qscene.cpp

#include "qscene.h"

QScene::QScene(QObject * parent) :
    QGraphicsScene(parent)
{

}

void QScene::removeItem(QBox2DItem *item){
    QGraphicsScene::removeItem(item->graphics());
}

void QScene::addItem(QBox2DItem *item){
    qDebug()<<"Add an Item";
    const b2Shape *s = item->body()->GetFixtureList()->GetShape();
    if (!s) return;

    b2Shape::Type shapeType = s->GetType();
    QAbstractGraphicsShapeItem *graphics;

    if (shapeType == b2Shape::e_polygon){

        const b2PolygonShape* shape = static_cast<const b2PolygonShape*>(s);
        QPolygonF polygon;

        for (int32 i = 0; i< shape->GetVertexCount(); ++i){
            b2Vec2 v = shape->GetVertex(i);
            polygon.append(QPointF(v.x,v.y));
        }

        graphics = new QGraphicsPolygonItem(polygon);
    }
    else if (shapeType == b2Shape::e_circle){

        const b2CircleShape* shape = static_cast<const b2CircleShape*>(s);
        float32 radius = shape->m_radius;
        QRectF rect(-radius, -radius, radius*2, radius*2);

        graphics = new QGraphicsEllipseItem(rect);
    }

    graphics->setPos( item->position().x, item->position().y);
    graphics->setRotation(RAD2ANG(item->rotation()));
    graphics->setBrush(item->color());
    item->setGraphics(graphics);

    QGraphicsScene::addItem(graphics);

}