graphics/ivtools 2.0.4a1nb4 NetBSD

ivtools is a layered collection of application frameworks for building custom drawing editors and spatial data servers. It incorporates a backward compatible copy of the original InterViews and Unidraw class libraries and sample programs (from 3.2a.tar.Z), augmented with new class libraries and sample programs for a wide variety of generic spatial data applications.

ivtools comprises four sets of interrelated capabilities useful to application programmers. The first set is the libraries and example programs borrowed whole from InterViews 3.1. The second set is for reusing and extending the light-weight glyph objects of InterViews 3.1 which embody a lot of the capability of TeX. The third set reuses and extends the Unidraw library (Unidraw is a major portion of the overall InterViews 3.1 release that provides an application framework for custom drawing editors). The fourth set adds a command interpreter and server mechanism to ivtools, and demonstrates these capabilities with text, glyph, and graphic front-ends. To get more of an overview of these layers you can read:

http://www.ivtools.org/ivtools/ivtools-layers.html.