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69 lines
2.4 KiB
C++
69 lines
2.4 KiB
C++
//##################################################################################################
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//
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// Custom Visualization Core library
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// Copyright (C) 2011-2012 Ceetron AS
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//
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// This library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.
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//
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// See the GNU General Public License at <<http://www.gnu.org/licenses/gpl.html>>
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// for more details.
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//
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//##################################################################################################
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#pragma once
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#include "cvfArray.h"
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namespace cvf {
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//==================================================================================================
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//
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//
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//
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//==================================================================================================
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class VertexWelder
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{
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public:
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VertexWelder();
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void initialize(double weldingDistance, double cellSize, uint numBuckets);
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void reserveVertices(uint vertexCount);
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uint weldVertex(const Vec3f& vertex, bool* wasWelded);
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uint vertexCount() const;
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const Vec3f& vertex(uint index) const;
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ref<Vec3fArray> createVertexArray() const;
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private:
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uint getGridCellBucket(int x, int y, int z) const;
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uint locateVertexInBucket(const Vec3f& v, uint bucket) const;
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uint addVertexToBucket(const Vec3f& v, uint bucket);
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private:
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double m_weldEpsilon; // Welding tolerance, radius around vertex defining welding neighborhood
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double m_cellSize; // Grid cell size; must be at least 2*m_weldEpsilon
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uint m_numBuckets; // Number of hash buckets to map grid cells into
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UIntArray m_first; // Start of linked list for each bucket. Number of buckets long
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std::vector<uint> m_next; // Links each vertex to next in linked list. Always numVertices long, will grow as vertices are added
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std::vector<Vec3f> m_vertex; // Unique vertices within tolerance
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};
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}
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