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
|
/*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef QEMU_RECT_H
#define QEMU_RECT_H
typedef struct QemuRect {
int16_t x;
int16_t y;
uint16_t width;
uint16_t height;
} QemuRect;
static inline void qemu_rect_init(QemuRect *rect,
int16_t x, int16_t y,
uint16_t width, uint16_t height)
{
rect->x = x;
rect->y = y;
rect->width = width;
rect->height = height;
}
static inline void qemu_rect_translate(QemuRect *rect,
int16_t dx, int16_t dy)
{
rect->x += dx;
rect->y += dy;
}
static inline bool qemu_rect_intersect(const QemuRect *a, const QemuRect *b,
QemuRect *res)
{
int16_t x1, x2, y1, y2;
x1 = MAX(a->x, b->x);
y1 = MAX(a->y, b->y);
x2 = MIN(a->x + a->width, b->x + b->width);
y2 = MIN(a->y + a->height, b->y + b->height);
if (x1 >= x2 || y1 >= y2) {
if (res) {
qemu_rect_init(res, 0, 0, 0, 0);
}
return false;
}
if (res) {
qemu_rect_init(res, x1, y1, x2 - x1, y2 - y1);
}
return true;
}
#endif
|
