/* 
 * 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 <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 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 0;

	/* Set some line attributes,  lets make lines solid, width 1, and blue
	 */
	if (!(cdSetLineAttrib(im, 1, 1, blue))) return 0;

	/* Draw a couple of grid lines */
	if (!(cdLine(im, 0,200,799,200))) return 0;
	if (!(cdLine(im, 200,0,200,399))) return 0;
	if (!(cdLine(im, 600,0,600,399))) return 0;


	/* Show Text going left, up, down, and right, all starting
	 * from the same point */

	/* Text going to the left */
	if (!(cdSetTextPath(im, 1))) return 0;
	if (!(cdText(im, 200, 200, "Text Left"))) return 0;
	
	/* Text going UP */
	if (!(cdSetTextPath(im, 2))) return 0;
	if (!(cdText(im, 200, 200, "Text Up"))) return 0;
	
	/* Text going DOWN */
	if (!(cdSetTextPath(im, 3))) return 0;
	if (!(cdText(im, 200, 200, "Text Down"))) return 0;

	/* Text going to the RIGHT */
	if (!(cdSetTextPath(im, 0))) return 0;
	if (!(cdText(im, 200, 200, "Text Right"))) return 0;

	/* 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 0;

	/* Text, 45 Degree Angle */
	if (!(cdSetTextOrient(im, -1, 1, 1, 1))) return 0;
	if (!(cdText(im, 600, 200, "CGM Draw"))) return 0;

	/* Text, 90 Degree Angle */
	if (!(cdSetTextOrient(im, -1, 0, 0, 1))) return 0;
	if (!(cdText(im, 600, 200, "CGM Draw"))) return 0;

	/* Text, 135 Degree Angle */
	if (!(cdSetTextOrient(im, -1, -1, -1, 1))) return 0;
	if (!(cdText(im, 600, 200, "CGM Draw"))) return 0;

	/* Text, 180 Degree Angle */
	if (!(cdSetTextOrient(im, 0, -1, -1, 0))) return 0;
	if (!(cdText(im, 600, 200, "CGM Draw"))) return 0;

	/* reset the text to 0 angle */
	if (!(cdSetTextOrient(im, 0, 1, 1, 0))) return 0;

	
	if (!(cdSetTextAttrib(im, 5, -1, -1))) return 0;
	if (!(cdText(im, 5, 5, "G. Edward Johnson"))) return 0;

	/* now write the file out, lets call it cdtext.cgm */
	outf = fopen("cdtext.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("CGM Text Example!!!\n");

	return 1;

}