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/*****************************************************************
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m2d_c_quad.c Type:Func
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Creation d un arbre sur l espace parametrique
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Date de creation : Wed Feb 5 17:23:19 1997
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Derniere version : Mon May 12 19:09:35 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 <stdlib.h>
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#include "const.h"
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#include "memoire.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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/**************************/
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/* programme principal */
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void m2d_c_quad(struct s_face *face,float rev_u,float rev_v)
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{
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struct s_noeud *no;
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struct s_quadtree *quad;
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float umax,umin,vmax,vmin,diff;
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int i,pass,num;
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/* recherche min-max en u et v */
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pass=0;
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for (i=0;i<mesh->nb_noeud;i++)
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{
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no=ADRESSE(i,noeud,mesh->);
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if (no->indice==face->num)
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{
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if (pass==0)
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{
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pass=1;
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umax=no->u;
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umin=no->u;
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vmax=no->v;
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vmin=no->v;
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}
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if (no->u>umax) umax=no->u;
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if (no->u<umin) umin=no->u;
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if (no->v>vmax) vmax=no->v;
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if (no->v<vmin) vmin=no->v;
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}
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}
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if (rev_u!=0.0)
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{
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umin=0.;
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umax=rev_u;
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}
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else
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{
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diff=umax-umin;
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umin=umin-5.*diff;
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umax=umax+5.*diff;
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}
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if (rev_v!=0.0)
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{
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vmin=0.;
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vmax=rev_v;
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}
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else
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{
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diff=vmax-vmin;
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vmin=vmin-5.*diff;
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vmax=vmax+5.*diff;
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}
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mesh->rev_u=rev_u;
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mesh->rev_v=rev_v;
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/* creation de la racine */
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NEW_ENTITE(mesh->root,quadtree,mesh->);
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mesh->root->num=mesh->nb_quadtree-1;
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mesh->root->u=umin;
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mesh->root->v=vmin;
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mesh->root->t_u=umax-umin;
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mesh->root->t_v=vmax-vmin;
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for (i=0;i<mesh->nb_noeud;i++)
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{
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no=ADRESSE(i,noeud,mesh->);
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if (no->indice==face->num)
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{
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NEW_POINTEUR(num,noeud,mesh->root->);
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mesh->root->noeud[num]=no;
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}
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}
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/* creation de l arbre */
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quad=mesh->root;
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quad->fils[0]=qu_ins(quad->u,quad->v,quad->t_u/2.,quad->t_v/2.,quad->noeud,quad->nb_noeud);
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quad->fils[1]=qu_ins(quad->u+quad->t_u/2.,quad->v,quad->t_u/2.,quad->t_v/2.,quad->noeud,quad->nb_noeud);
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quad->fils[2]=qu_ins(quad->u,quad->v+quad->t_v/2.,quad->t_u/2.,quad->t_v/2.,quad->noeud,quad->nb_noeud);
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quad->fils[3]=qu_ins(quad->u+quad->t_u/2.,quad->v+quad->t_v/2.,quad->t_u/2.,quad->t_v/2.,quad->noeud,quad->nb_noeud);
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}
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