Published by Amazon, January 2020, both as paperback and as e-book:

Python: an Informal Introduction
If you would like to learn the Python programming language you should try this book.
All language elements are discussed in it and clarified with programming examples,
the vast majority of which are extremely simple. Programs written in Python are very
well-readable in comparison with equivalent programs in other popular languages.

Published by Amazon, October 2019, both as paperback and as e-book:

Computer Graphics Programming in C++/Qt
The webite github.com/LAmmeraal gives you an impression what the book is about and what kind of
Qt subjects and programs are discussed in it.
The book will enable programmers to extend these programs and adapt them to their particular needs.
The downloaded executable software may also be useful for non-programmers who want to make
high-quality perspective drawings of simple objects.
The github site also contains an extensive set of data files for 3D objects, including the 26 capital
and lower case letters, the ten decimal digits and several 3D puzzles.
For example, the images below on the left and on the right are obtained by opening
the data file puzzle3ab.dat with the programs hfaces.exe and hlines.exe, respectively:

By the way, the file puzzle3ab.dat just mentioned was generated by program edit3d.exe in four steps:
(1) open the data file puzzle3a.dat for the three detached puzzle pieces;
(2) import the file puzzle3b.dat for the solved puzzle;
(3) shift the selected vertices (that is the imported object), to place the unsolved and the solved puzzles some distance apart;
(4) write the data file puzzleab.dat.


If you are interested in computer graphics and Java programming, you may take a look at
the following book, by Leen Ammeraal and Kang Zhang, published by Springer:

Some books by Leen Ammeraal published by Wiley:


All my books published by Wiley (including older ones), along with foreign translations



My Android app FuncXY to visualize functions of two variables

See also my webpage


My chess programs



Sudoku app for Android tablet or phone

If you have an Android tablet or smartphone, you may try my app Sudoku Help, available for free at Google Play Store, or have a look at this video.


Homepage Leen Ammeraal