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Rev Author Line No. Line
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!if $wims_read_parm!=slib_header
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  !goto proc
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!endif
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slib_author=Bernadette, Perrin-Riou
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slib_example=5,2,[a,b,c,d],blue,red\
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5,2,[a,b,c,d],blue,red,html
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slib_require=pari
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!exit
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:proc
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!distribute item $wims_read_parm into slib_n,slib_s,slib_text,slib_color1,slib_color2,\
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  slib_option, slib_segment slib_dess
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!default slib_s=2
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slib_color1=!declosing $slib_color1
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slib_color2=!declosing $slib_color2
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!default slib_color1=blue
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!default slib_color2=green
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!!default slib_text=!values x for x=1 to $slib_n
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slib_text=!declosing $slib_text
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!if [ isin $slib_s
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  slib_G=!declosing $slib_s
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!else
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  slib_liste=
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  !for slib_i=1 to $slib_n
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    slib_liste1=!values 1 for x=1 to $slib_s
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    slib_liste0=!values 0 for x=1 to $[$slib_n-$slib_i-$slib_s]
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    slib_liste2=!shuffle $slib_liste1,$slib_liste0
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    slib_liste2=1,$slib_liste2
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    slib_liste2=!item 1 to $[$slib_n-$slib_i+1] of $slib_liste2
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    slib_liste=!append item $slib_liste2 to $slib_liste
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  !next slib_i
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  slib_liste=!nonempty items $slib_liste
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  slib_G=!exec pari slib_n=$slib_n;slib_liste=[$slib_liste];slib_M=matrix(slib_n,slib_n,slib_i,slib_j, if(slib_i < slib_j,slib_liste[slib_n*(slib_n-1)/2-(slib_n-slib_i+1)*(slib_n-slib_i)/2 +slib_j-slib_i]));for(slib_i=2,slib_n-1,if(slib_M[,slib_i]==0,slib_M[1,slib_i]=1);if(slib_M[slib_i,]==0,slib_M[slib_i,slib_n]=1));slib_M[1,slib_n]=0; slib_M
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!endif
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slib_GG=!translate internal ; to $\
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$ in $slib_G
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##########################
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slib_niveau=!exec pari slib_n=$slib_n;slib_M=Mat([$slib_G]);slib_niveau=matrix(slib_n,slib_n);slib_niveau[1,1]=1;slib_degp=vector(slib_n,i,sum(x=1,slib_n,slib_M[x,i]));for(slib_k=1,slib_n-1,for(slib_i=1,slib_n,if(slib_niveau[slib_k,slib_i]!=0,for(slib_j=1,slib_n,if(slib_M[slib_i,slib_j]!=0,slib_degp[slib_j]-=1;if(slib_degp[slib_j]==0,slib_niveau[slib_k+1,slib_j]=1));););););slib_niveau
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slib_height=!exec pari slib_n=$slib_n;slib_niveau=Mat([$slib_niveau]);slib_k=slib_n;for(slib_i=1,slib_n,if(slib_niveau[slib_i,]==0,slib_k=slib_i-1;break));print(slib_k);
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slib_width=!exec pari slib_niveau=Mat([$slib_niveau]); vecmax(vector($slib_height,i, sum(j=1,$slib_n, slib_niveau[i,j])))
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#hauteur des paraboles sur lesquelles sont mis les points
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slib_listeb=!values ($slib_width/2+1-x)*0.98111111/$slib_width for x=1 to $[ceil($slib_width/2)]
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slib_listeb=!makelist x,-x for x in $slib_listeb
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slib_niveau=!exec pari slib_niveau=Mat([$slib_niveau]); matrix($slib_height,$slib_n,i,j,slib_niveau[i,j])
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slib_position=!exec pari matrix($slib_n,2)
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slib_position=!translate internal ; to $\
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$ in $slib_position
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slib_niveau1=!translate internal ; to $\
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$ in $slib_niveau
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slib_sign=1
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!for slib_i=1 to $slib_height
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  slib_eps1=!item $slib_i of $slib_eps
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  slib_ligne=!line $slib_i of $slib_niveau1
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  slib_test=0
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  slib_total=!replace internal , by + in $slib_ligne
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  slib_total=$[$slib_total]
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    !if $slib_total=1
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      slib_sign=$[-$slib_sign]
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    !endif
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  slib_dist=$[round($slib_width/$slib_total)]
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  !for slib_j=1 to $slib_n
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    slib_pt=!item $slib_j of $slib_ligne
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    !if $slib_pt <>0
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      !advance slib_test
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      slib_bb=!item $[($slib_test)*$slib_dist] of $slib_listeb
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      slib_position=!replace internal line number $slib_j by $[$slib_i-1], $[$slib_sign*$slib_bb*$slib_i*($slib_height -$slib_i)] in $slib_position
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    !endif
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  !next slib_j
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!next slib_i
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#dessin
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####################
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slib_yrange1=$[-$slib_height^2/8-0.5]
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slib_yrange2=$[$slib_height^2/8+0.5]
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####################
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!for slib_i=0 to $[floor($slib_height/2+2)]
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  slib_dess=!append line pointfill 2*$slib_i,0,3,3,yellow to $slib_dess
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!next slib_i
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# laisser en premier les lignes correspondant aux sommets
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!for slib_i=1 to $slib_n
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  slib_point=!line $slib_i of $slib_position
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  slib_dess=!append line disk $slib_point, 6, $slib_color2 to $slib_dess
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  !for slib_j=$slib_i to $slib_n
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    slib_ligne=!line $slib_i of $slib_GG
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    slib_test=!item $slib_j of $slib_ligne
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    !if $slib_test <> 0
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      slib_point1=!line $slib_j of $slib_position
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      slib_interm=!exec pari ([$slib_point]+2*[$slib_point1])/3
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      slib_segment=!append item $slib_point, $slib_point1 to $slib_segment
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      slib_dess=!append line arrow $slib_point, $slib_interm, 10, $slib_color1 to $slib_dess
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    !endif
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  !next slib_j
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  !if $slib_text<>$empty
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    slib_texti=!item $slib_i of $slib_text
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    slib_dess=!append line text black,$slib_point, medium, $slib_texti to $slib_dess
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  !endif
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!next slib_i
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slib_dessin=xrange -0.5, $[$slib_height]\
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yrange $slib_yrange1, $slib_yrange2\
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parallel -0.5,$slib_yrange1,-0.5,$slib_yrange2,1,0, $[$slib_height+2],yellow\
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segments $slib_color1, $slib_segment\
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$slib_dess
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slib_out=$slib_dessin
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!if url iswordof $slib_option or html iswordof $slib_option
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  insdraw_size=450,250
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  !insdraw $slib_out
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  slib_out=$ins_url
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  !if html iswordof $slib_option
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    slib_out=<img src="$ins_url" alt="">
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  !else
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    slib_out=$slib_out,[$slib_G],[$slib_niveau], [$slib_position],$insdraw_size
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  !endif
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!else
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  slib_out=$slib_dessin,[$slib_G],[$slib_niveau], [$slib_position]
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!endif