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use guillotiere::*;
use std::mem::transmute;
use guillotiere::AtlasAllocator as guillotiere_atlas_allocator_t;
use guillotiere::SimpleAtlasAllocator as guillotiere_simple_atlas_allocator_t;
use guillotiere::ChangeList as guillotiere_change_list_t;
#[repr(C)]
#[no_mangle]
pub struct guillotiere_size_t {
pub width: i32,
pub height: i32,
}
#[repr(C)]
#[no_mangle]
pub struct guillotiere_rectangle_t {
pub min_x: i32,
pub min_y: i32,
pub max_x: i32,
pub max_y: i32,
}
#[repr(C)]
#[no_mangle]
pub struct guillotiere_change_t {
pub old_alloc: guillotiere_allocation_t,
pub new_alloc: guillotiere_allocation_t,
}
#[repr(C)]
#[no_mangle]
pub struct guillotiere_changes_t {
pub changes: *const guillotiere_change_t,
pub count: usize,
}
#[repr(C)]
#[no_mangle]
pub struct guillotiere_failures_t {
pub failures: *const guillotiere_allocation_t,
pub count: usize,
}
#[repr(C)]
#[no_mangle]
pub struct guillotiere_alloc_id_t {
id: u32,
}
#[repr(C)]
#[no_mangle]
pub struct guillotiere_allocation_t {
pub id: guillotiere_alloc_id_t,
pub rectangle: guillotiere_rectangle_t,
}
#[repr(C)]
#[no_mangle]
pub struct guillotiere_allocator_options_t {
pub snap_size: i32,
pub small_size_threshold: i32,
pub large_size_threshold: i32,
}
fn from_ffi_options(options: &guillotiere_allocator_options_t) -> AllocatorOptions {
AllocatorOptions {
snap_size: options.snap_size,
small_size_threshold: options.small_size_threshold,
large_size_threshold: options.large_size_threshold,
}
}
#[no_mangle]
pub unsafe extern "C"
fn guillotiere_atlas_allocator_new(size: guillotiere_size_t) -> *mut guillotiere_atlas_allocator_t {
Box::into_raw(Box::new(AtlasAllocator::new(transmute(size))))
}
#[no_mangle]
pub unsafe extern "C"
fn guillotiere_atlas_allocator_with_options(size: guillotiere_size_t, options: &guillotiere_allocator_options_t) -> *mut guillotiere_atlas_allocator_t {
let options = from_ffi_options(options);
Box::into_raw(Box::new(AtlasAllocator::with_options(transmute(size), &options)))
}
#[no_mangle]
pub unsafe extern "C"
fn guillotiere_atlas_allocator_delete(atlas: *mut guillotiere_atlas_allocator_t) {
Box::from_raw(atlas);
}
#[no_mangle]
pub unsafe extern "C"
fn guillotiere_atlas_allocator_size(atlas: &guillotiere_atlas_allocator_t) -> guillotiere_size_t {
transmute(atlas.size())
}
#[no_mangle]
pub unsafe extern "C"
fn guillotiere_atlas_allocator_allocate(atlas: &mut guillotiere_atlas_allocator_t, size: guillotiere_size_t, result: &mut guillotiere_allocation_t) -> bool {
if let Some(alloc) = atlas.allocate(transmute(size)) {
*result = transmute(alloc);
return true;
}
false
}
#[no_mangle]
pub unsafe extern "C"
fn guillotiere_atlas_allocator_deallocate(atlas: &mut guillotiere_atlas_allocator_t, id: guillotiere_alloc_id_t) {
atlas.deallocate(transmute(id));
}
#[no_mangle]
pub unsafe extern "C"
fn guillotiere_atlas_allocator_grow(atlas: &mut guillotiere_atlas_allocator_t, new_size: guillotiere_size_t) {
atlas.grow(transmute(new_size));
}
#[no_mangle]
pub unsafe extern "C"
fn guillotiere_atlas_allocator_rearrange(atlas: &mut guillotiere_atlas_allocator_t, change_list: &mut guillotiere_change_list_t) {
std::mem::swap(change_list, &mut atlas.rearrange());
}
#[no_mangle]
pub unsafe extern "C"
fn guillotiere_atlas_allocator_resize_and_rearrange(atlas: &mut guillotiere_atlas_allocator_t, new_size: guillotiere_size_t, change_list: &mut guillotiere_change_list_t) {
std::mem::swap(change_list, &mut atlas.resize_and_rearrange(transmute(new_size)));
}
#[no_mangle]
pub unsafe extern "C"
fn guillotiere_change_list_new() -> *mut guillotiere_change_list_t {
Box::into_raw(Box::new(ChangeList { changes: Vec::new(), failures: Vec::new() }))
}
#[no_mangle]
pub unsafe extern "C"
fn guillotiere_change_list_delete(change_list: *mut guillotiere_change_list_t) {
Box::from_raw(change_list);
}
#[no_mangle]
pub unsafe extern "C"
fn guillotiere_change_list_changes(change_list: &guillotiere_change_list_t) -> guillotiere_changes_t {
guillotiere_changes_t {
changes: transmute(change_list.changes.as_ptr()),
count: change_list.changes.len(),
}
}
#[no_mangle]
pub unsafe extern "C"
fn guillotiere_change_list_failures(change_list: &guillotiere_change_list_t) -> guillotiere_failures_t {
guillotiere_failures_t {
failures: transmute(change_list.failures.as_ptr()),
count: change_list.failures.len(),
}
}
#[no_mangle]
pub unsafe extern "C"
fn guillotiere_simple_atlas_allocator_new(size: guillotiere_size_t) -> *mut guillotiere_simple_atlas_allocator_t {
Box::into_raw(Box::new(SimpleAtlasAllocator::new(transmute(size))))
}
#[no_mangle]
pub unsafe extern "C"
fn guillotiere_simple_atlas_allocator_with_options(size: guillotiere_size_t, options: &guillotiere_allocator_options_t) -> *mut guillotiere_simple_atlas_allocator_t {
let options = from_ffi_options(options);
Box::into_raw(Box::new(SimpleAtlasAllocator::with_options(transmute(size), &options)))
}
#[no_mangle]
pub unsafe extern "C"
fn guillotiere_simple_atlas_allocator_delete(atlas: *mut guillotiere_simple_atlas_allocator_t) {
Box::from_raw(atlas);
}
#[no_mangle]
pub unsafe extern "C"
fn guillotiere_simple_atlas_allocator_size(atlas: &guillotiere_simple_atlas_allocator_t) -> guillotiere_size_t {
transmute(atlas.size())
}
#[no_mangle]
pub unsafe extern "C"
fn guillotiere_simple_atlas_allocator_allocate(atlas: &mut guillotiere_simple_atlas_allocator_t, size: guillotiere_size_t, result: &mut guillotiere_rectangle_t) -> bool {
if let Some(alloc) = atlas.allocate(transmute(size)) {
*result = transmute(alloc);
return true;
}
false
}
#[no_mangle]
pub unsafe extern "C"
fn guillotiere_simple_atlas_allocator_grow(atlas: &mut guillotiere_simple_atlas_allocator_t, new_size: guillotiere_size_t) {
atlas.grow(transmute(new_size));
}
#[no_mangle]
pub unsafe extern "C"
fn guillotiere_simple_atlas_allocator_init_from_allocator(atlas: &mut guillotiere_simple_atlas_allocator_t, src: &guillotiere_atlas_allocator_t) {
atlas.init_from_allocator(src);
}
#[no_mangle]
pub unsafe extern "C"
fn guillotiere_allocator_options_default(options: &mut guillotiere_allocator_options_t) {
*options = guillotiere_allocator_options_t {
snap_size: DEFAULT_OPTIONS.snap_size,
small_size_threshold: DEFAULT_OPTIONS.small_size_threshold,
large_size_threshold: DEFAULT_OPTIONS.large_size_threshold,
};
}