Geometry Handling Library

Contents

• What is GHL?
• Release Notes
• More Details
• Demo Version
• Prices
• GHL Users

What is GHL?

This is a complete C functions library of 2-D and 3-D geometric calculation. The library includes functions which calculate the following items for analytical and free-formed shapes, including NURBS, with high reliability and precision.

• Shape generation
• Evaluation of generated geometric elements
• Intersection of any combination of analytical and free-formed shapes
• Offsetting and filleting (2-D and 3-D)

More than 2,000 external routines are included in this library. This library is written in standard C language, and thus portable to most of the workstations and personal computers working under various operating sysytems as follows.

• SGI IRIX
• Sun Solaris
• HP HP-UX
• Various PC Unixes
• Apple Mac OS X
• Microsoft WindowsNT/2000 & Microsoft Visual C++

This product is used by various application systems which require precise geometric operations from 1992. GHL will be revised continuously to incorporate newly developed theory and algorithms.

GHL 3.4.8.p1 : latest version (shipped on Mar. '07)

• GHL 3.4.8.p1 Release Note
• GHL 3.4.8 Release Note
• GHL 3.4.7.p1 Release Note
• GHL 3.4.7 Release Note
• GHL 3.4.6 Release Note
• GHL 3.4.5 Release Note
• GHL 3.4.4 Release Note
• GHL 3.4.3 Release Note
• GHL 3.4.2 Release Note
• GHL 3.4.1 Release Note
• GHL 3.4.0 Release Note

More Details

• Function List
  • Using HTML <TABLE>
  • Not using HTML <TABLE>
• Example Figures
  • 3D : Intersection
  • 3D : Fillets
  • 3D : Offsetting
  • 3D : Multi-Sided Patch
  • 3D : Triangulation
  • 2D : Voronoi diagram

Prices

• GHL Price List
• GHL Academic Price List

GHL Users

• CHIKAKU Project (RIKEN)
• "Morishige Lab."(University of Electro-Communications)
• Free Software: Kjo for Smalltalk(Software Research Associates, Inc.)