1/**************************************************************************/
2/* editor_atlas_packer.h */
3/**************************************************************************/
4/* This file is part of: */
5/* GODOT ENGINE */
6/* https://godotengine.org */
7/**************************************************************************/
8/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
9/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
10/* */
11/* Permission is hereby granted, free of charge, to any person obtaining */
12/* a copy of this software and associated documentation files (the */
13/* "Software"), to deal in the Software without restriction, including */
14/* without limitation the rights to use, copy, modify, merge, publish, */
15/* distribute, sublicense, and/or sell copies of the Software, and to */
16/* permit persons to whom the Software is furnished to do so, subject to */
17/* the following conditions: */
18/* */
19/* The above copyright notice and this permission notice shall be */
20/* included in all copies or substantial portions of the Software. */
21/* */
22/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
23/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
24/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
25/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
26/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
27/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
28/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
29/**************************************************************************/
30
31#ifndef EDITOR_ATLAS_PACKER_H
32#define EDITOR_ATLAS_PACKER_H
33
34#include "core/templates/vector.h"
35#include "scene/resources/bit_map.h"
36
37struct Vector2;
38struct Vector2i;
39
40class EditorAtlasPacker {
41public:
42 struct Chart {
43 Vector<Vector2> vertices;
44 struct Face {
45 int vertex[3] = { 0 };
46 };
47 Vector<Face> faces;
48 bool can_transpose = false;
49
50 Vector2 final_offset;
51 bool transposed = false;
52 };
53
54private:
55 struct PlottedBitmap {
56 int chart_index = 0;
57 Vector2i offset;
58 int area = 0;
59 Vector<int> top_heights;
60 Vector<int> bottom_heights;
61 bool transposed = false;
62
63 Vector2 final_pos;
64
65 bool operator<(const PlottedBitmap &p_bm) const {
66 return area > p_bm.area;
67 }
68 };
69
70public:
71 static void chart_pack(Vector<Chart> &charts, int &r_width, int &r_height, int p_atlas_max_size = 2048, int p_cell_resolution = 4);
72};
73
74#endif // EDITOR_ATLAS_PACKER_H
75