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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qaiscene.h"
#include "qaimesh.h"
#include "qailoader.h"
#include "qglscenenode.h"
QT_BEGIN_NAMESPACE
/*!
\internal
\class QAiScene
\brief The QAiScene class manages and contains an asset importer scene.
The scene consists of a QGLSceneNode object which is the top-level node
and references the geometry imported from a file.
*/
/*!
\internal
Construct a new QAiScene object using the data in the \a scene,
and setting the given \a parent.
The QAiScene object takes ownership of the \a file.
*/
const int g_MaxLevel = 16;
char g_Buffer[1 + g_MaxLevel*2];
void DumpSceneNode(int level, QGLSceneNode* pNode)
{
if (pNode) {
if (level > g_MaxLevel)
level = g_MaxLevel;
memset(g_Buffer,' ',level*2);
g_Buffer[level*2] = '\0';
qDebug("%snode(%p) name='%s'",g_Buffer,pNode,pNode->objectName().toLatin1().constData());
if (!pNode->localTransform().isIdentity()) {
qDebug("%s transform",g_Buffer);
}
if (pNode->count() > 0) {
qDebug("%s geometry",g_Buffer);
}
foreach (QGLSceneNode* pChild, pNode->children()) {
DumpSceneNode(level+1, pChild);
}
}
}
void DumpAnimations(const QList<QGLSceneAnimation *>& rAnimations)
{
foreach (QGLSceneAnimation* pAnim, rAnimations) {
qDebug("animation '%s':",pAnim->name().toLatin1().constData());
QList<QString> nodes = pAnim->affectedNodes();
foreach (QString node, nodes) {
qDebug(" affects node '%s'",node.toLatin1().constData());
}
}
}
void DumpDefaultTransforms(const QMap<QGLSceneNode*,QGLSceneAnimation::NodeTransform>& rDefaultTransforms)
{
for (QMap<QGLSceneNode*,QGLSceneAnimation::NodeTransform>::const_iterator It=rDefaultTransforms.begin(); It!=rDefaultTransforms.end(); ++It) {
qDebug("got default transform for node '%s'",It.key()->objectName().toLatin1().constData());
}
}
QAiScene::QAiScene(const aiScene *scene, QAiSceneHandler *handler)
: QGLAbstractScene(0)
{
Q_ASSERT(handler);
Q_ASSERT(scene);
QAiLoader loader(scene, handler);
m_root = loader.loadMeshes();
m_root->setParent(this);
getAnimations() = loader.loadAnimations();
getDefaultTransformations() = loader.loadDefaultTransformations();
foreach (QGLSceneAnimation* pAnim, getAnimations()) {
pAnim->setParent(this);
QObject::connect(pAnim,SIGNAL(positionChanged()),this,SLOT(processAnimations()));
}
qDebug("=======================================");
qDebug("loaded scene:");
DumpSceneNode(1,m_root);
DumpAnimations(getAnimations());
DumpDefaultTransforms(getDefaultTransformations());
qDebug("=======================================");
m_aiLoader = 0;
}
/*!
\internal
Construct a new QAiScene object and setting the given \a handler.
Note that the scene which will be used to generate the QAiScene has
not been added yet - this is used in the network case and requires
a later call to the loadScene function to work correctly
\sa loadScene()
*/
QAiScene::QAiScene(QAiSceneHandler *handler)
: QGLAbstractScene(0)
{
Q_ASSERT(handler);
//create a temporary loader and get a temporary root node for the scene.
m_aiLoader = new QAiLoader(0, handler);
m_root=m_aiLoader->m_builder.sceneNode();
}
/*!
\internal
\reimp
Destroy this QAiScene, recovering all resources.
*/
QAiScene::~QAiScene()
{
delete m_aiLoader;
}
/*!
\internal
\reimp
*/
QList<QObject *> QAiScene::objects() const
{
QList<QObject *> objs;
if (!m_root)
return objs;
objs.append(m_root);
QList<QGLSceneNode*> children = m_root->allChildren();
QList<QGLSceneNode*>::const_iterator it = children.constBegin();
for ( ; it != children.constEnd(); ++it)
objs.append(*it);
return objs;
}
/*!
\internal
\reimp
*/
QGLSceneNode *QAiScene::mainNode() const
{
return m_root;
}
/*!
\internal
Returns the aiLoader associated with the scene (if any).
*/
QAiLoader * QAiScene::aiLoader() const
{
return m_aiLoader;
}
/*!
\internal
Load the new \a scene and swap the extant palette from the temporary roote
node into the current root node.
The QAiScene object takes ownership of the \a file.
*/
void QAiScene::loadScene(const aiScene *scene)
{
Q_ASSERT(scene);
//Get the old material information
QSharedPointer<QGLMaterialCollection>oldPalette= m_aiLoader->m_builder.palette();
int oldIndex = m_root->materialIndex();
//Reset the palette for the root node.
QSharedPointer<QGLMaterialCollection>newPalette = QSharedPointer<QGLMaterialCollection>(new QGLMaterialCollection());
m_aiLoader->m_builder.sceneNode()->setPalette(newPalette);
m_aiLoader->m_scene = scene;
//Commence loading of the mesh.
m_root = m_aiLoader->loadMeshes(); //this won't actually change the root unless we've messed up.
delete m_aiLoader;
m_aiLoader = 0;
//Swap out the materials palette
int indexCount=0;
int materialCount=0;
QGLMaterial * currentMaterial = NULL;
do {
currentMaterial = oldPalette->removeMaterial(indexCount);
if (currentMaterial) {
materialCount = m_root->palette()->addMaterial(currentMaterial);
indexCount++;
}
} while (currentMaterial);
m_root->setMaterialIndex(materialCount-(indexCount-1)+oldIndex);
//update picking nodes for the whole scene if needed
if (pickable()) generatePickNodes();
emit sceneUpdated();
}
QT_END_NAMESPACE
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