clear method

void clear(int backColor, int scaleColor, int unitColor, double unitX, double unitY, int textColor, double textX, double textY,)

Implementation

void clear( int backColor, int scaleColor, int unitColor, double unitX, double unitY, int textColor, double textX, double textY ){
	int i;
	int tmp;
	double pos, end;

	if( unitX > 0.0 ){
		while( true ){
			tmp = _gWorld.imgSizX( unitX );
			if( (tmp < 0) || (tmp >= 2) ){
				break;
			}
			unitX *= 10.0;
		}
	}
	if( unitY > 0.0 ){
		while( true ){
			tmp = _gWorld.imgSizY( unitY );
			if( (tmp < 0) || (tmp >= 2) ){
				break;
			}
			unitY *= 10.0;
		}
	}

	// グラフ画面の背景塗りつぶし
	_gWorld.clear( backColor );

	int saveColor = _gWorld.color();
	_gWorld.setColor( unitColor );

	// 水平方向目盛り線の描画
	if( unitX > 0.0 ){
		pos = _gWorld.wndPosX( 0 );
		end = _gWorld.wndPosX( _gWorld.width() - 1 );
		i = pos ~/ unitX;
		if( (_gWorld.wndPosX( 1 ) - pos) > 0.0 ){
			while( (pos = i * unitX) <= end ){
				_drawVLine( pos );
				i++;
			}
		} else {
			while( (pos = i * unitX) >= end ){
				_drawVLine( pos );
				i--;
			}
		}
	}

	// 垂直方向目盛り線の描画
	if( unitY > 0.0 ){
		pos = _gWorld.wndPosY( 0 );
		end = _gWorld.wndPosY( _gWorld.height() - 1 );
		i = pos ~/ unitY;
		if( (_gWorld.wndPosY( 1 ) - pos) > 0.0 ){
			while( (pos = i * unitY) <= end ){
				_drawHLine( pos );
				i++;
			}
		} else {
			while( (pos = i * unitY) >= end ){
				_drawHLine( pos );
				i--;
			}
		}
	}

	_gWorld.setColor( scaleColor );

	// X軸の描画
	_drawHLine( 0.0 );

	// Y軸の描画
	_drawVLine( 0.0 );

	_gWorld.setColor( textColor );

	// 水平方向目盛り文字の描画
	unitX *= textX;
	if( unitX > 0.0 ){
		pos = _gWorld.wndPosX( 0 );
		end = _gWorld.wndPosX( _gWorld.width() - 1 );
		i = pos ~/ unitX;
		if( (_gWorld.wndPosX( 1 ) - pos) > 0.0 ){
			while( (pos = i * unitX) <= end ){
				_drawXText( pos, 0.0 );
				i++;
			}
		} else {
			while( (pos = i * unitX) >= end ){
				_drawXText( pos, 0.0 );
				i--;
			}
		}
	}

	// 垂直方向目盛り文字の描画
	unitY *= textY;
	if( unitY > 0.0 ){
		pos = _gWorld.wndPosY( 0 );
		end = _gWorld.wndPosY( _gWorld.height() - 1 );
		i = pos ~/ unitY;
		if( (_gWorld.wndPosY( 1 ) - pos) > 0.0 ){
			while( (pos = i * unitY) <= end ){
				_drawYText( 0.0, pos );
				i++;
			}
		} else {
			while( (pos = i * unitY) >= end ){
				_drawYText( 0.0, pos );
				i--;
			}
		}
	}

	_gWorld.setColor( saveColor );
}