taisei/src/util/rectpack.h

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/*
* This software is licensed under the terms of the MIT License.
* See COPYING for further information.
* ---
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* Copyright (c) 2011-2024, Lukas Weber <laochailan@web.de>.
* Copyright (c) 2012-2024, Andrei Alexeyev <akari@taisei-project.org>.
*/
#pragma once
#include "taisei.h"
#include "geometry.h"
#include "list.h"
#include "memory/mempool.h"
typedef struct RectPack RectPack;
typedef struct RectPackSection RectPackSection;
typedef MEMPOOL(RectPackSection) RectPackSectionPool;
typedef struct RectPackSectionSource RectPackSectionSource;
struct RectPackSection {
LIST_INTERFACE(RectPackSection);
RectPackSection *parent;
RectPackSection *sibling;
RectPackSection *children[2];
Rect rect;
};
struct RectPack {
RectPackSection root;
RectPackSection *unused_sections;
};
struct RectPackSectionSource {
RectPackSectionPool *pool;
MemArena *arena;
};
void rectpack_init(RectPack *rp, double width, double height)
attr_nonnull_all;
RectPackSection *rectpack_add(
RectPack *rp,
RectPackSectionSource secsrc,
double width,
double height,
bool allow_rotation
) attr_nonnull(1);
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Rect rectpack_section_rect(RectPackSection *s)
attr_nonnull(1);
void rectpack_reclaim(RectPack *rp, RectPackSectionSource secsrc, RectPackSection *s)
attr_nonnull(1, 3);
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bool rectpack_is_empty(RectPack *rp)
attr_nonnull(1);