closes https://github.com/assimp/assimp/issues/2019: fix the qt-viewer without export.

code/ColladaHelper.h

@@ -272,12 +272,13 @@ struct Node
     /** Node instances at this node */
     std::vector<NodeInstance> mNodeInstances;
 
-    /** Rootnodes: Name of primary camera, if any */
+    /** Root-nodes: Name of primary camera, if any */
     std::string mPrimaryCamera;
 
     //! Constructor. Begin with a zero parent
-    Node() {
+    Node()
-        mParent = NULL;
+    : mParent( nullptr ){
+        // empty
     }
 
     //! Destructor: delete all children subsequently

code/ColladaLoader.cpp

@@ -201,6 +201,7 @@ void ColladaLoader::InternReadFile( const std::string& pFile, aiScene* pScene, I
                 0, -1,  0,  0,
                 0,  0,  0,  1);
     }
+
     // store all meshes
     StoreSceneMeshes( pScene);
 
@@ -740,10 +741,6 @@ aiMesh* ColladaLoader::CreateMesh( const ColladaParser& pParser, const Collada::
     // create bones if given
     if( pSrcController && pSrcController->mType == Collada::Skin)
     {
-        // refuse if the vertex count does not match
-//      if( pSrcController->mWeightCounts.size() != dstMesh->mNumVertices)
-//          throw DeadlyImportError( "Joint Controller vertex count does not match mesh vertex count");
-
         // resolve references - joint names
         const Collada::Accessor& jointNamesAcc = pParser.ResolveLibraryReference( pParser.mAccessorLibrary, pSrcController->mJointNameSource);
         const Collada::Data& jointNames = pParser.ResolveLibraryReference( pParser.mDataLibrary, jointNamesAcc.mSource);
@@ -971,7 +968,8 @@ void ColladaLoader::StoreAnimations( aiScene* pScene, const ColladaParser& pPars
             for( size_t b = a+1; b < mAnims.size(); ++b)
             {
                 aiAnimation* other = mAnims[b];
-                if( other->mNumChannels == 1 && other->mDuration == templateAnim->mDuration && other->mTicksPerSecond == templateAnim->mTicksPerSecond )
+                if( other->mNumChannels == 1 && other->mDuration == templateAnim->mDuration && 
+                        other->mTicksPerSecond == templateAnim->mTicksPerSecond )
                     collectedAnimIndices.push_back( b);
             }
 

code/ColladaParser.cpp

@@ -68,7 +68,7 @@ using namespace Assimp::Formatter;
 // Constructor to be privately used by Importer
 ColladaParser::ColladaParser( IOSystem* pIOHandler, const std::string& pFile)
     : mFileName( pFile )
-    , mReader( NULL )
+    , mReader( nullptr )
     , mDataLibrary()
     , mAccessorLibrary()
     , mMeshLibrary()
@@ -79,20 +79,20 @@ ColladaParser::ColladaParser( IOSystem* pIOHandler, const std::string& pFile)
     , mLightLibrary()
     , mCameraLibrary()
     , mControllerLibrary()
-    , mRootNode( NULL )
+    , mRootNode( nullptr )
     , mAnims()
     , mUnitSize( 1.0f )
     , mUpDirection( UP_Y )
     , mFormat(FV_1_5_n )    // We assume the newest file format by default
 {
     // validate io-handler instance
-    if ( NULL == pIOHandler ) {
+    if (nullptr == pIOHandler ) {
         throw DeadlyImportError("IOSystem is NULL." );
     }
 
     // open the file
     std::unique_ptr<IOStream> file( pIOHandler->Open(pFile ) );
-    if (file.get() == NULL) {
+    if (file.get() == nullptr) {
         throw DeadlyImportError( "Failed to open file " + pFile + "." );
     }
 
@@ -363,9 +363,9 @@ void ColladaParser::ReadAnimationClipLibrary()
 
 void ColladaParser::PostProcessControllers()
 {
-  for (ControllerLibrary::iterator it = mControllerLibrary.begin(); it != mControllerLibrary.end(); ++it)
+    std::string meshId;
-  {
+    for (ControllerLibrary::iterator it = mControllerLibrary.begin(); it != mControllerLibrary.end(); ++it) {
-    std::string meshId = it->second.mMeshId;
+        meshId = it->second.mMeshId;
         ControllerLibrary::iterator findItr = mControllerLibrary.find(meshId);
         while(findItr != mControllerLibrary.end()) {
             meshId = findItr->second.mMeshId;

tools/assimp_qt_viewer/glview.cpp

@@ -1261,9 +1261,10 @@ void CGLView::Camera_Set(const size_t pCameraNumber)
 	gluLookAt(hcam.Position.x, hcam.Position.y, hcam.Position.z, hcam.Target.x, hcam.Target.y, hcam.Target.z, up.x, up.y, up.z);
 }
 
-void CGLView::Camera_RotateScene(const GLfloat pAngle_X, const GLfloat pAngle_Y, const GLfloat pAngle_Z, const aiMatrix4x4* pMatrix_Rotation_Initial)
+void CGLView::Camera_RotateScene(const GLfloat pAngle_X, const GLfloat pAngle_Y, const GLfloat pAngle_Z, const aiMatrix4x4* pMatrix_Rotation_Initial) {
-{
+    auto deg2rad = [](const GLfloat pDegree) -> GLfloat { 
-auto deg2rad = [](const GLfloat pDegree) -> GLfloat { return pDegree * M_PI / 180.0; };
+        return pDegree * AI_MATH_PI / 180.0;
+    };
 
 	aiMatrix4x4 mat_rot;
 
@@ -1276,7 +1277,7 @@ auto deg2rad = [](const GLfloat pDegree) -> GLfloat { return pDegree * M_PI / 18
 
 void CGLView::Camera_Rotate(const GLfloat pAngle_X, const GLfloat pAngle_Y, const GLfloat pAngle_Z, const aiMatrix4x4* pMatrix_Rotation_Initial)
 {
-auto deg2rad = [](const GLfloat pDegree) -> GLfloat { return pDegree * M_PI / 180.0; };
+    auto deg2rad = [](const GLfloat pDegree) -> GLfloat { return pDegree * AI_MATH_PI / 180.0; };
 
 	aiMatrix4x4 mat_rot;
 

tools/assimp_qt_viewer/mainwindow.cpp

@@ -133,8 +133,7 @@ void MainWindow::LogError(const QString& pMessage)
 void MainWindow::mousePressEvent(QMouseEvent* pEvent)
 {
     const QPoint ms_pt = pEvent->pos();
-
+    aiVector3D temp_v3;
-__unused aiVector3D temp_v3;
 
 	// Check if GLView is pointed.
 	if(childAt(ms_pt) == mGLView)
@@ -305,24 +304,26 @@ void MainWindow::SceneObject_LightSource(const QString& pName)
 	ui->lstLight->selectAll();
 }
 
-void MainWindow::on_butOpenFile_clicked()
+void MainWindow::on_butOpenFile_clicked() {
-{
     aiString filter_temp;
-QString filename, filter;
-
     mImporter.GetExtensionList( filter_temp );
+
+    QString filename, filter;
     filter = filter_temp.C_Str();
 	filter.replace(';', ' ');
 	filter.append(" ;; All (*.*)");
 	filename = QFileDialog::getOpenFileName(this, "Choose the file", "", filter);
 
-	if(!filename.isEmpty()) ImportFile(filename);
+    if (!filename.isEmpty()) {
+        ImportFile( filename );
+    }
 }
 
 void MainWindow::on_butExport_clicked()
 {
     using namespace Assimp;
 
+#ifndef ASSIMP_BUILD_NO_EXPORT
     QString filename, filter, format_id;
     Exporter exporter;
     QTime time_begin;
@@ -373,6 +374,7 @@ QMap<QString, const aiExportFormatDesc*> exportersMap;
 		LogError(errorMessage);
 		QMessageBox::critical(this, "Export error", errorMessage);
 	}
+#endif
 }
 
 void MainWindow::on_cbxLighting_clicked(bool pChecked)
@@ -382,11 +384,7 @@ void MainWindow::on_cbxLighting_clicked(bool pChecked)
 	else
 		mGLView->Lighting_Disable();
 
-#if ASSIMP_QT4_VIEWER
-	mGLView->updateGL();
-#else
 	mGLView->update();
-#endif // ASSIMP_QT4_VIEWER
 }
 
 void MainWindow::on_lstLight_itemSelectionChanged()
@@ -438,9 +436,5 @@ void MainWindow::on_cbxDrawAxes_clicked(bool checked)
 void MainWindow::on_cbxTextures_clicked(bool checked)
 {
 	mGLView->Enable_Textures(checked);
-#if ASSIMP_QT4_VIEWER
-	mGLView->updateGL();
-#else
 	mGLView->update();
-#endif // ASSIMP_QT4_VIEWER
 }

tools/assimp_qt_viewer/mainwindow.hpp

@@ -6,7 +6,7 @@
 #pragma once
 
 // Header files, Qt.
-#if ASSIMP_QT4_VIEWER
+#if defined ASSIMP_QT4_VIEWER
 #	include <QMainWindow>
 #else
 #	include <QtWidgets>