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Amiga Format CD 24
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Amiga Format AFCD24 (Feb 1998, Issue 108).iso
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-seriously_amiga-
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shareware
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programming
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c
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amivogl-mdev
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src
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drivers.c
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C/C++ Source or Header
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1998-01-12
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15KB
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731 lines
#include <stdio.h>
#include "vogl.h"
#include "vodevice.h"
/* ---------------------------------------------------------------------
* Prototypes:
*/
#ifdef __PROTOTYPE__
static void getdev(char *); /* drivers.c */
#else
static void getdev(); /* drivers.c */
#endif
/* ---------------------------------------------------------------------
* Driver Prototypes:
*/
#ifdef __PROTOTYPE__
#ifdef AMIGA
void _AMIGA_devcpy(void); /* amiga.c */
#endif
#ifdef apollo
int _APOLLO_devcpy(void); /* apollo.c */
#endif
#ifdef CGA
int _cga_devcpy(void); /* cga.c */
#endif
#ifdef DECX11
int _DECX11_devcpy(void); /* decX11.c */
#endif
#ifdef DXY
int _DXY_devcpy(void); /* hpdxy.c */
#endif
#ifdef EGA
int _ega_devcpy(void); /* ega.c */
#endif
#ifdef GRX
int _grx_devcpy(void); /* grx.c */
#endif
#ifdef HERCULES
#endif
#ifdef HGC
int _hgc_devcpy(void); /* hgc.c */
#endif
#ifdef HPGL
int _HPGL_A1_devcpy(void); /* hpdxy.c */
int _HPGL_A2_devcpy(void); /* hpdxy.c */
int _HPGL_A3_devcpy(void); /* hpdxy.c */
int _HPGL_A4_devcpy(void); /* hpdxy.c */
#endif
#ifdef NeXT
int _NeXT_devcpy(void); /* NeXT.c */
#endif
#ifdef POSTSCRIPT
int _CPS_devcpy(void); /* ps.c */
int _PS_devcpy(void); /* ps.c */
int _PSP_devcpy(void); /* ps.c */
int _PCPS_devcpy(void); /* ps.c */
int _LASER_devcpy(void); /* ps.c */
#endif
#ifdef SIGMA
int _sigma_devcpy(void); /* sigma.c */
#endif
#ifdef SUN
int _SUN_devcpy(void); /* sun.c */
#endif
#ifdef TEK
int _TEK_devcpy(void); /* tek.c */
#endif
#ifdef VGA
int _vga_devcpy(void); /* vga.c */
#endif
#ifdef X11
int _X11_devcpy(void); /* X11.c */
#endif
#endif /* __PROTOTYPE__ */
/* ---------------------------------------------------------------------
* Local Variables:
*/
static FILE *fp = stdout;
static int allocated = 0;
struct vdev vdevice;
/* --------------------------------------------------------------------- */
/* device-independent function routines */
/*
* voutput
*
* redirect output - only for postscript, hpgl (this is not a feature)
*/
void voutput(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(void)
{
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(char *str)
{
if (vdevice.initialised)
gexit();
fprintf(stderr, "%s\n", str);
exit(1);
}
/* ------------------------------------------------------------------------ */
/*
* gexit
*
* exit the vogl/vogle system
*
*/
void gexit(void)
{
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(char *device)
{
#ifdef AMIGA
if (strncmp(device,"amiga",5) == 0) _AMIGA_devcpy();
else if (strncmp(device,"AMIGA",5) == 0) _AMIGA_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 || *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 SUN
fprintf(stderr, "sun\n");
#endif
#ifdef AMIGA
fprintf(stderr,"amiga\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(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(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(void)
{
char *dev= NULL;
int i;
if (vdevice.devname == (char *)NULL) {
if ((dev = getenv("VDEVICE")) == (char *)NULL) getdev("");
else getdev(dev);
}
else getdev(vdevice.devname);
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((short) 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(void)
{
}
/* ------------------------------------------------------------------------ */
/*
* vnewdev
*
* reinitialize vogl to use a new device but don't change any
* global attributes like the window and viewport settings.
*/
void vnewdev(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((short) 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(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(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(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(void)
{
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(float f)
{
color((int)(f + 0.5));
}
/* ------------------------------------------------------------------------ */
/*
* color
*
* set the current colour to colour index number i.
*
*/
void color(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(
Colorindex i,
short r,
short g,
short 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)((int) i, (int) r, (int) g, (int) b);
}
/* ------------------------------------------------------------------------ */
/*
* getplanes
*
* Returns the number if bit planes on a device.
*/
long getplanes(void)
{
if (!vdevice.initialised)
verror("getdepth: vogl not initialised\n");
return((long)vdevice.depth);
}
/* ------------------------------------------------------------------------ */
/*
* reshapeviewport
* - does nothing
*/
void reshapeviewport(void)
{
}
/* ------------------------------------------------------------------------ */
/*
* winconstraints
* - does nothing
*/
void winconstraints(void)
{
}
/* ------------------------------------------------------------------------ */
/*
* keepaspect
* - does nothing
*/
void keepaspect(void)
{
}
/* ------------------------------------------------------------------------ */
/*
* shademodel
* - does nothing
*/
void shademodel(long model)
{
}
/* ------------------------------------------------------------------------ */
/*
* getgdesc
*
* Inquire about some stuff....
*/
long getgdesc(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;
}
/* return -1L; statement never reached */
}
/* ------------------------------------------------------------------------ */