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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the QtDataVis3D module.
**
** Licensees holding valid Qt Enterprise licenses may use this file in
** accordance with the Qt Enterprise License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
**
****************************************************************************/
#include "meshloader_p.h"
#include "vertexindexer_p.h"
#include "objecthelper_p.h"
#include "abstractobjecthelper_p.h"
#include <QDebug>
QT_DATAVIS3D_BEGIN_NAMESPACE
ObjectHelper::ObjectHelper(const QString &objectFile)
: m_objectFile(objectFile)
{
m_indicesType = GL_UNSIGNED_SHORT;
}
ObjectHelper::~ObjectHelper()
{
}
void ObjectHelper::setObjectFile(const QString &objectFile)
{
m_objectFile = objectFile;
}
void ObjectHelper::load()
{
initializeOpenGLFunctions();
if (m_meshDataLoaded) {
// Delete old data
glDeleteBuffers(1, &m_vertexbuffer);
glDeleteBuffers(1, &m_uvbuffer);
glDeleteBuffers(1, &m_normalbuffer);
glDeleteBuffers(1, &m_elementbuffer);
}
QVector<QVector3D> vertices;
QVector<QVector2D> uvs;
QVector<QVector3D> normals;
bool loadOk = MeshLoader::loadOBJ(m_objectFile, vertices, uvs, normals);
if (!loadOk)
qFatal("loading failed");
//qDebug() << "vertex count" << vertices.size();;
// Index vertices
QVector<unsigned short> indices;
QVector<QVector3D> indexed_vertices;
QVector<QVector2D> indexed_uvs;
QVector<QVector3D> indexed_normals;
VertexIndexer::indexVBO(vertices, uvs, normals, indices, indexed_vertices, indexed_uvs,
indexed_normals);
m_indexCount = indices.size();
//qDebug() << "index count" << m_indexCount;
glGenBuffers(1, &m_vertexbuffer);
glBindBuffer(GL_ARRAY_BUFFER, m_vertexbuffer);
glBufferData(GL_ARRAY_BUFFER, indexed_vertices.size() * sizeof(QVector3D),
&indexed_vertices.at(0),
GL_STATIC_DRAW);
glGenBuffers(1, &m_normalbuffer);
glBindBuffer(GL_ARRAY_BUFFER, m_normalbuffer);
glBufferData(GL_ARRAY_BUFFER, indexed_normals.size() * sizeof(QVector3D),
&indexed_normals.at(0),
GL_STATIC_DRAW);
glGenBuffers(1, &m_uvbuffer);
glBindBuffer(GL_ARRAY_BUFFER, m_uvbuffer);
glBufferData(GL_ARRAY_BUFFER, indexed_uvs.size() * sizeof(QVector2D),
&indexed_uvs.at(0), GL_STATIC_DRAW);
glGenBuffers(1, &m_elementbuffer);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_elementbuffer);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, indices.size() * sizeof(unsigned short),
&indices.at(0), GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
m_meshDataLoaded = true;
}
QT_DATAVIS3D_END_NAMESPACE
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