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Linux Cross Reference
Tina6/tina-libs/tina/geometry/geomPlane_trans.c

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  1 /**********
  2  * 
  3  * This file is part of the TINA Open Source Image Analysis Environment
  4  * henceforth known as TINA
  5  *
  6  * TINA is free software; you can redistribute it and/or modify
  7  * it under the terms of the GNU General Public License as 
  8  * published by the Free Software Foundation.
  9  *
 10  * TINA is distributed in the hope that it will be useful,
 11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 13  * GNU General Public License for more details.
 14  *
 15  * You should have received a copy of the GNU General Public License
 16  * along with TINA; if not, write to the Free Software Foundation, Inc., 
 17  * 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 18  *
 19  * ANY users of TINA who require exemption from the existing licence must
 20  * negotiate a new licence with Dr. Neil.A.Thacker, the sole agent for
 21  * the University of Manchester.
 22  *
 23  **********
 24  * 
 25  * Program :    TINA
 26  * File    :  $Source: /home/tina/cvs/tina-libs/tina/geometry/geomPlane_trans.c,v $
 27  * Date    :  $Date: 2002/12/09 11:51:23 $
 28  * Version :  $Revision: 1.1.1.1 $
 29  * CVS Id  :  $Id: geomPlane_trans.c,v 1.1.1.1 2002/12/09 11:51:23 cvstina Exp $
 30  *
 31  * Notes :
 32  *
 33  *********
 34 */
 35 
 36 
 37 #include "geomPlane_trans.h"
 38 
 39 #if HAVE_CONFIG_H
 40   #include <config.h>
 41 #endif
 42 
 43 #include <stdio.h>
 44 #include <math.h>
 45 #include <tina/sys/sysDef.h>
 46 #include <tina/sys/sysPro.h>
 47 #include <tina/math/mathDef.h>
 48 #include <tina/math/mathPro.h>
 49 #include <tina/geometry/geom_PlaneDef.h>
 50 
 51 void    plane_transform(Plane * plane, Transform3 trans)
 52 {
 53     if (plane == NULL)
 54         return;
 55 
 56     plane->p = trans3_pos(trans, plane->p);
 57     plane->n = trans3_vec(trans, plane->n);
 58 }
 59 
 60 Bool    plane_coincident(Plane * p1, Plane * p2, double dotthres, double poserror)
 61 {
 62     double  dn;
 63 
 64     if (p1 == NULL || p2 == NULL)
 65         return (false);
 66 
 67     if (vec3_dot(p1->n, p2->n) < dotthres)
 68         return (false);
 69 
 70     dn = vec3_dot(p1->n, vec3_diff(p1->p, p2->p));
 71     if (fabs(dn) > poserror)
 72         return (false);
 73 
 74     return (true);
 75 }
 76 

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