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add ineqn functions.
objcp,ineqn,ineqnover,ineqnand,ineqnor,ineqnxor,ineqnmain,obj_op
include INTERVAL

/*
 * Copyright (c) 1994-2000 FUJITSU LABORATORIES LIMITED 
 * All rights reserved.
 * 
 * FUJITSU LABORATORIES LIMITED ("FLL") hereby grants you a limited,
 * non-exclusive and royalty-free license to use, copy, modify and
 * redistribute, solely for non-commercial and non-profit purposes, the
 * computer program, "Risa/Asir" ("SOFTWARE"), subject to the terms and
 * conditions of this Agreement. For the avoidance of doubt, you acquire
 * only a limited right to use the SOFTWARE hereunder, and FLL or any
 * third party developer retains all rights, including but not limited to
 * copyrights, in and to the SOFTWARE.
 * 
 * (1) FLL does not grant you a license in any way for commercial
 * purposes. You may use the SOFTWARE only for non-commercial and
 * non-profit purposes only, such as academic, research and internal
 * business use.
 * (2) The SOFTWARE is protected by the Copyright Law of Japan and
 * international copyright treaties. If you make copies of the SOFTWARE,
 * with or without modification, as permitted hereunder, you shall affix
 * to all such copies of the SOFTWARE the above copyright notice.
 * (3) An explicit reference to this SOFTWARE and its copyright owner
 * shall be made on your publication or presentation in any form of the
 * results obtained by use of the SOFTWARE.
 * (4) In the event that you modify the SOFTWARE, you shall notify FLL by
 * e-mail at risa-admin@sec.flab.fujitsu.co.jp of the detailed specification
 * for such modification or the source code of the modified part of the
 * SOFTWARE.
 * 
 * THE SOFTWARE IS PROVIDED AS IS WITHOUT ANY WARRANTY OF ANY KIND. FLL
 * MAKES ABSOLUTELY NO WARRANTIES, EXPRESSED, IMPLIED OR STATUTORY, AND
 * EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF THIRD PARTIES'
 * RIGHTS. NO FLL DEALER, AGENT, EMPLOYEES IS AUTHORIZED TO MAKE ANY
 * MODIFICATIONS, EXTENSIONS, OR ADDITIONS TO THIS WARRANTY.
 * UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY, TORT, CONTRACT,
 * OR OTHERWISE, SHALL FLL BE LIABLE TO YOU OR ANY OTHER PERSON FOR ANY
 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, PUNITIVE OR CONSEQUENTIAL
 * DAMAGES OF ANY CHARACTER, INCLUDING, WITHOUT LIMITATION, DAMAGES
 * ARISING OUT OF OR RELATING TO THE SOFTWARE OR THIS AGREEMENT, DAMAGES
 * FOR LOSS OF GOODWILL, WORK STOPPAGE, OR LOSS OF DATA, OR FOR ANY
 * DAMAGES, EVEN IF FLL SHALL HAVE BEEN INFORMED OF THE POSSIBILITY OF
 * SUCH DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY. EVEN IF A PART
 * OF THE SOFTWARE HAS BEEN DEVELOPED BY A THIRD PARTY, THE THIRD PARTY
 * DEVELOPER SHALL HAVE NO LIABILITY IN CONNECTION WITH THE USE,
 * PERFORMANCE OR NON-PERFORMANCE OF THE SOFTWARE.
 *
 * $OpenXM: OpenXM_contrib2/asir2000/plot/if.c,v 1.22 2011/08/10 04:51:58 saito Exp $ 
*/
#include "ca.h"
#include "parse.h"
#include "ox.h"
#include "ifplot.h"

#if defined(INTERVAL)
/* Time message and func*/
#include <sys/types.h>
#include <sys/resource.h>
#include <sys/time.h>

static struct oEGT ltime;
static double r0;
double get_rtime();
#if defined(ITV_TIME_CHECK)
void tstart()
{
	get_eg(&ltime);
	r0 = get_rtime();
}

void tstop(struct canvas *can)
{
	struct oEGT egt1;
	double e, g, r;
	char ts[100];
	void popdown_warning();
	Widget warnshell,warndialog;

	get_eg(&egt1);
	e = egt1.exectime - ltime.exectime;
	g = egt1.gctime - ltime.gctime;
	r = get_rtime() - r0;
	sprintf(ts,"(%8.6f + gc %8.6f) total %8.6f \n",e,g,r);
	create_popup(can->shell,"Message",&ts,&warnshell,&warndialog);
	XawDialogAddButton(warndialog,"OK",popdown_warning,warnshell);
	XtPopup(warnshell,XtGrabNone);
	SetWM_Proto(warnshell);
}
#else
#define tstart()
#define tstop(a)
#endif
#endif

extern JMP_BUF ox_env;

int open_canvas(NODE arg)
{
	int id;
	struct canvas *can;
	LIST wsize;
	STRING wname;

	wsize = (LIST)ARG0(arg);
	wname = (STRING)ARG1(arg);

	can = canvas[id = search_canvas()];
	can->mode = MODE_INTERACTIVE;
	if ( !wsize ) {
		can->width = DEFAULTWIDTH; can->height = DEFAULTHEIGHT;
	} else {
		can->width = QTOS((Q)BDY(BDY(wsize)));
		can->height = QTOS((Q)BDY(NEXT(BDY(wsize))));
	}
	if ( wname )
		can->wname = BDY(wname);
	else
		can->wname = "";
	create_canvas(can);
	return id;
}

int plot(NODE arg)
{
	int id;
	NODE n;
	struct canvas *can;
	P formula;
	LIST xrange,yrange,zrange,wsize;
	STRING wname;
	V v;

	formula = (P)ARG0(arg);
	xrange = (LIST)ARG1(arg);
	yrange = (LIST)ARG2(arg);
	zrange = (LIST)ARG3(arg);
	wsize = (LIST)ARG4(arg);
	wname = (STRING)ARG5(arg);

	can = canvas[id = search_canvas()];
	if ( xrange ) {
		n = BDY(xrange); can->vx = VR((P)BDY(n)); n = NEXT(n);
		can->qxmin = (Q)BDY(n); n = NEXT(n); can->qxmax = (Q)BDY(n);
		can->xmin = ToReal(can->qxmin); can->xmax = ToReal(can->qxmax); 
	}
	if ( yrange ) {
		n = BDY(yrange); can->vy = VR((P)BDY(n)); n = NEXT(n);
		can->qymin = (Q)BDY(n); n = NEXT(n); can->qymax = (Q)BDY(n);
		can->ymin = ToReal(can->qymin); can->ymax = ToReal(can->qymax); 
	}
	if ( xrange && yrange )
		can->mode = zrange ? MODE_CONPLOT : MODE_IFPLOT;
	else 
		can->mode = xrange ? MODE_PLOT : MODE_POLARPLOT;

	if ( zrange ) {
		n = NEXT(BDY(zrange));
		can->zmin = ToReal(BDY(n)); 
		n = NEXT(n); can->zmax = ToReal(BDY(n));
		n = NEXT(n);
		if ( can->mode == MODE_CONPLOT )
			can->nzstep = n ? QTOS((Q)BDY(n)) : MAXGC;
		else {
			/* XXX */
			can->vx = VR((P)BDY(BDY(zrange)));
			can->nzstep = n ? QTOS((Q)BDY(n)) : DEFAULTPOLARSTEP;
		}
	}

	if ( !wsize ) {
		can->width = DEFAULTWIDTH; can->height = DEFAULTHEIGHT;
	} else {
		can->width = QTOS((Q)BDY(BDY(wsize)));
		can->height = QTOS((Q)BDY(NEXT(BDY(wsize))));
	}
	if ( wname )
		can->wname = BDY(wname);
	else
		can->wname = "";
	can->formula = formula; 
	if ( can->mode == MODE_PLOT ) {
		plotcalc(can);
		create_canvas(can);
		plot_print(display,can);
	} else if ( can->mode == MODE_POLARPLOT ) {
		polarplotcalc(can);
		create_canvas(can);
		plot_print(display,can);
	} else {
		create_canvas(can);
		ifplotmain(can);
	}
	copy_to_canvas(can);
	return id;
}

int memory_plot(NODE arg,LIST *bytes)
{
	NODE n;
	struct canvas tmp_can;
	struct canvas *can;
	P formula;
	LIST xrange,yrange,zrange,wsize;
	int width,height;
	double **tabe;
	int i;
	BYTEARRAY barray;
	Q qw,qh;

	formula = (P)ARG0(arg);
	xrange = (LIST)ARG1(arg);
	yrange = (LIST)ARG2(arg);
	zrange = (LIST)ARG3(arg);
	wsize = (LIST)ARG4(arg);

	bzero((char *)&tmp_can,sizeof(tmp_can));
	can = &tmp_can;
	n = BDY(xrange); can->vx = VR((P)BDY(n)); n = NEXT(n);
	can->qxmin = (Q)BDY(n); n = NEXT(n); can->qxmax = (Q)BDY(n);
	can->xmin = ToReal(can->qxmin); can->xmax = ToReal(can->qxmax); 
	if ( yrange ) {
		n = BDY(yrange); can->vy = VR((P)BDY(n)); n = NEXT(n);
		can->qymin = (Q)BDY(n); n = NEXT(n); can->qymax = (Q)BDY(n);
		can->ymin = ToReal(can->qymin); can->ymax = ToReal(can->qymax); 
		if ( zrange ) {
			n = NEXT(BDY(zrange));
			can->zmin = ToReal(BDY(n)); n = NEXT(n); can->zmax = ToReal(BDY(n));
			if ( n = NEXT(n) )
				can->nzstep = QTOS((Q)BDY(n));
			else
				can->nzstep = MAXGC;
			can->mode = MODE_CONPLOT;
		} else
			can->mode = MODE_IFPLOT;
	} else
		can->mode = MODE_PLOT;
	if ( !wsize ) {
		can->width = DEFAULTWIDTH; can->height = DEFAULTHEIGHT;
	} else {
		can->width = QTOS((Q)BDY(BDY(wsize)));
		can->height = QTOS((Q)BDY(NEXT(BDY(wsize))));
	}
	can->wname = "";
	can->formula = formula; 
	if ( can->mode == MODE_PLOT ) {
		plotcalc(can);
		memory_print(can,&barray);
		STOQ(can->width,qw); STOQ(can->height,qh);
		n = mknode(3,qw,qh,barray);
		MKLIST(*bytes,n);
	} else {
		width = can->width; height = can->height;
		tabe = (double **)ALLOCA(width*sizeof(double *));
		for ( i = 0; i < width; i++ )
			tabe[i] = (double *)ALLOCA(height*sizeof(double));
		calc(tabe,can,1);
		memory_if_print(tabe,can,&barray);
		STOQ(width,qw); STOQ(height,qh);
		n = mknode(3,qw,qh,barray);
		MKLIST(*bytes,n);
	}
}

int plotover(NODE arg)
{
	int index, color;
	P formula;
	struct canvas *can;
	VL vl,vl0;

	index = QTOS((Q)ARG0(arg));
	formula = (P)ARG1(arg);
	can = canvas[index];
	color = can->color;
	if ( !can->window )
		return -1;
	get_vars_recursive((Obj)formula,&vl);
	for ( vl0 = vl; vl0; vl0 = NEXT(vl0) )
		if ( vl0->v->attr == (pointer)V_IND )
			if ( vl->v != can->vx && vl->v != can->vy )
				return -1;
	if ( argc(arg) == 3 )
		can->color = QTOS((Q)ARG2(arg));
	else
		can->color = 0;
#if !defined(VISUAL)
	set_drawcolor(can->color);
#endif
	current_can = can;
	can->formula = formula;
	if ( can->mode == MODE_PLOT ) {
		plotcalc(can);
		plot_print(display,can);
	} else
		ifplotmain(can);
	copy_to_canvas(can);
	can->color = color;
#if !defined(VISUAL)
	set_drawcolor(can->color);
#endif
	return index;
}

int drawcircle(NODE arg)
{
#if !defined(VISUAL)
	int id;
	int index;
	pointer ptr;
	Q ret;
	LIST xyr;
	Obj x,y,r;
	int wx,wy,wr,c;
	struct canvas *can;

	index = QTOS((Q)ARG0(arg));
	xyr = (LIST)ARG1(arg); 
	x = (Obj)ARG0(BDY(xyr)); y = (Obj)ARG1(BDY(xyr)); r = (Obj)ARG2(BDY(xyr));
	c = QTOS((Q)ARG2(arg));
	can = canvas[index];
	if ( !can->window )
		return -1;
	else {
		current_can = can;
		set_drawcolor(c);
		wx = (ToReal(x)-can->xmin)*can->width/(can->xmax-can->xmin);
		wy = (can->ymax-ToReal(y))*can->height/(can->ymax-can->ymin);
		wr = ToReal(r);
		XFillArc(display,can->pix,cdrawGC,wx-wr/2,wy-wr/2,wr,wr,0,360*64);
		copy_to_canvas(can);
		set_drawcolor(can->color);
		return index;
	}
#endif
}

int draw_obj(NODE arg)
{
	int index;
	int x,y,u,v,len,r;
	NODE obj,n;
	RealVect *vect;
	struct canvas *can;
	int color;

	index = QTOS((Q)ARG0(arg));
	can = canvas[index];
	if ( !can && closed_canvas[index] ) {
		canvas[index] = closed_canvas[index];
		closed_canvas[index] = 0;
		can = canvas[index];
		popup_canvas(index);
		current_can = can;
	} else if ( !can || (can && !can->window) ) {
		set_lasterror("draw_obj : canvas does not exist");
		return -1;
	}

	obj = BDY((LIST)ARG1(arg));
	if ( argc(arg) == 3 )
		color = QTOS((Q)ARG2(arg));
	else
		color = 0; /* black */
	switch ( len = length(obj) ) {
		case 2: /* point */
			x = (int)ToReal((Q)ARG0(obj)); y = (int)ToReal((Q)ARG1(obj));
			draw_point(display,can,x,y,color);
			MKRVECT3(vect,x,y,color); MKNODE(n,vect,can->history);
			can->history = n;
			break;
		case 3: /* circle */
			x = (int)ToReal((Q)ARG0(obj)); y = (int)ToReal((Q)ARG1(obj));
			r = (int)ToReal((Q)ARG2(obj));
			MKRVECT4(vect,x,y,r,color); MKNODE(n,vect,can->history);
			can->history = n;
			break;
		case 4: /* line */
			x = (int)ToReal((Q)ARG0(obj)); y = (int)ToReal((Q)ARG1(obj));
			u = (int)ToReal((Q)ARG2(obj)); v = (int)ToReal((Q)ARG3(obj));
			draw_line(display,can,x,y,u,v,color);
			MKRVECT5(vect,x,y,u,v,color); MKNODE(n,vect,can->history);
			can->history = n;
			break;
		default:
			set_lasterror("draw_obj : invalid request");
			return -1;
	}
#if !defined(VISUAL)
	set_drawcolor(can->color);
#endif
	return 0;
}

int draw_string(NODE arg)
{
	int index,x,y;
	char *str;
	NODE pos;
	struct canvas *can;
	int color;

	index = QTOS((Q)ARG0(arg));
	can = canvas[index];
	if ( !can && closed_canvas[index] ) {
		canvas[index] = closed_canvas[index];
		closed_canvas[index] = 0;
		can = canvas[index];
		popup_canvas(index);
		current_can = can;
	} else if ( !can || (can && !can->window) ) {
		set_lasterror("draw_obj : canvas does not exist");
		return -1;
	}

	pos = BDY((LIST)ARG1(arg));
	str = BDY((STRING)ARG2(arg));
	if ( argc(arg) == 4 )
		color = QTOS((Q)ARG3(arg));
	else
		color = 0; /* black */
	x = (int)ToReal((Q)ARG0(pos));
	y = (int)ToReal((Q)ARG1(pos));
	draw_character_string(display,can,x,y,str,color);
#if !defined(VISUAL)
	set_drawcolor(can->color);
#endif
	return 0;
}

int clear_canvas(NODE arg)
{
	int index;
	struct canvas *can;

	index = QTOS((Q)ARG0(arg));
	can = canvas[index];
	if ( !can || !can->window )
		return -1;
	clear_pixmap(can);
	copy_to_canvas(can);
	/* clear the history */
	can->history = 0;
}

#define RealtoDbl(r) ((r)?BDY(r):0.0)

int arrayplot(NODE arg)
{
	int id,ix,w,h;
	VECT array;
	LIST xrange,wsize;
	char *wname;
	NODE n;
	double ymax,ymin,dy,xstep;
	Real *tab;
	struct canvas *can;
	POINT *pa;

	array = (VECT)ARG0(arg);
	xrange = (LIST)ARG1(arg);
	can = canvas[id = search_canvas()];
	n = BDY(xrange); can->vx = VR((P)BDY(n)); n = NEXT(n);
	can->qxmin = (Q)BDY(n); n = NEXT(n); can->qxmax = (Q)BDY(n);
	can->xmin = ToReal(can->qxmin); can->xmax = ToReal(can->qxmax); 
	if ( !wsize ) {
		can->width = DEFAULTWIDTH; can->height = DEFAULTHEIGHT;
	} else {
		can->width = QTOS((Q)BDY(BDY(wsize)));
		can->height = QTOS((Q)BDY(NEXT(BDY(wsize))));
	}
	can->wname = wname; can->formula = 0; can->mode = MODE_PLOT;
	create_canvas(can);
	w = array->len;
	h = can->height;
	tab = (Real *)BDY(array);
	if ( can->ymax == can->ymin ) {
		for ( ymax = ymin = RealtoDbl(tab[0]), ix = 1; ix < w; ix++ ) {
			if ( RealtoDbl(tab[ix]) > ymax )
				ymax = RealtoDbl(tab[ix]);
			if ( RealtoDbl(tab[ix]) < ymin )
				ymin = RealtoDbl(tab[ix]);
		}
		can->ymax = ymax; can->ymin = ymin;
	} else {
		ymax = can->ymax; ymin = can->ymin;
	}
	dy = ymax-ymin;
	can->pa = (struct pa *)MALLOC(sizeof(struct pa));
	can->pa[0].length = w;
	can->pa[0].pos = pa = (POINT *)MALLOC(w*sizeof(POINT));
	xstep = (double)can->width/(double)(w-1);
	for ( ix = 0; ix < w; ix++ ) {
#ifndef MAXSHORT
#define MAXSHORT ((short)0x7fff)
#endif
		double t;

		pa[ix].x = (int)(ix*xstep); 
		t = (h - 1)*(ymax - RealtoDbl(tab[ix]))/dy;
		if ( t > MAXSHORT )
			pa[ix].y = MAXSHORT;
		else if ( t < -MAXSHORT )
			pa[ix].y = -MAXSHORT;
		else
			pa[ix].y = (long)t;
	}
	plot_print(display,can);
	copy_to_canvas(can);
	return id;
}

void ifplot_resize(struct canvas *can,POINT spos,POINT epos)
{
	struct canvas *ncan;
	struct canvas fakecan;
	Q dx,dy,dx2,dy2,xmin,xmax,ymin,ymax,xmid,ymid;
	Q sx,sy,ex,ey,cw,ch,ten,two;
	Q s,t;
	int new;
	int w,h,m;

	if ( XC(spos) < XC(epos) && YC(spos) < YC(epos) ) {
		if ( can->precise && !can->wide ) {
			fakecan = *can; ncan = &fakecan;
		} else {
			new = search_canvas(); ncan = canvas[new];
		}
		ncan->mode = can->mode;
		ncan->zmin = can->zmin; ncan->zmax = can->zmax;
		ncan->nzstep = can->nzstep;
		ncan->wname = can->wname;
		ncan->vx = can->vx; ncan->vy = can->vy;
		ncan->formula = can->formula;
		w = XC(epos)-XC(spos);
		h = YC(epos)-YC(spos);
		m = MAX(can->width,can->height);
		if ( can->precise ) {
			ncan->width = w; ncan->height = h;
		} else if ( w > h ) {
			ncan->width = m; ncan->height = m * h/w;
		} else {
			ncan->width = m * w/h; ncan->height = m;
		}
		if ( can->wide ) {
			STOQ(10,ten); STOQ(2,two);
			subq(can->qxmax,can->qxmin,&t); mulq(t,ten,&dx);
			subq(can->qymax,can->qymin,&t); mulq(t,ten,&dy);
			addq(can->qxmax,can->qxmin,&t); divq(t,two,&xmid);
			addq(can->qymax,can->qymin,&t); divq(t,two,&ymid);
			divq(dx,two,&dx2); divq(dy,two,&dy2);
			subq(xmid,dx2,&xmin); addq(xmid,dx2,&xmax);
			subq(ymid,dy2,&ymin); addq(ymid,dy2,&ymax);
		} else {
			subq(can->qxmax,can->qxmin,&dx); subq(can->qymax,can->qymin,&dy);
			xmin = can->qxmin; xmax = can->qxmax; 
			ymin = can->qymin; ymax = can->qymax;
		}
		STOQ(XC(spos),sx); STOQ(YC(spos),sy); STOQ(XC(epos),ex); STOQ(YC(epos),ey);
		STOQ(can->width,cw); STOQ(can->height,ch);
		mulq(sx,dx,&t); divq(t,cw,&s); addq(xmin,s,&ncan->qxmin);
		mulq(ex,dx,&t); divq(t,cw,&s); addq(xmin,s,&ncan->qxmax);
		mulq(ey,dy,&t); divq(t,ch,&s); subq(ymax,s,&ncan->qymin);
		mulq(sy,dy,&t); divq(t,ch,&s); subq(ymax,s,&ncan->qymax);
		ncan->xmin = ToReal(ncan->qxmin); ncan->xmax = ToReal(ncan->qxmax);
		ncan->ymin = ToReal(ncan->qymin); ncan->ymax = ToReal(ncan->qymax);
		if ( can->precise && !can->wide ) {
			current_can = can;
			alloc_pixmap(ncan);
#if defined(VISUAL)
			ncan->real_can = can;
#endif
			qifplotmain(ncan);
			copy_subimage(ncan,can,spos);
			copy_to_canvas(can);
		} else {
			create_canvas(ncan);
			if ( can->precise )
				qifplotmain(ncan);
			else
				ifplotmain(ncan);
			copy_to_canvas(ncan);
		}
	}
}

void plot_resize(struct canvas *can,POINT spos,POINT epos)
{
	struct canvas *ncan;
	Q dx,dx2,xmin,xmax,xmid;
	double dy,ymin,ymax,ymid;
	Q sx,ex,cw,ten,two;
	Q s,t;
	int new;
	int w,h,m;

	if ( XC(spos) < XC(epos) && YC(spos) < YC(epos) ) {
		new = search_canvas(); ncan = canvas[new];
		ncan->mode = can->mode;
		ncan->zmin = can->zmin; ncan->zmax = can->zmax;
		ncan->nzstep = can->nzstep;
		ncan->wname = can->wname;
		ncan->vx = can->vx; ncan->vy = can->vy;
		ncan->formula = can->formula;
		w = XC(epos)-XC(spos);
		h = YC(epos)-YC(spos);
		m = MAX(can->width,can->height);
		if ( w > h ) {
			ncan->width = m; ncan->height = m * h/w;
		} else {
			ncan->width = m * w/h; ncan->height = m;
		}
		if ( can->wide ) {
			STOQ(10,ten); STOQ(2,two);
			subq(can->qxmax,can->qxmin,&t); mulq(t,ten,&dx);
			addq(can->qxmax,can->qxmin,&t); divq(t,two,&xmid);
			divq(dx,two,&dx2); subq(xmid,dx2,&xmin); addq(xmid,dx2,&xmax);

			dy = (can->ymax-can->ymin)*10;
			ymid = (can->ymax+can->ymin)/2;
			ymin = ymid-dy/2; ymax = ymid+dy/2;
		} else {
			subq(can->qxmax,can->qxmin,&dx); 
			xmin = can->qxmin; xmax = can->qxmax; 

			dy = can->ymax-can->ymin;
			ymin = can->ymin; ymax = can->ymax;
		}
		STOQ(XC(spos),sx); STOQ(XC(epos),ex); STOQ(can->width,cw); 
		mulq(sx,dx,&t); divq(t,cw,&s); addq(xmin,s,&ncan->qxmin);
		mulq(ex,dx,&t); divq(t,cw,&s); addq(xmin,s,&ncan->qxmax);
		ncan->xmin = ToReal(ncan->qxmin); ncan->xmax = ToReal(ncan->qxmax);

		ncan->ymin = ymax-YC(epos)*dy/can->height;
		ncan->ymax = ymax-YC(spos)*dy/can->height;

		create_canvas(ncan); 
		plotcalc(ncan);
		plot_print(display,ncan);
		copy_to_canvas(ncan);
	}
}

void ifplotmain(struct canvas *can)
{
	int width,height;
	double **tabe;
	int i;

#if defined(INTERVAL)
	tstart();
#endif
	width = can->width; height = can->height;
	tabe = (double **)ALLOCA((width+1)*sizeof(double *));
	for ( i = 0; i < width; i++ )
		tabe[i] = (double *)ALLOCA((height+1)*sizeof(double));
	define_cursor(can->window,runningcur);
	set_busy(can); set_selection();
	calc(tabe,can,0); if_print(display,tabe,can);
	reset_selection(); reset_busy(can);
	define_cursor(can->window,normalcur);
#if defined(INTERVAL)
	tstop(can);
#endif
}

void qifplotmain(struct canvas *can)
{
	int width,height;
	char **tabe,*tabeb;
	int i;

	width = can->width; height = can->height;
	tabe = (char **)ALLOCA(width*sizeof(char *)+width*height*sizeof(char));
	bzero((void *)tabe,width*sizeof(char *)+width*height*sizeof(char));
	for ( i = 0, tabeb = (char *)(tabe+width); i < width; i++ )
		tabe[i] = tabeb + height*i;
	define_cursor(can->window,runningcur);
	set_busy(can); set_selection();
	qcalc(tabe,can); qif_print(display,tabe,can);
	reset_selection(); reset_busy(can);
	define_cursor(can->window,normalcur);
}

#if defined(INTERVAL)
int objcp(NODE arg)
{
	int idsrc, idtrg, op_code;
	struct canvas *cansrc, *cantrg;

	idsrc = QTOS((Q)ARG0(arg));
	idtrg = QTOS((Q)ARG1(arg));
	op_code = QTOS((Q)ARG2(arg));
	cansrc = canvas[idsrc];
	cantrg = canvas[idtrg];
	obj_op(cansrc, cantrg, op_code);
	return idsrc;
}

void obj_op(struct canvas *cansrc, struct canvas *cantrg, int op)
{
	XImage *imgsrc, *imgtrg;
	int width, height, i, j;
	unsigned long src, trg, black, white;

	width = cansrc->width; height = cansrc->height;
	imgsrc = XGetImage(display, cansrc->pix, 0, 0, width, height, -1, ZPixmap);
	imgtrg = XGetImage(display, cantrg->pix, 0, 0, width, height, -1, ZPixmap);
	black=GetColor(display, "black");
	white=GetColor(display, "white");
	flush();
	define_cursor(cantrg->window,runningcur);
	set_busy(cantrg); set_selection();
	cantrg->precise = cansrc->precise;
	cantrg->noaxis = cansrc->noaxis;
	cantrg->noaxisb = cansrc->noaxisb;
	cantrg->vx = cansrc->vx;
	cantrg->vy = cansrc->vy;
	cantrg->formula = cansrc->formula;
	cantrg->width = cansrc->width;
	cantrg->height = cansrc->height;
	cantrg->xmin = cansrc->xmin;
	cantrg->xmax = cansrc->xmax;
	cantrg->ymin = cansrc->ymin;
	cantrg->ymax = cansrc->ymax;
	cantrg->zmin = cansrc->zmin;
	cantrg->zmax = cansrc->zmax;
	cantrg->nzstep = cansrc->nzstep;
	cantrg->qxmin = cansrc->qxmin;
	cantrg->qxmax = cansrc->qxmax;
	cantrg->qymin = cansrc->qymin;
	cantrg->qymax = cansrc->qymax;
	cantrg->pa = cansrc->pa;
	switch (op) {
		case 1:/* and case */
			for(i=0;i<width;i++)for(j=0;j<height;j++){
				src = XGetPixel(imgsrc,i,j);
				trg = XGetPixel(imgtrg,i,j);
				if ( (src == black) || (trg == black) )
					XPutPixel(imgtrg,i,j,black);
				else if ( (src == white) || (trg == white) )
					XPutPixel(imgtrg,i,j,white);
				else XPutPixel(imgtrg,i,j,(src & trg));
			}
			break;
		case 3:/* copy case */
			imgtrg->data = imgsrc->data;
			break;
		case 6:/* xor case */
			for(i=0;i<width;i++)for(j=0;j<height;j++){
				src = XGetPixel(imgsrc,i,j);
				trg = XGetPixel(imgtrg,i,j);
				if ( (src == black) || (trg == black) )
					XPutPixel(imgtrg,i,j,black);
				else if ( (src == white) && (trg == white) )
					XPutPixel(imgtrg,i,j,trg|src);
				else if ( (src != white) && (trg != white) )
					XPutPixel(imgtrg,i,j,white);
				else if ( src == white )
					XPutPixel(imgtrg,i,j,src);
			}
			break;
		case 7:/* or case */
			for(i=0;i<width;i++)for(j=0;j<height;j++){
				src = XGetPixel(imgsrc,i,j);
				trg = XGetPixel(imgtrg,i,j);
				if ( (src == black) || (trg == black) )
					XPutPixel(imgtrg,i,j,black);
				else if (src == white)
					XPutPixel(imgtrg,i,j,trg);
				else if (trg == white)
					XPutPixel(imgtrg,i,j,src);
			}
			break;
		default:
			break;
	}
	XPutImage(display, cantrg->pix, drawGC, imgtrg, 0, 0, 0, 0, width, height);
	reset_selection(); reset_busy(cantrg);
	define_cursor(cantrg->window,normalcur);
	copy_to_canvas(cantrg);
	count_and_flush();
	flush();
}

int ineqn(NODE arg)
{
	int id, op_code, orgcolor;
	struct canvas *can;
	LIST xrange, yrange, geom;
	NODE n;
	STRING wname;
	double **tbl;

	can = canvas[id = search_canvas()];
	orgcolor = can->color;
	can->formula = (P)ARG0(arg);
	can->color = QTOS((Q)ARG1(arg));
	xrange = (LIST)ARG2(arg);
	yrange = (LIST)ARG3(arg);
	geom   = (LIST)ARG4(arg);
	wname  = (STRING)ARG5(arg);
	op_code = 3;
	/* set canvas data */
	can->mode = MODE_INEQNP;
	can->width = QTOS((Q)BDY(BDY(geom)));
	can->height = QTOS((Q)BDY(NEXT(BDY(geom))));
	n = BDY(xrange); can->vx = VR((P)BDY(n)); n = NEXT(n);
	can->qxmin = (Q)BDY(n); n = NEXT(n); can->qxmax = (Q)BDY(n);
	can->xmin = ToReal(can->qxmin); can->xmax = ToReal(can->qxmax);
	n = BDY(yrange); can->vy = VR((P)BDY(n)); n = NEXT(n);
	can->qymin = (Q)BDY(n); n = NEXT(n); can->qymax = (Q)BDY(n);
	can->ymin = ToReal(can->qymin); can->ymax = ToReal(can->qymax);
	can->mode = MODE_INEQNP;
	if ( wname )
		can->wname = BDY(wname);
	else
		can->wname = "";
	create_canvas(can);
	ineqnmain(can, orgcolor, op_code);
	return id;
}

int ineqnover(NODE arg)
{
	int id;
	struct canvas *can;
	int orgcolor, op_code;

	id = QTOS((Q)ARG0(arg));
	can = canvas[id];
	orgcolor = can->color;
	can->formula = (P)ARG1(arg);
	can->color   = QTOS((Q)ARG2(arg));
	op_code      = QTOS((Q)ARG3(arg));
	can->mode    = MODE_INEQNP;
	ineqnmain(can, orgcolor, op_code);
	return id;
}

void ineqnmain(struct canvas *can, int orgcolor, int op_code)
{
	int **mask;
	double **tbl;
	int i,j;

	current_can = can;
	tbl = (double **)ALLOCA((can->height+1)*sizeof(double *));
	for ( i = 0; i <= can->height; i++ )
		tbl[i] = (double *)ALLOCA((can->width+1)*sizeof(double));
	mask = (int **)ALLOCA(can->height*sizeof(int *));
	for ( i = 0; i < can->height; i++)
		mask[i] = (int *)ALLOCA(can->width*sizeof(int));

	define_cursor(can->window,runningcur);
	set_busy(can); set_selection();
	ineqncalc(tbl, can, 1);
	for (j = 0; j < can->height; j++){
		for (i = 0; i < can->width; i++){
			if ( tbl[j][i] >= 0 ){
				if ( (tbl[j+1][i] <= 0 ) ||
					(tbl[j][i+1] <= 0) ||
					(tbl[j+1][i+1] <= 0) ) mask[j][i] = 0;
				else mask[j][i] = 1;
			} else {
				if( (tbl[j+1][i] >= 0) ||
					(tbl[j][i+1] >= 0) ||
					(tbl[j+1][i+1] >= 0) ) mask[j][i] = 0;
				else mask[j][i] = -1;
			}
		}
	}
	area_print(display, mask, can, op_code);
	reset_selection();
	reset_busy(can);
	define_cursor(can->window,normalcur);
#if !defined(VISUAL)
	set_drawcolor(orgcolor);
	can->color = orgcolor;
#endif
	copy_to_canvas(can);
}

#if defined(INTERVAL)
int itvifplot(NODE arg)
{
	int id, op_code, orgcolor;
	struct canvas *can;
	LIST xrange, yrange, zrange, geom;
	NODE n;
	STRING wname;
	double **tbl;
	int itvsize;

	can = canvas[id = search_canvas()];
	orgcolor = can->color;
	can->formula = (P)ARG0(arg);
	xrange = (LIST)ARG1(arg);
	yrange = (LIST)ARG2(arg);
	zrange = (LIST)ARG3(arg);
	geom   = (LIST)ARG4(arg);
	wname  = (STRING)ARG5(arg);
	itvsize = QTOS((Q)ARG6(arg));
	/* set canvas data */
	can->mode = MODE_INEQNP;
	can->width = QTOS((Q)BDY(BDY(geom)));
	can->height = QTOS((Q)BDY(NEXT(BDY(geom))));
	n = BDY(xrange); can->vx = VR((P)BDY(n)); n = NEXT(n);
	can->qxmin = (Q)BDY(n); n = NEXT(n); can->qxmax = (Q)BDY(n);
	can->xmin = ToReal(can->qxmin); can->xmax = ToReal(can->qxmax);
	n = BDY(yrange); can->vy = VR((P)BDY(n)); n = NEXT(n);
	can->qymin = (Q)BDY(n); n = NEXT(n); can->qymax = (Q)BDY(n);
	can->ymin = ToReal(can->qymin); can->ymax = ToReal(can->qymax);
	can->mode = MODE_INEQNP;
	if ( wname )
		can->wname = BDY(wname);
	else
		can->wname = "";
	create_canvas(can);
	itvplotmain(can, itvsize);
#if !defined(VISUAL)
	set_drawcolor(orgcolor);
	can->color = orgcolor;
#endif
	copy_to_canvas(can);
	return id;
}

void itvplotmain(struct canvas *can, int itvsize)
{
	int **mask;
	double **tbl;
	int i,j;
	int op_code;
	pointer *prp;

	tstart(); /* time calc */
	op_code=3;
	current_can = can;
	can->color=0xff00;
	mask = (int **)ALLOCA(can->height*sizeof(int *));
	for ( i = 0; i < can->height; i++){
		mask[i] = (int *)ALLOCA(can->width*sizeof(int));
		for (j = 0; j< can->width; j++) mask[i][j] = -1;
	}
	define_cursor(can->window,runningcur);
	set_busy(can); set_selection();
	itvcalc(mask, can, 1, itvsize);
	area_print(display, mask, can, op_code);
	reset_selection();
	reset_busy(can);
	define_cursor(can->window,normalcur);
	tstop(can); /* time calc */
}

// NORMAL type
int itvplot1(NODE arg)
{
	int id, op_code, orgcolor;
	struct canvas *can;
	LIST xrange, yrange, zrange, geom;
	NODE n;
	STRING wname;
	double **tbl;

	can = canvas[id = search_canvas()];
	orgcolor = can->color;
	can->formula = (P)ARG0(arg);
	xrange = (LIST)ARG1(arg);
	yrange = (LIST)ARG2(arg);
	zrange = (LIST)ARG3(arg);
	geom   = (LIST)ARG4(arg);
	wname  = (STRING)ARG5(arg);
	/* set canvas data */
	can->mode = MODE_INEQNP;
	can->width = QTOS((Q)BDY(BDY(geom)));
	can->height = QTOS((Q)BDY(NEXT(BDY(geom))));
	n = BDY(xrange); can->vx = VR((P)BDY(n)); n = NEXT(n);
	can->qxmin = (Q)BDY(n); n = NEXT(n); can->qxmax = (Q)BDY(n);
	can->xmin = ToReal(can->qxmin); can->xmax = ToReal(can->qxmax);
	n = BDY(yrange); can->vy = VR((P)BDY(n)); n = NEXT(n);
	can->qymin = (Q)BDY(n); n = NEXT(n); can->qymax = (Q)BDY(n);
	can->ymin = ToReal(can->qymin); can->ymax = ToReal(can->qymax);
	can->mode = MODE_INEQNP;
	if ( wname )
		can->wname = BDY(wname);
	else
		can->wname = "";
	create_canvas(can);
	itvplotmain1(can);
#if !defined(VISUAL)
	set_drawcolor(orgcolor);
	can->color = orgcolor;
#endif
	copy_to_canvas(can);
	return id;
}

void itvplotmain1(struct canvas *can)
{
	int **mask;
	double **tbl;
	int i,j;
	int op_code;

	op_code=3;
	current_can = can;
	mask = (int **)ALLOCA(can->height*sizeof(int *));
	for ( i = 0; i < can->height; i++){
		mask[i] = (int *)ALLOCA(can->width*sizeof(int));
		for (j = 0; j< can->width; j++) mask[i][j] = -1;
	}

	define_cursor(can->window,runningcur);
	set_busy(can); set_selection();
	itvcalc1(mask, can, 1);
	area_print(display, mask, can, op_code);
	reset_selection();
	reset_busy(can);
	define_cursor(can->window,normalcur);
}

// TRANSFER type
int itvplot2(NODE arg)
{
	int id, op_code, orgcolor;
	struct canvas *can;
	LIST xrange, yrange, zrange, geom;
	NODE n;
	STRING wname;
	double **tbl;

	can = canvas[id = search_canvas()];
	orgcolor = can->color;
	can->formula = (P)ARG0(arg);
	xrange = (LIST)ARG1(arg);
	yrange = (LIST)ARG2(arg);
	zrange = (LIST)ARG3(arg);
	geom   = (LIST)ARG4(arg);
	wname  = (STRING)ARG5(arg);
	/* set canvas data */
	can->mode = MODE_INEQNP;
	can->width = QTOS((Q)BDY(BDY(geom)));
	can->height = QTOS((Q)BDY(NEXT(BDY(geom))));
	n = BDY(xrange); can->vx = VR((P)BDY(n)); n = NEXT(n);
	can->qxmin = (Q)BDY(n); n = NEXT(n); can->qxmax = (Q)BDY(n);
	can->xmin = ToReal(can->qxmin); can->xmax = ToReal(can->qxmax);
	n = BDY(yrange); can->vy = VR((P)BDY(n)); n = NEXT(n);
	can->qymin = (Q)BDY(n); n = NEXT(n); can->qymax = (Q)BDY(n);
	can->ymin = ToReal(can->qymin); can->ymax = ToReal(can->qymax);
	can->mode = MODE_INEQNP;
	if ( wname )
		can->wname = BDY(wname);
	else
		can->wname = "";
	create_canvas(can);
	itvplotmain2(can);
#if !defined(VISUAL)
	set_drawcolor(orgcolor);
	can->color = orgcolor;
#endif
	copy_to_canvas(can);
	return id;
}

void itvplotmain2(struct canvas *can)
{
	int **mask;
	double **tbl;
	int i,j;
	int op_code;

	op_code=3;
	current_can = can;

	mask = (int **)ALLOCA(can->height*sizeof(int *));
	for ( i = 0; i < can->height; i++){
		mask[i] = (int *)ALLOCA(can->width*sizeof(int));
		for (j = 0; j< can->width; j++) mask[i][j] = -1;
	}

	define_cursor(can->window,runningcur);
	set_busy(can); set_selection();
	itvcalc2(mask, can, 1);
	area_print(display, mask, can, op_code);
	reset_selection();
	reset_busy(can);
	define_cursor(can->window,normalcur);
}

// RECURSION type
int itvplot3(NODE arg)
{
	int id, op_code, orgcolor;
	struct canvas *can;
	LIST xrange, yrange, zrange, geom;
	NODE n;
	STRING wname;
	double **tbl;
	int itvsize;

	can = canvas[id = search_canvas()];
	orgcolor = can->color;
	can->formula = (P)ARG0(arg);
	xrange = (LIST)ARG1(arg);
	yrange = (LIST)ARG2(arg);
	zrange = (LIST)ARG3(arg);
	geom   = (LIST)ARG4(arg);
	wname  = (STRING)ARG5(arg);
	itvsize = QTOS((Q)ARG6(arg));
	/* set canvas data */
	can->mode = MODE_INEQNP;
	can->width = QTOS((Q)BDY(BDY(geom)));
	can->height = QTOS((Q)BDY(NEXT(BDY(geom))));
	n = BDY(xrange); can->vx = VR((P)BDY(n)); n = NEXT(n);
	can->qxmin = (Q)BDY(n); n = NEXT(n); can->qxmax = (Q)BDY(n);
	can->xmin = ToReal(can->qxmin); can->xmax = ToReal(can->qxmax);
	n = BDY(yrange); can->vy = VR((P)BDY(n)); n = NEXT(n);
	can->qymin = (Q)BDY(n); n = NEXT(n); can->qymax = (Q)BDY(n);
	can->ymin = ToReal(can->qymin); can->ymax = ToReal(can->qymax);
	can->mode = MODE_INEQNP;
	if ( wname )
		can->wname = BDY(wname);
	else
		can->wname = "";
	create_canvas(can);
	itvplotmain3(can, itvsize);
#if !defined(VISUAL)
	set_drawcolor(orgcolor);
	can->color = orgcolor;
#endif
	copy_to_canvas(can);
	return id;
}

void itvplotmain3(struct canvas *can, int itvsize)
{
	int **mask;
	double **tbl;
	int i,j;
	int op_code;

	op_code=3;
	current_can = can;

	mask = (int **)ALLOCA(can->height*sizeof(int *));
	for ( i = 0; i < can->height; i++)
		mask[i] = (int *)ALLOCA(can->width*sizeof(int));

	define_cursor(can->window,runningcur);
	set_busy(can); set_selection();
	itvcalc3(mask, can, 1, itvsize);
	area_print(display, mask, can, op_code);
	reset_selection();
	reset_busy(can);
	define_cursor(can->window,normalcur);
}

// RECURSION and TRANSFER type
int itvplot4(NODE arg)
{
	int id, op_code, orgcolor;
	struct canvas *can;
	LIST xrange, yrange, zrange, geom;
	NODE n;
	STRING wname;
	double **tbl;
	int itvsize;

	can = canvas[id = search_canvas()];
	orgcolor = can->color;
	can->formula = (P)ARG0(arg);
	xrange = (LIST)ARG1(arg);
	yrange = (LIST)ARG2(arg);
	zrange = (LIST)ARG3(arg);
	geom   = (LIST)ARG4(arg);
	wname  = (STRING)ARG5(arg);
	itvsize = QTOS((Q)ARG6(arg));
	/* set canvas data */
	can->mode = MODE_INEQNP;
	can->width = QTOS((Q)BDY(BDY(geom)));
	can->height = QTOS((Q)BDY(NEXT(BDY(geom))));
	n = BDY(xrange); can->vx = VR((P)BDY(n)); n = NEXT(n);
	can->qxmin = (Q)BDY(n); n = NEXT(n); can->qxmax = (Q)BDY(n);
	can->xmin = ToReal(can->qxmin); can->xmax = ToReal(can->qxmax);
	n = BDY(yrange); can->vy = VR((P)BDY(n)); n = NEXT(n);
	can->qymin = (Q)BDY(n); n = NEXT(n); can->qymax = (Q)BDY(n);
	can->ymin = ToReal(can->qymin); can->ymax = ToReal(can->qymax);
	can->mode = MODE_INEQNP;
	if ( wname )
		can->wname = BDY(wname);
	else
		can->wname = "";
	create_canvas(can);
	itvplotmain4(can, itvsize);
#if !defined(VISUAL)
	set_drawcolor(orgcolor);
	can->color = orgcolor;
#endif
	copy_to_canvas(can);
	return id;
}

void itvplotmain4(struct canvas *can, int itvsize)
{
	int **mask;
	double **tbl;
	int i,j;
	int op_code;

	tstart();/* time calc */
	op_code=3;
	current_can = can;

	mask = (int **)ALLOCA(can->height*sizeof(int *));
	for ( i = 0; i < can->height; i++){
		mask[i] = (int *)ALLOCA(can->width*sizeof(int));
		for (j = 0; j< can->width; j++) mask[i][j] = -1;
	}

	define_cursor(can->window,runningcur);
	set_busy(can); set_selection();
	itvcalc4(mask, can, 1, itvsize);
	area_print(display, mask, can, op_code);
	reset_selection();
	reset_busy(can);
	define_cursor(can->window,normalcur);
	tstop(can); /* time calc */
}
#endif
#endif