cglib.txt

一款RPG游戏的引擎可以自己制作一款RPG游戏的引擎可以自己制作

  CgLib v1.20
*************** (c) 1998-2000 Tom Nuydens
                mail : [e-mail]
                URL  : www.gamedeveloper.org/delphi3d

CgLib, short for Computer Graphics LIBrary, is a set of data
structures and utility routines to facilitate the development
of OpenGL applications.
Features include window management, geometry routines, 3D object
and scene data structures with full file support, a custom
bitmap format for images and textures...

Version History:
-1.20: Finally got around to fixing the lighting/normals problem
       in CgObject.
-1.10: Fixed a bug that caused textures to be downsampled to
       16 bpp by the GL. Added TCGTextureObject class for fast
       texture mapping.
-1.00: Added cgChangeRes() to switch display resolution. Renamed
       cgDisplayMode to cgBufferConfig for clarity's sake. Sorry
       about this! Updated documentation.
-0.97: Added some routines to CgGeometry.pas.
-0.96: Added some useful procedures: TCGImage.LoadJPEG()and some
       more timing routines to CgUtils. Also updated the docs.
-0.95: Removed all dependencies on Math.pas.
-0.94: TCGObject now stores precalculated face normals. Another
       desparate attempt to fix the bugs in the lighting, but to
       no avail. I'm still leaving it in because it could be
       handy.
-0.93: Made everything Delphi 4 compatible.
-0.92: Added camera and viewing volume/perspective options to
       TCGScene. Updated file support to reflect the changes.
-0.91: Fixed some minor problems that popped up while I was
       working on the documentation.
-0.90: Finished TCGScene file support.
-0.88: I added the first signs of file support to TCGScene. Not
       exactly what I'd call finished, but it's a start. At
       least the file format is now definite.
-0.86: A few more minor bug fixes. TCGTextures now correctly
       sets its properties when switching from another texture.
       cgTimeElapsed returns a Single instead of a Cardinal, for
       precision. TCGScene now has a Render method (I forgot
       about that in version 0.85).
-0.85: Started the implementation of a 3D scene object, which
       currently encapsulates fog, lights, lighting model and an
       object array. No file support yet.
-0.80: Added material and texture libraries. Texture libraries
       haven't been tested yet, though. I also got started on
       some utilities (not included) to aid in the creation of
       the various file formats.
-0.76: Started file support for TCGObject. Found some more bugs
       related to the introduction of TDArray. I'll have to
       redo some code here and there. I also did some cleaning
       up here and there. The code is getting messy in some
       places. I also debugged most of the geometry routines and
       even added one or two. I got started on primitive
       creation functions, but my first attempt (cones) seems to
       need a little work.
-0.75: Version 0.70 introduced some problems in classes that
       used to be based on TBaseArray. I think I fixed most of
       them. Started display mode support for TCGForm and
       TCGDeviceContext.
-0.70: Removed all references to TBaseArray to enlarge my target
       audience. I now have a DArrays unit which also implements
       a dynamically resizable array. Also added a unit with
       debugging/performance utilities. Most importantly, I got
       started on the 3D object structures.
-0.60: Added lighting class, more geometry, and some classes for
       scene global settings. Also implemented a device context
       front-end class (untested!). Ditched the idea of plugin
       renderers. OpenGL rules.
-0.50: First public release. Windowing, images and textures, a
       bit of geometry. Mostly untested.

Disclaimer:
You are free to distribute this package, as long as all files
are included and unmodified. More importantly, I am not
responsible for what this library can and will do to your
system. Use it at your own risk.
If you use CgLib in your own applications, let me know. Please
give me credit if you distribute any programs using CgLib. You
cannot commercially distribute any CgLib applications without
my prior consent.

  Tom Nuydens ([e-mail])