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
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
//
// Unit tests for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2022 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 "unittests.h"
#include <config.h>
#include <FL/Fl_Box.H>
#include <FL/fl_draw.H>
#include <FL/math.h>
#if HAVE_GL
#include <FL/Fl_Gl_Window.H>
#endif
//
// --- test drawing circles and arcs ------
//
void arc(int xi, int yi, int w, int h, double a1, double a2)
{
if (a2<=a1) return;
double rx = w/2.0;
double ry = h/2.0;
double x = xi + rx + 0.5;
double y = yi + ry + 0.5;
double circ = M_PI*0.5*(rx+ry);
int i, segs = int(circ * (a2-a1) / 100);
if (segs<3) segs = 3;
a1 = a1/180*M_PI;
a2 = a2/180*M_PI;
double step = (a2-a1)/segs;
int nx = int(x + cos(a1)*rx);
int ny = int(y - sin(a1)*ry);
fl_point(nx, ny);
for (i=segs; i>0; i--) {
a1 += step;
nx = int(x + cos(a1)*rx);
ny = int(y - sin(a1)*ry);
fl_point(nx, ny);
}
}
void draw_circles() {
int a = 0, b = 0, w=40, h=40;
// ---- 1: draw a circle and a filled circle
fl_color(FL_RED);
arc(a+1, b+1, w-2, h-2, 0.0, 360.0);
fl_color(FL_GREEN);
arc(a, b, w, h, 0.0, 360.0);
arc(a+2, b+2, w-4, h-4, 0.0, 360.0);
fl_color(FL_BLACK);
fl_arc(a+1, b+1, w-1, h-1, 0.0, 360.0);
// ----
fl_color(FL_RED);
arc(a+1+50, b+1, w-2, h-2, 0.0, 360.0);
fl_color(FL_GREEN);
arc(a+50, b, w, h, 0.0, 360.0);
fl_color(FL_BLACK);
fl_pie(a+1+50, b+1, w-1, h-1, 0.0, 360.0);
b+=44;
// ---- 2: draw arcs and pies
fl_color(FL_RED);
// arc(a-5, b-5, w+10, h+10, 45.0, 315.0);
arc(a+1, b+1, w-2, h-2, 45.0, 315.0);
// arc(a+5, b+5, w-10, h-10, 45.0, 315.0);
// arc(a+10, b+10, w-20, h-20, 45.0, 315.0);
fl_color(FL_GREEN);
arc(a, b, w, h, 45.0, 315.0);
arc(a+2, b+2, w-4, h-4, 45.0, 315.0);
fl_color(FL_BLACK);
// fl_arc(a-5, b-5, w+10, h+10, 45.0, 315.0);
fl_arc(a+1, b+1, w-1, h-1, 45.0, 315.0);
// fl_arc(a+5, b+5, w-10, h-10, 45.0, 315.0);
// fl_arc(a+10, b+10, w-20, h-20, 45.0, 315.0);
fl_color(FL_RED);
// ----
arc(a+1+50, b+1, w-2, h-2, 45.0, 315.0);
fl_line(a+50+20, b+20, a+50+20+14, b+20-14);
fl_line(a+50+20, b+20, a+50+20+14, b+20+14);
fl_color(FL_GREEN);
arc(a+50, b, w, h, 45.0, 315.0);
fl_line(a+50+21, b+20, a+50+21+14, b+20-14);
fl_line(a+50+21, b+20, a+50+21+14, b+20+14);
fl_color(FL_BLACK);
fl_pie(a+1+50, b+1, w-1, h-1, 45.0, 315.0);
}
#if HAVE_GL
class Ut_GL_Circle_Test : public Fl_Gl_Window {
public:
Ut_GL_Circle_Test(int x, int y, int w, int h)
: Fl_Gl_Window(x, y, w, h) {
box(FL_FLAT_BOX);
}
void draw() FL_OVERRIDE {
draw_begin();
Fl_Window::draw();
draw_circles();
draw_end();
}
};
#endif
class Ut_Native_Circle_Test : public Fl_Window {
public:
Ut_Native_Circle_Test(int x, int y, int w, int h)
: Fl_Window(x, y, w, h) {
box(FL_FLAT_BOX);
end();
}
void draw() FL_OVERRIDE {
Fl_Window::draw();
draw_circles();
}
};
//
//------- test the circle drawing capabilities of this implementation ----------
//
class Ut_Circle_Test : public Fl_Group {
public:
static Fl_Widget *create() {
return new Ut_Circle_Test(UT_TESTAREA_X, UT_TESTAREA_Y, UT_TESTAREA_W, UT_TESTAREA_H);
}
Ut_Circle_Test(int x, int y, int w, int h)
: Fl_Group(x, y, w, h) {
label("Testing fast circle, arc, and pie drawing\n\n"
"No red lines should be visible. "
"The green outlines should not be overwritten by circle drawings.");
align(FL_ALIGN_INSIDE|FL_ALIGN_BOTTOM|FL_ALIGN_LEFT|FL_ALIGN_WRAP);
box(FL_BORDER_BOX);
int a = x+16, b = y+34;
Fl_Box* t = new Fl_Box(a, b-24, 80, 18, "native");
t->align(FL_ALIGN_LEFT|FL_ALIGN_INSIDE);
/* NativeCircleTest *nr = */ new Ut_Native_Circle_Test(a+23, b-1, 200, 200);
t = new Fl_Box(a, b, 18, 18, "1");
t->box(FL_ROUNDED_BOX); t->color(FL_YELLOW);
t->tooltip(// Title:
"Testing circle alignment.\n\n"
// Description:
"This draws a black circle and a black disc, surrounded by a green frame.\n\n"
// Things to look out for:
"If green pixels are missing, circle drawing must be adjusted (see fl_arc, fl_pie).\n\n"
"If red pixels are showing, line width or aligment may be off."
);
b+=44;
t = new Fl_Box(a, b, 18, 18, "2");
t->box(FL_ROUNDED_BOX); t->color(FL_YELLOW);
t->tooltip(// Title:
"Testing arc and pie drawing.\n\n"
// Description:
"This draws a black frame, surrounded on the inside and outside by a green frame.\n\n"
// Things to look out for:
"If green pixels are missing or red pixels are showing, rectangular frame drawing schould be adjusted (see fl_rect).\n\n"
"If red pixels show in the corners of the frame in hidpi mode, line endings should be adjusted."
);
#if HAVE_GL
a = x+16+250, b = y+34;
t = new Fl_Box(a, b-24, 80, 18, "OpenGL");
t->align(FL_ALIGN_LEFT|FL_ALIGN_INSIDE);
/* GLCircleTest *glr = */ new Ut_GL_Circle_Test(a+31, b-1, 200, 200);
t = new Fl_Box(a, b, 26, 18, "1a");
t->box(FL_ROUNDED_BOX); t->color(FL_YELLOW);
t->tooltip(// Title:
"Testing circle alignment.\n\n"
// Description:
"This draws a black circle and a black disc, surrounded by a green frame.\n\n"
// Things to look out for:
"If green pixels are missing, circle drawing must be adjusted (see fl_arc, fl_pie).\n\n"
"If red pixels are showing, line width or aligment may be off."
);
b+=44;
t = new Fl_Box(a, b, 26, 18, "2a");
t->box(FL_ROUNDED_BOX); t->color(FL_YELLOW);
t->tooltip(// Title:
"Testing arc and pie drawing.\n\n"
// Description:
"This draws a black frame, surrounded on the inside and outside by a green frame.\n\n"
// Things to look out for:
"If green pixels are missing or red pixels are showing, rectangular frame drawing schould be adjusted (see fl_rect).\n\n"
"If red pixels show in the corners of the frame in hidpi mode, line endings should be adjusted."
);
#endif
t = new Fl_Box(x+w-1,y+h-1, 1, 1);
resizable(t);
}
};
UnitTest circle(UT_TEST_CIRCLES, "Circles and Arcs", Ut_Circle_Test::create);
|
