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- #include <stdio.h>
- #include "vogl.h"
- #include "vodevice.h"
-
- extern char *getenv();
-
- struct vdev vdevice;
-
- static FILE *fp = stdout;
-
- static int allocated = 0;
-
- void gexit();
-
- /* device-independent function routines */
-
- /*
- * voutput
- *
- * redirect output - only for postscript, hpgl (this is not a feature)
- */
- void
- voutput(path)
- char *path;
- {
- char buf[128];
-
- if ((fp = fopen(path, "w")) == (FILE *)NULL) {
- sprintf(buf, "voutput: couldn't open %s", path);
- verror(buf);
- }
- }
-
- /*
- * _voutfile
- *
- * return a pointer to the current output file - designed for internal
- * use only.
- */
- FILE *
- _voutfile()
- {
- return(fp);
- }
-
- /*
- * verror
- *
- * print an error on the graphics device, and then exit. Only called
- * for fatal errors. We assume that stderr is always there.
- *
- */
- void
- verror(str)
- char *str;
- {
- if (vdevice.initialised)
- gexit();
-
- fprintf(stderr, "%s\n", str);
- exit(1);
- }
-
- /*
- * gexit
- *
- * exit the vogl/vogle system
- *
- */
- void
- gexit()
- {
- if (!vdevice.initialised)
- verror("gexit: vogl not initialised");
-
- (*vdevice.dev.Vexit)();
-
- vdevice.devname = (char *)NULL;
- vdevice.initialised = 0;
- fp = stdout;
- }
-
- /*
- * getdev
- *
- * get the appropriate device table structure
- */
- static void
- getdev(device)
- char *device;
- {
- #ifdef MAC
- if (strncmp(device, "MacII", 5) == 0)
- _MacII_devcpy();
- else
- #endif
- #ifdef SUN
- if (strncmp(device, "sun", 3) == 0)
- _SUN_devcpy();
- else
- #endif
- #ifdef X11
- if (strncmp(device, "X11", 3) == 0)
- _X11_devcpy();
- else
- #endif
- #ifdef DECX11
- if (strncmp(device, "decX11", 6) == 0)
- _DECX11_devcpy();
- else
- #endif
- #ifdef NeXT
- if (strncmp(device, "NeXT", 4) == 0)
- _NeXT_devcpy();
- else
- #endif
- #ifdef POSTSCRIPT
- if (strncmp(device, "postscript", 10) == 0) {
- _PS_devcpy();
- } else
- if (strncmp(device, "ppostscript", 11) == 0) {
- _PSP_devcpy();
- } else
- #endif
- #ifdef HPGL
- if (strncmp(device, "hpgla1", 6) == 0)
- _HPGL_A1_devcpy();
- else if (strncmp(device, "hpgla3", 6) == 0)
- _HPGL_A3_devcpy();
- else if (strncmp(device, "hpgla4", 6) == 0)
- _HPGL_A4_devcpy();
- else if (strncmp(device, "hpgla2", 6) == 0 || strncmp(device, "hpgl", 4) == 0)
- _HPGL_A2_devcpy();
- else
- #endif
- #ifdef DXY
- if (strncmp(device, "dxy", 3) == 0)
- _DXY_devcpy();
- else
- #endif
- #ifdef TEK
- if (strncmp(device, "tek", 3) == 0)
- _TEK_devcpy();
- else
- #endif
- #ifdef HERCULES
- if (strncmp(device, "hercules", 8) == 0)
- _hgc_devcpy();
- else
- #endif
- #ifdef CGA
- if (strncmp(device, "cga", 3) == 0)
- _cga_devcpy();
- else
- #endif
- #ifdef EGA
- if (strncmp(device, "ega", 3) == 0)
- _ega_devcpy();
- else
- #endif
- #ifdef VGA
- if (strncmp(device, "vga", 3) == 0)
- _vga_devcpy();
- else
- #endif
- #ifdef SIGMA
- if (strncmp(device, "sigma", 5) == 0)
- _sigma_devcpy();
- else
- #endif
- {
- if (*device == 0)
- fprintf(stderr, "vogl: expected the enviroment variable VDEVICE to be set to the desired device.\n");
- else
- fprintf(stderr, "vogl: %s is an invalid device type\n", device);
- fprintf(stderr, "The devices compiled into this library are:\n");
- #ifdef MAC
- fprintf(stderr, "MacII\n");
- #endif
- #ifdef SUN
- fprintf(stderr, "sun\n");
- #endif
- #ifdef X11
- fprintf(stderr, "X11\n");
- #endif
- #ifdef DECX11
- fprintf(stderr, "decX11\n");
- #endif
- #ifdef NeXT
- fprintf(stderr, "NeXT\n");
- #endif
- #ifdef POSTSCRIPT
- fprintf(stderr, "postscript\n");
- fprintf(stderr, "ppostscript\n");
- #endif
- #ifdef HPGL
- fprintf(stderr, "hpgla1\n");
- fprintf(stderr, "hpgla2 (or hpgl)\n");
- fprintf(stderr, "hpgla3\n");
- fprintf(stderr, "hpgla4\n");
- #endif
- #ifdef DXY
- fprintf(stderr, "dxy\n");
- #endif
- #ifdef TEK
- fprintf(stderr, "tek\n");
- #endif
- #ifdef HERCULES
- fprintf(stderr, "hercules\n");
- #endif
- #ifdef CGA
- fprintf(stderr, "cga\n");
- #endif
- #ifdef EGA
- fprintf(stderr, "ega\n");
- #endif
- #ifdef VGA
- fprintf(stderr, "vga\n");
- #endif
- #ifdef SIGMA
- fprintf(stderr, "sigma\n");
- #endif
- exit(1);
- }
- }
-
- /*
- * vinit
- *
- * Just set the device name. ginit and winopen are basically
- * the same as the VOGLE the vinit function.
- *
- */
- void
- vinit(device)
- char *device;
- {
- vdevice.devname = device;
- }
-
- /*
- * winopen
- *
- * use the more modern winopen call (this really calls ginit),
- * we use the title if we can
- */
- long
- winopen(title)
- char *title;
- {
- vdevice.wintitle = title;
-
- ginit();
-
- return(1L);
- }
-
- /*
- * ginit
- *
- * by default we check the environment variable, if nothing
- * is set we use the value passed to us by the vinit call.
- */
- void
- ginit()
- {
- char *dev;
- int i;
-
- #ifdef MAC
- if (vdevice.devname == (char *)NULL) {
- dev = "MacII";
- if (dev == (char *)NULL)
- getdev("");
- else
- getdev(dev);
- } else
- getdev(vdevice.devname);
- #else
- if (vdevice.devname == (char *)NULL) {
- if ((dev = getenv("VDEVICE")) == (char *)NULL)
- getdev("");
- else
- getdev(dev);
- } else
- getdev(vdevice.devname);
- #endif
-
- if (vdevice.initialised)
- gexit();
-
- if (!allocated) {
- allocated = 1;
- vdevice.transmat = (Mstack *)vallocate(sizeof(Mstack));
- vdevice.transmat->back = (Mstack *)NULL;
- vdevice.attr = (Astack *)vallocate(sizeof(Astack));
- vdevice.attr->back = (Astack *)NULL;
- vdevice.viewport = (Vstack *)vallocate(sizeof(Vstack));
- vdevice.viewport->back = (Vstack *)NULL;
- vdevice.bases = (Matrix *)vallocate(sizeof(Matrix) * 10);
- vdevice.enabled = (char *)vallocate(MAXDEVTABSIZE);
- }
-
- for (i = 0; i < MAXDEVTABSIZE; i++)
- vdevice.enabled[i] = 0;
-
- vdevice.alreadyread = vdevice.data = vdevice.devno = 0;
- vdevice.kbdmode = vdevice.mouseevents = vdevice.kbdevents = 0;
-
- vdevice.clipoff = 0;
- vdevice.cpW[V_W] = 1.0; /* never changes */
-
- vdevice.maxfontnum = 2;
-
- vdevice.attr->a.fontnum = 0;
- vdevice.attr->a.mode = 0;
- vdevice.attr->a.backface = 0;
-
- if ((*vdevice.dev.Vinit)()) {
- vdevice.initialised = 1;
-
- viewport((Screencoord)0, (Screencoord)vdevice.sizeSx,
- (Screencoord)0, (Screencoord)vdevice.sizeSy);
-
- ortho2(0.0, (Coord)vdevice.sizeSx, 0.0, (Coord)vdevice.sizeSy);
-
- /*
- identmatrix(vdevice.transmat->m);
- _mapmsave(vdevice.transmat->m);
- */
-
- move(0.0, 0.0, 0.0);
-
- font(0); /* set up default font */
-
- vdevice.inobject = 0;
- vdevice.inpolygon = 0;
- } else {
- fprintf(stderr, "vogl: error while setting up device\n");
- exit(1);
- }
-
- vdevice.alreadyread = 0;
- vdevice.mouseevents = 0;
- vdevice.kbdevents = 0;
- vdevice.kbdmode = 0;
-
- vdevice.concave = 0;
- }
-
- /*
- * gconfig
- *
- * thankfully a noop.
- */
- void
- gconfig()
- {
- }
-
- /*
- * vnewdev
- *
- * reinitialize vogl to use a new device but don't change any
- * global attributes like the window and viewport settings.
- */
- void
- vnewdev(device)
- char *device;
- {
- if (!vdevice.initialised)
- verror("vnewdev: vogl not initialised\n");
-
- pushviewport();
-
- (*vdevice.dev.Vexit)();
-
- vdevice.initialised = 0;
-
- getdev(device);
-
- (*vdevice.dev.Vinit)();
-
- vdevice.initialised = 1;
-
- /*
- * Need to update font for this device...
- */
- font(vdevice.attr->a.fontnum);
-
-
- popviewport();
- }
-
- /*
- * vgetdev
- *
- * Returns the name of the current vogl device
- * in the buffer buf. Also returns a pointer to
- * the start of buf.
- */
- char *
- vgetdev(buf)
- char *buf;
- {
- /*
- * Note no exit if not initialized here - so that gexit
- * can be called before printing the name.
- */
- if (vdevice.dev.devname)
- strcpy(buf, vdevice.dev.devname);
- else
- strcpy(buf, "(no device)");
-
- return(&buf[0]);
- }
-
- /*
- * getvaluator
- *
- * similar to the VOGLE locator only it returns either x (MOUSEX) or y (MOUSEY).
- */
- long
- getvaluator(dev)
- Device dev;
- {
- int a, b, c;
-
- if (!vdevice.initialised)
- verror("getvaluator: vogl not initialised");
-
- c = (*vdevice.dev.Vlocator)(&a, &b);
-
- if (c != -1) {
- if (dev == MOUSEX)
- return((long)a);
- else
- return((long)b);
- }
-
- return(-1);
- }
-
- /*
- * getbutton
- *
- * returns the up (or down) state of a button. 1 means down, 0 up,
- * -1 invalid.
- */
- Boolean
- getbutton(dev)
- Device dev;
- {
- int a, b, c;
-
- if (dev < 256) {
- c = (*vdevice.dev.Vcheckkey)();
- if (c >= 'a' && c <= 'z')
- c = c - 'a' + 'A';
- if (c == dev)
- return(1);
- return(0);
- } else if (dev < 261) {
- c = (*vdevice.dev.Vlocator)(&a, &b);
- if (c & 0x01 && dev == MOUSE3)
- return(1);
- if (c & 0x02 && dev == MOUSE2)
- return(1);
- if (c & 0x04 && dev == MOUSE1)
- return(1);
- return(0);
- }
-
- return(-1);
- }
-
- /*
- * clear
- *
- * clears the screen to the current colour, excepting devices
- * like a laser printer where it flushes the page.
- *
- */
- void
- clear()
- {
- Token *tok;
-
- if (!vdevice.initialised)
- verror("clear: vogl not initialised");
-
- if (vdevice.inobject) {
- tok = newtokens(1);
- tok->i = CLEAR;
-
- return;
- }
-
- (*vdevice.dev.Vclear)();
- }
-
- /*
- * colorf
- *
- * set the current colour to colour index given by
- * the rounded value of f.
- *
- */
- void
- colorf(f)
- double f;
- {
- color((int)(f + 0.5));
- }
-
- /*
- * color
- *
- * set the current colour to colour index number i.
- *
- */
- void
- color(i)
- int i;
- {
- Token *tok;
-
- if (!vdevice.initialised)
- verror("color: vogl not initialised");
-
- if (vdevice.inobject) {
- tok = newtokens(2);
-
- tok[0].i = COLOR;
- tok[1].i = i;
- return;
- }
-
- vdevice.attr->a.color = i;
- (*vdevice.dev.Vcolor)(i);
- }
-
- /*
- * mapcolor
- *
- * set the color of index i.
- */
- void
- mapcolor(i, r, g, b)
- Colorindex i;
- short r, g, b;
- {
- Token *tok;
-
- if (!vdevice.initialised)
- verror("mapcolor: vogl not initialised");
-
- if (vdevice.inobject) {
- tok = newtokens(5);
-
- tok[0].i = MAPCOLOR;
- tok[1].i = i;
- tok[2].i = r;
- tok[3].i = g;
- tok[4].i = b;
-
- return;
- }
-
- (*vdevice.dev.Vmapcolor)(i, r, g, b);
- }
-
- /*
- * getplanes
- *
- * Returns the number if bit planes on a device.
- */
- long
- getplanes()
- {
- if (!vdevice.initialised)
- verror("getdepth: vogl not initialised\n");
-
- return((long)vdevice.depth);
- }
-
- /*
- * reshapeviewport
- * - does nothing
- */
- void
- reshapeviewport()
- {
- }
-
- /*
- * winconstraints
- * - does nothing
- */
- void
- winconstraints()
- {
- }
-
- /*
- * keepaspect
- * - does nothing
- */
- void
- keepaspect()
- {
- }
-
- /*
- * shademodel
- * - does nothing
- */
- void
- shademodel(model)
- long model;
- {
- }
-
- /*
- * getgdesc
- *
- * Inquire about some stuff....
- */
- long
- getgdesc(inq)
- long inq;
- {
- /*
- * How can we know before the device is inited??
- */
-
- switch (inq) {
- case GD_XPMAX:
- if (vdevice.initialised)
- return((long)vdevice.sizeSx);
- else
- return(500L); /* A bullshit number */
- case GD_YPMAX:
- if (vdevice.initialised)
- return((long)vdevice.sizeSy);
- else
- return(500L);
- default:
- return(-1L);
- }
- }
-