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//
// cdtext is an example program that uses the text attribute commands
// cdSetTextPath and cdSetTextOrient
//
//
// cdtext.c: test program for the cgmdraw module.
//
// Written by G. Edward Johnson <mailto:lorax@nist.gov>
// Date: May 1996
// Copyright: cd software produced by NIST, an agency of the
// U.S. government, is by statute not subject to copyright
// in the United States. Recipients of this software assume all
// responsibilities associated with its operation, modification
// and maintenance.
//
//
#include <stdio.h>
#include <math.h>
#include <string.h>
#include <stdlib.h>
#include "defines.h"
#include "cd.h"
int main()
{
// you must create a pointer to the image(s) that you will be using
// not suprisingly, it is of type cdImagePtr
cdImagePtr im;
// this is a pointer to the output file you will be using
FILE *outf;
// these will be index's into the color palette containing
// the corresponding colors
int black, white, blue;
// Create an image 800 pixels wide by 400 pixels high
im = cdImageCreate( 800, 400 );
// allocate some colors (isn't this fun?)
// the first color allocated is the background color
white = cdImageColorAllocate( im, 255, 255, 255 );
black = cdImageColorAllocate( im, 0, 0, 0 );
blue = cdImageColorAllocate( im, 0, 0, 255 );
// set the text attributes
// font, colorindex, and size respectivily
// font is the style the text is written in. 1 is for Times,
// 5 is for Helvetica.
// we will have black text for this one
// Size is a tough one, but larger numbers give larger text.
//
if ( !( cdSetTextAttrib( im, 5, black, 20 ) ) )
return 1;
// Set some line attributes, lets make lines solid, width 1, and blue
//
if ( !( cdSetLineAttrib( im, 1, 1, blue ) ) )
return 1;
// Draw a couple of grid lines
if ( !( cdLine( im, 0, 200, 799, 200 ) ) )
return 1;
if ( !( cdLine( im, 200, 0, 200, 399 ) ) )
return 1;
if ( !( cdLine( im, 600, 0, 600, 399 ) ) )
return 1;
// Show Text going left, up, down, and right, all starting
// from the same point
// Text going to the left
if ( !( cdSetTextPath( im, 1 ) ) )
return 1;
if ( !( cdText( im, 200, 200, "Text Left" ) ) )
return 1;
// Text going UP
if ( !( cdSetTextPath( im, 2 ) ) )
return 1;
if ( !( cdText( im, 200, 200, "Text Up" ) ) )
return 1;
// Text going DOWN
if ( !( cdSetTextPath( im, 3 ) ) )
return 1;
if ( !( cdText( im, 200, 200, "Text Down" ) ) )
return 1;
// Text going to the RIGHT
if ( !( cdSetTextPath( im, 0 ) ) )
return 1;
if ( !( cdText( im, 200, 200, "Text Right" ) ) )
return 1;
// Show text going at an angle of 0, 45, 90, 135, 180 Degrees
//
// Text at no angle
if ( !( cdText( im, 600, 200, "CGM Draw" ) ) )
return 1;
// Text, 45 Degree Angle
if ( !( cdSetTextOrient( im, -1, 1, 1, 1 ) ) )
return 1;
if ( !( cdText( im, 600, 200, "CGM Draw" ) ) )
return 1;
// Text, 90 Degree Angle
if ( !( cdSetTextOrient( im, -1, 0, 0, 1 ) ) )
return 1;
if ( !( cdText( im, 600, 200, "CGM Draw" ) ) )
return 1;
// Text, 135 Degree Angle
if ( !( cdSetTextOrient( im, -1, -1, -1, 1 ) ) )
return 1;
if ( !( cdText( im, 600, 200, "CGM Draw" ) ) )
return 1;
// Text, 180 Degree Angle
if ( !( cdSetTextOrient( im, 0, -1, -1, 0 ) ) )
return 1;
if ( !( cdText( im, 600, 200, "CGM Draw" ) ) )
return 1;
// Skewed Text, No Angle
if ( !( cdSetTextOrient( im, 1, 1, 1, 0 ) ) )
{
return 1;
}
if ( !( cdSetTextAttrib( im, -1, -1, 40 ) ) )
{
return 1;
}
if ( !( cdText( im, 300, 300, "CGM Draw" ) ) )
{
return 1;
}
// show some lines around it
if ( !( cdLine( im, 300, 300, 500, 300 ) ) )
return 1;
if ( !( cdLine( im, 300, 300, 340, 340 ) ) )
return 1;
// reset the text to 0 angle
if ( !( cdSetTextOrient( im, 0, 1, 1, 0 ) ) )
return 1;
if ( !( cdSetTextAttrib( im, 5, -1, 20 ) ) )
return 1;
if ( !( cdText( im, 5, 5, "G. Edward Johnson" ) ) )
return 1;
// now write the file out, lets call it cdtext.cgm
outf = fopen( "cdtext.cgm", "wb" );
if ( !outf )
return 1;
cdImageCgm( im, outf );
fclose( outf );
outf = 0;
// Remember to destroy the image when you are done
cdImageDestroy( im );
im = 0;
printf( "CGM Text Example!!!\n" );
return 0;
}
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