/usr/include/geomview/private/pickP.h is in libgeomview-dev 1.9.4-3.
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 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 | /* Copyright (C) 1992-1998 The Geometry Center
* Copyright (C) 1998-2000 Stuart Levy, Tamara Munzner, Mark Phillips
* Copyright (C) 2006-2007 Claus-Justus Heine
*
* 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.
*/
/* Authors: Charlie Gunn, Stuart Levy, Tamara Munzner, Mark Phillips,
* Celeste Fowler */
#ifndef PICKPDEF
#define PICKPDEF
/*
* Private definitions for picking.
*/
#include "pick.h"
#include "ooglutil.h"
struct Pick {
Point3 got;
float thresh;
int want; /* Fields wanted */
int found; /* Fields found */
vvec gcur; /* Path to the current primitive -
used for recursion */
vvec gpath; /* Path to picked primitive */
Geom *gprim; /* Picked primitive */
HPoint3 v; /* picked vertex, if any */
int vi; /* index of picked vertex */
HPoint3 e[2]; /* endpoints of picked edge, if any */
int ei[2]; /* indices of endpoints of picked edge */
Transform Tprim; /* gprim -> screen */
Transform Tmirp;
Transform Tw;
Transform Tself;
/* for ND-viewing. */
TransformN *TprimN;
TransformN *TmirpN;
int axes[4]; /* the relevant sub-space of the output of
* TprimN.
*/
TransformN *TwN;
TransformN *TselfN;
HPoint3 *f; /* array of vertices of picked face, if any */
int fn; /* number of vertices in array f */
int fi; /* index of picked face */
Transform Ts2n; /* NDC to screen tfm */
Transform Tc2n; /* NDC to camera tfm */
Transform Tw2n; /* NDC to world (global) tfm */
float x0, y0; /* NDC coords of original pick */
};
/*
* PickFace() is used to test a face for a pick and modify the pick
* structure if necessary.
* n_verts is the number of vertices in the face.
* verts is the list of vertices in the face.
* pick is the pick structure.
* ap is the appearance (not currently used).
* The following fields of the pick structure will be filled in:
* found - what has been found.
* vi - index of the picked vertex in the verts array.
* ei - indices of the endpoints of the picked edge in the verts array.
* f - freed if non-NULL and set to NULL
* PickFace() returns nonzero if something was picked. The calling
* program is responsible for using the data returned in the pick
* structure to fill in the actual points and correct the indices.
*/
int PickFace(int n_verts, Point3 *verts, Pick *pick, Appearance *ap);
/*
* PickFillIn() is used to fill in the fields of a pick structure once
* a pick has been found.
* pick is the pick structure.
* n_verts is the number of points in the face.
* got is the interesection of the pick ray with the face.
* vertex is the index of the picked vertex (-1 if none).
* edge is the index of the first vertex of the hit line (-1 if none).
* ep is the picked point on the edge.
* The routine fills in the following fields of the pick structure:
* got - filled in with the parameter got.
* found - filled in with what was found.
* vi - the index of the picked vertex.
* ei - the indices of the endpoints of the picked edge.
* f - freed if non-null and set to null.
* fn - the number of vertices in the face
* gpath - the path to the picked primitive (copy of gcur)
* The rest of the fields are left unchanged.
* Returns pick->found.
*/
int PickFillIn(Pick *pick, int n_verts, Point3 *got, int vertex,
int edge, Appearance *ap);
#endif /*PICKPDEF*/
/*
* Local Variables: ***
* mode: c ***
* c-basic-offset: 4 ***
* End: ***
*/
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