| QGIS API Documentation
    3.20.0-Odense (decaadbb31)
    | 
#include <math.h>#include "qgsmodelarrowitem.h"#include "qgsapplication.h"#include "qgsmodelgraphicsscene.h"#include "qgsmodelcomponentgraphicitem.h"#include <QPainter>#include <QApplication>#include <QPalette>