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//
// cdsimple is a very simple program that uses the cd library.
// it will walk you through the basics.
//
//
// cdsimple.c: test program for the cgmdraw module.
//
// Written by G. Edward Johnson <mailto:lorax@nist.gov>
// Date: April 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.
//
//
#ifndef NOMALLOCH
#include <malloc.h>
#endif
#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 400 pixels wide by 500 pixels high
im = cdImageCreate( 400, 500 );
// 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 fill attributes
// fill, colorindex, and hatch respectivily
// see the cd documentation for a complete description
// fill is the color that will be on the inside of filled objects
// such as rectangles and polygons.
// It can be 1 for solid color, 2 for hatch pattern, 4 for empty
// let's use blue for the fill color
// we are going to set it to solid, so the hatch pattern doesn't
// matter. we will signify no change by putting in -1
if ( !( cdSetShapeFillAttrib( im, 1, blue, -1 ) ) )
return 1;
// notice that we also checked to make sure the command actually
// worked.
// we don't want the edges of our shapes to be a different color
// so make them invisible. 0 means invisible, 1 means visible.
if ( !( cdSetEdgeVis( im, 0 ) ) )
return 1;
// 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.
// 25 is a not too large size
if ( !( cdSetTextAttrib( im, 5, black, 25 ) ) )
return 1;
// Now that we have set some attributes, lets do some drawing
// Draw a rectangle (10,450) is upper left, (350,350) is lower right
if ( !( cdRectangle( im, 10, 450, 350, 350 ) ) )
return 1;
// lets put some text in the picture too.
// (100,100) is the point at the lower left corner of the text
if ( !( cdText( im, 100, 100, "Hello World" ) ) )
return 1;
// now write the file out, lets call it cdsimple.cgm
outf = fopen( "cdsimple.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( "I just created a simple CGM!!!\n" );
return 0;
}
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