246         neighbor;  in RadonProjection()  local
254           if (GetMatrixElement(p,x+i+step,y+i,&neighbor) == MagickFalse)  in RadonProjection()
256           neighbor+=element;  in RadonProjection()
257           if (SetMatrixElement(q,x+2*i,y,&neighbor) == MagickFalse)  in RadonProjection()
259           if (GetMatrixElement(p,x+i+step,y+i+1,&neighbor) == MagickFalse)  in RadonProjection()
261           neighbor+=element;  in RadonProjection()
262           if (SetMatrixElement(q,x+2*i+1,y,&neighbor) == MagickFalse)  in RadonProjection()
269           if (GetMatrixElement(p,x+i+step,y+i,&neighbor) == MagickFalse)  in RadonProjection()
271           neighbor+=element;  in RadonProjection()
272           if (SetMatrixElement(q,x+2*i,y,&neighbor) == MagickFalse)  in RadonProjection()
312         neighbor;  in RadonProjection()  local
316       if (GetMatrixElement(p,x,y+1,&neighbor) == MagickFalse)  in RadonProjection()
318       delta=(ssize_t) element-(ssize_t) neighbor;  in RadonProjection()