mirror of https://github.com/Relintai/voxelman.git
68 lines
2.6 KiB
C++
68 lines
2.6 KiB
C++
//Please note, that these tables were modified to get support for uv-mapping!
|
|
|
|
//================================================================================
|
|
//
|
|
// The MarchingCubes Algorithm look-up tables
|
|
//
|
|
// Copyright 2009 by Eric Lengyel
|
|
//
|
|
// The following data originates from Eric Lengyel's MarchingCubes Algorithm.
|
|
// http://transvoxel.org/
|
|
//
|
|
// The data in this file may be freely used in implementations of the MarchingCubes
|
|
// Algorithm. If you do use this data, or any transformation of it, in your own
|
|
// projects, commercial or otherwise, please give credit by indicating in your
|
|
// source code that the data is part of the author's implementation of the
|
|
// MarchingCubes Algorithm and that it came from the web address given above.
|
|
// (Simply copying and pasting the two lines of the previous paragraph would be
|
|
// perfect.) If you distribute a commercial product with source code included,
|
|
// then the credit in the source code is required.
|
|
//
|
|
// If you distribute any kind of product that uses this data, a credit visible to
|
|
// the end-user would be appreciated, but it is not required. However, you may
|
|
// not claim that the entire implementation of the MarchingCubes Algorithm is your
|
|
// own if you use the data in this file or any transformation of it.
|
|
//
|
|
// The format of the data in this file is described in the dissertation "Voxel-
|
|
// Based Terrain for Real-Time Virtual Simulations", available at the web page
|
|
// given above. References to sections and figures below pertain to that paper.
|
|
//
|
|
// The contents of this file are protected by copyright and may not be publicly
|
|
// reproduced without permission.
|
|
//
|
|
//================================================================================
|
|
|
|
#ifndef MARCHING_CUBES_TABLES_H
|
|
#define MARCHING_CUBES_TABLES_H
|
|
|
|
#include "core/math/vector3.h"
|
|
|
|
namespace MarchingCubes {
|
|
|
|
// The RegularCellData structure holds information about the triangulation
|
|
// used for a single equivalence class in the modified Marching Cubes algorithm,
|
|
// described in Section 3.2.
|
|
|
|
struct RegularCellData {
|
|
unsigned char geometryCounts; // High nibble is vertex count, low nibble is triangle count.
|
|
unsigned char vertexIndex[15]; // Groups of 3 indexes giving the triangulation.
|
|
|
|
long GetVertexCount(void) const {
|
|
return (geometryCounts >> 4);
|
|
}
|
|
|
|
long GetTriangleCount(void) const {
|
|
return (geometryCounts & 0x0F);
|
|
}
|
|
};
|
|
|
|
extern const unsigned char regularCellClass[256];
|
|
extern const RegularCellData regularCellData[16];
|
|
extern const unsigned short regularVertexData[256][15];
|
|
|
|
extern const Vector3 marching_cube_vertices[8];
|
|
|
|
} // namespace MarchingCubes
|
|
|
|
#endif
|