apetcho / mathgl

http://mathgl.sourceforge.net/doc_en/Download.html

README for changes from v.1.*

There are few key changes at end-user level.

1. The structure of library is changed sufficiently. There are 4 levels now:

(a) Developer level (for people who want to improve library) contain classes for base plotting functions:

mglBase --> mglCanvas --> mglCanvasW --> mglCanvasQT, mglCanvasFL | ---------> mglCanvasGL --> mglCanvasGLUT

(b) C&Fortran interface for plotting and data handlinng functions

(c) Unified "inline" classes (mglGraph, mglData, mglWindow, ...), which contain only inline members, which call C-functions. This make MathGL completely cross-platform, i.e. the same binary files can be used in any compiler (MinGW, MSVS, Borland, ...). Moreover it give the same classes for all interfaces (Python/Octave/...).

(d) MGL scripts use mglGraph's functions but give some extra capabilities for axis setup or textual plot editing

2. There is unified class mglGraph instead of set of mglGraphZB, mglGraphPS, ... The quality<->speed level of plot is specified by SetQuality() function.

3. There is abstract class mglDataA which allow to derive classes with its own data representation. However, I recommend to use mglData for usual cases -- it have large set of built in functions.

4. All plotting functions now have unified interface for arguments: data objects or numbers; string with style; string with options. Options (the same as ones in MGL v.1.*) allows one to make fine tuning of plot. I.e. easily set the range of coordinates, plot position, font size and so on.

5. The last big change is style representation. There are differences for colors and for text style:

• Colors may have "brighted" version everywhere -- just specify '{cN}' instead of 'c'. Here 'c' is base color id, 'N' is digit 1,2...9 for brightness. Also the transparency can be changed by adding '{AN}'.

• Text styles is reverted now -- to be unified with any other styles. Color is placed firstly, then separator ':', and after it font styles (bold, italic, wire, ...).

Also there are a lot of other (not so general) changes and improvements.