52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
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// This source code is property of the Computer Graphics and Visualization
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// chair of the TU Dresden. Do not distribute!
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// Copyright (C) CGV TU Dresden - All Rights Reserved
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#pragma once
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#include <array>
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#include <Eigen/Core>
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class GridTraverser
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{
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//ray origin and direction
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Eigen::Vector3f orig,dir;
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//grid cell extents
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Eigen::Vector3f cellExtents;
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//current cell index
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Eigen::Vector3i current;
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/* you can additional attributes for incremental calculation here */
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public:
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//default constructor
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GridTraverser();
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//constructs a grid traverser for a given ray with origin o, and ray direction d for a grid with cell extents ce
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GridTraverser(const Eigen::Vector3f& o, const Eigen::Vector3f&d, const Eigen::Vector3f ce);
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//accessor of ray origin
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Eigen::Vector3f& Origin();
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//const accessor of ray origin
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const Eigen::Vector3f& Origin() const;
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//accessor of ray direction
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Eigen::Vector3f& Direction();
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//const accessor of ray direction
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const Eigen::Vector3f& Direction() const;
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//set cell extents
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void SetCellExtents(const Eigen::Vector3f& cellExtent);
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//init at origin cell
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void Init();
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//step to next cell along ray direction
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void operator++(int);
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//return current cell index
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Eigen::Vector3i operator*();
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};
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