48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
#pragma once
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/** Implement the Marching Cubes algorithm
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*
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* Marching cubes:
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* W. E. Lorensen, H. E. Cline, 1987
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* ``Marching cubes: a high resulution 3D surface construction algorithm''
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* <http://fab.cba.mit.edu/classes/S62.12/docs/Lorensen_marching_cubes.pdf>
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*/
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#include <vector>
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#include "Mesh.hpp"
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#include "Implicit.hpp"
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#include "common_structures.hpp"
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class MarchingCubes {
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private:
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typedef unsigned char intersect_t;
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public:
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MarchingCubes(
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const ImplicitSurface& surface,
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const Cuboid& box=Cuboid(
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Point(-20, -20, -20),
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Point(20, 20, 20)),
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double resolution=.25);
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/** Add a starting point hint
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*
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* A hint is a cuboid that should intersect at least once the surface,
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* such that the marching cube will find the surface there and will be
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* able to follow it.
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* If at least a hint is given, the algorithm will expect that at least
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* a hint per disjoint surface is given, ie. that it is safe to only
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* follow the surface starting from the hints, and ignoring the parts
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* of the grid that are "far" from the hints.
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*/
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void add_hint(const Cuboid& hint);
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Mesh operator()();
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private:
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const ImplicitSurface& surface;
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Cuboid box;
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double resolution;
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std::vector<Cuboid> hints;
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};
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