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
|
#include <daguerre.hpp>
void overlay_encode(
daguerre::hilbert_color &dest, const daguerre::rgb24 &src) {
if (src.r != 0xff || src.g != 0x00 || src.b != 0xff)
daguerre::encode(dest, src);
}
void invert(daguerre::rgb24 &dest, const daguerre::rgb24 &src) {
dest.r = 255 - src.r;
dest.g = 255 - src.g;
dest.b = 255 - src.b;
}
int main(int, char **) {
auto framebuffer = daguerre::get_hilbert_framebuffer();
daguerre::image<daguerre::rgb24> burden;
std::FILE *burden_file = std::fopen("/assets/burden.ppm", "r");
daguerre::try_load_ppm(burden_file, burden);
std::fclose(burden_file);
daguerre::image<daguerre::rgb24> pointer;
std::FILE *pointer_file = std::fopen("/assets/pointer.ppm", "r");
daguerre::try_load_ppm(pointer_file, pointer);
std::fclose(pointer_file);
int32_t width = burden.width < framebuffer.width
? burden.width : framebuffer.width;
int32_t height = burden.height < framebuffer.height
? burden.height : framebuffer.height;
unsigned x = (framebuffer.width - width) / 2;
unsigned y = (framebuffer.height - height) / 2;
int32_t new_mouse_x = width / 2;
int32_t new_mouse_y = height / 2;
int32_t old_mouse_x = new_mouse_x;
int32_t old_mouse_y = new_mouse_y;
bool was_left_mouse_down = false;
daguerre::overlay_region<
daguerre::hilbert_color, daguerre::rgb24, daguerre::encode>(
framebuffer, x, y, burden, 0, 0, width, height);
while (1) {
__euler_mouse_buttons mouse_buttons;
int16_t mouse_change_x, mouse_change_y;
uint32_t key_packet;
__euler_input_packet_type packet_type = __euler_get_input_packet(
mouse_buttons, mouse_change_x, mouse_change_y, key_packet);
bool anything_changed = false;
bool should_invert = false;
if (packet_type == __EULER_IPT_MOUSE) {
if (mouse_change_x != 0 || mouse_change_y != 0) {
old_mouse_x = new_mouse_x;
old_mouse_y = new_mouse_y;
new_mouse_x += mouse_change_x;
new_mouse_y += mouse_change_y;
if (new_mouse_x < 0)
new_mouse_x = 0;
else if ((unsigned)new_mouse_x > width - pointer.width)
new_mouse_x = width - pointer.width;
if (new_mouse_y < 0)
new_mouse_y = 0;
else if ((unsigned)new_mouse_y > height - pointer.height)
new_mouse_y = height - pointer.height;
anything_changed = true;
}
if (!was_left_mouse_down && (mouse_buttons & __EULER_MB_LEFT))
should_invert = true;
was_left_mouse_down = mouse_buttons & __EULER_MB_LEFT;
}
else if (packet_type == __EULER_IPT_KEYBOARD)
if ((key_packet & 0x0400ff) == 0x00005a)
should_invert = true;
if (should_invert) {
//this works with the current implementation of overlay_region, but
//maybe it would be better to have a dedicated function for when the
//two regions are exactly the same, given the comment on overlay_region.
daguerre::overlay_region<daguerre::rgb24, daguerre::rgb24, invert>(
burden, 0, 0, burden, 0, 0, width, height);
daguerre::overlay_region<
daguerre::hilbert_color, daguerre::rgb24, daguerre::encode>(
framebuffer, x, y, burden, 0, 0, width, height);
anything_changed = true;
}
if (anything_changed) {
daguerre::overlay_region<
daguerre::hilbert_color, daguerre::rgb24, daguerre::encode>(
framebuffer, old_mouse_x + x, old_mouse_y + y, burden,
old_mouse_x, old_mouse_y, pointer.width, pointer.height);
daguerre::overlay_region<
daguerre::hilbert_color, daguerre::rgb24, overlay_encode>(
framebuffer, new_mouse_x + x, new_mouse_y + y,
pointer, 0, 0, pointer.width, pointer.height);
}
}
}
|