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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtQuick3D 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 "qaimesh.h"
#include "qglscenenode.h"
#include "qglmaterialcollection.h"
#include "qglbuilder.h"
#include <QtGui/qmatrix4x4.h>
#include <QtCore/qmath.h>
#include "aiMesh.h"
#include "DefaultLogger.h"
QAiMesh::QAiMesh(aiMesh *mesh)
: m_mesh(mesh)
{
}
QAiMesh::~QAiMesh()
{
}
static inline QVector2D qv2d(const aiVector3D &v)
{
return QVector2D(v.x, v.y);
}
static inline QVector2D qv2d_inv(const aiVector3D &v)
{
// invert the v coord because Qt is upside-down
return QVector2D(v.x, (1.0 - v.y));
}
static inline QVector3D qv3d(const aiVector3D &v)
{
return QVector3D(v.x, v.y, v.z);
}
void QAiMesh::loadTriangles(QGLBuilder &builder)
{
QGeometryData data;
for (unsigned int i = 0; i < m_mesh->mNumVertices; ++i)
data.appendVertex(qv3d(m_mesh->mVertices[i]));
if (m_mesh->HasNormals())
for (unsigned int i = 0; i < m_mesh->mNumVertices; ++i)
data.appendNormal(qv3d(m_mesh->mNormals[i]));
int k = m_mesh->GetNumUVChannels();
for (int t = 0; t < k; ++t)
{
if (m_mesh->mNumUVComponents[t] != 2)
Assimp::DefaultLogger::get()->warn("Tex co-ords only supports U & V");
QGLMaterial *m = builder.currentNode()->material();
if (m && m->textureUrl().path().endsWith(".dds", Qt::CaseInsensitive))
{
for (unsigned int i = 0; i < m_mesh->mNumVertices; ++i)
data.appendTexCoord(qv2d_inv(m_mesh->mTextureCoords[t][i]), static_cast<QGL::VertexAttribute>(QGL::TextureCoord0 + t));
}
else
{
for (unsigned int i = 0; i < m_mesh->mNumVertices; ++i)
data.appendTexCoord(qv2d(m_mesh->mTextureCoords[t][i]), static_cast<QGL::VertexAttribute>(QGL::TextureCoord0 + t));
}
}
for (unsigned int i = 0; i < m_mesh->mNumFaces; ++i)
{
aiFace *face = &m_mesh->mFaces[i];
data.appendIndices(face->mIndices[0], face->mIndices[1], face->mIndices[2]);
}
// raw triangle mode
builder.addTriangles(data);
}
void QAiMesh::build(QGLBuilder &builder, bool showWarnings)
{
QGLSceneNode *node = builder.currentNode();
QString name = node->objectName();
if (!m_mesh->HasFaces() || !m_mesh->HasPositions())
{
if (showWarnings)
{
QString error = QLatin1String("Mesh %1 has zero vertex/face count");
error.arg(name.isEmpty() ? QString(QLatin1String("<unnamed mesh>")) : name);
Assimp::DefaultLogger::get()->warn(qPrintable(error));
}
return;
}
node->setMaterialIndex(m_mesh->mMaterialIndex);
node->palette()->markMaterialAsUsed(m_mesh->mMaterialIndex);
if (m_mesh->mPrimitiveTypes & aiPrimitiveType_TRIANGLE)
loadTriangles(builder);
else
return; // TODO - lines, points, quads, polygons
QGLMaterial * mat = node->palette()->material(m_mesh->mMaterialIndex);
if (mat->property("isTwoSided").isValid() && mat->property("isTwoSided").toBool())
node->setBackMaterialIndex(m_mesh->mMaterialIndex);
if (mat->property("isWireFrame").isValid() && mat->property("isWireFrame").toBool())
node->setDrawingMode(QGL::Lines);
}
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