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Annotation of OpenXM_contrib2/asir2000/plot/if.c, Revision 1.20

1.2       noro        1: /*
                      2:  * Copyright (c) 1994-2000 FUJITSU LABORATORIES LIMITED
                      3:  * All rights reserved.
                      4:  *
                      5:  * FUJITSU LABORATORIES LIMITED ("FLL") hereby grants you a limited,
                      6:  * non-exclusive and royalty-free license to use, copy, modify and
                      7:  * redistribute, solely for non-commercial and non-profit purposes, the
                      8:  * computer program, "Risa/Asir" ("SOFTWARE"), subject to the terms and
                      9:  * conditions of this Agreement. For the avoidance of doubt, you acquire
                     10:  * only a limited right to use the SOFTWARE hereunder, and FLL or any
                     11:  * third party developer retains all rights, including but not limited to
                     12:  * copyrights, in and to the SOFTWARE.
                     13:  *
                     14:  * (1) FLL does not grant you a license in any way for commercial
                     15:  * purposes. You may use the SOFTWARE only for non-commercial and
                     16:  * non-profit purposes only, such as academic, research and internal
                     17:  * business use.
                     18:  * (2) The SOFTWARE is protected by the Copyright Law of Japan and
                     19:  * international copyright treaties. If you make copies of the SOFTWARE,
                     20:  * with or without modification, as permitted hereunder, you shall affix
                     21:  * to all such copies of the SOFTWARE the above copyright notice.
                     22:  * (3) An explicit reference to this SOFTWARE and its copyright owner
                     23:  * shall be made on your publication or presentation in any form of the
                     24:  * results obtained by use of the SOFTWARE.
                     25:  * (4) In the event that you modify the SOFTWARE, you shall notify FLL by
1.3       noro       26:  * e-mail at risa-admin@sec.flab.fujitsu.co.jp of the detailed specification
1.2       noro       27:  * for such modification or the source code of the modified part of the
                     28:  * SOFTWARE.
                     29:  *
                     30:  * THE SOFTWARE IS PROVIDED AS IS WITHOUT ANY WARRANTY OF ANY KIND. FLL
                     31:  * MAKES ABSOLUTELY NO WARRANTIES, EXPRESSED, IMPLIED OR STATUTORY, AND
                     32:  * EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS
                     33:  * FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF THIRD PARTIES'
                     34:  * RIGHTS. NO FLL DEALER, AGENT, EMPLOYEES IS AUTHORIZED TO MAKE ANY
                     35:  * MODIFICATIONS, EXTENSIONS, OR ADDITIONS TO THIS WARRANTY.
                     36:  * UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY, TORT, CONTRACT,
                     37:  * OR OTHERWISE, SHALL FLL BE LIABLE TO YOU OR ANY OTHER PERSON FOR ANY
                     38:  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, PUNITIVE OR CONSEQUENTIAL
                     39:  * DAMAGES OF ANY CHARACTER, INCLUDING, WITHOUT LIMITATION, DAMAGES
                     40:  * ARISING OUT OF OR RELATING TO THE SOFTWARE OR THIS AGREEMENT, DAMAGES
                     41:  * FOR LOSS OF GOODWILL, WORK STOPPAGE, OR LOSS OF DATA, OR FOR ANY
                     42:  * DAMAGES, EVEN IF FLL SHALL HAVE BEEN INFORMED OF THE POSSIBILITY OF
                     43:  * SUCH DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY. EVEN IF A PART
                     44:  * OF THE SOFTWARE HAS BEEN DEVELOPED BY A THIRD PARTY, THE THIRD PARTY
                     45:  * DEVELOPER SHALL HAVE NO LIABILITY IN CONNECTION WITH THE USE,
                     46:  * PERFORMANCE OR NON-PERFORMANCE OF THE SOFTWARE.
                     47:  *
1.20    ! saito      48:  * $OpenXM: OpenXM_contrib2/asir2000/plot/if.c,v 1.19 2005/12/21 23:18:16 noro Exp $
1.2       noro       49: */
1.1       noro       50: #include "ca.h"
                     51: #include "parse.h"
                     52: #include "ox.h"
                     53: #include "ifplot.h"
                     54:
1.8       noro       55: extern JMP_BUF ox_env;
1.1       noro       56:
1.4       noro       57: int open_canvas(NODE arg)
                     58: {
                     59:        int id;
                     60:        struct canvas *can;
                     61:        LIST wsize;
                     62:        STRING wname;
                     63:
                     64:        wsize = (LIST)ARG0(arg);
                     65:        wname = (STRING)ARG1(arg);
                     66:
                     67:        can = canvas[id = search_canvas()];
                     68:        can->mode = MODE_INTERACTIVE;
                     69:        if ( !wsize ) {
                     70:                can->width = DEFAULTWIDTH; can->height = DEFAULTHEIGHT;
                     71:        } else {
                     72:                can->width = QTOS((Q)BDY(BDY(wsize)));
                     73:                can->height = QTOS((Q)BDY(NEXT(BDY(wsize))));
                     74:        }
                     75:        if ( wname )
                     76:                can->wname = BDY(wname);
                     77:        else
                     78:                can->wname = "";
                     79:        create_canvas(can);
                     80:        return id;
                     81: }
                     82:
1.1       noro       83: int plot(NODE arg)
                     84: {
                     85:        int id;
                     86:        NODE n;
                     87:        struct canvas *can;
                     88:        P formula;
                     89:        LIST xrange,yrange,zrange,wsize;
                     90:        STRING wname;
1.12      noro       91:        V v;
1.1       noro       92:
                     93:        formula = (P)ARG0(arg);
                     94:        xrange = (LIST)ARG1(arg);
                     95:        yrange = (LIST)ARG2(arg);
                     96:        zrange = (LIST)ARG3(arg);
                     97:        wsize = (LIST)ARG4(arg);
                     98:        wname = (STRING)ARG5(arg);
                     99:
                    100:        can = canvas[id = search_canvas()];
1.12      noro      101:        if ( xrange ) {
                    102:                n = BDY(xrange); can->vx = VR((P)BDY(n)); n = NEXT(n);
                    103:                can->qxmin = (Q)BDY(n); n = NEXT(n); can->qxmax = (Q)BDY(n);
                    104:                can->xmin = ToReal(can->qxmin); can->xmax = ToReal(can->qxmax);
                    105:        }
1.1       noro      106:        if ( yrange ) {
                    107:                n = BDY(yrange); can->vy = VR((P)BDY(n)); n = NEXT(n);
                    108:                can->qymin = (Q)BDY(n); n = NEXT(n); can->qymax = (Q)BDY(n);
                    109:                can->ymin = ToReal(can->qymin); can->ymax = ToReal(can->qymax);
1.12      noro      110:        }
                    111:        if ( xrange && yrange )
                    112:                can->mode = zrange ? MODE_CONPLOT : MODE_IFPLOT;
                    113:        else
                    114:                can->mode = xrange ? MODE_PLOT : MODE_POLARPLOT;
                    115:
                    116:        if ( zrange ) {
1.15      noro      117:                n = NEXT(BDY(zrange));
1.12      noro      118:                can->zmin = ToReal(BDY(n));
                    119:                n = NEXT(n); can->zmax = ToReal(BDY(n));
                    120:                n = NEXT(n);
                    121:                if ( can->mode == MODE_CONPLOT )
                    122:                        can->nzstep = n ? QTOS((Q)BDY(n)) : MAXGC;
                    123:                else {
                    124:                        /* XXX */
1.15      noro      125:                        can->vx = VR((P)BDY(BDY(zrange)));
1.12      noro      126:                        can->nzstep = n ? QTOS((Q)BDY(n)) : DEFAULTPOLARSTEP;
                    127:                }
                    128:        }
                    129:
1.1       noro      130:        if ( !wsize ) {
                    131:                can->width = DEFAULTWIDTH; can->height = DEFAULTHEIGHT;
                    132:        } else {
                    133:                can->width = QTOS((Q)BDY(BDY(wsize)));
                    134:                can->height = QTOS((Q)BDY(NEXT(BDY(wsize))));
                    135:        }
                    136:        if ( wname )
                    137:                can->wname = BDY(wname);
                    138:        else
                    139:                can->wname = "";
                    140:        can->formula = formula;
                    141:        if ( can->mode == MODE_PLOT ) {
                    142:                plotcalc(can);
1.14      noro      143:                create_canvas(can);
1.1       noro      144:                plot_print(display,can);
1.12      noro      145:        } else if ( can->mode == MODE_POLARPLOT ) {
                    146:                polarplotcalc(can);
1.14      noro      147:                create_canvas(can);
1.12      noro      148:                plot_print(display,can);
1.14      noro      149:        } else {
                    150:                create_canvas(can);
1.1       noro      151:                ifplotmain(can);
1.12      noro      152:        }
1.1       noro      153:        copy_to_canvas(can);
                    154:        return id;
                    155: }
                    156:
1.6       noro      157: int memory_plot(NODE arg,LIST *bytes)
                    158: {
                    159:        NODE n;
                    160:        struct canvas tmp_can;
                    161:        struct canvas *can;
                    162:        P formula;
                    163:        LIST xrange,yrange,zrange,wsize;
                    164:        int width,height;
                    165:        double **tabe;
                    166:        int i;
                    167:        BYTEARRAY barray;
                    168:        Q qw,qh;
                    169:
                    170:        formula = (P)ARG0(arg);
                    171:        xrange = (LIST)ARG1(arg);
                    172:        yrange = (LIST)ARG2(arg);
                    173:        zrange = (LIST)ARG3(arg);
                    174:        wsize = (LIST)ARG4(arg);
                    175:
1.19      noro      176:        bzero((char *)&tmp_can,sizeof(tmp_can));
1.6       noro      177:        can = &tmp_can;
                    178:        n = BDY(xrange); can->vx = VR((P)BDY(n)); n = NEXT(n);
                    179:        can->qxmin = (Q)BDY(n); n = NEXT(n); can->qxmax = (Q)BDY(n);
                    180:        can->xmin = ToReal(can->qxmin); can->xmax = ToReal(can->qxmax);
                    181:        if ( yrange ) {
                    182:                n = BDY(yrange); can->vy = VR((P)BDY(n)); n = NEXT(n);
                    183:                can->qymin = (Q)BDY(n); n = NEXT(n); can->qymax = (Q)BDY(n);
                    184:                can->ymin = ToReal(can->qymin); can->ymax = ToReal(can->qymax);
                    185:                if ( zrange ) {
                    186:                        n = NEXT(BDY(zrange));
                    187:                        can->zmin = ToReal(BDY(n)); n = NEXT(n); can->zmax = ToReal(BDY(n));
                    188:                        if ( n = NEXT(n) )
                    189:                                can->nzstep = QTOS((Q)BDY(n));
                    190:                        else
                    191:                                can->nzstep = MAXGC;
                    192:                        can->mode = MODE_CONPLOT;
                    193:                } else
                    194:                        can->mode = MODE_IFPLOT;
                    195:        } else
                    196:                can->mode = MODE_PLOT;
                    197:        if ( !wsize ) {
                    198:                can->width = DEFAULTWIDTH; can->height = DEFAULTHEIGHT;
                    199:        } else {
                    200:                can->width = QTOS((Q)BDY(BDY(wsize)));
                    201:                can->height = QTOS((Q)BDY(NEXT(BDY(wsize))));
                    202:        }
                    203:        can->wname = "";
                    204:        can->formula = formula;
1.19      noro      205:        if ( can->mode == MODE_PLOT ) {
1.6       noro      206:                plotcalc(can);
1.19      noro      207:                memory_print(can,&barray);
                    208:                STOQ(can->width,qw); STOQ(can->height,qh);
                    209:                n = mknode(3,qw,qh,barray);
                    210:                MKLIST(*bytes,n);
                    211:        } else {
1.6       noro      212:                width = can->width; height = can->height;
                    213:                tabe = (double **)ALLOCA(width*sizeof(double *));
                    214:                for ( i = 0; i < width; i++ )
                    215:                        tabe[i] = (double *)ALLOCA(height*sizeof(double));
                    216:                calc(tabe,can,1);
                    217:                memory_if_print(tabe,can,&barray);
                    218:                STOQ(width,qw); STOQ(height,qh);
                    219:                n = mknode(3,qw,qh,barray);
                    220:                MKLIST(*bytes,n);
                    221:        }
                    222: }
                    223:
1.1       noro      224: int plotover(NODE arg)
                    225: {
1.20    ! saito     226:        int index, org_color;
1.1       noro      227:        P formula;
                    228:        struct canvas *can;
                    229:        struct canvas fakecan;
                    230:        VL vl,vl0;
                    231:
                    232:        index = QTOS((Q)ARG0(arg));
                    233:        formula = (P)ARG1(arg);
                    234:        can = canvas[index];
1.20    ! saito     235:        org_color = can->color;
1.1       noro      236:        if ( !can->window )
                    237:                return -1;
1.7       noro      238:        get_vars_recursive((Obj)formula,&vl);
1.1       noro      239:        for ( vl0 = vl; vl0; vl0 = NEXT(vl0) )
1.7       noro      240:                if ( vl0->v->attr == (pointer)V_IND )
1.1       noro      241:                        if ( vl->v != can->vx && vl->v != can->vy )
                    242:                                return -1;
1.17      noro      243:        if ( argc(arg) == 3 )
                    244:                can->color = QTOS((Q)ARG2(arg));
                    245:        else
                    246:                can->color = 0;
1.18      noro      247: #if !defined(VISUAL)
1.17      noro      248:        set_drawcolor(can->color);
1.18      noro      249: #endif
1.1       noro      250:        current_can = can;
                    251:        fakecan = *can; fakecan.formula = formula;
                    252:        if ( can->mode == MODE_PLOT ) {
                    253:                plotcalc(&fakecan);
                    254:                plot_print(display,&fakecan);
                    255:        } else
                    256:                ifplotmain(&fakecan);
                    257:        copy_to_canvas(&fakecan);
1.20    ! saito     258:        can->color = org_color;
1.1       noro      259:        return index;
                    260: }
                    261:
                    262: int drawcircle(NODE arg)
                    263: {
1.4       noro      264: #if !defined(VISUAL)
1.1       noro      265:        int id;
                    266:        int index;
                    267:        pointer ptr;
                    268:        Q ret;
                    269:        LIST xyr;
                    270:        Obj x,y,r;
                    271:        int wx,wy,wr;
                    272:        struct canvas *can;
                    273:        struct canvas fakecan;
                    274:
                    275:        index = QTOS((Q)ARG0(arg));
                    276:        xyr = (LIST)ARG1(arg);
                    277:        x = (Obj)ARG0(BDY(xyr)); y = (Obj)ARG1(BDY(xyr)); r = (Obj)ARG2(BDY(xyr));
                    278:        can = canvas[index];
                    279:        if ( !can->window )
                    280:                return -1;
                    281:        else {
                    282:                current_can = can;
                    283:                wx = (ToReal(x)-can->xmin)*can->width/(can->xmax-can->xmin);
                    284:                wy = (can->ymax-ToReal(y))*can->height/(can->ymax-can->ymin);
                    285:                wr = ToReal(r);
                    286:                XFillArc(display,can->pix,colorGC,wx-wr/2,wy-wr/2,wr,wr,0,360*64);
                    287:                copy_to_canvas(can);
                    288:                return index;
                    289:        }
1.4       noro      290: #endif
                    291: }
                    292:
                    293: int draw_obj(NODE arg)
                    294: {
                    295:        int index;
1.5       noro      296:        int x,y,u,v,len,r;
1.4       noro      297:        NODE obj,n;
                    298:        RealVect *vect;
                    299:        struct canvas *can;
1.5       noro      300:        int color;
1.4       noro      301:
                    302:        index = QTOS((Q)ARG0(arg));
                    303:        can = canvas[index];
1.10      noro      304:        if ( !can && closed_canvas[index] ) {
                    305:                canvas[index] = closed_canvas[index];
                    306:                closed_canvas[index] = 0;
                    307:                can = canvas[index];
                    308:                popup_canvas(index);
                    309:                current_can = can;
                    310:        } else if ( !can || (can && !can->window) ) {
1.5       noro      311:                set_lasterror("draw_obj : canvas does not exist");
1.4       noro      312:                return -1;
1.5       noro      313:        }
1.4       noro      314:
                    315:        obj = BDY((LIST)ARG1(arg));
1.5       noro      316:        if ( argc(arg) == 3 )
                    317:                color = QTOS((Q)ARG2(arg));
                    318:        else
                    319:                color = 0; /* black */
                    320:        switch ( len = length(obj) ) {
1.4       noro      321:                case 2: /* point */
                    322:                        x = (int)ToReal((Q)ARG0(obj)); y = (int)ToReal((Q)ARG1(obj));
1.5       noro      323:                        draw_point(display,can,x,y,color);
1.16      noro      324:                        MKRVECT3(vect,x,y,color); MKNODE(n,vect,can->history);
                    325:                        can->history = n;
1.5       noro      326:                        break;
                    327:                case 3: /* circle */
                    328:                        x = (int)ToReal((Q)ARG0(obj)); y = (int)ToReal((Q)ARG1(obj));
                    329:                        r = (int)ToReal((Q)ARG2(obj));
1.16      noro      330:                        MKRVECT4(vect,x,y,r,color); MKNODE(n,vect,can->history);
                    331:                        can->history = n;
1.4       noro      332:                        break;
                    333:                case 4: /* line */
                    334:                        x = (int)ToReal((Q)ARG0(obj)); y = (int)ToReal((Q)ARG1(obj));
                    335:                        u = (int)ToReal((Q)ARG2(obj)); v = (int)ToReal((Q)ARG3(obj));
1.5       noro      336:                        draw_line(display,can,x,y,u,v,color);
1.16      noro      337:                        MKRVECT5(vect,x,y,u,v,color); MKNODE(n,vect,can->history);
                    338:                        can->history = n;
1.4       noro      339:                        break;
                    340:                default:
1.5       noro      341:                        set_lasterror("draw_obj : invalid request");
1.4       noro      342:                        return -1;
                    343:        }
1.9       noro      344:        return 0;
                    345: }
                    346:
                    347: int draw_string(NODE arg)
                    348: {
                    349:        int index,x,y;
                    350:        char *str;
                    351:        NODE pos;
                    352:        struct canvas *can;
                    353:        int color;
                    354:
                    355:        index = QTOS((Q)ARG0(arg));
                    356:        can = canvas[index];
1.11      noro      357:        if ( !can && closed_canvas[index] ) {
                    358:                canvas[index] = closed_canvas[index];
                    359:                closed_canvas[index] = 0;
                    360:                can = canvas[index];
                    361:                popup_canvas(index);
                    362:                current_can = can;
                    363:        } else if ( !can || (can && !can->window) ) {
                    364:                set_lasterror("draw_obj : canvas does not exist");
1.9       noro      365:                return -1;
                    366:        }
                    367:
                    368:        pos = BDY((LIST)ARG1(arg));
                    369:        str = BDY((STRING)ARG2(arg));
                    370:        if ( argc(arg) == 4 )
                    371:                color = QTOS((Q)ARG3(arg));
                    372:        else
                    373:                color = 0; /* black */
                    374:        x = (int)ToReal((Q)ARG0(pos));
                    375:        y = (int)ToReal((Q)ARG1(pos));
                    376:        draw_character_string(display,can,x,y,str,color);
1.4       noro      377:        return 0;
                    378: }
                    379:
                    380: int clear_canvas(NODE arg)
                    381: {
                    382:        int index;
                    383:        struct canvas *can;
                    384:
                    385:        index = QTOS((Q)ARG0(arg));
                    386:        can = canvas[index];
                    387:        if ( !can || !can->window )
                    388:                return -1;
                    389:        clear_pixmap(can);
                    390:        copy_to_canvas(can);
                    391:        /* clear the history */
                    392:        can->history = 0;
1.1       noro      393: }
                    394:
                    395: #define RealtoDbl(r) ((r)?BDY(r):0.0)
                    396:
                    397: int arrayplot(NODE arg)
                    398: {
                    399:        int id,ix,w,h;
                    400:        VECT array;
                    401:        LIST xrange,wsize;
                    402:        char *wname;
                    403:        NODE n;
                    404:        double ymax,ymin,dy,xstep;
                    405:        Real *tab;
                    406:        struct canvas *can;
                    407:        POINT *pa;
                    408:
                    409:        array = (VECT)ARG0(arg);
                    410:        xrange = (LIST)ARG1(arg);
                    411:        can = canvas[id = search_canvas()];
                    412:        n = BDY(xrange); can->vx = VR((P)BDY(n)); n = NEXT(n);
                    413:        can->qxmin = (Q)BDY(n); n = NEXT(n); can->qxmax = (Q)BDY(n);
                    414:        can->xmin = ToReal(can->qxmin); can->xmax = ToReal(can->qxmax);
                    415:        if ( !wsize ) {
                    416:                can->width = DEFAULTWIDTH; can->height = DEFAULTHEIGHT;
                    417:        } else {
                    418:                can->width = QTOS((Q)BDY(BDY(wsize)));
                    419:                can->height = QTOS((Q)BDY(NEXT(BDY(wsize))));
                    420:        }
                    421:        can->wname = wname; can->formula = 0; can->mode = MODE_PLOT;
                    422:        create_canvas(can);
                    423:        w = array->len;
                    424:        h = can->height;
                    425:        tab = (Real *)BDY(array);
                    426:        if ( can->ymax == can->ymin ) {
                    427:                for ( ymax = ymin = RealtoDbl(tab[0]), ix = 1; ix < w; ix++ ) {
                    428:                        if ( RealtoDbl(tab[ix]) > ymax )
                    429:                                ymax = RealtoDbl(tab[ix]);
                    430:                        if ( RealtoDbl(tab[ix]) < ymin )
                    431:                                ymin = RealtoDbl(tab[ix]);
                    432:                }
                    433:                can->ymax = ymax; can->ymin = ymin;
                    434:        } else {
                    435:                ymax = can->ymax; ymin = can->ymin;
                    436:        }
                    437:        dy = ymax-ymin;
                    438:        can->pa = (struct pa *)MALLOC(sizeof(struct pa));
                    439:        can->pa[0].length = w;
                    440:        can->pa[0].pos = pa = (POINT *)MALLOC(w*sizeof(POINT));
                    441:        xstep = (double)can->width/(double)(w-1);
                    442:        for ( ix = 0; ix < w; ix++ ) {
                    443: #ifndef MAXSHORT
                    444: #define MAXSHORT ((short)0x7fff)
                    445: #endif
                    446:                double t;
                    447:
                    448:                pa[ix].x = (int)(ix*xstep);
                    449:                t = (h - 1)*(ymax - RealtoDbl(tab[ix]))/dy;
                    450:                if ( t > MAXSHORT )
                    451:                        pa[ix].y = MAXSHORT;
                    452:                else if ( t < -MAXSHORT )
                    453:                        pa[ix].y = -MAXSHORT;
                    454:                else
1.7       noro      455:                        pa[ix].y = (long)t;
1.1       noro      456:        }
                    457:        plot_print(display,can);
                    458:        copy_to_canvas(can);
                    459:        return id;
                    460: }
                    461:
1.7       noro      462: void ifplot_resize(struct canvas *can,POINT spos,POINT epos)
1.1       noro      463: {
                    464:        struct canvas *ncan;
                    465:        struct canvas fakecan;
                    466:        Q dx,dy,dx2,dy2,xmin,xmax,ymin,ymax,xmid,ymid;
                    467:        Q sx,sy,ex,ey,cw,ch,ten,two;
                    468:        Q s,t;
                    469:        int new;
                    470:        int w,h,m;
                    471:
                    472:        if ( XC(spos) < XC(epos) && YC(spos) < YC(epos) ) {
                    473:                if ( can->precise && !can->wide ) {
                    474:                        fakecan = *can; ncan = &fakecan;
                    475:                } else {
                    476:                        new = search_canvas(); ncan = canvas[new];
                    477:                }
                    478:                ncan->mode = can->mode;
                    479:                ncan->zmin = can->zmin; ncan->zmax = can->zmax;
                    480:                ncan->nzstep = can->nzstep;
                    481:                ncan->wname = can->wname;
                    482:                ncan->vx = can->vx; ncan->vy = can->vy;
                    483:                ncan->formula = can->formula;
                    484:                w = XC(epos)-XC(spos);
                    485:                h = YC(epos)-YC(spos);
                    486:                m = MAX(can->width,can->height);
                    487:                if ( can->precise ) {
                    488:                        ncan->width = w; ncan->height = h;
                    489:                } else if ( w > h ) {
                    490:                        ncan->width = m; ncan->height = m * h/w;
                    491:                } else {
                    492:                        ncan->width = m * w/h; ncan->height = m;
                    493:                }
                    494:                if ( can->wide ) {
                    495:                        STOQ(10,ten); STOQ(2,two);
                    496:                        subq(can->qxmax,can->qxmin,&t); mulq(t,ten,&dx);
                    497:                        subq(can->qymax,can->qymin,&t); mulq(t,ten,&dy);
                    498:                        addq(can->qxmax,can->qxmin,&t); divq(t,two,&xmid);
                    499:                        addq(can->qymax,can->qymin,&t); divq(t,two,&ymid);
                    500:                        divq(dx,two,&dx2); divq(dy,two,&dy2);
                    501:                        subq(xmid,dx2,&xmin); addq(xmid,dx2,&xmax);
                    502:                        subq(ymid,dy2,&ymin); addq(ymid,dy2,&ymax);
                    503:                } else {
                    504:                        subq(can->qxmax,can->qxmin,&dx); subq(can->qymax,can->qymin,&dy);
                    505:                        xmin = can->qxmin; xmax = can->qxmax;
                    506:                        ymin = can->qymin; ymax = can->qymax;
                    507:                }
                    508:                STOQ(XC(spos),sx); STOQ(YC(spos),sy); STOQ(XC(epos),ex); STOQ(YC(epos),ey);
                    509:                STOQ(can->width,cw); STOQ(can->height,ch);
                    510:                mulq(sx,dx,&t); divq(t,cw,&s); addq(xmin,s,&ncan->qxmin);
                    511:                mulq(ex,dx,&t); divq(t,cw,&s); addq(xmin,s,&ncan->qxmax);
                    512:                mulq(ey,dy,&t); divq(t,ch,&s); subq(ymax,s,&ncan->qymin);
                    513:                mulq(sy,dy,&t); divq(t,ch,&s); subq(ymax,s,&ncan->qymax);
                    514:                ncan->xmin = ToReal(ncan->qxmin); ncan->xmax = ToReal(ncan->qxmax);
                    515:                ncan->ymin = ToReal(ncan->qymin); ncan->ymax = ToReal(ncan->qymax);
                    516:                if ( can->precise && !can->wide ) {
                    517:                        current_can = can;
                    518:                        alloc_pixmap(ncan);
1.4       noro      519: #if defined(VISUAL)
                    520:                        ncan->real_can = can;
                    521: #endif
1.1       noro      522:                        qifplotmain(ncan);
                    523:                        copy_subimage(ncan,can,spos);
                    524:                        copy_to_canvas(can);
                    525:                } else {
                    526:                        create_canvas(ncan);
                    527:                        if ( can->precise )
                    528:                                qifplotmain(ncan);
                    529:                        else
                    530:                                ifplotmain(ncan);
                    531:                        copy_to_canvas(ncan);
                    532:                }
                    533:        }
                    534: }
                    535:
1.7       noro      536: void plot_resize(struct canvas *can,POINT spos,POINT epos)
1.1       noro      537: {
                    538:        struct canvas *ncan;
                    539:        Q dx,dx2,xmin,xmax,xmid;
1.7       noro      540:        double dy,ymin,ymax,ymid;
1.1       noro      541:        Q sx,ex,cw,ten,two;
                    542:        Q s,t;
                    543:        int new;
                    544:        int w,h,m;
                    545:
                    546:        if ( XC(spos) < XC(epos) && YC(spos) < YC(epos) ) {
                    547:                new = search_canvas(); ncan = canvas[new];
                    548:                ncan->mode = can->mode;
                    549:                ncan->zmin = can->zmin; ncan->zmax = can->zmax;
                    550:                ncan->nzstep = can->nzstep;
                    551:                ncan->wname = can->wname;
                    552:                ncan->vx = can->vx; ncan->vy = can->vy;
                    553:                ncan->formula = can->formula;
                    554:                w = XC(epos)-XC(spos);
                    555:                h = YC(epos)-YC(spos);
                    556:                m = MAX(can->width,can->height);
                    557:                if ( w > h ) {
                    558:                        ncan->width = m; ncan->height = m * h/w;
                    559:                } else {
                    560:                        ncan->width = m * w/h; ncan->height = m;
                    561:                }
                    562:                if ( can->wide ) {
                    563:                        STOQ(10,ten); STOQ(2,two);
                    564:                        subq(can->qxmax,can->qxmin,&t); mulq(t,ten,&dx);
                    565:                        addq(can->qxmax,can->qxmin,&t); divq(t,two,&xmid);
                    566:                        divq(dx,two,&dx2); subq(xmid,dx2,&xmin); addq(xmid,dx2,&xmax);
                    567:
                    568:                        dy = (can->ymax-can->ymin)*10;
                    569:                        ymid = (can->ymax+can->ymin)/2;
                    570:                        ymin = ymid-dy/2; ymax = ymid+dy/2;
                    571:                } else {
                    572:                        subq(can->qxmax,can->qxmin,&dx);
                    573:                        xmin = can->qxmin; xmax = can->qxmax;
                    574:
                    575:                        dy = can->ymax-can->ymin;
                    576:                        ymin = can->ymin; ymax = can->ymax;
                    577:                }
                    578:                STOQ(XC(spos),sx); STOQ(XC(epos),ex); STOQ(can->width,cw);
                    579:                mulq(sx,dx,&t); divq(t,cw,&s); addq(xmin,s,&ncan->qxmin);
                    580:                mulq(ex,dx,&t); divq(t,cw,&s); addq(xmin,s,&ncan->qxmax);
                    581:                ncan->xmin = ToReal(ncan->qxmin); ncan->xmax = ToReal(ncan->qxmax);
                    582:
                    583:                ncan->ymin = ymax-YC(epos)*dy/can->height;
                    584:                ncan->ymax = ymax-YC(spos)*dy/can->height;
                    585:
                    586:                create_canvas(ncan);
                    587:                plotcalc(ncan);
                    588:                plot_print(display,ncan);
                    589:                copy_to_canvas(ncan);
                    590:        }
                    591: }
                    592:
1.7       noro      593: void ifplotmain(struct canvas *can)
1.1       noro      594: {
                    595:        int width,height;
1.7       noro      596:        double **tabe;
1.1       noro      597:        int i;
                    598:
                    599:        width = can->width; height = can->height;
                    600:        tabe = (double **)ALLOCA(width*sizeof(double *));
                    601:        for ( i = 0; i < width; i++ )
                    602:                tabe[i] = (double *)ALLOCA(height*sizeof(double));
                    603:        define_cursor(can->window,runningcur);
                    604:        set_busy(can); set_selection();
1.6       noro      605:        calc(tabe,can,0); if_print(display,tabe,can);
1.1       noro      606:        reset_selection(); reset_busy(can);
                    607:        define_cursor(can->window,normalcur);
                    608: }
                    609:
1.7       noro      610: void qifplotmain(struct canvas *can)
1.1       noro      611: {
                    612:        int width,height;
                    613:        char **tabe,*tabeb;
                    614:        int i;
                    615:
                    616:        width = can->width; height = can->height;
                    617:        tabe = (char **)ALLOCA(width*sizeof(char *)+width*height*sizeof(char));
1.8       noro      618:        bzero((void *)tabe,width*sizeof(char *)+width*height*sizeof(char));
1.1       noro      619:        for ( i = 0, tabeb = (char *)(tabe+width); i < width; i++ )
                    620:                tabe[i] = tabeb + height*i;
                    621:        define_cursor(can->window,runningcur);
                    622:        set_busy(can); set_selection();
                    623:        qcalc(tabe,can); qif_print(display,tabe,can);
                    624:        reset_selection(); reset_busy(can);
                    625:        define_cursor(can->window,normalcur);
                    626: }

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