5.2 Fl_MathGL class

Class is FLTK widget which display MathGL graphics. It is defined in #include <mgl2/fltk.h>.

Method on Fl_MathGL: void set_draw (int (*draw)(HMGL gr, void *p))

Method on Fl_MathGL: void set_draw (int (*draw)(mglGraph *gr))

Method on Fl_MathGL: void set_draw (mglDraw *draw)

Sets drawing function as global function or as one from a class mglDraw. There is support of a list of plots (frames). So as one can prepare a set of frames at first and redraw it fast later (but it requires more memory). Function should return positive number of frames for the list or zero if it will plot directly. Parameter par contains pointer to data for the plotting function draw.

Method on Fl_MathGL: void update ()

Update (redraw) plot.

Method on Fl_MathGL: void set_angle (mreal t, mreal p)

Set angles for additional plot rotation

Method on Fl_MathGL: void set_flag (int f)

Set bitwise flags for general state (1-Alpha, 2-Light)

Method on Fl_MathGL: void set_state (bool r, bool z)

Set flags for handling mouse: z=true allow zooming, r=true allow rotation/shifting/perspective and so on.

Method on Fl_MathGL: void set_zoom (mreal X1, mreal Y1, mreal X2, mreal Y2)

Set zoom in/out region

Method on Fl_MathGL: void get_zoom (mreal *X1, mreal *Y1, mreal *X2, mreal *Y2)

Get zoom in/out region

Method on Fl_MathGL: void set_popup (const Fl_Menu_Item *pmenu, Fl_Widget *w, void *v)

Set popup menu pointer

Method on Fl_MathGL: void set_graph (mglCanvas *gr)

Method on Fl_MathGL: void set_graph (mglGraph *gr)

Set new grapher instead of built-in one. Note that Fl_MathGL will automatically delete this object at destruction or at new set_graph() call.

Method on Fl_MathGL: HMGL get_graph ()

Get pointer to grapher.

Fl_MathGL option of Fl_MathGL: Fl_Valuator * tet_val

Pointer to external tet-angle validator.

Fl_MathGL option of Fl_MathGL: Fl_Valuator * phi_val

Pointer to external phi-angle validator.

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