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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.
*/
#include <malloc.h>
#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 0;
/* 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 0;
/* 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 0;
/* 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 0;
/* 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 0;
/* now write the file out, lets call it cdsimple.cgm */
outf = fopen("cdsimple.cgm", "wb");
if (!outf) return 0;
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 1;
}
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