DDJ July 1996 Graphics Programming


FEATURES

OPTIMIZING THE PERFORMANCE OF VRML WORLDS

by David R. Nadeau, Andrea L. Ames, and John L. Moreland

VRML, the "Virtual Reality Modeling Language," is a platform-neutral file format used to describe 3-D shapes and scenery for the World Wide Web. Different platforms, however, create different VRML-performance bottlenecks. Our authors present optimization techniques that let your VRML worlds look good and perform well.

3-D SURFACE CONTOURS

by Will Schroeder and Bill Lorensen

Visualization is the ability to transform complex data into visual form. What makes this possible is the contouring algorithm presented here.

SPIFF: STILL PICTURE INTERCHANGE FILE FORMAT

by James D. Murray

James examines SPIFF, the "still picture interchange file format," which is a generic bitmap file format defined by the ISO for the storage, compression, and interchange of color or grayscale continuous-tone images and bitonal image data.

AUTOMATICALLY GENERATING JAVA DOCUMENTATION

by Gary Aitken

Because Java doesn't require a header file, documentation is really important in a Java environment. Gary examines some of the documentation issues related to Java programming and discusses how to automatically generate documentation for Java classes using javadoc.

LOOP SPLITTING UNDER WINDOWS NT

by Charles Letner

Charles presents a C++ class that lets you use multiple threads to implement "loop splitting"that is, dividing processing of a loop over multiple processorsunder Windows NT.

EMBEDDED SYSTEMS

MONITORING DATA IN REAL TIME

by Tony Garcia, Jeff Woodard, and Craig Liddell

Our authors describe the design and implementation of a real-time system that monitors and logs environmental characteristics. Among other features, the system accommodates remote access to the data via the World Wide Web.

NETWORKED SYSTEMS

THE WINMOCK LIBRARY

by Joseph Hlavaty

Joe created WinMock, short for "Windows Sockets Mockup Tool," for testing and debugging Windows Sockets applications, without a network connection.

EXAMINING ROOM

EXAMINING THE SMARTSOCKETS TOOLKIT

by Douglass L. Campbell

SmartSockets, a message-oriented toolkit for developing systems that require IPC, lets you embed messaging capabilities into your applications so that they can communicate across different operating systems.

PROGRAMMER'S WORKBENCH

HELP FILE WEB LINKS

by Robert Lord

Bob shows how to embed links to World Wide Web URLs in your standard Windows help files. What makes this technique possible is a DLL implementation of a WinHelp macro that accepts a URL parameter.

COLUMNS

PROGRAMMING PARADIGMS

by Michael Swaine

As Michael finds out this month, what can go wrong, will go wong, er, wrong.

C PROGRAMMING

by Al Stevens

In building his multimedia CD-ROM project, Al implements a derived application class for the dialog-based setup program. He also takes his first sip of Java.

ALGORITHM ALLEY

by Carlo Pescio

Dr. Pescio extends Cichelli's hashing algorithm to obtain a general implementation that improves the original algorithm's performance by more than an order of magnitude.

UNDOCUMENTED CORNER

by Robert R. Collins

The Pentium Pro's undocumented Physical Address Extensions (PAE) let the processor address up to 64 GB of physical memory (36-bit address bus), and access page sizes of 2 MB.

PROGRAMMER'S BOOKSHELF

by William Stallings

Emerging Internet protocols are discussed in IPng: Internet Protocol Next Generation, edited by Scott Bradner and Allison Mankin, and IPv6: The New Internet Protocol, by Christina Huitema.

Forum

Editorial

by Jonathan Erickson

LETTERS

by you

SWAINE'S FLAMES

by Michael Swaine

PROGRAMMER'S SERVICES

OF INTEREST

by Monica E. Berg