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/* Hello, Emacs, this is -*-C-*- */

/* GNUPLOT - HP26.trm */

/*[

* Permission to use, copy, and distribute this software and its

* documentation for any purpose with or without fee is hereby granted,

* provided that the above copyright notice appear in all copies and

* that both that copyright notice and this permission notice appear

* in supporting documentation.

* Permission to modify the software is granted, but not the right to

* distribute the complete modified source code. Modifications are to

* be distributed as patches to the released version. Permission to

* distribute binaries produced by compiling modified sources is granted,

* provided you

* 1. distribute the corresponding source modifications from the

* released version in the form of a patch file along with the binaries,

* 2. add special version identification to distinguish your version

* in addition to the base release version number,

* 3. provide your name and address as the primary contact for the

* support of your modified version, and

* 4. retain our contact information in regard to use of the base

* software.

* Permission to distribute the released version of the source code along

* with corresponding source modifications in the form of a patch file is

* granted with same provisions 2 through 4 for binary distributions.

* This software is provided "as is" without express or implied warranty

* to the extent permitted by applicable law.

]*/

* This file is included by ../term.c.

* This terminal driver supports:

* HP2623A

* AUTHORS

* luecken@udel.edu (Bruce Lueckenhoff)

* hplvlch!ch (Chuck Heller)

* send your comments or suggestions to (gnuplot-info@lists.sourceforge.net).

* adapted to the new terminal layout by Stefan Bodewig (Dec. 1995)

#include "driver.h"

#ifdef TERM_REGISTER

register_term(hp2623a)

#endif

#ifdef TERM_PROTO

TERM_PUBLIC void HP26_vector(unsigned int x, unsigned int y);

TERM_PUBLIC void HP26_move(unsigned int x, unsigned int y);

TERM_PUBLIC void HP26_init(void);

TERM_PUBLIC void HP26_graphics(void);

TERM_PUBLIC void HP26_text(void);

TERM_PUBLIC void HP26_reset(void);

TERM_PUBLIC int HP26_text_angle(float ang);

TERM_PUBLIC void HP26_put_text(unsigned int x, unsigned int y, const char *str);

TERM_PUBLIC void HP26_linetype(int linetype);

TERM_PUBLIC void HP26_line_and_point(unsigned int x, unsigned int y, int number);

#define HP26_XMAX 512

#define HP26_YMAX 390

/* Use a size 1 character, or a 7 x 10 grid. */

#define HP26_VCHAR 10

#define HP26_HCHAR 7

#define HP26_VTIC 5

#define HP26_HTIC 5

#endif /* TERM_PROTO */

#ifndef TERM_PROTO_ONLY

#ifdef TERM_BODY

#define HP26_XLAST (HP26_XMAX - 1)

#define HP26_YLAST (HP26_XMAX - 1)

static void HP26_do_point(unsigned int x, unsigned int y, int number);

static struct _HP26_Buffer_Node *BN_create(int index, int size, int linetype);

static void BN_delete(struct _HP26_Buffer_Node * the_node);

static int HP26_flush(struct _HP26_Buffer_Node * the_buff);

static void HP26_handle_overflow(void);

typedef struct _HP26_Buffer_Node {

int index;

int size;

int next;

int linetype;

int *x;

int *y;

TBOOLEAN *isa_move;

} HP26_Buffer_Node;

/* constructor method */

static HP26_Buffer_Node *

BN_create(int index, int size, int linetype)

{

HP26_Buffer_Node *the_node;

the_node = (HP26_Buffer_Node *) gp_alloc(sizeof(HP26_Buffer_Node), "HP26");

if (the_node) {

the_node->index = index;

the_node->linetype = linetype;

the_node->size = size;

the_node->next = 0;

the_node->x = (int *) gp_alloc(size*sizeof(int), "HP26");

the_node->y = (int *) gp_alloc(size*sizeof(int), "HP26");

the_node->isa_move = (TBOOLEAN *) gp_alloc(size*sizeof(TBOOLEAN), "HP26");

if (the_node->x == NULL || the_node->y == NULL || the_node->isa_move == NULL)

return (NULL);

}

memset(the_node->isa_move, 0, size*sizeof(TBOOLEAN));

return (the_node);

}

/* destructor method */

static void

BN_delete(HP26_Buffer_Node *the_node)

{

free(the_node->x);

free(the_node->y);

free(the_node->isa_move);

free(the_node);

}

/* 2 for border and axes + 9 for plots + 1 for dots */

#define HP26_gnu_map_size 12

static HP26_Buffer_Node *HP26_gnu_map[HP26_gnu_map_size];

static HP26_Buffer_Node *HP26_buff;

static int HP26_pen_x;

static int HP26_pen_y;

static int HP26_angle;

static int HP26_cursor_x;

static int HP26_cursor_y;

static TBOOLEAN HP26_in_text;

static int HP26_linetype_current;

static int HP26_reduction_int;

static int HP26_reduction_slope;

static int HP26_overflows;

static int HP26_nop_move;

static int HP26_nop_vect;

static int HP26_nop_line;

/* linetype stuff */

#define SOLID 1

#define USER 2

#define LINE3 3

#define LINE4 4

#define LINE5 5

#define LINE6 6

#define DOTS 7

#define LINE8 8

#define LINE9 9

#define LINE10 10

#define POINT 11

#define swap(a, b) a ^= b; b ^= a; a ^= b;

static char HP26_bin_short_table[32] =

{

'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>',

'?', ' ', '!', '"', '#', '$', '%', '&', '\'', '(', ')', '*', '+', ',', '-',

'.', '/'

};

/* encodes an integer (assumed to be in range) into

binary short incremental format (j)*/

#define short_encode(n) (HP26_bin_short_table[n+16])

/* tells whether a given delta_x,delta_y pair can be expressed in

binary short incremental format */

#define qualified(dx,dy) ((dx>-17)&&(dy>-17)&&(dx<16)&&(dy<16))

static char HP26_bin_table[32] =

{

' ', '!', '"', '#', '$', '%', '&', '\'', '(', ')', '*', '+', ',', '-',

'.', '/', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<',

'=', '>', '?'

};

/* returns the high byte of integer n in binary absolute format (i) */

#define bin_encode_hi(n) (HP26_bin_table[n>>5])

/* returns the low byte of integer n in binary absolute format (i) */

#define bin_encode_lo(n) (HP26_bin_table[n & 31])

/* the guts of the program

-- first checks if any work need be done and, failing that, returns

immediately

-- tries to compress the vector stream

-- goes through the buffer, using binary short incremental (2 bytes/point)

as much as possible, even if must output two pairs to express one vector

(it's no more expensive, and will hopefully damp any excessive switching

back and forth between the two formats)

if can't use binary short incremental, use binary

absolute(4 bytes/point)

-- finally, resets the HP26_next pointer to zero */

static int

HP26_flush(HP26_Buffer_Node *the_buff)

{

int i, delta_x, delta_y, half_dx, half_dy;

int *buff_x, *buff_y;

TBOOLEAN *isa_move;

TBOOLEAN bin_short;

if (the_buff->next == 0)

return (FALSE);

/* init pointers for easy access */

buff_x = the_buff->x;

buff_y = the_buff->y;

isa_move = the_buff->isa_move;

if (HP26_in_text) {

fputs("\033*dT", gpoutfile);

HP26_in_text = FALSE;

}

if (HP26_linetype_current != the_buff->linetype

&& (the_buff->next > 1 || !isa_move[0])) {

fprintf(gpoutfile, "\033*m%dB", the_buff->linetype);

HP26_linetype_current = the_buff->linetype;

}

/* start escape sequence */

fputs("\033*p", gpoutfile);

/* initialize the state: binary short incremental or binary absolute */

delta_x = buff_x[0] - HP26_pen_x;

delta_y = buff_y[0] - HP26_pen_y;

if (qualified(delta_x, delta_y)) {

fputc('j', gpoutfile);

bin_short = TRUE;

} else {

fputc('i', gpoutfile);

bin_short = FALSE;

}

/* now work through the list */

for (i = 0; i < the_buff->next; i++) {

if (i > 0) {

delta_x = buff_x[i] - buff_x[i - 1];

delta_y = buff_y[i] - buff_y[i - 1];

}

if ((delta_x == 0) && (delta_y == 0)) {

if (i > 0 && !isa_move[i - 1] && !isa_move[i]) {

/* allow null vectors only when drawing dots */

HP26_nop_vect++;

continue;

} else if (isa_move[i]) {

/* a null move */

HP26_nop_move++;

continue;

}

} else if (i > 0

&& i + 1 < the_buff->next

&& isa_move[i]

&& isa_move[i + 1]) {

/* consecutive moves are condensed into one */

HP26_nop_move++;

continue;

} else if (!qualified(delta_x, delta_y)

&& i > 0

&& i + 2 < the_buff->next

&& isa_move[i]

&& !isa_move[i + 1]

&& isa_move[i + 2]

&& qualified(buff_x[i + 1] - buff_x[i - 1], buff_y[i + 1] - buff_y[i - 1])) {

swap(buff_x[i], buff_x[i + 1]);

swap(buff_y[i], buff_y[i + 1]);

/* set up new delta_x & delta_y */

delta_x = buff_x[i] - buff_x[i - 1];

delta_y = buff_y[i] - buff_y[i - 1];

}

if (qualified(delta_x, delta_y)) {

if (!bin_short) {

fputc('j', gpoutfile);

bin_short = TRUE;

}

if (isa_move[i])

fputc('a', gpoutfile);

fputc(short_encode(delta_x), gpoutfile);

fputc(short_encode(delta_y), gpoutfile);

} else {

half_dx = (delta_x + (delta_x > 0 ? 1 : -1)) / 2;

half_dy = (delta_y + (delta_y > 0 ? 1 : -1)) / 2;

if (bin_short && qualified(half_dx, half_dy)) {

if (isa_move[i])

fputc('a', gpoutfile);

fputc(short_encode(half_dx), gpoutfile);

fputc(short_encode(half_dy), gpoutfile);

if (isa_move[i])

fputc('a', gpoutfile);

fputc(short_encode(delta_x - half_dx), gpoutfile);

fputc(short_encode(delta_y - half_dy), gpoutfile);

} else {

if (bin_short) {

bin_short = FALSE;

fputc('i', gpoutfile);

}

if (isa_move[i])

fputc('a', gpoutfile);

fputc(bin_encode_hi(buff_x[i]), gpoutfile);

fputc(bin_encode_lo(buff_x[i]), gpoutfile);

fputc(bin_encode_hi(buff_y[i]), gpoutfile);

fputc(bin_encode_lo(buff_y[i]), gpoutfile);

}

} /* end for.. */

/* the term doesn't seem to mind leaving this out */

/* finish the escape sequence */

fputc('Z', gpoutfile);

/* set these for next time */

HP26_pen_x = buff_x[the_buff->next - 1];

HP26_pen_y = buff_y[the_buff->next - 1];

the_buff->next = 0;

return (TRUE);

}

static void

HP26_handle_overflow()

{

HP26_Buffer_Node *bigger, *old;

int x, y;

x = (HP26_buff->x)[HP26_buff->next - 1];

y = (HP26_buff->y)[HP26_buff->next - 1];

HP26_flush(HP26_buff);

bigger = BN_create(HP26_buff->index, HP26_buff->size * 2,

HP26_buff->linetype);

if (bigger != NULL) {

old = HP26_buff;

HP26_gnu_map[bigger->index] = bigger;

/* special case since DOTS entry is shared 3 ways */

if (bigger->index == 0) {

HP26_gnu_map[1] = bigger;

HP26_gnu_map[3] = bigger;

}

HP26_buff = bigger;

BN_delete(old);

}

(HP26_buff->x)[0] = x;

(HP26_buff->y)[0] = y;

(HP26_buff->isa_move)[0] = TRUE;

HP26_buff->next = 1;

HP26_overflows++;

}

/* checks for NOP, overcapacity condition, and then adds vector to the list */

TERM_PUBLIC void

HP26_vector(unsigned int x, unsigned int y)

{

if (HP26_buff->next > 2

&& x == (HP26_buff->x)[HP26_buff->next - 1]

&& y == (HP26_buff->y)[HP26_buff->next - 1]

&& !(HP26_buff->isa_move)[HP26_buff->next - 1]) {

HP26_nop_vect++;

return;

}

if (HP26_buff->next == HP26_buff->size)

HP26_handle_overflow();

/* otherwise add to the list */

(HP26_buff->x)[HP26_buff->next] = x;

(HP26_buff->y)[HP26_buff->next] = y;

(HP26_buff->isa_move)[HP26_buff->next] = FALSE;

HP26_buff->next++;

}

/* checks for NOP, checks for overcapacity, puts self on list */

TERM_PUBLIC void

HP26_move(unsigned int x, unsigned int y)

{

if (HP26_buff->next > 0) {

if (((HP26_buff->x)[HP26_buff->next - 1] == x)

&& ((HP26_buff->y)[HP26_buff->next - 1] == y)) {

/* null moves are NOP's */

HP26_nop_move++;

return;

} else if ((HP26_buff->isa_move)[HP26_buff->next - 1]) {

/* consecutive moves are NOP's */

(HP26_buff->x)[HP26_buff->next - 1] = x;

(HP26_buff->y)[HP26_buff->next - 1] = y;

HP26_nop_move++;

return;

}

if (HP26_buff->next == HP26_buff->size)

HP26_handle_overflow();

(HP26_buff->x)[HP26_buff->next] = x;

(HP26_buff->y)[HP26_buff->next] = y;

(HP26_buff->isa_move)[HP26_buff->next] = TRUE;

HP26_buff->next++;

return;

}

TERM_PUBLIC void

HP26_init()

{

HP26_gnu_map[-2 + 2] = BN_create(0, 2048, DOTS); /* border */

HP26_gnu_map[-1 + 2] = HP26_gnu_map[-2 + 2]; /* axes */

HP26_gnu_map[0 + 2] = BN_create(2, 3072, SOLID); /* plot 0 */

HP26_gnu_map[1 + 2] = HP26_gnu_map[-2 + 2]; /* plot 1 */

HP26_gnu_map[2 + 2] = BN_create(4, 1024, LINE5); /* plot 2 */

HP26_gnu_map[3 + 2] = BN_create(5, 256, LINE6); /* plot 3 */

HP26_gnu_map[4 + 2] = BN_create(6, 256, LINE8); /* plot 4 */

HP26_gnu_map[5 + 2] = BN_create(7, 128, LINE9); /* plot 5 */

HP26_gnu_map[6 + 2] = BN_create(8, 128, LINE10); /* plot 6 */

HP26_gnu_map[7 + 2] = BN_create(9, 64, LINE6); /* plot 7 */

HP26_gnu_map[8 + 2] = BN_create(10, 64, LINE4); /* plot 8 */

HP26_gnu_map[9 + 2] = BN_create(11, 512, POINT); /* point plot */

HP26_buff = HP26_gnu_map[10]; /* set to an unlikely linetype */

HP26_linetype_current = 0; /* set to force a linetype change */

HP26_angle = 1; /* left to right, default */

fputs("\033*mp1m2a2Q", gpoutfile);

/* 1 2 3 4

1. make text upright

2. select text size 1

3. make SET the default drawing op

4. left justify text */

fflush(gpoutfile);

}

TERM_PUBLIC void

HP26_graphics()

{

fputs("\033*daflsC", gpoutfile);

/* 12345

1. clear graphics display

2. shut off the alphanumeric display

3. graphics cursor off

4. into graphics text mode

5. enable graphics display */

/* set the pen & cursor positions to force an initial absolute move */

HP26_pen_x = HP26_pen_y = -200;

HP26_cursor_x = HP26_cursor_y = 800;

HP26_in_text = TRUE;

/* initialize statistics */

HP26_reduction_int = 0;

HP26_reduction_slope = 0;

HP26_nop_move = 0;

HP26_nop_vect = 0;

HP26_nop_line = 0;

HP26_overflows = 0;

}

TERM_PUBLIC void

HP26_text()

{

int i, j, curr;

/* always flush the current line first */

for (i = 0; i < HP26_gnu_map_size; i++)

if ((HP26_gnu_map[i])->linetype == HP26_linetype_current)

HP26_flush(HP26_gnu_map[i]);

/* now flush the rest of the lines */

for (i = 0; i < HP26_gnu_map_size; i++) {

HP26_flush(HP26_gnu_map[i]);

curr = HP26_gnu_map[i]->linetype;

for (j = 0; j < HP26_gnu_map_size; j++)

if ((HP26_gnu_map[j])->linetype == curr)

HP26_flush(HP26_gnu_map[j]);

}

fputs("\033*deT", gpoutfile);

/* 12

1. turn on the alphanumeric display

2. back to text mode */

fflush(gpoutfile);

/* informational: tells how many points compressed, how

many NOP's of each type, and how many times a buffer

overflowed during this plot */

if(HP26_reduction_int

+ HP26_reduction_slope

+ HP26_nop_move

+ HP26_nop_vect

+ HP26_overflows

+ HP26_nop_line > 0){

if (HP26_reduction_int>0)

printf("%d int-compress",HP26_reduction_int);

if (HP26_reduction_slope>0)

printf("%d slope-compress",HP26_reduction_slope);

if (HP26_nop_move>0)

printf(" %d nop_move",HP26_nop_move);

if (HP26_nop_vect>0)

printf(" %d nop_vect",HP26_nop_vect);

if (HP26_nop_line>0)

printf(" %d nop_line",HP26_nop_line);

if (HP26_overflows>0)

printf(" %d buffer overflows",HP26_overflows);

printf("\n");

}

TERM_PUBLIC void

HP26_reset()

{

int i;

for (i = 2; i < HP26_gnu_map_size; i++)

BN_delete(HP26_gnu_map[i]);

}

TERM_PUBLIC int

HP26_text_angle(float ang)

{

HP26_angle = (ang ? 2 : 1);

fprintf(gpoutfile, "\033*m%dN", HP26_angle);

return (TRUE);

}

TERM_PUBLIC void

HP26_put_text(unsigned int x, unsigned int y, const char *str)

{

char abs_str[10], rel_str[10];

if (!strlen(str))

return;

else {

fputs("\033*d", gpoutfile);

if (!HP26_in_text) {

fputc('s', gpoutfile);

HP26_in_text = TRUE;

}

sprintf(rel_str, "%d,%dP", x - HP26_cursor_x, y - HP26_cursor_y);

sprintf(abs_str, "%d,%dO", x, y);

if (strlen(rel_str) < strlen(abs_str))

fputs(rel_str, gpoutfile);

else

fputs(abs_str, gpoutfile);

fputs(str, gpoutfile);

HP26_pen_x = HP26_cursor_x = x;

HP26_pen_y = HP26_cursor_y = y;

}

tmp = &(HP26_all_buffers[HP26_linetype_current]);

tmp->x[tmp->next] = x;

tmp->y[tmp->next] = y;

tmp->isa_move[tmp->next] = TRUE;

tmp->next++;

HP26_flush(tmp);

fprintf(gpoutfile,"\033*l%s\r",str);

return;

}

/* checks for NOP, sets HP26_buff to point to the right buffer */

TERM_PUBLIC void

HP26_linetype(int linetype)

{

if (linetype < -2)

linetype = LT_BLACK;

if (linetype > 8)

linetype %= 9;

linetype += 2;

if (HP26_gnu_map[linetype] == HP26_buff) {

HP26_nop_line++;

return; /* gnuplot just sent us another NOP */

}

HP26_buff = HP26_gnu_map[linetype];

}

/* switches to a solid linetype and calls do_point, then switches back */

TERM_PUBLIC void

HP26_line_and_point(unsigned int x, unsigned int y, int number)

{

int line_save, not_solid;

/* shut up warnings with dummy initializer -SB */

line_save = 0;

not_solid = (HP26_buff->linetype != SOLID);

if (not_solid) {

line_save = HP26_buff->linetype;

HP26_linetype(0); /*switch to a solid line */

}

HP26_do_point(x, y, number);

if (not_solid)

HP26_linetype(line_save);

}

/* provides 9 point types so they stay in sync with the linetypes

puts simpler point types first on the assumption they are more

frequently used */

static void

HP26_do_point(unsigned int x, unsigned int y, int number)

{

int htic, vtic;

HP26_Buffer_Node *tmp;

vtic = HP26_VTIC / 2;

htic = HP26_HTIC / 2;

if (number < 0) {

/* do a dot -- special case */

tmp = HP26_buff;

HP26_buff = HP26_gnu_map[11]; /* point plot */

HP26_vector(x, y);

HP26_buff = tmp;

}

switch (number % 9) {

case 0:

/* do triangle */

HP26_move(x - htic, y - vtic);

HP26_vector(x, y + vtic);

HP26_vector(x + htic, y - vtic);

HP26_vector(x - htic, y - vtic);

break;

case 1:

/* do nambla */

HP26_move(x - htic, y + vtic);

HP26_vector(x, y - vtic);

HP26_vector(x + htic, y + vtic);

HP26_vector(x - htic, y + vtic);

break;

case 2:

/* do left triangle */

HP26_move(x - htic, y);

HP26_vector(x + htic, y + vtic);

HP26_vector(x + htic, y - vtic);

HP26_vector(x - htic, y);

break;

case 3:

/* do right triangle */

HP26_move(x + htic, y);

HP26_vector(x - htic, y + vtic);

HP26_vector(x - htic, y - vtic);

HP26_vector(x + htic, y);

break;

case 4:

/* do box */

HP26_move(x - htic, y - vtic);

HP26_vector(x - htic, y + vtic);

HP26_vector(x + htic, y + vtic);

HP26_vector(x + htic, y - vtic);

HP26_vector(x - htic, y - vtic);

break;

case 5:

/* do plus */

HP26_move(x, y + vtic);

HP26_vector(x, y - vtic);

HP26_move(x - htic, y);

HP26_vector(x + htic, y);

break;

case 6:

/* do X */

HP26_move(x + htic, y + vtic);

HP26_vector(x - htic, y - vtic);

HP26_move(x - htic, y + vtic);

HP26_vector(x + htic, y - vtic);

break;

default:

/* do diamond */

HP26_move(x, y - vtic);

HP26_vector(x - htic, y);

HP26_vector(x, y + vtic);

HP26_vector(x + htic, y);

HP26_vector(x, y - vtic);

break;

}

#endif /* TERM_BODY */

#ifdef TERM_TABLE

TERM_TABLE_START(hp2623a_driver)

"hp2623A", "HP2623A and maybe others",

HP26_XMAX, HP26_YMAX, HP26_VCHAR, HP26_HCHAR,

HP26_VTIC, HP26_HTIC, options_null, HP26_init, HP26_reset,

HP26_text, null_scale, HP26_graphics, HP26_move, HP26_vector,

HP26_linetype, HP26_put_text, HP26_text_angle,

null_justify_text, HP26_line_and_point, do_arrow, set_font_null

TERM_TABLE_END(hp2623a_driver)

#undef LAST_TERM

#define LAST_TERM hp2623a_driver

#endif /* TERM_TABLE */

#endif /* TERM_PROTO_ONLY */

#ifdef TERM_HELP

START_HELP(hp2623a)

"1 hp2623a",

"?commands set terminal hp2623a",

"?set terminal hp2623a",

"?set term hp2623a",

"?terminal hp2623a",

"?term hp2623a",

"?hp2623a",

" The `hp2623a` terminal driver supports the Hewlett Packard HP2623A. It has",

" no options."

END_HELP(hp2623a)

#endif

gnuplot/term/hp26.trm at master · gnuplot/gnuplot · GitHub

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