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#include "qgl3dsscene.h"

#include "qglscenenode.h"
#include "qgl3dsmesh.h"
#include "qgl3dsloader.h"

#include <lib3ds/file.h>

QT_BEGIN_NAMESPACE

/*!
    \internal
    \class QGL3dsScene
    \brief The QGL3dsScene class manages and contains a 3ds scene.
    The scene consists of a QGLSceneNode object which is the top-level node
    and references the geometry in a 3D Studio Max ".3ds" file.  That top
    level node references sub-nodes
*/

/*!
    \internal
    Construct a new QGL3dsScene object using the data in the \a file,
    and setting the given \a parent.  Resources are searched for at the
    given \a url.

    The QGL3dsScene object takes ownership of the \a file.
*/
QGL3dsScene::QGL3dsScene(Lib3dsFile *file, QGL3dsSceneHandler *h)
    : QGLAbstractScene(0)
    , mFile(file)
{
    Q_ASSERT(h);
    Q_ASSERT(file);
    QGL3dsLoader loader(file, h);
    mRootNode = loader.loadMeshes();
}

/*!
    \reimp
    Destroy this QGL3dsScene, recovering all resources.

    This method destroys the Lib3dsFile object the scene is based
    on by calling the appropriate lib3ds function.
*/
QGL3dsScene::~QGL3dsScene()
{
    lib3ds_file_free(mFile);
}

/*!
    \internal
    \reimp
*/
QList<QObject *> QGL3dsScene::objects() const
{
    QList<QObject *> objs;
    if (!mRootNode)
        return objs;
    objs.append(mRootNode);
    QList<QGLSceneNode*> children = mRootNode->allChildren();
    QList<QGLSceneNode*>::const_iterator it = children.constBegin();
    for ( ; it != children.constEnd(); ++it)
        objs.append(*it);
    return objs;
}

/*!
    \internal
    \reimp
*/
QGLSceneNode *QGL3dsScene::mainNode() const
{
    return mRootNode;
}

QT_END_NAMESPACE