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https://github.com/godotengine/godot
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75 lines
3 KiB
C++
75 lines
3 KiB
C++
/*************************************************************************/
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/* editor_atlas_packer.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef EDITOR_ATLAS_PACKER_H
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#define EDITOR_ATLAS_PACKER_H
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#include "core/math/vector2.h"
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#include "core/vector.h"
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#include "scene/resources/bit_map.h"
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class EditorAtlasPacker {
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public:
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struct Chart {
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Vector<Vector2> vertices;
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struct Face {
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int vertex[3];
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};
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Vector<Face> faces;
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bool can_transpose;
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Vector2 final_offset;
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bool transposed;
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};
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private:
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struct PlottedBitmap {
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int chart_index;
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Vector2i offset;
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int area;
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Vector<int> top_heights;
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Vector<int> bottom_heights;
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bool transposed;
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Vector2 final_pos;
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bool operator<(const PlottedBitmap &p_bm) const {
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return area > p_bm.area;
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}
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};
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static void _plot_triangle(Ref<BitMap> p_bitmap, Vector2i *vertices);
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public:
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static void chart_pack(Vector<Chart> &charts, int &r_width, int &r_height, int p_atlas_max_size = 2048, int p_cell_resolution = 4);
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};
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#endif // EDITOR_ATLAS_PACKER_H
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