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Diffstat (limited to 'src/utils/objecthelper.cpp')
| -rw-r--r-- | src/utils/objecthelper.cpp | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/src/utils/objecthelper.cpp b/src/utils/objecthelper.cpp new file mode 100644 index 00000000..6659a187 --- /dev/null +++ b/src/utils/objecthelper.cpp @@ -0,0 +1,165 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the QtDataVis3D module. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, 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, Digia gives you certain additional +** rights. These rights are described in the Digia 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. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "meshloader_p.h" +#include "vertexindexer_p.h" +#include "objecthelper_p.h" + +#include <QDebug> + +QTCOMMERCIALDATAVIS3D_BEGIN_NAMESPACE + +ObjectHelper::ObjectHelper(const QString &objectFile) + : m_objectFile(objectFile), + m_vertexbuffer(0), + m_normalbuffer(0), + m_uvbuffer(0), + m_elementbuffer(0), + m_indexCount(0), + m_meshDataLoaded(false) +{ + initializeOpenGLFunctions(); +} + +ObjectHelper::~ObjectHelper() +{ + glDeleteBuffers(1, &m_vertexbuffer); + glDeleteBuffers(1, &m_uvbuffer); + glDeleteBuffers(1, &m_normalbuffer); + glDeleteBuffers(1, &m_elementbuffer); +} + +void ObjectHelper::setObjectFile(const QString &objectFile) +{ + m_objectFile = objectFile; +} + +void ObjectHelper::load() +{ + 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; +} + +GLuint ObjectHelper::vertexBuf() +{ + if (!m_meshDataLoaded) + qFatal("No loaded object"); + return m_vertexbuffer; +} + +GLuint ObjectHelper::normalBuf() +{ + if (!m_meshDataLoaded) + qFatal("No loaded object"); + return m_normalbuffer; +} + +GLuint ObjectHelper::uvBuf() +{ + if (!m_meshDataLoaded) + qFatal("No loaded object"); + return m_uvbuffer; +} + +GLuint ObjectHelper::elementBuf() +{ + if (!m_meshDataLoaded) + qFatal("No loaded object"); + return m_elementbuffer; +} + +GLuint ObjectHelper::indexCount() +{ + return m_indexCount; +} + +QTCOMMERCIALDATAVIS3D_END_NAMESPACE |