diff options
Diffstat (limited to 'src/plugins/sceneformats/obj/qglobjscenehandler.cpp')
| -rw-r--r-- | src/plugins/sceneformats/obj/qglobjscenehandler.cpp | 468 |
1 files changed, 0 insertions, 468 deletions
diff --git a/src/plugins/sceneformats/obj/qglobjscenehandler.cpp b/src/plugins/sceneformats/obj/qglobjscenehandler.cpp deleted file mode 100644 index aea28126c..000000000 --- a/src/plugins/sceneformats/obj/qglobjscenehandler.cpp +++ /dev/null @@ -1,468 +0,0 @@ -/**************************************************************************** -** -** 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 "qglobjscenehandler.h" -#include "qglobjscene.h" -#include "qvector2darray.h" -#include "qvector3darray.h" -#include "qglbuilder.h" - -#include <QtCore/qiodevice.h> -#include <QtCore/qfile.h> -#include <QtGui/qimage.h> - -QT_BEGIN_NAMESPACE - -QGLObjSceneHandler::QGLObjSceneHandler() - : QGLSceneFormatHandler() - , smoothing(QGL::Faceted) - , smoothingForced(false) -{ -} - -// Documentation for OBJ and MTL files from: -// http://www.fileformat.info/format/wavefrontobj/egff.htm -// http://www.fileformat.info/format/material/ - -static int objSkipWS(const QByteArray& line, int posn) -{ - while (posn < line.size() && (line[posn] == ' ' || line[posn] == '\t')) - ++posn; - return posn; -} - -static int objSkipNonWS(const QByteArray& line, int posn, int stopch) -{ - while (posn < line.size() && - line[posn] != ' ' && line[posn] != '\t' && line[posn] != stopch) - ++posn; - return posn; -} - -static qreal objReadFloat(const QByteArray& line, int *posn) -{ - *posn = objSkipWS(line, *posn); - int end = objSkipNonWS(line, *posn, 0); - qreal value; - if (end > *posn) - value = qreal(line.mid(*posn, end - *posn).toDouble()); - else - value = 0.0f; - *posn = end; - return value; -} - -static int objReadInteger(const QByteArray& line, int *posn) -{ - *posn = objSkipWS(line, *posn); - int end = objSkipNonWS(line, *posn, '/'); - int value; - if (end > *posn) - value = line.mid(*posn, end - *posn).toInt(); - else - value = 0; - //*posn = objSkipNonWS(line, end, 0); - *posn = end; - return value; -} - -static int objReadSlashInteger(const QByteArray& line, int *posn) -{ - if (*posn >= line.size() || line[*posn] != '/') - return 0; - ++(*posn); - int end = objSkipNonWS(line, *posn, '/'); - int value; - if (end > *posn) - value = line.mid(*posn, end - *posn).toInt(); - else - value = 0; - //*posn = objSkipNonWS(line, end, 0); - *posn = end; - return value; -} - -static QColor objReadColor(const QByteArray& line, int posn) -{ - qreal red = objReadFloat(line, &posn); - qreal green = objReadFloat(line, &posn); - qreal blue = objReadFloat(line, &posn); - qreal alpha = 1.0f; - posn = objSkipWS(line, posn); - if (posn < line.size()) - alpha = objReadFloat(line, &posn); - return QColor::fromRgbF(red, green, blue, alpha); -} - -void QGLObjSceneHandler::decodeOptions(const QString &options) -{ - if (options.contains(QLatin1String("ForceSmooth"))) - { - smoothingForced = true; - smoothing = QGL::Smooth; - } - else - { - smoothingForced = true; - smoothing = QGL::Faceted; - } -} - -QGLAbstractScene *QGLObjSceneHandler::read() -{ - QByteArray line; - QByteArray keyword; - int posn, index, count; - int tindex, nindex; - QVector3DArray positions; - QVector2DArray texCoords; - QVector3DArray normals; - qreal x, y, z; - quint32 fields = 0; - QGLMaterial *material = 0; - QGLSceneNode *defaultNode; - - // Create the geometry builder and start an initial Faceted section. - QGLBuilder builder; - builder.newSection(smoothing); - QGLSceneNode *root = builder.sceneNode(); - palette = root->palette(); - defaultNode = root; - defaultNode->setObjectName(QLatin1String("__main")); - builder.pushNode(); - - QGeometryData op; - while (!device()->atEnd()) { - // Read the next line, including any backslash continuations. - line = device()->readLine().trimmed(); - while (line.endsWith('\\')) { - line.truncate(line.size() - 1); - if (device()->atEnd()) - break; - line += device()->readLine().trimmed(); - } - if (line.startsWith('#') || line.isEmpty()) - continue; // Skip comments and blank lines. - - // Extract the keyword at the start of the line. - posn = 0; - while (posn < line.size() && - line[posn] != ' ' && line[posn] != '\t') - ++posn; - keyword = line.left(posn); - - // Determine how to process this line from the keyword. - if (keyword == "v") { - x = objReadFloat(line, &posn); - y = objReadFloat(line, &posn); - z = objReadFloat(line, &posn); - positions.append(x, y, z); - } else if (keyword == "vt") { - x = objReadFloat(line, &posn); - y = objReadFloat(line, &posn); - texCoords.append(x, y); - } else if (keyword == "vn") { - x = objReadFloat(line, &posn); - y = objReadFloat(line, &posn); - z = objReadFloat(line, &posn); - normals.append(x, y, z); - } else if (keyword == "f") { - posn = objSkipWS(line, posn); - count = 0; - //QGeometryData op; //(dlist, QGL::TRIANGLE_FAN); - op = QGeometryData(); // clear leaves field definitions - while (posn < line.size()) { - // Note: we currently only read the initial vertex - // index and also use it for texture co-ordinates - // and normals. e.g. "2/2", "3/3", etc. This will - // need to be fixed to handle "2/1", "3/7", etc. - index = objReadInteger(line, &posn); - tindex = objReadSlashInteger(line, &posn); - nindex = objReadSlashInteger(line, &posn); - if (index < 0) - index = positions.count() + index; - else if (index > 0) - --index; // Indices in obj are 1-based. - if (index >= 0 && index < positions.count()) - op.appendVertex(positions[index]); - if (tindex < 0) - tindex = texCoords.count() + tindex; - else if (tindex > 0) - --tindex; // Indices in obj are 1-based. - else - tindex = -1; - if (tindex >= 0 && tindex < texCoords.count()) - op.appendTexCoord(texCoords[tindex]); - if (nindex < 0) - nindex = normals.count() + nindex; - else if (nindex > 0) - --nindex; // Indices in obj are 1-based. - else - nindex = -1; - if (nindex >= 0 && nindex < normals.count()) - op.appendNormal(normals[nindex]); - ++count; - posn = objSkipNonWS(line, posn, 0); - posn = objSkipWS(line, posn); - } - // if geometry has already been added with a different combination - // of fields start a new section - // the primitive doesn't get posted to the section until op.end() - if (op.fields() != fields) - { - if (fields && builder.currentNode()->count() > 0) - builder.newSection(smoothing); - fields = op.fields(); - } - builder.addTriangleFan(op); - } else if (keyword == "usemtl") { - // Specify a material for the faces that follow. - posn = objSkipWS(line, posn); - QByteArray rest = line.mid(posn); - QString materialName = QString::fromLocal8Bit(rest.constData(), rest.size()); - if (!materialName.isEmpty() && - materialName != QLatin1String("(null)")) { - index = palette->indexOf(materialName); - if (index != -1) { - QGLSceneNode *node = builder.newNode(); - node->setMaterialIndex(index); - QGLMaterial *material = palette->material(index); - if (material->texture()) - node->setEffect(QGL::LitDecalTexture2D); - else - node->setEffect(QGL::LitMaterial); - } else { - qWarning() << "obj material" << materialName << "not found"; - material = 0; - } - } - } else if (keyword == "mtllib") { - // Load a material library. - posn = objSkipWS(line, posn); - QByteArray filename = line.mid(posn); - loadMaterialLibrary(QString::fromLocal8Bit(filename.constData(), filename.size())); - } else if (keyword == "s") { - if (!smoothingForced) - { - // Set smoothing on or off. - posn = objSkipWS(line, posn); - index = objSkipNonWS(line, posn, 0); - QByteArray arg = line.mid(posn, index - posn); - QGL::Smoothing smooth; - if (arg == "on" || arg == "1") - smooth = QGL::Smooth; - else - smooth = QGL::Faceted; - if (smoothing != smooth) { - smoothing = smooth; - builder.newSection(smooth); - } - } - } else if (keyword == "g" || keyword == "o") { - // Label the faces that follow as part of a named group or object. - posn = objSkipWS(line, posn); - QByteArray rest = line.mid(posn); - QString objectName = QString::fromLocal8Bit(rest.constData(), rest.size()); - QGLSceneNode *node = builder.currentNode(); - // if content has already been added to a current group, then - // create a new node in the scene graph for the group, otherwise - // just label the existing group with this name - QGLSceneNode *p = qobject_cast<QGLSceneNode*>(node->parent()); - if (node->count() > 0 && p && p->objectName().isEmpty()) - { - node = p; - } - else - { - builder.popNode(); - node = builder.currentNode(); - builder.pushNode(); - } - node->setObjectName(objectName); - } else { - qWarning() << "unsupported obj command: " << keyword.constData(); - } - } - - // Create a scene from the geometry - return new QGLObjScene(builder.finalizedSceneNode()); -} - -QGLAbstractScene *QGLObjSceneHandler::download() -{ - qWarning() << "Network loading of obj files using this plugin is not implemented."; - return NULL; -} - -void QGLObjSceneHandler::loadMaterialLibrary(const QString& name) -{ - QUrl materialUrl = url().resolved(name); - if (materialUrl.scheme() == QLatin1String("file")) { - QFile file(materialUrl.toLocalFile()); - if (!file.open(QIODevice::ReadOnly)) - qWarning() << "QGLObjSceneHandler::loadMaterialLibrary: could not open:" << materialUrl.toLocalFile(); - else - loadMaterials(&file); - } else { - // TODO - qWarning("QGLObjSceneHandler::loadMaterialLibrary: non-file urls not supported"); - } -} - -void QGLObjSceneHandler::loadMaterials(QIODevice *device) -{ - QByteArray line; - QByteArray keyword; - int posn, index; - QGLMaterial *material = 0; - QString materialName; - QString textureName; - - while (!device->atEnd()) { - // Read the next line, including any backslash continuations. - line = device->readLine().trimmed(); - while (line.endsWith('\\')) { - line.truncate(line.size() - 1); - if (device->atEnd()) - break; - line += device->readLine().trimmed(); - } - if (line.startsWith('#') || line.isEmpty()) - continue; // Skip comments and blank lines. - - // Extract the keyword at the start of the line. - posn = 0; - while (posn < line.size() && - line[posn] != ' ' && line[posn] != '\t') - ++posn; - keyword = line.left(posn); - - // Determine how to process this line from the keyword. - if (keyword == "newmtl") { - // Start a new material definition. - posn = objSkipWS(line, posn); - QByteArray rest = line.mid(posn); - materialName = QString::fromLocal8Bit(rest.constData(), rest.size()); - index = palette->indexOf(materialName); - if (index != -1) { - qWarning() << "redefining obj material:" << materialName; - material = palette->material(index); - } else { - material = new QGLMaterial(); - material->setObjectName(materialName); - palette->addMaterial(material); - } - } else if (keyword == "Ka") { - // Ambient color of the material. - if (material) - material->setAmbientColor(objReadColor(line, posn)); - } else if (keyword == "Kd") { - // Diffuse color of the material. - if (material) - material->setDiffuseColor(objReadColor(line, posn)); - } else if (keyword == "Ks") { - // Specular color of the material. - if (material) - material->setSpecularColor(objReadColor(line, posn)); - } else if (keyword == "map_Kd") { - // Texture associated with the material. - posn = objSkipWS(line, posn); - QByteArray rest = line.mid(posn); - textureName = QString::fromLocal8Bit(rest.constData(), rest.size()); - QGLTexture2D *texture = loadTexture(textureName); - if (texture) { - index = palette->indexOf(materialName); - if (index >= 0) { - QGLMaterial *material = palette->material(index); - texture->setParent(material); - material->setTexture(texture); - } else { - delete texture; - } - } - } else if (keyword == "d") { - // "Dissolve factor" of the material, which is its opacity. - if (material) { - qreal alpha = objReadFloat(line, &posn); - QColor ambient = material->ambientColor(); - QColor diffuse = material->diffuseColor(); - ambient.setAlphaF(alpha); - diffuse.setAlphaF(alpha); - material->setAmbientColor(ambient); - material->setDiffuseColor(diffuse); - } - } else if (keyword == "Ns") { - // Specular exponent of the material. - if (material) - material->setShininess(qRound(objReadFloat(line, &posn))); - } else if (keyword == "illum") { - // Illumination model - ignored at present. - } else if (keyword == "Ni") { - // Optical density - ignored at present. - } else { - qWarning() << "unsupported obj material command: " << keyword.constData(); - } - } -} - -QGLTexture2D *QGLObjSceneHandler::loadTexture(const QString& name) -{ - QUrl textureUrl = url().resolved(name); - if (textureUrl.scheme() == QLatin1String("file")) { - QFile file(textureUrl.toLocalFile()); - if (!file.open(QIODevice::ReadOnly)) { - qWarning() << "QGLObjSceneHandler::loadTexture: could not open:" << textureUrl.toLocalFile(); - return 0; - } else { - file.close(); - QImage image(textureUrl.toLocalFile()); - QGLTexture2D *tex = new QGLTexture2D(); - tex->setImage(image); - return tex; - } - } else { - // TODO - qWarning("QGLObjSceneHandler::loadTexture: non-file urls not supported"); - return 0; - } -} - -QT_END_NAMESPACE |