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/*****************************************************************
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m1d_param_straight Type:func
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Parametrage d'une droite
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Date de creation : Thu Nov 28 10:27:03 1996
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Derniere version : Tue Jun 3 11:55:51 1997
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Vincent FRANCOIS
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*****************************************************************/
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/**************************/
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/* include */
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#include <stdio.h>
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#include <string.h>
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#include <math.h>
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#include <stdlib.h>
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#include "const.h"
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#include "struct.h"
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#include "memoire.h"
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#include "prototype.h"
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/**************************/
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/* variables globales */
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extern struct s_acis *acis;
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extern struct s_param *para;
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/**************************/
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/* programme principal */
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void m1d_param_straight(struct s_edge *edge,struct s_straight *straight)
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{
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struct s_point *p1,*p2;
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NEW_ENTITE(straight->param,par_straight,para->);
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memcpy(straight->param->root,straight->root,3*sizeof(float));
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memcpy(straight->param->dir,straight->dir,3*sizeof(float));
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if (edge->sense==0)
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{
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p1=edge->start_vertex->point;
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p2=edge->end_vertex->point;
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}
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else
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{
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p2=edge->start_vertex->point;
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p1=edge->end_vertex->point;
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}
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if (!(EGAL(straight->param->dir[0],0.,0.0001)))
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{
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edge->t1=(p1->coord[0]-straight->param->root[0])/straight->param->dir[0];
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edge->t2=(p2->coord[0]-straight->param->root[0])/straight->param->dir[0];
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}
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else
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if (!(EGAL(straight->param->dir[1],0.,0.0001)))
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{
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edge->t1=(p1->coord[1]-straight->param->root[1])/straight->param->dir[1];
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edge->t2=(p2->coord[1]-straight->param->root[1])/straight->param->dir[1];
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}
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else
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{
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edge->t1=(p1->coord[2]-straight->param->root[2])/straight->param->dir[2];
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edge->t2=(p2->coord[2]-straight->param->root[2])/straight->param->dir[2];
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}
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edge->t2=edge->t2-edge->t1;
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}
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