int back,parts1;
int px = 0;
int py = 0;
int gw,gh;

// ********************************************************
// 背景描画 ( 最初に描画 )
// ********************************************************
// 左上
DrawRectGraph( 0, 0, gw-px, py, px, gh-py, back, false, false ) ;
// 右上
DrawRectGraph( px, 0, 0, py, gw, gh-py, back, false, false ) ;
// 左下
DrawRectGraph( 0, gh-py, gw-px, 0, px, gh, back, false, false ) ;
// 右下
DrawRectGraph( px, gh-py, 0, 0, gw, gh, back, false, false ) ;

	double toRad;

	// 左上
	if ( px > 800 ) {
		toRad = atan2( p.y+32 - (gh - py - 200), p.x+32 - (px - gw + 40) );
		toRad -= 3.14/2;
		DrawRotaGraph( px - gw + 40, gh - py - 200,
				1, toRad,
				parts1, true , false ) ;
	}
	else {
		toRad = atan2( p.y+32 - (gh - py - 200), p.x+32 - (px + 40) );
		toRad -= 3.14/2;
		DrawRotaGraph( px + 40, gh - py - 200,
				1, toRad,
				parts1, true , false ) ;
	}

	py--;
	if ( py < 0 ) {
		py = gh;
	}

	// 右へ移動
	if ( p.right ) {
		p.Move( PAD_INPUT_RIGHT, 3 );
		px -= 3;
		if ( px < 0 ) {
			px = gw;
		}
	}
	// 左へ移動
	if ( p.left ) {
		p.Move( PAD_INPUT_LEFT, 3 );
		px += 3;
		if ( px > gw ) {
			px = 0;
		}
	}