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//
// Mandelbrot set header file for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2023 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// https://www.fltk.org/COPYING.php
//
// Please see the following page on how to report bugs and issues:
//
// https://www.fltk.org/bugs.php
//
#include <FL/Fl.H>
#include <FL/Fl_Box.H>
#include <FL/Fl_Slider.H>
#include <FL/Fl_Double_Window.H>
#include <FL/Fl_Input.H>
#define USE_COLORS 0 // change to 1 to start in color mode
class Drawing_Area : public Fl_Box {
void draw() FL_OVERRIDE;
public:
uchar *buffer;
int use_colors;
int W,H;
int dx, dy, dw, dh; // drawing box offsets
int nextline;
int drawn;
int julia;
int iterations;
int brightness;
double jX, jY;
double X,Y,scale;
int sx, sy, sw, sh; // selection box
void erase_box();
int handle(int) FL_OVERRIDE;
void resize(int,int,int,int) FL_OVERRIDE;
void new_display();
void new_buffer();
enum {
MAX_BRIGHTNESS = 16,
DEFAULT_BRIGHTNESS = 16,
DEFAULT_BRIGHTNESS_COLOR = 8,
MAX_ITERATIONS = 14,
DEFAULT_ITERATIONS = 7
};
Drawing_Area(int x,int y,int w,int h) : Fl_Box(x,y,w,h) {
buffer = 0;
use_colors = USE_COLORS;
W = w;
H = h;
dx = dy = 0; // NOTE: as the box type is set *after* the constructor
dw = dh = 0; // the actual offsets are determined in draw()
nextline = 0;
drawn = 0;
julia = 0;
X = Y = 0;
scale = 4.0;
iterations = 1<<DEFAULT_ITERATIONS;
brightness = use_colors ? DEFAULT_BRIGHTNESS_COLOR : DEFAULT_BRIGHTNESS;
sx = sy = sw = sh = 0;
}
int idle();
};
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