mirror of https://github.com/minetest/minetest.git
48 lines
2.3 KiB
C
48 lines
2.3 KiB
C
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/*
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Minetest
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Copyright (C) 2023 Vitaliy Lobachevskiy
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#pragma once
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#include <array>
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#include <vector>
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#include <irrlichttypes.h>
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#include <S3DVertex.h>
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/// Represents a triangle as three vertices.
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/// “Smallest” (according to <) vertex is expected to be first, others should follow in the counter-clockwise order.
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using Triangle = std::array<video::S3DVertex, 3>;
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/// Represents a quad as four vertices.
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/// Vertices should be in the counter-clockwise order.
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using Quad = std::array<video::S3DVertex, 4>;
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/// Compare two meshes for equality.
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/// @param vertices Vertices of the first mesh. Order doesn’t matter.
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/// @param indices Indices of the first mesh. Triangle order doesn’t matter. Vertex order in a triangle only matters for winding.
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/// @param expected The second mesh, in an expanded form. Must be sorted.
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/// @returns Whether the two meshes are equal.
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[[nodiscard]] bool checkMeshEqual(const std::vector<video::S3DVertex> &vertices, const std::vector<u16> &indices, const std::vector<Triangle> &expected);
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/// Compare two meshes for equality.
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/// @param vertices Vertices of the first mesh. Order doesn’t matter.
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/// @param indices Indices of the first mesh. Triangle order doesn’t matter. Vertex order in a triangle only matters for winding.
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/// @param expected The second mesh, in a quad form.
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/// @returns Whether the two meshes are equal.
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/// @note There are two ways to split a quad into 2 triangles; either is allowed.
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[[nodiscard]] bool checkMeshEqual(const std::vector<video::S3DVertex> &vertices, const std::vector<u16> &indices, const std::vector<Quad> &expected);
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