--- /dev/null
+#include <stdio.h>
+#include "bddc.h"
+#include "defs.h"
+#include "train.h"
+#include "reorder.h"
+
+#define NODEBLUSH 2
+#define DEFAULTRADIX 20
+#define SPOTRADIX 3
+#define CHECKCOUNT 20
+
+extern train BDDIOpacks;
+extern int BDDIOfunctionlevel;
+extern int BDDIOwidth, BDDIOheight;
+
+static unsigned int radix = DEFAULTRADIX;
+
+static int top, toe;
+static int fore, back;
+
+
+void SetRadix( r )
+ int r;
+{
+ if( r > DEFAULTRADIX ){
+ radix = DEFAULTRADIX;
+ }
+ else{
+ radix = r;
+ }
+}
+
+
+int GetRadix(){
+ return( radix );
+}
+
+
+void PutNode( level, number )
+ short level;
+ int number;
+{
+ int x, y;
+
+ Center( level, number, &x, &y );
+ if( level == BDDIOfunctionlevel ){
+ Circle( x, y, radix, fore, NODEBLUSH );
+ DrawBoldInt( number + 1, x, y );
+ }
+ else if( level > 0 ){
+ Circle( x, y, radix, fore, NODEBLUSH );
+ if( radix > MeanFontWidth() ){
+ DrawInt( level, x, y );
+ }
+ }
+ else{
+ Square( x, y, radix, fore, NODEBLUSH );
+ DrawInt( NameOfLeaf( *(bddp*)TrainIndex( (train*)TrainIndex( &BDDIOpacks,
+ level ),
+ number) ),
+ x, y );
+ }
+}
+
+
+void LeftEdge( flevel, fnumber, tlevel, tnumber )
+ short flevel, tlevel;
+ int fnumber, tnumber;
+{
+ int x0, y0, xf, yf, xp, yp, xt, yt;
+
+ if( flevel > 0 ){
+ Center( flevel, fnumber, &x0, &y0 );
+ LeftLeg( flevel, fnumber, &xf, &yf );
+ LeftFoot( flevel, fnumber, &xp, &yp );
+ Head( tlevel, tnumber, &xt, &yt );
+ if( xf > xt ){
+ RightShoulder( tlevel, tnumber, &xt, &yt );
+ }
+ else if( xf < xt ){
+ LeftShoulder( tlevel, tnumber, &xt, &yt );
+ }
+ Curve( x0, y0, xf, yf, xp, yp, xt, yt, ( flevel - tlevel != 1 ) );
+ }
+}
+
+
+void RightEdge( flevel, fnumber, tlevel, tnumber )
+ short flevel, tlevel;
+ int fnumber, tnumber;
+{
+ int x0, y0, xf, yf, xp, yp, xt, yt;
+
+ if( flevel > 0 ){
+ Center( flevel, fnumber, &x0, &y0 );
+ RightLeg( flevel, fnumber, &xf, &yf );
+ RightFoot( flevel, fnumber, &xp, &yp );
+ Head( tlevel, tnumber, &xt, &yt );
+ if( xf > xt ){
+ RightShoulder( tlevel, tnumber, &xt, &yt );
+ }
+ else if( xf < xt ){
+ LeftShoulder( tlevel, tnumber, &xt, &yt );
+ }
+ Curve( x0, y0, xf, yf, xp, yp, xt, yt, ( flevel - tlevel != 1 ) );
+ }
+}
+
+
+void TailEdge( flevel, fnumber, tlevel, tnumber )
+ short flevel, tlevel;
+ int fnumber, tnumber;
+{
+ int x1, x2, y1, y2;
+
+ if( flevel > 0 ){
+ Hip( flevel, fnumber, &x1, &y1 );
+ Head( tlevel, tnumber, &x2, &y2 );
+ if( x1 > x2 ){
+ RightShoulder( tlevel, tnumber, &x2, &y2 );
+ }
+ else if( x1 < x2 ){
+ LeftShoulder( tlevel, tnumber, &x2, &y2 );
+ }
+ Line( x1, y1, x2, y2 );
+ }
+}
+
+
+static void NegativPochi( level, number )
+ short level;
+ int number;
+{
+ int x, y;
+
+ if( level != BDDIOfunctionlevel ){
+ RightLeg( level, number, &x, &y );
+ }
+ else{
+ Hip( level, number, &x, &y );
+ }
+/* Circle( x, y, SPOTRADIX / 2, back, SPOTRADIX / 2 + 2 );*/
+ Circle( x, y, SPOTRADIX, fore, NODEBLUSH );
+}
+
+
+static void LeftNegativPochi( level, number )
+ short level;
+ int number;
+{
+ int x, y;
+
+ if( level != BDDIOfunctionlevel ){
+ LeftLeg( level, number, &x, &y );
+ }
+ else{
+ Hip( level, number, &x, &y );
+ }
+/* Circle( x, y, SPOTRADIX / 2, back, SPOTRADIX / 2 + 2 );*/
+ Circle( x, y, SPOTRADIX, fore, NODEBLUSH );
+}
+
+
+void ExPochi( level, number )
+ short level;
+ int number;
+{
+ int x, y;
+
+ if( level != BDDIOfunctionlevel ){
+ RightLeg( level, number, &x, &y );
+ }
+ else{
+ Hip( level, number, &x, &y );
+ }
+ Cross( x, y, SPOTRADIX * 2, NODEBLUSH );
+}
+
+void LeftExPochi( level, number )
+ short level;
+ int number;
+{
+ int x, y;
+
+ if( level != BDDIOfunctionlevel ){
+ LeftLeg( level, number, &x, &y );
+ }
+ else{
+ Hip( level, number, &x, &y );
+ }
+ Cross( x, y, SPOTRADIX * 2, NODEBLUSH );
+}
+
+
+static int HaveTheAttribute( atr, name )
+ int atr, name;
+{
+ return( ( atr & name ) != 0 );
+}
+
+
+static void DrawNodes(){
+ int i, j;
+ int cnt;
+ train *p;
+ pack *pk;
+
+ cnt = 0;
+ for( i = toe; i <= top ; i ++ ){
+ p = ( train *)TrainIndex( &BDDIOpacks, i );
+ for( j = 0; j < TrainBound( p ) ; j ++ ){
+ pk = ( pack *)TrainIndex( p, j );
+ if( cnt == 0 ){
+ cnt = CHECKCOUNT;
+ if( Interrupt() ){
+ goto loopabort;
+ }
+ }
+ else{
+ cnt --;
+ }
+ PutNode( i, j );
+ if( i == BDDIOfunctionlevel ){
+ TailEdge( i, j, pk->llevel, pk->lnumber );
+ if( HaveTheAttribute( pk->lattrib, NEGATIV ) ) NegativPochi( i, j );
+ if( HaveTheAttribute( pk->lattrib, EXCHANGE ) ) ExPochi( i, j );
+ }
+ else if( i > 0 ){
+ if( ( AttributeOfEdge(pk->node) & EXCHANGE ) != 0 ){
+ RightEdge( i, j, pk->llevel, pk->lnumber );
+ if( HaveTheAttribute( pk->lattrib, NEGATIV ) ) NegativPochi( i, j );
+ if( HaveTheAttribute( pk->lattrib, EXCHANGE ) ) ExPochi( i, j );
+ LeftEdge( i, j, pk->rlevel, pk->rnumber );
+ if( HaveTheAttribute( pk->rattrib, NEGATIV ) ) LeftNegativPochi( i, j );
+ if( HaveTheAttribute( pk->rattrib, EXCHANGE ) ) LeftExPochi( i, j );
+ }
+ else{
+ LeftEdge( i, j, pk->llevel, pk->lnumber );
+ if( HaveTheAttribute( pk->lattrib, NEGATIV ) ) LeftNegativPochi( i, j );
+ if( HaveTheAttribute( pk->lattrib, EXCHANGE ) ) LeftExPochi( i, j );
+ RightEdge( i, j, pk->rlevel, pk->rnumber );
+ if( HaveTheAttribute( pk->rattrib, NEGATIV ) ) NegativPochi( i, j );
+ if( HaveTheAttribute( pk->rattrib, EXCHANGE ) ) ExPochi( i, j );
+ }
+ }
+ }
+ }
+ loopabort:;
+}
+
+
+void Show(){
+ ResetWindowSize();
+ DrawNodes();
+}
+
+
+void Draw( server, fontname )
+ char *server;
+ char *fontname;
+{
+ top = TrainBound( &BDDIOpacks ) - 1;
+ toe = 0;
+ LocationSetMaximumSize( TableMaximumBound(), top );
+ if( WindowOpen( server, fontname ) != FALSE ){
+ QueryColor( &fore, &back );
+ Wait();
+ WindowClose();
+ }
+}
+
+
+void BDDgraph0( server, fontname, number, bddps )
+ char *server, *fontname;
+ int number;
+ bddp bddps[];
+{
+ edgemode = 0;
+ ClearTable();
+ TraverseFunctions( number, bddps );
+ Draw( server, fontname );
+ FreeTable();
+}
+
+void BDDgraph1( server, fontname, number, bddps )
+ char *server, *fontname;
+ int number;
+ bddp bddps[];
+{
+ edgemode = 1;
+ ClearTable();
+ TraverseFunctions( number, bddps );
+ Draw( server, fontname );
+ FreeTable();
+}
+
+void BDDgraph2( server, fontname, number, bddps )
+ char *server, *fontname;
+ int number;
+ bddp bddps[];
+{
+ edgemode = 2;
+ ClearTable();
+ TraverseFunctions( number, bddps );
+ Draw( server, fontname );
+ FreeTable();
+}
+
+void SetWindowSize( x, y )
+ int x, y;
+{
+ BDDIOwidth = x;
+ BDDIOheight = y;
+}
+
+void bddgraph0(f)
+bddp f;
+{
+ if(f != bddnull) BDDgraph0(0, 0, 1, &f);
+}
+
+
+void bddvgraph0(ptr, lim)
+bddp *ptr;
+int lim;
+{
+ int n;
+
+ n = 0;
+ while(n < lim)
+ {
+ if(ptr[n] == bddnull) break;
+ n++;
+ }
+ BDDgraph0(0, 0, n, ptr);
+}
+
+void bddgraph(f)
+bddp f;
+{
+ if(f != bddnull) BDDgraph1(0, 0, 1, &f);
+}
+
+
+void bddvgraph(ptr, lim)
+bddp *ptr;
+int lim;
+{
+ int n;
+
+ n = 0;
+ while(n < lim)
+ {
+ if(ptr[n] == bddnull) break;
+ n++;
+ }
+ BDDgraph1(0, 0, n, ptr);
+}
+
+
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