void Figure::bresenham1() {
	for (int i=0; i<N; i++ ) {
		int x1,x2,y1,y2,f=0;
		int dx,dy,sx,sy;
		x1 = vertex[i].x;
		y1 = vertex[i].y;
		x2 = vertex[(i+1)==N ? 0 : i+1].x;
		y2 = vertex[(i+1)==N ? 0 : i+1].y;
		dx = x2-x1 < 0 ? -(x2-x1) : x2-x1;
		dy = y2-y1 < 0 ? -(y2-y1) : y2-y1;
		sx = x1 < x2 ? 1 : x1 == x2 ? 0 : -1;
		sy = y1 < y2 ? 1 : y1 == y2 ? 0 : -1;
		
		if  (dy > dx) {
			int t = dx;
			dx = dy;
			dy = t;
			f=1;
		}
		int I,m,w;
		I = 255;
		m = 2*I*dy;
		w = 2*dx*I - m;
		int e = m / 2;

			RGBA* row = image + (SCREEN_WIDTH ) * y1;
				row[x1].r = /*color.r - I +*/( f==1 ?((w-e)<0 ? 0 : w-e)/(2*dx) : e / (2*dx));
				row[x1].g = color.g;
				row[x1].b = color.b;
				row[x1].a = color.a;
			

		for (int j = 0; j< dx; j++) {
					

			if (e>=w) {
				if (f) {
					x1+=sx;
				} else y1+=sy;
				e-=w;
			} else e+=m;
			if (f) {
				y1+=sy;
			} else x1+=sx;
			RGBA* row = image + (SCREEN_WIDTH ) * y1;
				row[x1].r = /*color.r - I +*/( (f==1) != ((sx*sy)==-1) ? I - e/(2*dx) : e / (2*dx));
				row[x1].g = color.g;
				row[x1].b = color.b;
				row[x1].a = color.a;
		}
	}
}