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Postfix, virtual_alias and vacation

Geplaatst door Roy de Boer op 3 February 2006

When using local(8) delivery in postfix, sending automatic vacation messages is easy; just run 'vacation'.

 How does it work? Incomming mail will be delivered by the local(8) mail delivery program. It reads the file .forward in the users maildirectory. If the .forward file contains a pipe (|) the mail is processed by a program, in this case /usr/bin/vacation. So when .forwards contains

\john, "| /usr/local/bin/vacation username"
Tag(s): Artikel

Doom 3 - OpenGL Shading Language

Geplaatst door Reinder Nijhoff op 25 August 2005

After spending most of my free time last year writing a raytracer, I've finally finished another OpenGL demo.

This demo loads a Doom-3 level (using the .proc format) and renders the level using portal-based visibility culling. I use the OpenGL Shading Language (GLSL) to render the levels using the light-data loaded from the .map files.

How-To: MySQL as a linked server in MS SQL Server

Geplaatst door Daniel B. Roy op 12 May 2005

This document describes how to link a Microsoft SQL Server and a MySQL server by using the 'linked server' feature in SQL Server. After linking, tables on both servers can be referenced in one SQL query or stored procedure, with the MySQL database behaving as if it was a local SQL Server database.

This technique can be useful for synchronizing MySQL-driven web pages with data held locally in a Microsoft SQL Server. The document contains an example which uses triggers to automatically propagate any changes to the content of a SQL Server table to a linked MySQL table.

kD-tree collision detection

Geplaatst door Reinder Nijhoff op 25 August 2004

I think that I've figured out how the .cm files in Doom III are used for collision detection.
In the .cm files the nodes discribing a tree are saved in the following format:
( 0 320 )
( 1 -1351.9996337891 )
...

Dynamic skydome

Geplaatst door Reinder Nijhoff op 23 June 2004

This demo shows the following techniques:

  • procedural moving clouds
  • animated skydome with sun and stars
  • stencil shadows
  • very simple terrain engine
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