zeGraph - Graphic object library

ZeGraph is a freeware designed for scientific data visualization and yet can be used to create 3D arts in a broad scope. It is small, fast, and easy to use. The core library is written in C++ for high performance. OpenGL is used as the rendering engine. Jiye Zeng developed ZeGraph as a personal library to overcome difficulties encountered in 3D data visualization in his research of environmental studies.

ZeGraph library can be linked to your C program directly. The developer has embedded ZeGraph in scripting languages of Lua, C-talk, and XML; and recently has developed Z-Script especially for ZeGraph. Now the software is being used by METEX web application server to handle SOAP and CGI requests. Here are some features of ZeGraph and Z-Script:

Make 2D or 3D scientific plots for presentation or publication;
Save offscreen image to PNG, TIFF, GIF, JPEG, JPEG2000, or BMP format;
Send offscreen image to client's browser in web application;
Render images to GIF animations;
Use OpenGL feedback to save graphics to EMF, Windows' native vector graphic format;
Use OpenGL feedback to save graphics to WRL, the format of Virtual Reality Modeling Language;
Use an offscreen image directly as texture;
Output to window for real time display or animation;
Create simple graphic user interfaces;
Manipulate data matrix;
Handle binary input and output of data, especially data in netCDF and HDF formats.

Z-Script is the easiest scripting language to extend. It has a powerful feature allowing redefinition of all operators for user objects, which makes it possible, for example, to handle matrix naturally like these: a[i,j]=b; c=a[i,j]; a[a>0]=0; and etc.

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