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58 lines
2.1 KiB
58 lines
2.1 KiB
// David Eberly, Geometric Tools, Redmond WA 98052
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// Copyright (c) 1998-2021
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// Distributed under the Boost Software License, Version 1.0.
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// https://www.boost.org/LICENSE_1_0.txt
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// https://www.geometrictools.com/License/Boost/LICENSE_1_0.txt
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// Version: 4.6.2020.04.08
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#pragma once
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#include <Mathematics/Vector3.h>
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#include <vector>
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namespace gte
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{
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template <typename Real>
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class ConvexMesh3
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{
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public:
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// A client of ConvexMesh3 is responsible for populating the vertices
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// and indices so that the resulting mesh represents a convex
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// polyhedron.
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// 1. All elements of 'vertices' must be used by the polyhedron.
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// 2. The triangle faces must have the same chirality when viewed
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// from outside the polyhedron. They are all counterclockwise
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// oriented or all clockwise oriented when viewed from outside
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// the polyhedron.
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// 3. The Real type must be an arbitrary-precision type that
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// supports division.
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// 4. The polyhedron can be degenerate. All the possibilities are
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// listed next.
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// point:
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// vertices.size() == 1, triangles.size() = 0
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//
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// line segment:
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// vertices.size() == 2, triangles.size() == 0
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//
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// convex polygon:
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// vertices.size() >= 3, triangles.size() > 0 and the
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// vertices are coplanar
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//
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// convex polyhedron:
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// vertices.size() >= 3, triangles.size() > 0 and the
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// vertices are not coplanar
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static int constexpr CFG_EMPTY = 0x00000000;
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static int constexpr CFG_POINT = 0x00000001;
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static int constexpr CFG_SEGMENT = 0x00000002;
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static int constexpr CFG_POLYGON = 0x00000004;
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static int constexpr CFG_POLYHEDRON = 0x00000008;
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using Vertex = Vector3<Real>;
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using Triangle = std::array<int, 3>;
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int configuration = CFG_EMPTY;
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std::vector<Vertex> vertices;
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std::vector<Triangle> triangles;
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};
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}
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