Lab46 Wiki

 
#include<stdio.h>
#include<gd.h>
#define BLACK 0
#define RED 1
#define GREEN 2
#define BLUE 3
#define WHITE 4
 
#define WIDE 12
#define HIGH 12
#define WIDTH 16
 
int main(){
	FILE*out;
	char outfile[]="/home/jlapham1/public_html/102pix.png";
	gdImagePtr img;
	unsigned int color[5];
	img = gdImageCreate(WIDE*WIDTH,HIGH*WIDTH);
/* defining actual colors here, 
	(red,green,blue) */
	color[BLACK]=gdImageColorAllocate(img,0,0,0);
	color[RED]=gdImageColorAllocate(img,255,0,0);
	color[GREEN]=gdImageColorAllocate(img,0,255,0);
	color[BLUE]=gdImageColorAllocate(img,0,0,255);
	color[WHITE]=gdImageColorAllocate(img,255,255,255);
	int a,x,y,i,col,line,pixnum,pixnumleft;
	int pix[WIDE*HIGH];//the array for the picture
	int arrayGetTwo =0;//separate variable that essentially indexes the array with the following inner for loop
 
	//populating the array with values now
	for(i=0;i<HIGH;i++){
		line = i;//the horizontal line number you are on
		pixnumleft=WIDE;//the number of pixels left in a line
		while(pixnumleft>0){
			printf("Enter the next color.\nBlack=0,Red=1,Green=2,Blue=3,White=4 : ");
			scanf("%d",&col);
			printf("There are %u pixels left in line %u.\nEnter the number of pixels for color %u : ",pixnumleft,line,col);
			scanf("%d",&pixnum);
			for(a=0;a<pixnum;a++){
				pix[arrayGetTwo]=col;
				arrayGetTwo ++;
			}
			pixnumleft=pixnumleft-pixnum;
		}
	}
 
 
	//pulling from the array and drawing the picture now
	int test;//vari that temp stores the color from the array
	int arrayGet;//vari for the number in the array
	int yinc = 0;//var for the width of y
	int xinc = 0;//var for the width of x
	int xinctwo;//incremented before the loop and is WIDTH larger than xinc
	int yinctwo = 0;//incremented befor the loop and is WIDTH larger than yinc
	for(y=0;y<HIGH;y++){
		yinctwo = yinctwo + WIDTH;
		//debug line
		//printf("y is %u\n",y);
		xinctwo = 0;
		xinc = 0;
		for(x=0;x<WIDE;x++){
			xinctwo = xinctwo + WIDTH;
			arrayGet = x+(y*WIDE);
			printf("arrayGet is %u\n",arrayGet);
			test = pix[arrayGet];
			gdImageFilledRectangle(img,xinc,yinc,xinctwo,yinctwo,color[test]);
			/*debugging lines
				printf("xinc is %u\n",xinc);
				printf("xinctwo is %u\n",xinctwo);
				printf("yinc is %u\n",yinc);
				printf("yinctwo is %u\n",yinctwo);
				printf("test is %u\n",test);*/
			xinc = xinc + WIDTH;
		}
	yinc = yinc + WIDTH;
	}
 
	out=fopen(outfile,"wb");
	gdImagePngEx(img,out,-1);
	fclose(out);
	gdImageDestroy(img);
	return(0);
}