1 /*- 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.proprietary.c% 6 */ 7 8 #ifndef lint 9 static char sccsid[] = "@(#)open.c 8.1 (Berkeley) 06/04/93"; 10 #endif /* not lint */ 11 12 /* 13 * Displays plot files on a AED512 graphics terminal. 14 */ 15 16 #include "aed.h" 17 18 char dbuf[BUFSIZ]; /* Used to buffer display characters */ 19 struct sgttyb sgttyb; /* Used to save terminal control bits */ 20 int curx, cury; /* Current screen position */ 21 int xbot, ybot; /* Coordinates of screen lower-left corner */ 22 int scale; /* The number of pixels per 2**12 units 23 * of world coordinates. 24 */ 25 26 /* 27 * The following is the color map, containing reg, green, and blue 28 * values for color locations 0 and 1. 29 */ 30 31 static int colors[] = {200, 200, 200, 0, 0, 125, 125, 0, 0, 125, 0, 0}; 32 33 /*--------------------------------------------------------- 34 * Openpl initializes the graphics display and clears its screen. 35 * 36 * Results: None. 37 * 38 * Side Effects: 39 * The display is re-initialized and the file is remembered for 40 * use in all subsequent calls to this module. The display's 41 * color map is reset. The display is put into raw mode, but 42 * the previous mode bits are saved. 43 * 44 * Errors: None. 45 *--------------------------------------------------------- 46 */ 47 openpl() 48 { 49 int flags, *p, i; 50 char dum[4]; 51 52 /* First, grab up the display modes, then reset them to put it 53 * into cooked mode. Also, lock the terminal. 54 */ 55 56 (void) gtty(fileno(stdout), &sgttyb); 57 flags = sgttyb.sg_flags; 58 sgttyb.sg_flags = (sgttyb.sg_flags & ~(RAW | CBREAK)) | EVENP | ODDP; 59 (void) stty(fileno(stdout), &sgttyb); 60 sgttyb.sg_flags = flags; 61 62 /* Save the file pointer around for later use, then output an 63 * initialization string to the display. The initialization 64 * string resets the terminal, sets formats, clears the display, 65 * initializes the read and write masks, and sets the color map. 66 */ 67 68 setbuf(stdout, dbuf); 69 fputs("\33\33G1HHHN[00LFFCFFMFFFFFFFF", stdout); 70 fputs("K0004", stdout); 71 p = colors; 72 for (i=0; i<12; i++) 73 { 74 chex(*p++, dum, 2); 75 fputs(dum, stdout); 76 } 77 fputs("^15060AL", stdout); 78 scale = 1<<12; 79 curx = cury = xbot = ybot = 0; 80 (void) fflush(stdout); 81 } 82