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/*****************************************************************
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eval_normal.c Type:Func
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Calcul en x y z de la normale a une surface
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Date de creation : Mon Apr 21 10:38:26 1997
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Derniere version : Tue Apr 22 11:41:53 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 "const.h"
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#include "struct.h"
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#include "prototype.h"
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/**************************/
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/* variables globales */
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extern struct environnment env;
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extern struct s_mesh *mesh;
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extern struct s_acis *acis;
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/**************************/
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/* programme principal */
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void eval_normal(struct s_face *face,float *norm, float u,float v)
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{
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struct s_cone *cone;
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struct s_plane *plane;
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cone=NULL;
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plane=NULL;
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if (strcmp(acis->type_entite[face->surface],"cone-surface")==0)
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cone=(struct s_cone *)acis->entity[face->surface];
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if (strcmp(acis->type_entite[face->surface],"plane-surface")==0)
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plane=(struct s_plane *)acis->entity[face->surface];
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if (cone!=NULL) eval_cone(face,cone->param,&u,&v,NORMAL,&norm[0],&norm[1],&norm[2],0.);
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if (plane!=NULL) eval_plane(face,plane->param,&u,&v,NORMAL,&norm[0],&norm[1],&norm[2]);
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}
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