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libap

This is All Purpose Library - libap, which contains various, useful procedures for engineering.
It is written in C++ and the project is run with cmake. It is tested in different environments via github actions.

Parts of the library

Airfoils

  • ap_naca - generates airfoil coordinates for 4 and 5 digit NACA airfoils
  • ap_airfoil - reads and writes airfoil coordinates data files, uses also ap_naca module to generate data

Basic Math Procedures

  • ap_basicMath - contains various, basic mathematical procedures, many associated with geometry
  • ap_vector - vector of size 3 algebra, only header files based part of the library
  • ap_matrix - matrix of size 3x3 algebra, only header files based part of the library

Bezier and B-Spline Curves

  • ap_bezier - generates Bezier curves and makes operations on them
  • ap_bspline - generates B-Spline curves and makes operations on them
  • ap_bezierAirfoil - generates parametric geometry of airfoil based on Bezier curves

Convert

  • ap_convert - standardized form of often used types casting, maintains high precision when casting from real numbers to strings

Distribution

  • ap_distribution - performs nonlinear points distribution on specified distance, useful for meshing procedures

Programs and Scripts Execution

  • ap_externalExe - standardized execution of external programs and scripts from code, possible different execution forms: call, pipe, CreateProcess, for Linux, Macos, Windows systems

Filter

  • ap_filter - simple low pass filter for vector data

FLTK GUI Library Addons

  • ap_flDialogs - enhanced FLTK dialogs, with custom format that can fit main application gui format
  • ap_flFilesHandling - standardized files handling procedures like: browse, check file existence, check file permissions, etc.
  • ap_glFLTKcolor - converts FLTK color id to rgb values, used for example for OpenGL applications

OpenGL Technical Font

  • ap_glTechFont - technical font that can be used in OpenGL view, font characters based on drawing GL_LINES, thickness and color can be formatted, character can rotate with the scene, or stay perpendicular to the screen
  • ap_glTextLine - uses ap_glTechFont to create line of text in the OpenGL view

Gnuplot Pipe

  • ap_gnuplotPipe - pipe to Gnuplot plotting software

Substitute

  • ap_substitute.cpp - text file parser, basing on template file it can insert values in places specified by markers and read data from output files from places specified by markers

Xfoil Callbacks

  • ap_xfoil - most common procedures to execute in Xfoil via pipe airfoil manipulation and analysis

Repository Structure

dox - contains the libap project documentation. See README.md in the dox directory for more details
extern - contains external submodules used in the project:

  • googletest - to perform testing
  • fltk - gui library used to optionally build FLTK addons

include - directory with header files of the libap library
src - directory with source files of the libap library
tests - directory with unit tests
.git - git repository configuration files
.github - github actions configuration files
CMakeLists.txt - main cmake file
README.md - the readme file you are reading ;)
.gitignore - files and directories git does not include in the repository
.gitmodules - configuration of git submodules, see also extern directory