/usr/include/geomview/sphere.h is in libgeomview-dev 1.9.5-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 | /* Copyright (C) 1992-1998 The Geometry Center
* Copyright (C) 1998-2000 Stuart Levy, Tamara Munzner, Mark Phillips
*
* This file is part of Geomview.
*
* Geomview is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* Geomview is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Geomview; see the file COPYING. If not, write
* to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139,
* USA, or visit http://www.gnu.org.
*/
#ifndef SPHERE_H
#define SPHERE_H
#include "geomclass.h"
typedef struct Sphere Sphere;
extern GeomClass *SphereClass;
void SphereMinMax(Sphere *sphere, HPoint3 *min, HPoint3 *max);
void SphereCenter(Sphere *sphere, HPoint3 *center);
float SphereRadius(Sphere *sphere);
void SphereSwitchSpace(Sphere *sphere, int space);
/* Makes sphere encompassing both other spheres - new sphere if dest == NULL,
* just puts results in dest otherwise */
Sphere *SphereUnion3(Sphere *a, Sphere *b, Sphere *dest);
/* points is actually a (2*dim)-element array containing the points with
* the minimum and maximum x, y, and z coordinates. */
void SphereEncompassBoundsN(Sphere *sphere, HPoint3 *points, int dim);
void SphereEncompassBounds(Sphere *sphere, HPoint3 *points);
/* Returns zero if didn't change sphere, non-zero if did */
int SphereAddHPt3(Sphere *sphere, HPoint3 *point, Transform T);
int SphereAddHPt3N(Sphere *sphere, HPoint3 *point, int n, Transform T);
int SphereAddHPtN(Sphere *sphere, HPointN *point,
Transform T, TransformN *TN, int *axes);
int SphereAddHPtNN(Sphere *sphere, HPointN **point, int n,
Transform T, TransformN *TN, int *axes);
int SphereAddPoint(Sphere *sphere, float *point, int dim, int pdim,
Transform T, TransformN *TN, int *axes);
int SphereAddPoints(Sphere *sphere,
float *point, int dim, int pdim, int n,
Transform T, TransformN *TN, int *axes);
/* Modifies sphere to surround all points */
void SphereEncompassHPt3N(Sphere *sphere, HPoint3 *point, int n, Transform T);
void SphereEncompassHPtNN(Sphere *sphere, HPointN **point, int n,
Transform T, TransformN *TN, int *axes);
void SphereEncompassPoints(Sphere *sphere,
float *points, int dim, int pdim, int n,
Transform T, TransformN *TN, int *axes);
/* Finds points with the maximum dimensional span - spanPts is an array
* of 6 elements (2 points per axis) */
void MaxDimensionalSpan(HPoint3 *spanPts, HPoint3 *point);
void MaxDimensionalSpanN(HPoint3 *spanPts, HPoint3 *points, int n);
void MaxDimensionalSpanHPtN(HPointN **spanPts, HPointN *pt);
void MaxDimensionalSpanHPtNN(HPointN **spanPts, HPointN **points, int n);
void MaxNDimensionalSpanN(HPointN **spanPts,
float *points, int dim, int pdim, int n);
#endif
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