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use guillotiere::{AtlasAllocator, Size};
pub struct Allocator {
raw: AtlasAllocator,
}
impl Allocator {
pub fn new(size: u32) -> Allocator {
let raw = AtlasAllocator::new(Size::new(size as i32, size as i32));
Allocator { raw }
}
pub fn allocate(&mut self, width: u32, height: u32) -> Option<Region> {
let allocation = self
.raw
.allocate(Size::new(width as i32 + 2, height as i32 + 2))?;
Some(Region(allocation))
}
pub fn deallocate(&mut self, region: Region) {
self.raw.deallocate(region.0.id);
}
}
pub struct Region(guillotiere::Allocation);
impl Region {
pub fn position(&self) -> (u32, u32) {
let rectangle = &self.0.rectangle;
(rectangle.min.x as u32 + 1, rectangle.min.y as u32 + 1)
}
pub fn size(&self) -> (u32, u32) {
let size = self.0.rectangle.size();
(size.width as u32 - 2, size.height as u32 - 2)
}
}
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 {
write!(
f,
"Region {{ id: {:?}, rectangle: {:?} }}",
self.0.id, self.0.rectangle
)
}
}
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