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jtsiomb / xsection.c
Last active May 12, 2019
Example of rendering cross-sections of closed geometry with OpenGL
View xsection.c
/* Example of rendering cross-sections of closed non-self-intersecting geometry
* with the stencil buffer. See draw_cross_section for details.
* Controls:
* - rotate object by dragging with the left mouse button
* - move cross-section plane back and forth by dragging up/down with the right
* mouse button
* Compile with: cc -o xsection xsection.c -lGL -lGLU -lglut
jtsiomb / mbox_attachments.c
Last active Feb 10, 2019
Scans a mailbox (mbox format) and extracts all attachments with the help of munpack
View mbox_attachments.c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <alloca.h>
#include <unistd.h>
#include <fcntl.h>
#include <dirent.h>
#include <sys/wait.h>
jtsiomb /
Created Jan 15, 2019
Shell script to fix filenames to abide by my arbitrary "clean filename" rules
# ___________________________________________________
# / \_
# | fixname - cleans up filenames | \
# | | |
# | author: John Tsiombikas <> | |
# | license: public domain | |
# \___________________________________________________/ |
# \___________________________________________________/
jtsiomb / capsctrl.asm
Last active Sep 8, 2018
DOS TSR for remapping caps lock to control (see comment at the end for pre-built binaries)
View capsctrl.asm
; DOS caps lock -> ctrl remapper
; Author: John Tsiombikas <>
; This program is public domain. Do whatever you like with it
; build with: nasm -o -f bin capsctrl.asm
org 100h
bits 16
mov ax, 0900h
mov dx, msg
int 21h
jtsiomb / glclip_example.c
Created Aug 18, 2018
OpenGL user clip planes example fixed function & shaders (discard)
View glclip_example.c
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <math.h>
#include <assert.h>
#include <alloca.h>
#include <GL/glew.h>
#ifdef __APPLE__
#include <GLUT/glut.h>
jtsiomb / rinplace.c
Created Mar 24, 2018
In-place search & replace efficiently even in huge files (UNIX)
View rinplace.c
/*! cc -o rinplace -pedantic -Wall -g rinplace.c */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/mman.h>
struct snode {
jtsiomb / 1 - unistate.h
Last active Nov 19, 2017
OpenGL global uniform state tracking
View 1 - unistate.h
#ifndef UNISTATE_H_
#define UNISTATE_H_
#include "vmath/vmath.h"
class ShaderProg;
enum StType {
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