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greg |
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#ifndef lint |
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greg |
1.2 |
static const char RCSid[] = "$Id: xplot.c,v 1.1 2003/02/22 02:07:26 greg Exp $"; |
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greg |
1.1 |
#endif |
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/* |
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* X window plotting functions |
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* |
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* 2/26/86 |
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*/ |
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#include "meta.h" |
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#include "plot.h" |
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#undef TRUE |
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#undef FALSE |
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#include <X/Xlib.h> |
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#define BORWIDTH 5 |
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#define mapx(x) CONV(x,dxsize) |
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#define mapy(y) CONV((XYSIZE-1)-(y),dysize) |
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#define fill(xmin,ymin,xmax,ymax,pm) \ |
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XTileSet(wind,xmin,ymin,(xmax)-(xmin)+1,(ymax)-(ymin)+1,pm) |
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#define MAXVERT 128 |
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#define MAXCOLOR 65535 |
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/* X window fonts */ |
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static struct { |
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char *name; /* font name */ |
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Font id; /* font id */ |
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} font[] = { |
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{"9x15", 0}, |
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{"8x13", 0}, |
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{"6x13", 0}, |
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{"vtdwidth", 0}, |
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{"accordbfx", 0} |
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}; |
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/* map to our matrix string types */ |
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static int fontmap[16] = {0,3,0,3,1,3,1,3,2,4,2,4,2,4,2,4}; |
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/* colors */ |
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int pixel[4]; |
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int dxsize, dysize; /* window size */ |
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Window wind; /* our window */ |
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extern Pixmap pixpat(); |
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init(name, geom) /* initialize window */ |
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char *name; |
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char *geom; |
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{ |
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WindowInfo Info; |
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OpaqueFrame mainframe; |
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char defgeom[32]; |
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Color cdef[4]; |
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int dummy; |
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if (XOpenDisplay("") == NULL) |
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error(SYSTEM, "can't open display"); |
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mainframe.bdrwidth = BORWIDTH; |
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mainframe.border = BlackPixmap; |
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mainframe.background = WhitePixmap; |
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dxsize = DisplayWidth() - 2*BORWIDTH-4; |
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dysize = DisplayHeight() - 2*BORWIDTH-26; |
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if (dxsize > dysize) |
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dxsize = dysize; |
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else |
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dysize = dxsize; |
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sprintf(defgeom, "=%dx%d+2+25", dxsize, dysize); |
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wind = XCreate("Metafile display", progname, geom, |
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defgeom, &mainframe, 64, 64); |
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if (wind == 0) |
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error(SYSTEM, "can't create window"); |
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XStoreName(wind, name); |
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XMapWindow(wind); |
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XSelectInput(wind, ButtonPressed|ExposeWindow|ExposeRegion); |
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dxsize = mainframe.width; |
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dysize = mainframe.height; |
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if (DisplayPlanes() < 2 || XGetColorCells(0, 4, 0, &dummy, pixel) == 0) { |
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pixel[0] = pixel[1] = pixel[2] = pixel[3] = BlackPixel; |
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} else { |
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cdef[0].red = cdef[0].green = cdef[0].blue = 0; |
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cdef[0].pixel = pixel[0]; |
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cdef[1].red = MAXCOLOR; cdef[1].green = cdef[1].blue = 0; |
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cdef[1].pixel = pixel[1]; |
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cdef[2].red = cdef[2].blue = 0; cdef[2].green = MAXCOLOR; |
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cdef[2].pixel = pixel[2]; |
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cdef[3].red = cdef[3].green = 0; cdef[3].blue = MAXCOLOR; |
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cdef[3].pixel = pixel[3]; |
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XStoreColors(4, cdef); |
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} |
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} |
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endpage() /* end of this graph */ |
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{ |
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XExposeEvent evnt; |
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XFeep(0); |
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for ( ; ; ) { |
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XNextEvent(&evnt); |
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if (evnt.type == ExposeWindow) { |
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dxsize = evnt.width; |
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dysize = evnt.height; |
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if (dxsize > dysize) |
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dxsize = dysize; |
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else |
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dysize = dxsize; |
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replay(0, 0, XYSIZE, XYSIZE); |
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} else if (evnt.type == ExposeRegion) { |
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replay((int)((long)XYSIZE*evnt.x/dxsize), |
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(int)((long)XYSIZE*(dysize-evnt.y-evnt.height)/dysize), |
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(int)((long)XYSIZE*(evnt.x+evnt.width)/dxsize), |
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(int)((long)XYSIZE*(dysize-evnt.y)/dysize)); |
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} else |
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break; |
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} |
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XClear(wind); |
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} |
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printstr(p) /* output a string */ |
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register PRIMITIVE *p; |
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{ |
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int fn; |
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fn = fontmap[(p->arg0 >> 2) & 017]; /* get font number */ |
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/* set font */ |
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if (font[fn].id == 0) { |
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font[fn].id = XGetFont(font[fn].name); |
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if (font[fn].id == 0) { |
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sprintf(errmsg, "can't open font \"%s\"", font[fn].name); |
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error(SYSTEM, errmsg); |
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} |
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} |
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XTextPad(wind, mapx(p->xy[XMN]), mapy(p->xy[YMN]), p->args, strlen(p->args), |
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font[fn].id, 0, 0, pixel[p->arg0&03], WhitePixel, |
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GXcopy, AllPlanes); |
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} |
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plotlseg(p) /* plot a line segment */ |
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register PRIMITIVE *p; |
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{ |
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int x1, y1, x2, y2; |
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int pp, ps, pw, ph; |
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Pixmap pm; |
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pp = (p->arg0 >> 4) & 03; |
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if (p->arg0 & 0100 && pp != 0) |
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pp += 03; |
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pm = pixpat(pp, p->arg0&03); |
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ps = WIDTH((p->arg0 >> 2) & 03); |
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pw = CONV((ps)/2, dxsize); |
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ph = CONV((ps)/2, dysize); |
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x1 = mapx(p->xy[XMN]); |
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x2 = mapx(p->xy[XMX]); |
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if (p->arg0 & 0100) { /* reverse slope */ |
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y1 = mapy(p->xy[YMX]); |
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y2 = mapy(p->xy[YMN]); |
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} else { |
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y1 = mapy(p->xy[YMN]); |
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y2 = mapy(p->xy[YMX]); |
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} |
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if (pm != BlackPixmap || pw+ph > 0) |
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paintline(x1,y1,x2-x1,y2-y1,pw,ph,pm,0L,0L,-1); |
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else |
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XLine(wind,x1,y1,x2,y2,2*pw+1,2*ph+1,BlackPixel,GXcopy,AllPlanes); |
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} |
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/* |
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* This routine paints a line with calls to fill(). The line can |
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* start and end at arbitrary points on a longer line segment. |
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*/ |
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paintline(x, y, run, rise, hrad, vrad, pm, run2, rise2, n) |
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register int x, y; |
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int run, rise; |
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int hrad, vrad; |
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Pixmap pm; |
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long run2, rise2; |
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int n; |
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{ |
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int xstep, ystep; |
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if (run >= 0) |
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xstep = 1; |
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else { |
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xstep = -1; |
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run = -run; |
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} |
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if (rise >= 0) |
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ystep = 1; |
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else { |
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ystep = -1; |
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rise = -rise; |
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} |
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if (n < 0) |
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n = max(run, rise); |
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if (run > rise) |
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while (n >= 0) |
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if (run2 >= rise2) { |
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fill(x-hrad, y-vrad, x+hrad, y+vrad, pm); |
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n--; |
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x += xstep; |
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rise2 += rise; |
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} else { |
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y += ystep; |
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run2 += run; |
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} |
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else |
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while (n >= 0) |
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if (rise2 >= run2) { |
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fill(x-hrad, y-vrad, x+hrad, y+vrad, pm); |
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n--; |
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y += ystep; |
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run2 += run; |
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} else { |
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x += xstep; |
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rise2 += rise; |
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} |
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} |
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Pixmap |
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pixpat(pp, pc) /* return Pixmap for pattern number */ |
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int pp, pc; |
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{ |
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static int curpat = -1; /* current pattern */ |
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static int curcol = -1; /* current color */ |
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static Pixmap curpix = 0; /* current Pixmap id */ |
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short bitval[16]; |
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Bitmap bm; |
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register int i, j; |
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if (pp == curpat && pc == curcol) /* already set */ |
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return(curpix); |
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if (pp == 0 && pc == 0) /* all black */ |
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return(BlackPixmap); |
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if (curpix != 0) /* free old Pixmap */ |
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XFreePixmap(curpix); |
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if (pp == 0) /* constant Pixmap */ |
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curpix = XMakeTile(pixel[pc]); |
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else { |
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#if (PATSIZE != 16) |
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error(SYSTEM, "bad code segment in pixpat"); |
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#else |
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for (i = 0; i < 16; i++) { |
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bitval[15-i] = 0; |
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for (j = 0; j < 16; j++) |
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bitval[15-i] |= ((pattern[pp][i>>3][j] >> (i&07)) & 01) << j; |
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} |
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bm = XStoreBitmap(16, 16, bitval); |
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curpix = XMakePixmap(bm, pixel[pc], WhitePixel); |
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XFreeBitmap(bm); |
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#endif |
| 300 |
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} |
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curpat = pp; |
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curcol = pc; |
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return(curpix); |
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} |
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fillrect(p) /* fill a rectangle */ |
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register PRIMITIVE *p; |
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{ |
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int left, right, top, bottom; |
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left = mapx(p->xy[XMN]); |
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bottom = mapy(p->xy[YMN]); |
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right = mapx(p->xy[XMX]); |
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top = mapy(p->xy[YMX]); |
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fill(left, top, right, bottom, pixpat(pati[(p->arg0>>2)&03],p->arg0&03)); |
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} |
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#ifdef nyet |
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filltri(p) /* fill a triangle */ |
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register PRIMITIVE *p; |
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{ |
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Vertex v[4]; |
| 335 |
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int left, right, top, bottom; |
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left = mapx(p->xy[XMN]); |
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right = mapx(p->xy[XMX]); |
| 339 |
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top = mapy(p->xy[YMX]); |
| 340 |
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bottom = mapy(p->xy[YMN]); |
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| 342 |
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switch (p->arg0 & 060) { |
| 343 |
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case 0: /* right (& down) */ |
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v[0].x = left; v[0].y = bottom; |
| 345 |
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v[1].x = right; v[1].y = bottom; |
| 346 |
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v[2].x = right; v[2].y = top; |
| 347 |
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break; |
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case 020: /* up */ |
| 349 |
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v[0].x = right; v[0].y = bottom; |
| 350 |
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v[1].x = right; v[1].y = top; |
| 351 |
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v[2].x = left; v[2].y = top; |
| 352 |
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break; |
| 353 |
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case 040: /* left */ |
| 354 |
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v[0].x = right; v[0].y = top; |
| 355 |
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v[1].x = left; v[1].y = top; |
| 356 |
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v[2].x = left; v[2].y = bottom; |
| 357 |
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break; |
| 358 |
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case 060: /* down */ |
| 359 |
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v[0].x = left; v[0].y = top; |
| 360 |
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v[1].x = left; v[1].y = bottom; |
| 361 |
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v[2].x = right; v[2].y = bottom; |
| 362 |
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break; |
| 363 |
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} |
| 364 |
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v[3].x = v[0].x; v[3].y = v[0].y; |
| 365 |
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v[0].flags = v[1].flags = v[2].flags = v[3].flags = 0; |
| 366 |
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| 367 |
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XDrawTiled(wind, v, 4, pixpat(pati[(p->arg0>>2)&03],p->arg0&03), |
| 368 |
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GXcopy, AllPlanes); |
| 369 |
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| 370 |
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} |
| 371 |
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| 372 |
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| 373 |
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| 374 |
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xform(xp, yp, p) /* transform a point according to p */ |
| 375 |
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| 376 |
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register int *xp, *yp; |
| 377 |
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register PRIMITIVE *p; |
| 378 |
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| 379 |
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{ |
| 380 |
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int x, y; |
| 381 |
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| 382 |
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switch (p->arg0 & 060) { |
| 383 |
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case 0: /* right */ |
| 384 |
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x = *xp; |
| 385 |
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y = *yp; |
| 386 |
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break; |
| 387 |
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case 020: /* up */ |
| 388 |
|
|
x = (XYSIZE-1) - *yp; |
| 389 |
|
|
y = *xp; |
| 390 |
|
|
break; |
| 391 |
|
|
case 040: /* left */ |
| 392 |
|
|
x = (XYSIZE-1) - *xp; |
| 393 |
|
|
y = (XYSIZE-1) - *yp; |
| 394 |
|
|
break; |
| 395 |
|
|
case 060: /* down */ |
| 396 |
|
|
x = *yp; |
| 397 |
|
|
y = (XYSIZE-1) - *xp; |
| 398 |
|
|
break; |
| 399 |
|
|
} |
| 400 |
|
|
|
| 401 |
|
|
*xp = CONV(x, p->xy[XMX] - p->xy[XMN]) + p->xy[XMN]; |
| 402 |
|
|
*yp = CONV(y, p->xy[YMX] - p->xy[YMN]) + p->xy[YMN]; |
| 403 |
|
|
|
| 404 |
|
|
} |
| 405 |
|
|
|
| 406 |
|
|
|
| 407 |
|
|
|
| 408 |
|
|
fillpoly(p) /* fill a polygon */ |
| 409 |
|
|
|
| 410 |
|
|
register PRIMITIVE *p; |
| 411 |
|
|
|
| 412 |
|
|
{ |
| 413 |
|
|
int x0, y0, curx, cury; |
| 414 |
|
|
PolyHandle polyh; |
| 415 |
|
|
char *nextscan(); |
| 416 |
|
|
register char *s; |
| 417 |
|
|
|
| 418 |
|
|
polyh = OpenPoly(); |
| 419 |
|
|
|
| 420 |
|
|
if ((s = nextscan(nextscan(p->args, "%d", &x0), "%d", &y0)) == NULL) |
| 421 |
|
|
error(USER, "illegal polygon spec in fillpoly"); |
| 422 |
|
|
|
| 423 |
|
|
xform(&x0, &y0, p); |
| 424 |
|
|
x0 = mapx(x0); y0 = mapy(y0); |
| 425 |
|
|
MoveTo(x0, y0); |
| 426 |
|
|
|
| 427 |
|
|
while ((s = nextscan(nextscan(s, "%d", &curx), "%d", &cury)) != NULL) { |
| 428 |
|
|
xform(&curx, &cury, p); |
| 429 |
|
|
curx = mapx(curx); cury = mapy(cury); |
| 430 |
|
|
LineTo(curx, cury); |
| 431 |
|
|
} |
| 432 |
|
|
LineTo(x0, y0); |
| 433 |
|
|
|
| 434 |
|
|
ClosePoly(); |
| 435 |
|
|
|
| 436 |
|
|
if (p->arg0 & 0100) { /* draw border */ |
| 437 |
|
|
if (curpat != 0) { |
| 438 |
|
|
PenPat(macpat[0]); |
| 439 |
|
|
curpat = 0; |
| 440 |
|
|
} |
| 441 |
|
|
if (curpsiz != 1) { |
| 442 |
|
|
PenSize(1, 1); |
| 443 |
|
|
curpsiz = 1; |
| 444 |
|
|
} |
| 445 |
|
|
if (curpmod != patOr) { |
| 446 |
|
|
PenMode(patOr); |
| 447 |
|
|
curpmod = patOr; |
| 448 |
|
|
} |
| 449 |
|
|
FramePoly(polyh); |
| 450 |
|
|
} |
| 451 |
|
|
|
| 452 |
|
|
setfill(p->arg0 & 077); |
| 453 |
|
|
PaintPoly(polyh); |
| 454 |
|
|
KillPoly(polyh); |
| 455 |
|
|
xpos = -1; |
| 456 |
|
|
ypos = -1; |
| 457 |
|
|
|
| 458 |
|
|
} |
| 459 |
|
|
|
| 460 |
|
|
#else |
| 461 |
|
|
|
| 462 |
|
|
filltri() {} |
| 463 |
|
|
fillpoly() {} |
| 464 |
|
|
|
| 465 |
|
|
#endif |
