LinuxQuestions.org - Blog Entries

Run C/C++ Code As Script

Posted 09-04-2013 at 11:36 AM by rainbowsally
Updated 08-06-2014 at 07:13 AM by rainbowsally (new version)

Tags bash, computer mad science, simple c

runc update Sept 27, 2013

http://rainbowsally.org/rainbowsally...-rs-1.2.tar.gz

Changes slist_count() to standard objlist syntax and removes slist_getCount()
Removes destructor functions from objlist so that each class explicitly free anything memory they allocate.
Added atexit() function to tmpmem/tmpstr functions.
Most of these changes address memory leaks and/or memory that remains accessible after the apps close.

--------------...

rainbowsally

Member

Posted in Uncategorized

Views 1365 Comments 0 rainbowsally is offline

QT, fast!! pixel (color) mixing

Posted 06-21-2013 at 08:22 AM by rainbowsally
Updated 06-21-2013 at 08:32 AM by rainbowsally

Tags computer mad science, qt4 programming, simple c

Today's feature

super fast color mixing ('lerp') for QT4
PRINT_AND_DO macro to show function and execute it.
8 bit fixed point math.
A snippet of working code from the next lq-qt/mc2 lib.

Behind the scenes we are working on getting qwt lib to play nice with Designer. We're apparently over the hump with dials, which were very tricky!!

And so it's break time.

Let's talk a bit about fast color mixing, which isn't always an issue but can be when you are...

rainbowsally

Member

Posted in Uncategorized

Views 2688 Comments 0 rainbowsally is offline

More simple C and color mixing tests

Posted 06-11-2013 at 12:30 AM by rainbowsally

Tags assembler, computer mad science, simple c

Today's Feature

Here's another pixel (color) mixing toy. The best yet.

Back a couple of blog pages
http://www.linuxquestions.org/questi...lamping-35557/
we were playing with color mixing and data clamping and all kinds of junk including comparing routines to mix colors by a floating point ratio.

This is mixcolors.c - named the same as the other version we were playing with and...

rainbowsally

Member

Posted in Uncategorized

Views 872 Comments 0 rainbowsally is offline

Simple C - mix pixel data, integer math (fixed point), data clamping...

Posted 06-06-2013 at 06:15 PM by rainbowsally

Tags assembler, computer mad science, make compiling, simple c

Simple C to mix pixel data, integer math (fixed point), data clamping

Today's Features

Simple program to add two pixels clamping each byte to 0xFF, but adding all four bytes in parallel for speed. There are no branches in the algorithm.
Another simple program to mix two colors defining a gradient using a fraction from 0 to 1. We compare floating point to fixed point math versions.

Surprisingly, the long version compiles about the same code as the short one with...

rainbowsally

Member

Posted in Uncategorized

Views 1092 Comments 0 rainbowsally is offline

qt4 - sudoku solver and closable toolbar examples

Posted 05-25-2013 at 10:54 AM by rainbowsally
Updated 08-06-2014 at 07:28 AM by rainbowsally

Tags mc2, qt4, simple c

Qt4 examples.

SudokuResolver (qt4, only 180K)

screenshot http://rainbowsally.org/pub/sudoku.png

I got this at http://setup.weeb.ch, I believe. I reworked the make system using mc2 and made a few very minor changes, such as centering the window on showEvent() and addding save/restore to/from files.

There are several interesting features in the code from grid setup to BigList STL templates
and multi core processing code.
...

rainbowsally

Member

Posted in Uncategorized

Views 1092 Comments 0 rainbowsally is offline

Page 3 of 5