diff options
author | Tomi Korpipää <tomi.korpipaa@digia.com> | 2013-09-10 11:42:13 +0300 |
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committer | Tomi Korpipää <tomi.korpipaa@digia.com> | 2013-09-10 12:04:24 +0300 |
commit | a28cdb72a4ea768a898ca07f0df0fa3c17c073a8 (patch) | |
tree | 0bafdcfa99fc783e9f5204539a8242bf6128d795 /src/datavisualization/utils/meshloader.cpp | |
parent | f3e38983d77c72f3121c33a149a58fdf9c64158c (diff) |
Module renamed
Task-number: QTRD-2224
Change-Id: Iec18b6121809300b11d85445281d3c626c434f35
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@digia.com>
Diffstat (limited to 'src/datavisualization/utils/meshloader.cpp')
-rw-r--r-- | src/datavisualization/utils/meshloader.cpp | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/src/datavisualization/utils/meshloader.cpp b/src/datavisualization/utils/meshloader.cpp new file mode 100644 index 00000000..119cde3a --- /dev/null +++ b/src/datavisualization/utils/meshloader.cpp @@ -0,0 +1,125 @@ +/**************************************************************************** +** +** 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 QtDataVisualization 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 <QFile> +#include <QStringList> +#include <QVector> +#include <QVector2D> +#include <QVector3D> + +#include <QDebug> + +QT_DATAVISUALIZATION_BEGIN_NAMESPACE + +QString slashTag = QStringLiteral("/"); + +bool MeshLoader::loadOBJ(const QString &path, + QVector<QVector3D> &out_vertices, + QVector<QVector2D> &out_uvs, + QVector<QVector3D> &out_normals) +{ + //qDebug() << "Loading OBJ file" << path; + + QVector<unsigned int> vertexIndices, uvIndices, normalIndices; + QVector<QVector3D> temp_vertices; + QVector<QVector2D> temp_uvs; + QVector<QVector3D> temp_normals; + + QFile file(path); + if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) { + qWarning("Cannot open the file"); + return false; + } + + QTextStream textIn(&file); + while (!textIn.atEnd()) { + QString line = textIn.readLine(); + QStringList lineContents = line.split(QStringLiteral(" ")); + if (!lineContents.at(0).compare(QStringLiteral("v"))) { + QVector3D vertex; + vertex.setX(lineContents.at(1).toFloat()); + vertex.setY(lineContents.at(2).toFloat()); + vertex.setZ(lineContents.at(3).toFloat()); + temp_vertices.append(vertex); + } + else if (!lineContents.at(0).compare(QStringLiteral("vt"))) { + QVector2D uv; + uv.setX(lineContents.at(1).toFloat()); + uv.setY(lineContents.at(2).toFloat()); // invert this if using DDS textures + temp_uvs.append(uv); + } + else if (!lineContents.at(0).compare(QStringLiteral("vn"))) { + QVector3D normal; + normal.setX(lineContents.at(1).toFloat()); + normal.setY(lineContents.at(2).toFloat()); + normal.setZ(lineContents.at(3).toFloat()); + temp_normals.append(normal); + } + else if (!lineContents.at(0).compare(QStringLiteral("f"))) { + unsigned int vertexIndex[3], uvIndex[3], normalIndex[3]; + QStringList set1 = lineContents.at(1).split(slashTag); + QStringList set2 = lineContents.at(2).split(slashTag); + QStringList set3 = lineContents.at(3).split(slashTag); + vertexIndex[0] = set1.at(0).toUInt(); + vertexIndex[1] = set2.at(0).toUInt(); + vertexIndex[2] = set3.at(0).toUInt(); + uvIndex[0] = set1.at(1).toUInt(); + uvIndex[1] = set2.at(1).toUInt(); + uvIndex[2] = set3.at(1).toUInt(); + normalIndex[0] = set1.at(2).toUInt(); + normalIndex[1] = set2.at(2).toUInt(); + normalIndex[2] = set3.at(2).toUInt(); + vertexIndices.append(vertexIndex[0]); + vertexIndices.append(vertexIndex[1]); + vertexIndices.append(vertexIndex[2]); + uvIndices.append(uvIndex[0]); + uvIndices.append(uvIndex[1]); + uvIndices.append(uvIndex[2]); + normalIndices.append(normalIndex[0]); + normalIndices.append(normalIndex[1]); + normalIndices.append(normalIndex[2]); + } + else { + //qWarning("Line did not contain usable data"); + } + } + + // For each vertex of each triangle + for (int i = 0; i < vertexIndices.size(); i++) { + // Get the indices of its attributes + unsigned int vertexIndex = vertexIndices[i]; + unsigned int uvIndex = uvIndices[i]; + unsigned int normalIndex = normalIndices[i]; + + // Get the attributes thanks to the index + QVector3D vertex = temp_vertices[vertexIndex - 1]; + QVector2D uv = temp_uvs[uvIndex - 1]; + QVector3D normal = temp_normals[normalIndex - 1]; + + // Put the attributes in buffers + out_vertices.append(vertex); + out_uvs.append(uv); + out_normals.append(normal); + } + + return true; +} + +QT_DATAVISUALIZATION_END_NAMESPACE |