/* ***********************************************************************
   *									 *
   *	   Smear Algorithm (Box Filter of Sort) for Smoothing Data	 *
   *									 *
   *				Program by				 *
   *                            Larry Sharp				 *
   *									 *
   ***********************************************************************
*/

#include "stdio.h"
#include "stdlib.h"
#include "dos.h"
#include "conio.h"
#include "math.h"
#include "string.h"
#include "math.inc"
#include "graph.inc"
#include "render.inc"

/* ***********************************************************************
   *									 *
   *              Program to Smear Data (Box Filter Of Sort)             *
   *									 *
   ***********************************************************************
*/

int i, j, d, d1, d2, d3, d4, d5, d6, d7, d8, d9;
Name OF2;

void main()
{
  clrscr();
  printf("z-Buffer Data correction Program\n\n");
  ClearHeightBuffer();
  GetObjectFile();
  strcpy(OF2, ObjectFile);
  LoadHeightBuffer(ObjectFile);
  printf("\nCorrecting Height Buffer\n");

  for(j=1; j<Res; j++)
  {
    for(i=1; i<Res; i++)
    {
      d1=Height[i][j];
      d2=Height[i-1][j];
      d3=Height[i+1][j];
      d4=Height[i][j-1];
      d5=Height[i][j+1];
      d6=Height[i-1][j-1];
      d7=Height[i+1][j+1];
      d8=Height[i-1][j+1];
      d9=Height[i+1][j-1];
      d=(d1+d1+d3+d4+d5+d6+d7+d8+d9)/9;
      Height[i][j]=d;
    }
  }

  strcpy(ObjectFile, OF2);
  SaveHeightBuffer(ObjectFile);
}