![qt 5.5 opengl 4.4 qt 5.5 opengl 4.4](https://d21tv0wm5mksdn.cloudfront.net/wp-content/uploads/2015/06/Qtwebenginebrowser.png)
) or to access low-level features (mglBase, mglCanvas.
![qt 5.5 opengl 4.4 qt 5.5 opengl 4.4](https://i.stack.imgur.com/mtzcL.png)
However, if you plan to use widget classes (QMathGL, Fl_MathGL. In version 2.0, main classes ( mglGraph and mglData) contains only inline functions and are acceptable for any compiler with the same binary files. I use VisualStudio, CBuilder or some other compiler (not MinGW/gcc). In last case the transparency is switched on smoothly. Last, you may change the transparency of a part of the plot by the help of functions surfa, surf3a (see Dual plotting). Second, special functions SetCutBox() and CutOff() define the condition when the points should be omitted (see Cutting). First, the point with NAN value as one of the coordinates (including color/alpha range) will never be plotted. How can I exclude a point or a region of plot from the drawing? For example, the program will await a ‘ ,’ as a decimal point but the user will enter ‘. Since it also changes the number format, it may lead to mistakes in formula writing and reading of the text in data files. I strongly recommend not to use the constant LC_ALL in the conversion.
#Qt 5.5 opengl 4.4 windows#
For example, for Russian text in CP1251 encoding you may use setlocale(LC_CTYPE, "ru_RU.cp1251") (under MS Windows the name of locale may differ – setlocale(LC_CTYPE, "russian_russia.1251")). You may change it by setlocale() function. This conversion depends on the current locale OS. But the MathGL library also has interface for 8-bit (char *) strings with internal conversion to Unicode. The standard way is to use Unicode encoding for the text output. How can I print in Russian/Spanish/Arabic/Japanese, and so on? You can make it automatic if use option -fdefault-real-8.
![qt 5.5 opengl 4.4 qt 5.5 opengl 4.4](https://doc.qt.io/archives/qt-5.5/images/graphicsview-items.png)
If library was built with enable-double=ON (this default for v.2.1 and later) then all real numbers must be real*8. For example:Ĭ function – void mgl_fplot(HMGL graph, const char *fy, const char *stl, int n) ĪT&T function – void mgl_fplot_(uintptr_t *graph, const char *fy, const char *stl, int *n, int ly, int ls) įortran users also should add C++ library by the option -lstdc++. The AT&T notation requires that the symbol ‘ _’ is added at the end of each function name, function argument(s) is passed by pointers and the string length(s) is passed at the end of the argument list. For other compilers (like Visual Fortran) you have to switch on the AT&T notation manually. You can use MathGL as is with gfortran because it uses by default the AT&T notation for external functions.
![qt 5.5 opengl 4.4 qt 5.5 opengl 4.4](https://www.qt.io/hs-fs/hubfs/Imported_Blog_Media/kms2-1024x576-2.jpg)
Note that most other languages can use (link to) the pure C functions. The reason is that I don’t know any other interpreted languages :(. These interfaces are written using SWIG (both pure C functions and classes) but only the interface for Python and Octave is included in the build system. Also there is a large set of interpreted languages, which are supported (Python, Java, ALLEGROCL, CHICKEN, Lisp, CFFI, C#, Guile, Lua, Modula 3, Mzscheme, Ocaml, Octave, Perl, PHP, Pike, R, Ruby, Tcl). But there are interfaces for: pure C, Fortran, Pascal, Forth, and its own command language MGL. The core of the MathGL library is written in C++. In which language is the library written? For which languages does it have an interface? The MathGL library is self-contained and does not require the knowledge of external libraries. Should I know some graphical libraries (like OpenGL) before using the MathGL library? If you can not find a specific type of plot, please e-mail me and this plot will appear in the next version of MathGL library. For example, the surface of curve rotation can be created by a special function torus, or as a parametrically specified surface by surf. Most “new” types of plots can be created by using the existing drawing functions. I can not find some special kind of plot. Sometimes the light reflection from flat surfaces (like, dens) can look as if the plot were absent. Be sure that Finish() is called after the plotting functions (or be sure that the plot is saved to a file). Check that the data have correct dimensions for selected type of plot. Previous: Hints, Up: Examples Ĭheck that points of the plot are located inside the bounding box and resize the bounding box using ranges function.