PHPPresentation - 折线图阴影

我想阴影折线图什么是阴影线区域的方法。我已经使用这个代码PHPPresentation - 折线图阴影

 $seriesData = array(
     'Monday' => 12, 
     'Tuesday' => 15, 
     'Wednesday' => 13, 
     'Thursday' => 17, 
     'Friday' => 14, 
     'Saturday' => 9, 
     'Sunday' => 7 
    ); 

    $seriesData1 = array(
     'Monday' => 22, 
     'Tuesday' => 25, 
     'Wednesday' => 23, 
     'Thursday' => 27, 
     'Friday' => 24, 
     'Saturday' => 19, 
     'Sunday' => 17 
    ); 

    $oFill = new Fill(); 
    $oFill->setFillType(Fill::FILL_SOLID)->setStartColor(new Color('FFE06B99')); 
    $oShadow = new Shadow(); 
    $oShadow->setVisible(true)->setDirection(45)->setDistance(10); 

    $lineChart = new Line(); 
    $series = new Series('Downloads', $seriesData); 
    $series->setShowSeriesName(true); 
    $series->setShowValue(true); 
    $series->setFill(new Fill(new Color('FFE06B99'))); 
    $lineChart->addSeries($series); 

    $series1 = new Series('Downloads', $seriesData1); 
    $series1->setShowSeriesName(true); 
    $series1->setShowValue(true); 
    $lineChart->addSeries($series1); 

    $shape = $currentSlide->createChartShape(); 
    $shape->setName('PHPPresentation Daily Downloads')->setResizeProportional(false)->setHeight(550)->setWidth(700)->setOffsetX(120)->setOffsetY(80); 
    $shape->getBorder()->setLineStyle(Border::LINE_SINGLE); 
    $shape->getTitle()->setText('PHPPresentation Daily Downloads'); 
    $shape->getTitle()->getFont()->setItalic(true); 
    $shape->getPlotArea()->setType($lineChart); 
    $shape->getView3D()->setRotationX(30); 
    $shape->getView3D()->setPerspective(30); 
    $shape->getLegend()->getBorder()->setLineStyle(Border::LINE_SINGLE); 
    $shape->getLegend()->getFont()->setItalic(true);

是否有系列类或线类，这有助于填补灯罩颜色的任何方法。请让我知道如何去翳

我想下面的图表类型为折线图面积