alriddoch@zepler.org>

	* tests/testTerrain.cpp: Add unit test for terrain class.

2003-07-24  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Terrain.h: Add storage and accessors for shaders.

2003-07-21  Al Riddoch  <alriddoch@zepler.org>

	* Tweak configure.in to be a little more compatable with older
	  autoconf.

2003-07-21  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Segment.h: Add accessor for the size member.

	* Mercator/Buffer.h, Mercator/Buffer.cpp, Mercator/Surface.h,
	  Mercator/Surface.cpp: Make a base class for handling
	  float buffers for vertex, texture coord and colour data.
	  Use it as the basis for Surface.

	* Mercator/Shader.h, Mercator/Shader.cpp: Place holder for shaders
	  which implement rules creating a surface from the segment height
	  data according to a rule.

2003-07-21  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Segment.cpp: Free the float buffers using the correct
	  array delete operator.

2003-07-21  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Segment.h, Mercator/Segment.cpp: Allocate point data on the
	  fly.  Use m_res and m_size in the terrain population functions rather
	  than recalculating, or passing values.

2003-07-20  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Surface.h, Mercator/Surface.cpp: Make surface class a little
	  more flexible by paramaterising the number of channels.

	* Mercator/Segment.h, Mercator/Segment.cpp: Add convenience membe
	  m_size which is m_res + 1, so we don't have to keep doing that
	  calculation.

2003-07-06  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Segment.h: Re-name getSize() to getResolution()

	* Mercator/Surface.h, Mercator/Surface.cpp: Store a reference to the
	  the segment this is a layer of, and add an enumeration for indicating
	  the orientation of the texturing on this layer.

2003-07-06  Al Riddoch  <alriddoch@zepler.org>

	* Clean up configure.in a bit.

2003-07-05 Damien McGinnes
        
	* Mercator/TerrainMod.h: added a CraterTerrainMod that subtracts a 
	  sphere from the terrain.

2003-07-03  Al Riddoch  <alriddoch@zepler.org>

	* Update rpm spec to be cleaner, and make the technical sections
	  more generic.

2003-07-03  Al Riddoch  <alriddoch@zepler.org>

	* Remove legacy mercator-config script and m4 macro, as we
	  don't want people using them.

2003-06-27 Damien McGinnes
        
	* Mercator/Terrain.cpp, Terrain.h: made addMod take a const ref 
	  to a terrain mod (bit cleaner)
	* Mercator/TerrainMod.h: made clone methods const

2003-06-26 Damien McGinnes
        
	* Mercator/Segment.cpp, Segment.h: Added the location of the
	  segment. Changed applyMod to work with mods in absolute coords
	* Mercator/Terrain.cpp, Terrain.h: added addMod to apply mods to 
	  the terrain - this allows a mod to span several segments
	* Mercator/TerrainMod.h: added a clone method, fixed the virtual
	  keyword on a few methods, disabled copy constructors

2003-06-23  Al Riddoch  <alriddoch@zepler.org>

	* Fix Makefile.ams so that distcheck works.

	* tests/main.cpp: Fix tests to work with recent API changes.

2003-06-22  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Mercator.h, Mercator/Segment.cpp, Mercator/Segment.h,
	  Mercator/Terrain.cpp, Mercator/Terrain.h: Clean up the
	  way the default segment resolution and size is handled.

	* Mercator/Surface.cpp, Mercator/Surface.h: Framework for
	  class representation texture layers on the terrain.

2003-06-22  Al Riddoch  <alriddoch@zepler.org>

	* Updated copyright statements to include Damien a bit more.

2003-06-22  Damien McGinnes

	* Mercator/Segment.cpp: fixed an error in the clip code (x and y 
	  were switched)
        
2003-06-22  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Segment.h: Make invalidate() private.

	* Mercator/Terrain.cpp, Mercator/Terrain.h: Fix bugs in revised
	  setBasePoint. Remove obsolete methods, and simply to one
	  getSegment call, as two are no longer required. Add destructor.

2003-06-21  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Segment.cpp, Mercator/Segment.h: Store control
	  points in the segment object, so it can be re-populated.

	* Mercator/Terrain.cpp, Mercator/Terrain.h: Manage the creation of
	  new Segment objects when inserting new base points, and handle
	  invalidation at this point too. getSegmentSafe is now deprecated.
	  Untested.

	* tests/main.cpp: Update tests for API change, and clean up output.

2003-06-21  Damien McGinnes

	* Mercator/Terrain.cpp: 
	  - fixed a bug in invalidatePoint (i, j), not (x,y)
	  - removed the erase line in invalidateSegment (mem leak, and loses
	    mods to the segment)
	  - fixed one of the loop limits in refresh

2003-06-20  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Matrix.cpp: Add template instantiations, which I assume
	  was the effect intended by the previous code.

	* Mercator/Terrain.h, Mercator/Terrain.cpp:
	  Re-work segment invalidation code. operator[] should never
	  be used to test for a key in an STL map.

	* Mercator/Segment.cpp, Mercator/Segment.h, Mercator/TerrainMod.h:
	  Fix comment and code formatting.

2003-06-20  Damien McGinnes

	* Mercator/Terrain.cpp: changed invalidate and getSegmentSafe to use
	  the validity flags
	* tests/main.cpp: did a 30 second test of the above code
        
2003-06-20  Damien McGinnes

	* Mercator/Segment.cpp: added validity flags for points and normals,
	  and fixed up a few code alignment probs
	* Mercator/Terrain.h: started to change invalidate. (commented out
	  right now)
	  Need to modify getSegmentSafe to use the validity flags and only
	  create a new segment when one is not already there.

2003-06-19  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Terrain.h: Add support for legacy interface.

2003-06-19  Al Riddoch  <alriddoch@zepler.org>

	* tests/main.cpp: Move the test prog out of the main code.

	* Mercator/BasePoint.h: Re-work BasePoint class to be more inline
	  with the main style.

	* Mercator/Segment.cpp: Fix up the code to use the new BasePoint
	  style.

2003-06-15 Damien McGinnes

	* new BasePoint.h replaces floats for basepoints
	* Mercator/Segment.cpp : variable roughness implemented
	* added a basic test file - doesnt do much

2003-06-09 Damien McGinnes

	* Mercator/Segment.cpp : modified the normals, this time hopefully so
	  they will work

2003-06-09 Damien McGinnes

	* Mercator/Segment.cpp : modified the normal array to be same size as
	  the heights array. bottom and right boundaries are a bit of a hack

2003-06-09 Damien McGinnes

	* Mercator/Segment.cpp : added in an attempt at values for the normal
	  array. Array is one row and column smaller than the height array.
 
2003-06-08  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Segment.h, Mercator/Segment.cpp: Tidy up some code,
	  and add the beginnings of the normal calculation code.

2003-06-08  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Terrain.h, Mercator/Terrain.cpp: Get rid of the passing
	  over extra surrounding basepoints into Segment::populate.

	* Mercator/Segment.h, Mercator/Segment.cpp: No longer require
	  surrounding basepoints when doing qRMD. Add API and stubs for
	  storing an entire array of normals. Segment::populateNormals()
	  currently just allocates the array of normals. It does nothing
	  else.

2003-06-06 Damien McGinnes

	* TerrainMod.h: fixed where I called Center() instead of getCenter()

2003-06-06 Damien McGinnes

	* TerrainMod.h : added. Defines modifiers for the terrain.
	* Segment.h/Segment.cpp : modified to use TerrainMod objects, stored
	  in a list, applied in order during populate
	* removed Segment_impl.h refactored out.

2003-06-03  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Segment_impl.h Mercator/Segment.cpp: Fix problem
	  with wfmath template instances, and clean up code.

2003-06-03 Damien McGinnes

	* Segment.cpp Segment.h Segment_impl.h: started work on modification
	  of terrain. Still got a problem that the Contains call in
	  Segment_impl.h doesnt work (link error)

2003-05-24 Damien McGinnes

	* Mercator/Segment.h Mercator/Segment.cpp: Cleaned up Segment, removed
	  tile.cpp and tile.h and moved them into Segment
	* TODO: added some ideas
	* AUTHORS: added some authors
	* added getHeightAndNormal to segment
	* addded some test code for modifying terrain to segment

2003-05-14  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Segment.h, Mercator/Segment.cpp: Add a destructor so
	  we can free the vertex storage.

2003-04-25  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Segment.cpp, Mercator/Segment.h:
	  Initialise min and max properly, and make their accessors const.

2003-04-25  Damien McGinnes

	* Mercator/tile.cpp,h: Added min and max calcs
	* Mercator/Segment.cpp,h: added accessors for min and max

2003-04-19  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Terrain.h: Add accessor for resolution variable.

2003-04-17  Al Riddoch  <alriddoch@zepler.org>

	* Mercator/Matrix.cpp, Mercator/Segment.cpp, Mercator/Segment.h,
	  Mercator/Terrain.cpp: Move source into Mercator subdir
	  for portability.

2003-03-31 Damien McGinnes

	* src/tile.cpp: modified algorithm, cleaned up code slightly
	  algorithm now generates 1 tile very quickly, but has problems
	  on steep tiles where one side is quite flat. (seams are more
	  visible).

2003-03-29  Al Riddoch  <alriddoch@zepler.org>

	* src/tile.cpp: Tweak tile() to create a size+1 * size+1 segment.

	* src/Segment.cpp: Switch to using damien's algorithm for
	  testing.

2003-03-28  Al Riddoch  <alriddoch@zepler.org>

	* src/Matrix.h, src/Matrix.cpp: Add matrix class for handling
	  basepoints.

	* src/tile.h, src/tile.cpp: damiens experimental qRMD implementation.

	* src/Terrain.h, src/Terrain.cpp, src/Segment.cpp: Use Matrix to
	  handle basepoints.

	* src/Segment.cpp: Use memcpy to make copying rows more efficient.

2003-03-19  Al Riddoch  <alriddoch@zepler.org>

	* src/Terrain.h, src/Terrain.cpp: Make value for missing points the
	  the average of surrounding points that are present. Makes edges
	  of know terrain more sane.

2003-03-19  Al Riddoch  <alriddoch@zepler.org>

	* src/Terrain.cpp: Back off change to default height points to make
	  terrain seamless again.

2003-02-23  Al Riddoch  <alriddoch@zepler.org>

	* src/Terrain.cpp: Make default height points work more sanely.

2003-02-23  Al Riddoch  <alriddoch@zepler.org>

	* src/Terrain.cpp: Make refreshing work more sanely.

2003-02-21  Al Riddoch  <alriddoch@zepler.org>

	* src/Terrain.h: Add accessor for point store.

2003-02-17  Al Riddoch  <alriddoch@zepler.org>

	* src/Segment.h, src/Segment.cpp: Add a row and column of extra
	  heightpoints to the segment to make it easier to render.

2003-01-31  Al Riddoch  <alriddoch@zepler.org>

	* Convert to using pkg-config

2003-01-28  Al Riddoch  <alriddoch@zepler.org>

	* src/Segment.cpp, src/Segment.h: Fully implement qRMD with roughness
	  and falloff.

2003-01-28  Al Riddoch  <alriddoch@zepler.org>

	* src/Segment.cpp, src/Segment.h: First stab at qRMD algorithm.

2003-01-28  Al Riddoch  <alriddoch@zepler.org>

	* src/Terrain.cpp: Fix segment dependencies.

2003-01-28  Al Riddoch  <alriddoch@zepler.org>

	* src/Segment.cpp, src/Segment.h, src/Terrain.cpp: Implement
	  midpoint based terrain algorithm, currently without any
	  displacement.

2003-01-20  Al Riddoch  <alriddoch@zepler.org>

	* src/Segment.cpp, src/Segment.h, src/Terrain.cpp, src/Terrain.h:
	  Switch to using floats instead of doubles internally for performance.

2003-01-19  Al Riddoch  <alriddoch@zepler.org>

	* src/Segment.h, src/Segment.cpp: Add class for terrain segment, which
	  currently contains an interpolated sloped area.

	* src/Terrain.h, src/Terrain.cpp: Add functionality required to manage
	  segments in the terrain.