TURBO C printing graphics








  PRODUCT  :  TURBO C                                NUMBER  :  453
  VERSION  :  2.0
       OS  :  PC-DOS
     DATE  :  MARCH 10, 1989                           PAGE  :  1/3

    TITLE  :  PRINTING GRAPHICS




  The following code is an example function which prints a graphics
  screen on an Epson compatible printer.


  PROTOTYPE: printimage(int left, int top, int right, int bottom);

  -----------------------------------------------------------------

  #include <graphics.h>
  #include <stdio.h>
  #include <io.h>


  #define        ESC       '\x1B'
  #define        LPT1      0
  #define        LPT2      1

  #define        prn_putc(x)    biosprint(0,(x),LPT1)



  /*  Sets Epson printer to bit image mode.
      Nbytes is the number of bytes to print.  */

  static void bitImage(int Nbytes)
  {

      register int    n1, n2;

      n2 = Nbytes >> 8;
      n1 = Nbytes - (n2 << 8);

      prn_putc(ESC);
      prn_putc('*');
      prn_putc(4);
      prn_putc(n1);
      prn_putc(n2);

  }

  /*  Get pixels from the screen and convert them to
      the printer's pin order.  */














  PRODUCT  :  TURBO C                                NUMBER  :  453
  VERSION  :  2.0
       OS  :  PC-DOS
     DATE  :  MARCH 10, 1989                           PAGE  :  2/3

    TITLE  :  PRINTING GRAPHICS




  static unsigned char getScrBits(int x, int y)
  {
      unsigned char firePins;

      firePins  = (getpixel(x, y++)==0)? 0: 0x80;
      firePins |= (getpixel(x, y++)==0)? 0: 0x40;
      firePins |= (getpixel(x, y++)==0)? 0: 0x20;
      firePins |= (getpixel(x, y++)==0)? 0: 0x10;
      firePins |= (getpixel(x, y++)==0)? 0: 0x08;
      firePins |= (getpixel(x, y++)==0)? 0: 0x04;
      firePins |= (getpixel(x, y++)==0)? 0: 0x02;
      firePins |= (getpixel(x, y  )==0)? 0: 0x01;

      return     firePins;
  }

  /*  Graphics print function.  */

  int printimage(int left, int top, int right, int bottom)
  {
      int        x, y, width, height;

      width  = right-left;
      height = bottom-top;

      /* Initialize line spacing to 7/72" */
      prn_putc(ESC);
      prn_putc('1');

      for (y=0; y<height; y+=8)
      {
            bitImage(width);

            for (x=0; x<width; x++)
                 prn_putc(getScrBits(x,y));

            prn_putc('\n');
      }
      return     0;
  }

  /****************************************************************














  PRODUCT  :  TURBO C                                NUMBER  :  453
  VERSION  :  2.0
       OS  :  PC-DOS
     DATE  :  MARCH 10, 1989                           PAGE  :  3/3

    TITLE  :  PRINTING GRAPHICS




      An example program which demonstrates a call to the above
      function.

  ****************************************************************/

  main(){

    int driver, mode,x,y;
    driver = DETECT; /* autodetect */
    mode = 0;
    initgraph(&driver, &mode, "");
    x=getmaxx();
    y=getmaxy();

    /* draw some things */
    rectangle(0,0,x,y);
    circle(300,200,100);
    circle(210,110,50);
    circle(390,110,50);
    circle(270,170,10);
    circle(272,173,3);
    circle(330,170,10);
    circle(332,173,3);
    circle(300,200,10);
    moveto(280,220);
    lineto(290,230);
    lineto(310,230);
    lineto(320,220);

    /* Call the graphics print function. */
    printimage(0,0,x,y);  /* Print the entire screen. */

    closegraph();
    return 0;
  }

  DISCLAIMER: You  have the right to use this technical information
  subject to the terms  of  the  No-Nonsense License Statement that
  you received with  the  Borland product to which this information
  pertains.









Comments

Post a Comment

Popular posts from this blog

BOTTOM LIVE script

                                  BOTTOM                                   ======                     by Adrian Edmondson and Rik Mayall                                 Bottom Live                                 ===========                               Richie  Rik Mayall                                Eddie  Adrian Edmondson Introduction ------------ [Opening shot of theatre, with huge pictures of Richie and Eddie. Caption: "Live from the Mayflower Theatre, Southampton".] Vox Pop 1:  So I'm hoping that this is a lot ruder than the TV, because             they can get away with it. [Cut to Ade's dressing-room door. It opens to reveal a clothes rail, its only contents a brown jacket.] Vox Pop 2:  I just think they're ace, you know, absolutely excellent. [Cut to dressing-gown, pan across a pair of glasses and a revolver.] Vox Pop 3:  It couldn't be too rude, I mean that's what young people want. [Rik's dressing-room door.]
Read more

Evidence supporting quantum information processing in animals

              Evidence supporting quantum            information processing in animals                    James A. Donald                    1068 Fulton Av                    Sunnyvale, CA 94089-1505                    USA I show that quantum systems can rapidly solve some problems for which finite state machines require a non- polynomially large time. This class of problems is closely related to the class of problems that animals can solve rapidly and effortlessly, but are intractable for computers by all known algorithms. 1. Introduction      Animals, including very simple animals, can rapidly and effortlessly perceive objects, whereas computers take nonpolynomial time to do this by all known algorithms [1, 2, 3, 4, 5, 6]. Our persistent inability to emulate perception gives reason to doubt the current paradigm and to look for an alternative paradigm.      Penrose[7] and many others [8, 9, 10] argue from practical considerations, Godel's theorem, and
Read more

ARMIES OF CHAOS

                          ARMIES OF CHAOS -      Before anyone proposes more gun control, he or she should know  about a simple, deadly weapon 4 times as powerful as Dirty Harry's  legendary .44 Magnum -- and at least twice as concealable -- that  _can't_ controlled.        This simple, deadly weapon can be made by anyone -- even a  child -- with unpowered hand tools in an hour's time using $5 worth  of materials, most of which are available around the house anyway.   In traditional form it's reusable an unlimited number of times, and  modern plastics have rendered its disposable version electronically  undetectable.  You can clear a room with such a weapon (more of a  hand-held directional grenade than a gun -- sort of a recycleable  Claymore mine) and it's just one of hundreds of similar time-proven  designs.        Complete instructions for building this simple, deadly weapon  could be given in half the space I'm using here and not require a  single illustrat
Read more