ZeScript/ZeGraph

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 ZeScript 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.

ZeScript 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.