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
|
use guillotiere::{AtlasAllocator, Size};
pub struct Allocator {
raw: AtlasAllocator,
allocations: usize,
}
impl Allocator {
pub fn new(size: u32) -> Allocator {
let raw = AtlasAllocator::new(Size::new(size as i32, size as i32));
Allocator {
raw,
allocations: 0,
}
}
pub fn allocate(&mut self, width: u32, height: u32) -> Option<Region> {
let allocation =
self.raw.allocate(Size::new(width as i32, height as i32))?;
self.allocations += 1;
Some(Region { allocation })
}
pub fn deallocate(&mut self, region: &Region) {
self.raw.deallocate(region.allocation.id);
self.allocations = self.allocations.saturating_sub(1);
}
pub fn is_empty(&self) -> bool {
self.allocations == 0
}
}
pub struct Region {
allocation: guillotiere::Allocation,
}
impl Region {
pub fn position(&self) -> (u32, u32) {
let rectangle = &self.allocation.rectangle;
(rectangle.min.x as u32, rectangle.min.y as u32)
}
pub fn size(&self) -> (u32, u32) {
let size = self.allocation.rectangle.size();
(size.width as u32, size.height as u32)
}
}
impl std::fmt::Debug for Allocator {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "Allocator")
}
}
impl std::fmt::Debug for Region {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.debug_struct("Region")
.field("id", &self.allocation.id)
.field("rectangle", &self.allocation.rectangle)
.finish()
}
}
|