1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
/***********************************************************************
* mandelbrot.cpp - Shows a ASCII based Mandelbrot set *
* *
* This file is part of the FINAL CUT widget toolkit *
* *
* Copyright 2015-2022 Markus Gans *
* *
* FINAL CUT is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Lesser General Public License as *
* published by the Free Software Foundation; either version 3 of *
* the License, or (at your option) any later version. *
* *
* FINAL CUT is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this program. If not, see *
* <http://www.gnu.org/licenses/>. *
***********************************************************************/
#include <final/final.h>
using finalcut::FColor;
using finalcut::FPoint;
using finalcut::FSize;
//----------------------------------------------------------------------
// class Mandelbrot
//----------------------------------------------------------------------
class Mandelbrot final : public finalcut::FDialog
{
public:
// Constructor
explicit Mandelbrot (finalcut::FWidget* = nullptr);
// Event handlers
void onKeyPress (finalcut::FKeyEvent*) override;
void onClose (finalcut::FCloseEvent*) override;
private:
// Methods
void initLayout() override;
void draw() override;
void adjustSize() override;
};
//----------------------------------------------------------------------
Mandelbrot::Mandelbrot (finalcut::FWidget* parent)
: finalcut::FDialog{parent}
{ }
//----------------------------------------------------------------------
void Mandelbrot::initLayout()
{
FDialog::setText ("Mandelbrot set");
FDialog::setGeometry (FPoint{6, 1}, FSize{70, 23});
FDialog::initLayout();
}
//----------------------------------------------------------------------
void Mandelbrot::draw()
{
finalcut::FDialog::draw();
const double x_min{-2.20};
const double x_max{+1.00};
const double y_min{-1.05};
const double y_max{+1.05};
const int max_iter{99};
const int xoffset{2};
const int yoffset{2};
const auto& Cols = int(getClientWidth());
const auto& Lines = int(getClientHeight());
int current_line{0};
if ( Cols < 2 || Lines < 2 )
return;
const double dX = (x_max - x_min) / (Cols - 1);
const double dY = (y_max - y_min) / Lines;
double y0 = y_min;
while ( y0 < y_max && current_line < Lines )
{
current_line++;
print() << FPoint{xoffset, yoffset + current_line};
double x0 = x_min;
while ( x0 < x_max )
{
double x{0.0};
double y{0.0};
int iter{0};
while ( x * x + y * y < 4 && iter < max_iter )
{
const double xtemp = x * x - y * y + x0;
y = 2 * x * y + y0;
x = xtemp;
iter++;
}
if ( iter < max_iter )
setColor(FColor::Black, FColor(iter % 16));
else
setColor(FColor::Black, FColor::Black);
print(' ');
x0 += dX;
}
y0 += dY;
}
}
//----------------------------------------------------------------------
void Mandelbrot::onKeyPress (finalcut::FKeyEvent* ev)
{
if ( ! ev )
return;
if ( ev->key() == finalcut::FKey('q') )
{
close();
ev->accept();
}
else
finalcut::FDialog::onKeyPress(ev);
}
//----------------------------------------------------------------------
void Mandelbrot::onClose (finalcut::FCloseEvent* ev)
{
finalcut::FApplication::closeConfirmationDialog (this, ev);
}
//----------------------------------------------------------------------
void Mandelbrot::adjustSize()
{
std::size_t h = getDesktopHeight();
std::size_t w = getDesktopWidth();
if ( h > 1 )
h--;
if ( w > 10 )
w -= 10;
setGeometry(FPoint{6, 1}, FSize{w, h}, false);
finalcut::FDialog::adjustSize();
}
//----------------------------------------------------------------------
// main part
//----------------------------------------------------------------------
auto main (int argc, char* argv[]) -> int
{
// Create the application object
finalcut::FApplication app{argc, argv};
// Create a simple dialog box
Mandelbrot mb{&app};
mb.setShadow(); // Instead of the transparent window shadow
// Set the mandelbrot object as main widget
finalcut::FWidget::setMainWidget(&mb);
// Show and start the application
mb.show();
return app.exec();
}
|
