reorganized file structure layout. more to follow...

git-svn-id: http://svn.clifford.at/openscad/trunk@364 b57f626f-c46c-0410-a088-ec61d464b74c

1 files changed, 0 insertions, 1800 deletions

diff --git a/mainwin.cc b/mainwin.cc
deleted file mode 100644
index 7abb4ed..0000000
--- a/mainwin.cc
+++ /dev/null
@@ -1,1800 +0,0 @@
-/*
- *  OpenSCAD (www.openscad.at)
- *  Copyright (C) 2009  Clifford Wolf <clifford@clifford.at>
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- */
-
-#define INCLUDE_ABSTRACT_NODE_DETAILS
-
-#include "openscad.h"
-#include "MainWindow.h"
-#include "Preferences.h"
-#include "printutils.h"
-
-#include <QMenu>
-#include <QTime>
-#include <QMenuBar>
-#include <QSplitter>
-#include <QFileDialog>
-#include <QApplication>
-#include <QProgressDialog>
-#include <QHBoxLayout>
-#include <QVBoxLayout>
-#include <QLabel>
-#include <QFileInfo>
-#include <QTextStream>
-#include <QStatusBar>
-#include <QDropEvent>
-#include <QMimeData>
-#include <QUrl>
-#include <QTimer>
-#include <QMessageBox>
-#include <QDesktopServices>
-#include <QSettings>
-
-//for chdir
-#include <unistd.h>
-
-#ifdef ENABLE_CGAL
-
-#if 1
-#include "CGAL_renderer.h"
-using OpenSCAD::OGL::Polyhedron;
-using OpenSCAD::OGL::SNC_BOUNDARY;
-using OpenSCAD::OGL::SNC_SKELETON;
-using OpenSCAD::OGL::Nef3_Converter;
-#else
-// a little hackish: we need access to default-private members of
-// CGAL::OGL::Nef3_Converter so we can implement our own draw function
-// that does not scale the model. so we define 'class' to 'struct'
-// for this header..
-//
-// theoretically there could be two problems:
-// 1.) defining language keyword with the pre processor is illegal afair
-// 2.) the compiler could use a different memory layout or name mangling for structs
-//
-// both does not seam to be the case with todays compilers...
-//
-#define class struct
-#include <CGAL/Nef_3/OGL_helper.h>
-#undef class
-using CGAL::OGL::Polyhedron;
-using CGAL::OGL::SNC_BOUNDARY;
-using CGAL::OGL::SNC_SKELETON;
-using CGAL::OGL::Nef3_Converter;
-#endif
-#endif // ENABLE_CGAL
-
-#define QUOTE(x__) # x__
-#define QUOTED(x__) QUOTE(x__)
-
-static char helptitle[] =
-	"OpenSCAD "
-	QUOTED(OPENSCAD_VERSION)
-  " (www.openscad.org)\n";
-static char copyrighttext[] =
-	"Copyright (C) 2009  Clifford Wolf <clifford@clifford.at>\n"
-	"\n"
-	"This program is free software; you can redistribute it and/or modify"
-	"it under the terms of the GNU General Public License as published by"
-	"the Free Software Foundation; either version 2 of the License, or"
-	"(at your option) any later version.";
-
-QPointer<MainWindow> MainWindow::current_win = NULL;
-
-MainWindow::MainWindow(const char *filename)
-{
-	setupUi(this);
-
-	root_ctx.functions_p = &builtin_functions;
-	root_ctx.modules_p = &builtin_modules;
-	root_ctx.set_variable("$fn", Value(0.0));
-	root_ctx.set_variable("$fs", Value(1.0));
-	root_ctx.set_variable("$fa", Value(12.0));
-	root_ctx.set_variable("$t", Value(0.0));
-
-	Value zero3;
-	zero3.type = Value::VECTOR;
-	zero3.vec.append(new Value(0.0));
-	zero3.vec.append(new Value(0.0));
-	zero3.vec.append(new Value(0.0));
-	root_ctx.set_variable("$vpt", zero3);
-	root_ctx.set_variable("$vpr", zero3);
-
-	root_module = NULL;
-	absolute_root_node = NULL;
-	root_raw_term = NULL;
-	root_norm_term = NULL;
-	root_chain = NULL;
-#ifdef ENABLE_CGAL
-	this->root_N = NULL;
-	this->recreate_cgal_ogl_p = false;
-	cgal_ogl_p = NULL;
-	cgal_ogl_ps = NULL;
-#endif
-
-	highlights_chain = NULL;
-	background_chain = NULL;
-	root_node = NULL;
-	enableOpenCSG = false;
-
-	tval = 0;
-	fps = 0;
-	fsteps = 1;
-
-	highlighter = NULL;
-
-	editor->setWordWrapMode(QTextOption::WrapAnywhere); // Not designable
-	setFont("", 0); // Init default font
-
-	screen->statusLabel = new QLabel(this);
-	statusBar()->addWidget(screen->statusLabel);
-
-	animate_timer = new QTimer(this);
-	connect(animate_timer, SIGNAL(timeout()), this, SLOT(updateTVal()));
-
-	connect(e_tval, SIGNAL(textChanged(QString)), this, SLOT(actionCompile()));
-	connect(e_fps, SIGNAL(textChanged(QString)), this, SLOT(updatedFps()));
-
-	animate_panel->hide();
-
-	// File menu
-	connect(this->fileActionNew, SIGNAL(triggered()), this, SLOT(actionNew()));
-	connect(this->fileActionOpen, SIGNAL(triggered()), this, SLOT(actionOpen()));
-	connect(this->fileActionSave, SIGNAL(triggered()), this, SLOT(actionSave()));
-	connect(this->fileActionSaveAs, SIGNAL(triggered()), this, SLOT(actionSaveAs()));
-	connect(this->fileActionReload, SIGNAL(triggered()), this, SLOT(actionReload()));
-	connect(this->fileActionQuit, SIGNAL(triggered()), this, SLOT(quit()));
-#ifndef __APPLE__
-	this->fileActionSave->setShortcut(QKeySequence(Qt::Key_F2));
-	this->fileActionReload->setShortcut(QKeySequence(Qt::Key_F3));
-#endif
-	// Open Recent
-	for (int i = 0;i<maxRecentFiles; i++) {
-		this->actionRecentFile[i] = new QAction(this);
-		this->actionRecentFile[i]->setVisible(false);
-		this->menuOpenRecent->addAction(this->actionRecentFile[i]);
-		connect(this->actionRecentFile[i], SIGNAL(triggered()),
-						this, SLOT(actionOpenRecent()));
-	}
-	this->menuOpenRecent->addSeparator();
-	this->menuOpenRecent->addAction(this->fileActionClearRecent);
-	connect(this->fileActionClearRecent, SIGNAL(triggered()),
-					this, SLOT(clearRecentFiles()));
-
-	QDir examplesdir(QApplication::instance()->applicationDirPath());
-#ifdef Q_WS_MAC
-	examplesdir.cd("../Resources"); // Examples can be bundled
-	if (!examplesdir.exists("examples")) examplesdir.cd("../../..");
-#endif
-	if (examplesdir.cd("examples")) {
-		this->examplesdir = examplesdir.path();
-	
-		QStringList examples = examplesdir.entryList(QStringList("*.scad"), 
-																								 QDir::Files | QDir::Readable, QDir::Name);
-		foreach (const QString &ex, examples) {
-			this->menuExamples->addAction(ex, this, SLOT(actionOpenExample()));
-		}
-	}
-
-	// Edit menu
-	connect(this->editActionUndo, SIGNAL(triggered()), editor, SLOT(undo()));
-	connect(this->editActionRedo, SIGNAL(triggered()), editor, SLOT(redo()));
-	connect(this->editActionCut, SIGNAL(triggered()), editor, SLOT(cut()));
-	connect(this->editActionCopy, SIGNAL(triggered()), editor, SLOT(copy()));
-	connect(this->editActionPaste, SIGNAL(triggered()), editor, SLOT(paste()));
-	connect(this->editActionIndent, SIGNAL(triggered()), this, SLOT(editIndent()));
-	connect(this->editActionUnindent, SIGNAL(triggered()), this, SLOT(editUnindent()));
-	connect(this->editActionComment, SIGNAL(triggered()), this, SLOT(editComment()));
-	connect(this->editActionUncomment, SIGNAL(triggered()), this, SLOT(editUncomment()));
-	connect(this->editActionPasteVPT, SIGNAL(triggered()), this, SLOT(pasteViewportTranslation()));
-	connect(this->editActionPasteVPR, SIGNAL(triggered()), this, SLOT(pasteViewportRotation()));
-	connect(this->editActionZoomIn, SIGNAL(triggered()), editor, SLOT(zoomIn()));
-	connect(this->editActionZoomOut, SIGNAL(triggered()), editor, SLOT(zoomOut()));
-	connect(this->editActionHide, SIGNAL(triggered()), this, SLOT(hideEditor()));
-	connect(this->editActionPreferences, SIGNAL(triggered()), this, SLOT(preferences()));
-
-	// Design menu
-	connect(this->designActionReloadAndCompile, SIGNAL(triggered()), this, SLOT(actionReloadCompile()));
-	connect(this->designActionCompile, SIGNAL(triggered()), this, SLOT(actionCompile()));
-#ifdef ENABLE_CGAL
-	connect(this->designActionCompileAndRender, SIGNAL(triggered()), this, SLOT(actionRenderCGAL()));
-#else
-	this->designActionCompileAndRender->setVisible(false);
-#endif
-	connect(this->designActionDisplayAST, SIGNAL(triggered()), this, SLOT(actionDisplayAST()));
-	connect(this->designActionDisplayCSGTree, SIGNAL(triggered()), this, SLOT(actionDisplayCSGTree()));
-	connect(this->designActionDisplayCSGProducts, SIGNAL(triggered()), this, SLOT(actionDisplayCSGProducts()));
-	connect(this->designActionExportSTL, SIGNAL(triggered()), this, SLOT(actionExportSTL()));
-	connect(this->designActionExportOFF, SIGNAL(triggered()), this, SLOT(actionExportOFF()));
-	connect(this->designActionExportDXF, SIGNAL(triggered()), this, SLOT(actionExportDXF()));
-	connect(this->designActionFlushCaches, SIGNAL(triggered()), this, SLOT(actionFlushCaches()));
-
-	// View menu
-#ifndef ENABLE_OPENCSG
-	this->viewActionOpenCSG->setVisible(false);
-#else
-	connect(this->viewActionOpenCSG, SIGNAL(triggered()), this, SLOT(viewModeOpenCSG()));
-	if (!screen->hasOpenCSGSupport()) {
-		this->viewActionOpenCSG->setEnabled(false);
-	}
-#endif
-
-#ifdef ENABLE_CGAL
-	connect(this->viewActionCGALSurfaces, SIGNAL(triggered()), this, SLOT(viewModeCGALSurface()));
-	connect(this->viewActionCGALGrid, SIGNAL(triggered()), this, SLOT(viewModeCGALGrid()));
-#else
-	this->viewActionCGALSurfaces->setVisible(false);
-	this->viewActionCGALGrid->setVisible(false);
-#endif
-	connect(this->viewActionThrownTogether, SIGNAL(triggered()), this, SLOT(viewModeThrownTogether()));
-	connect(this->viewActionShowEdges, SIGNAL(triggered()), this, SLOT(viewModeShowEdges()));
-	connect(this->viewActionShowAxes, SIGNAL(triggered()), this, SLOT(viewModeShowAxes()));
-	connect(this->viewActionShowCrosshairs, SIGNAL(triggered()), this, SLOT(viewModeShowCrosshairs()));
-	connect(this->viewActionAnimate, SIGNAL(triggered()), this, SLOT(viewModeAnimate()));
-	connect(this->viewActionTop, SIGNAL(triggered()), this, SLOT(viewAngleTop()));
-	connect(this->viewActionBottom, SIGNAL(triggered()), this, SLOT(viewAngleBottom()));
-	connect(this->viewActionLeft, SIGNAL(triggered()), this, SLOT(viewAngleLeft()));
-	connect(this->viewActionRight, SIGNAL(triggered()), this, SLOT(viewAngleRight()));
-	connect(this->viewActionFront, SIGNAL(triggered()), this, SLOT(viewAngleFront()));
-	connect(this->viewActionBack, SIGNAL(triggered()), this, SLOT(viewAngleBack()));
-	connect(this->viewActionDiagonal, SIGNAL(triggered()), this, SLOT(viewAngleDiagonal()));
-	connect(this->viewActionCenter, SIGNAL(triggered()), this, SLOT(viewCenter()));
-	connect(this->viewActionPerspective, SIGNAL(triggered()), this, SLOT(viewPerspective()));
-	connect(this->viewActionOrthogonal, SIGNAL(triggered()), this, SLOT(viewOrthogonal()));
-	connect(this->viewActionHide, SIGNAL(triggered()), this, SLOT(hideConsole()));
-
-// #ifdef ENABLE_CGAL
-// 	viewActionCGALSurface = menu->addAction("CGAL Surfaces", this, SLOT(viewModeCGALSurface()), QKeySequence(Qt::Key_F10));
-// 	viewActionCGALGrid = menu->addAction("CGAL Grid Only", this, SLOT(viewModeCGALGrid()), QKeySequence(Qt::Key_F11));
-// #endif
-
-	// Help menu
-	connect(this->helpActionAbout, SIGNAL(triggered()), this, SLOT(helpAbout()));
-	connect(this->helpActionManual, SIGNAL(triggered()), this, SLOT(helpManual()));
-
-
-	console->setReadOnly(true);
-	current_win = this;
-
-	PRINT(helptitle);
-	PRINT(copyrighttext);
-	PRINT("");
-
-	if (filename) {
-		openFile(filename);
-	} else {
-		setFileName("");
-	}
-
-	connect(editor->document(), SIGNAL(contentsChanged()), this, SLOT(animateUpdateDocChanged()));
-	connect(editor->document(), SIGNAL(modificationChanged(bool)), this, SLOT(setWindowModified(bool)));
-	connect(editor->document(), SIGNAL(modificationChanged(bool)), fileActionSave, SLOT(setEnabled(bool)));
-	connect(screen, SIGNAL(doAnimateUpdate()), this, SLOT(animateUpdate()));
-
-	connect(Preferences::inst(), SIGNAL(requestRedraw()), this->screen, SLOT(updateGL()));
-	connect(Preferences::inst(), SIGNAL(fontChanged(const QString&,uint)), 
-					this, SLOT(setFont(const QString&,uint)));
-	Preferences::inst()->apply();
-
-
-	// display this window and check for OpenGL 2.0 (OpenCSG) support
-	viewModeThrownTogether();
-	show();
-
-	// make sure it looks nice..
-	resize(800, 600);
-	splitter1->setSizes(QList<int>() << 400 << 400);
-	splitter2->setSizes(QList<int>() << 400 << 200);
-
-#ifdef ENABLE_OPENCSG
-	viewModeOpenCSG();
-#else
-	viewModeThrownTogether();
-#endif
-	viewPerspective();
-
-	setAcceptDrops(true);
-	current_win = NULL;
-}
-
-MainWindow::~MainWindow()
-{
-	if (root_module)
-		delete root_module;
-	if (root_node)
-		delete root_node;
-#ifdef ENABLE_CGAL
-	if (this->root_N)
-		delete this->root_N;
-	if (cgal_ogl_p) {
-		Polyhedron *p = (Polyhedron*)cgal_ogl_p;
-		delete p;
-	}
-	if (cgal_ogl_ps)
-		cgal_ogl_ps->unlink();
-#endif
-}
-
-/*!
-	Requests to open a file from an external event, e.g. by double-clicking a filename.
- */
-#ifdef ENABLE_MDI
-void MainWindow::requestOpenFile(const QString &filename)
-{
-	new MainWindow(filename.toUtf8());
-}
-#else
-void MainWindow::requestOpenFile(const QString &)
-{
-}
-#endif
-
-void
-MainWindow::openFile(const QString &new_filename)
-{
-#ifdef ENABLE_MDI
-	if (!editor->toPlainText().isEmpty()) {
-		new MainWindow(new_filename.toUtf8());
-		current_win = NULL;
-		return;
-	}
-#endif
-	setFileName(new_filename);
-
-	load();
-}
-
-void
-MainWindow::setFileName(const QString &filename)
-{
-	if (filename.isEmpty()) {
-		this->fileName.clear();
-		setWindowTitle("OpenSCAD - New Document[*]");
-	}
-	else {
-		QFileInfo fileinfo(filename);
-		QString infoFileName = fileinfo.canonicalFilePath();
-		setWindowTitle("OpenSCAD - " + fileinfo.fileName() + "[*]");
-
-		// Check that the canonical file path exists - only update recent files
-		// if it does. Should prevent empty list items on initial open etc.
-		if (!infoFileName.isEmpty()) {
-			this->fileName = infoFileName;
-			QSettings settings; // already set up properly via main.cpp
-			QStringList files = settings.value("recentFileList").toStringList();
-			files.removeAll(this->fileName);
-			files.prepend(this->fileName);
-			while (files.size() > maxRecentFiles)
-				files.removeLast();
-			settings.setValue("recentFileList", files);
-		} else {
-			this->fileName = fileinfo.fileName();
-		}
-		
-		QDir::setCurrent(fileinfo.dir().absolutePath());
-	}
-
-	foreach(QWidget *widget, QApplication::topLevelWidgets()) {
-		MainWindow *mainWin = qobject_cast<MainWindow *>(widget);
-		if (mainWin) {
-			mainWin->updateRecentFileActions();
-		}
-	}
-}
-
-void MainWindow::updatedFps()
-{
-	bool fps_ok;
-	double fps = e_fps->text().toDouble(&fps_ok);
-	animate_timer->stop();
-	if (fps_ok && fps > 0) {
-		animate_timer->setSingleShot(false);
-		animate_timer->setInterval(int(1000 / e_fps->text().toDouble()));
-		animate_timer->start();
-	}
-}
-
-void MainWindow::updateTVal()
-{
-	bool fps_ok;
-	double fps = e_fps->text().toDouble(&fps_ok);
-	if (fps_ok) {
-		if (fps <= 0) {
-			actionCompile();
-		} else {
-			double s = e_fsteps->text().toDouble();
-			double t = e_tval->text().toDouble() + 1/s;
-			QString txt;
-			txt.sprintf("%.5f", t >= 1.0 ? 0.0 : t);
-			e_tval->setText(txt);
-		}
-	}
-}
-
-void MainWindow::load()
-{
-	current_win = this;
-	if (!this->fileName.isEmpty()) {
-		QFile file(this->fileName);
-		if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
-			PRINTA("Failed to open file: %1 (%2)", this->fileName, file.errorString());
-		}
-		else {
-			QString text = QTextStream(&file).readAll();
-			PRINTA("Loaded design `%1'.", this->fileName);
-			editor->setPlainText(text);
-		}
-	}
-	current_win = this;
-}
-
-AbstractNode *MainWindow::find_root_tag(AbstractNode *n)
-{
-	foreach(AbstractNode *v, n->children) {
-		if (v->modinst->tag_root) return v;
-		if (AbstractNode *vroot = find_root_tag(v)) return vroot;
-	}
-	return NULL;
-}
-
-void MainWindow::compile(bool procevents)
-{
-	PRINT("Parsing design (AST generation)...");
-	if (procevents)
-		QApplication::processEvents();
-
-
-	// Remove previous CSG tree
-	if (root_module) {
-		delete root_module;
-		root_module = NULL;
-	}
-
-	if (absolute_root_node) {
-		delete absolute_root_node;
-		absolute_root_node = NULL;
-	}
-
-	if (root_raw_term) {
-		root_raw_term->unlink();
-		root_raw_term = NULL;
-	}
-
-	if (root_norm_term) {
-		root_norm_term->unlink();
-		root_norm_term = NULL;
-	}
-
-	if (root_chain) {
-		delete root_chain;
-		root_chain = NULL;
-	}
-
-	foreach(CSGTerm *v, highlight_terms) {
-		v->unlink();
-	}
-	highlight_terms.clear();
-	if (highlights_chain) {
-		delete highlights_chain;
-		highlights_chain = NULL;
-	}
-	foreach(CSGTerm *v, background_terms) {
-		v->unlink();
-	}
-	background_terms.clear();
-	if (background_chain) {
-		delete background_chain;
-		background_chain = NULL;
-	}
-	root_node = NULL;
-	enableOpenCSG = false;
-
-	// Initialize special variables
-	root_ctx.set_variable("$t", Value(e_tval->text().toDouble()));
-
-	Value vpt;
-	vpt.type = Value::VECTOR;
-	vpt.vec.append(new Value(-screen->object_trans_x));
-	vpt.vec.append(new Value(-screen->object_trans_y));
-	vpt.vec.append(new Value(-screen->object_trans_z));
-	root_ctx.set_variable("$vpt", vpt);
-
-	Value vpr;
-	vpr.type = Value::VECTOR;
-	vpr.vec.append(new Value(fmodf(360 - screen->object_rot_x + 90, 360)));
-	vpr.vec.append(new Value(fmodf(360 - screen->object_rot_y, 360)));
-	vpr.vec.append(new Value(fmodf(360 - screen->object_rot_z, 360)));
-	root_ctx.set_variable("$vpr", vpr);
-
-	// Parse
-	last_compiled_doc = editor->toPlainText();
-	root_module = parse((last_compiled_doc + "\n" + commandline_commands).toAscii().data(), false);
-
-	// Error highlighting
-	if (highlighter) {
-		delete highlighter;
-		highlighter = NULL;
-	}
-	if (parser_error_pos >= 0) {
-		highlighter = new Highlighter(editor->document());
-	}
-
-	if (!root_module) {
-		if (!animate_panel->isVisible()) {
-			QTextCursor cursor = editor->textCursor();
-			cursor.setPosition(parser_error_pos);
-			editor->setTextCursor(cursor);
-		}
-		goto fail;
-	}
-
-	// Evaluate CSG tree
-	PRINT("Compiling design (CSG Tree generation)...");
-	if (procevents)
-		QApplication::processEvents();
-
-	AbstractNode::idx_counter = 1;
-	root_inst = ModuleInstantiation();
-	absolute_root_node = root_module->evaluate(&root_ctx, &root_inst);
-
-	if (!absolute_root_node)
-		goto fail;
-
-	// Do we have an explicit root node (! modifier)?
-	if (!(this->root_node = find_root_tag(absolute_root_node))) {
-		this->root_node = absolute_root_node;
-	}
-	root_node->dump("");
-
-	PRINT("Compiling design (CSG Products generation)...");
-	if (procevents)
-		QApplication::processEvents();
-
-	double m[20];
-
-	for (int i = 0; i < 16; i++)
-		m[i] = i % 5 == 0 ? 1.0 : 0.0;
-	for (int i = 16; i < 20; i++)
-		m[i] = -1;
-
-	// Main CSG evaluation
-	root_raw_term = root_node->render_csg_term(m, &highlight_terms, &background_terms);
-
-	if (!root_raw_term)
-		goto fail;
-
-	PRINT("Compiling design (CSG Products normalization)...");
-	if (procevents)
-		QApplication::processEvents();
-
-	root_norm_term = root_raw_term->link();
-
-	// CSG normalization
-	while (1) {
-		CSGTerm *n = root_norm_term->normalize();
-		root_norm_term->unlink();
-		if (root_norm_term == n)
-			break;
-		root_norm_term = n;
-	}
-
-	if (!root_norm_term)
-		goto fail;
-
-	root_chain = new CSGChain();
-	root_chain->import(root_norm_term);
-
-	if (root_chain->polysets.size() > 1000) {
-		PRINTF("WARNING: Normalized tree has %d elements!", root_chain->polysets.size());
-		PRINTF("WARNING: OpenCSG rendering has been disabled.");
-	} else {
-		enableOpenCSG = true;
-	}
-
-	if (highlight_terms.size() > 0)
-	{
-		PRINTF("Compiling highlights (%d CSG Trees)...", highlight_terms.size());
-		if (procevents)
-			QApplication::processEvents();
-
-		highlights_chain = new CSGChain();
-		for (int i = 0; i < highlight_terms.size(); i++) {
-			while (1) {
-				CSGTerm *n = highlight_terms[i]->normalize();
-				highlight_terms[i]->unlink();
-				if (highlight_terms[i] == n)
-					break;
-				highlight_terms[i] = n;
-			}
-			highlights_chain->import(highlight_terms[i]);
-		}
-	}
-
-	if (background_terms.size() > 0)
-	{
-		PRINTF("Compiling background (%d CSG Trees)...", background_terms.size());
-		if (procevents)
-			QApplication::processEvents();
-
-		background_chain = new CSGChain();
-		for (int i = 0; i < background_terms.size(); i++) {
-			while (1) {
-				CSGTerm *n = background_terms[i]->normalize();
-				background_terms[i]->unlink();
-				if (background_terms[i] == n)
-					break;
-				background_terms[i] = n;
-			}
-			background_chain->import(background_terms[i]);
-		}
-	}
-
-	if (1) {
-		PRINT("Compilation finished.");
-		if (procevents)
-			QApplication::processEvents();
-	} else {
-fail:
-		if (parser_error_pos < 0) {
-			PRINT("ERROR: Compilation failed! (no top level object found)");
-		} else {
-			int line = 1;
-			QByteArray pb = last_compiled_doc.toAscii();
-			char *p = pb.data();
-			for (int i = 0; i < parser_error_pos; i++) {
-				if (p[i] == '\n')
-					line++;
-				if (p[i] == 0) {
-					line = -1;
-					break;
-				}
-			}
-			PRINTF("ERROR: Compilation failed! (parser error in line %d)", line);
-		}
-		if (procevents)
-			QApplication::processEvents();
-	}
-}
-
-void MainWindow::actionNew()
-{
-#ifdef ENABLE_MDI
-	new MainWindow;
-#else
-	setFileName("");
-	editor->setPlainText("");
-#endif
-}
-
-void MainWindow::actionOpen()
-{
-	current_win = this;
-	QString new_filename = QFileDialog::getOpenFileName(this, "Open File", "", "OpenSCAD Designs (*.scad)");
-	if (!new_filename.isEmpty()) openFile(new_filename);
-	current_win = NULL;
-}
-
-void MainWindow::actionOpenRecent()
-{
-	QAction *action = qobject_cast<QAction *>(sender());
-	if (action) {
-		openFile(action->data().toString());
-	}
-}
-
-void MainWindow::clearRecentFiles()
-{
-	QSettings settings; // already set up properly via main.cpp
-	QStringList files;
-	settings.setValue("recentFileList", files);
-
-	updateRecentFileActions();
-}
-
-void MainWindow::updateRecentFileActions()
-{
-	QSettings settings; // set up project and program properly in main.cpp
-	QStringList files = settings.value("recentFileList").toStringList();
-
-	int originalNumRecentFiles = files.size();
-
-	// Remove any duplicate or empty entries from the list
-#if (QT_VERSION >= QT_VERSION_CHECK(4, 5, 0))
-	files.removeDuplicates();
-#endif
-	files.removeAll(QString());
-	// Now remove any entries which do not exist
-	for(int i = files.size()-1; i >= 0; --i) {
-		QFileInfo fileInfo(files[i]);
-		if (!QFile(fileInfo.absoluteFilePath()).exists())
-			files.removeAt(i);
-	}
-
-	int numRecentFiles = qMin(files.size(),
-														static_cast<int>(maxRecentFiles));
-
-	for (int i = 0; i < numRecentFiles; ++i) {
-		this->actionRecentFile[i]->setText(QFileInfo(files[i]).fileName());
-		this->actionRecentFile[i]->setData(files[i]);
-		this->actionRecentFile[i]->setVisible(true);
-	}
-	for (int j = numRecentFiles; j < maxRecentFiles; ++j)
-		this->actionRecentFile[j]->setVisible(false);
-
-	// If we had to prune the list, then save the cleaned list
-	if (originalNumRecentFiles != numRecentFiles)
-		settings.setValue("recentFileList", files);
-}
-
-void MainWindow::actionOpenExample()
-{
-	QAction *action = qobject_cast<QAction *>(sender());
-	if (action) {
-		openFile(this->examplesdir + QDir::separator() + action->text());
-	}
-}
-
-void MainWindow::actionSave()
-{
-	if (this->fileName.isEmpty()) {
-		actionSaveAs();
-	}
-	else {
-		current_win = this;
-		QFile file(this->fileName);
-		if (!file.open(QIODevice::WriteOnly | QIODevice::Truncate | QIODevice::Text)) {
-			PRINTA("Failed to open file for writing: %1 (%2)", this->fileName, file.errorString());
-		}
-		else {
-			QTextStream(&file) << this->editor->toPlainText();
-			PRINTA("Saved design `%1'.", this->fileName);
-			this->editor->document()->setModified(false);
-		}
-		current_win = NULL;
-	}
-}
-
-void MainWindow::actionSaveAs()
-{
-	QString new_filename = QFileDialog::getSaveFileName(this, "Save File",
-			this->fileName.isEmpty()?"Untitled.scad":this->fileName,
-			"OpenSCAD Designs (*.scad)");
-	if (!new_filename.isEmpty()) {
-		if (QFileInfo(new_filename).suffix().isEmpty()) {
-			new_filename.append(".scad");
-
-			// Manual overwrite check since Qt doesn't do it, when using the
-			// defaultSuffix property
-			QFileInfo info(new_filename);
-			if (info.exists()) {
-				if (QMessageBox::warning(this, windowTitle(),
-						 tr("%1 already exists.\nDo you want to replace it?").arg(info.fileName()),
-						 QMessageBox::Yes | QMessageBox::No, QMessageBox::No) != QMessageBox::Yes) {
-					return;
-				}
-			}
-		}
-		setFileName(new_filename);
-		actionSave();
-	}
-}
-
-void MainWindow::actionReload()
-{
-	load();
-}
-
-void MainWindow::editIndent()
-{
-	QTextCursor cursor = editor->textCursor();
-	int p1 = cursor.selectionStart();
-	QString txt = cursor.selectedText();
-
-	txt.replace(QString(QChar(8233)), QString(QChar(8233)) + QString("\t"));
-	if (txt.endsWith(QString(QChar(8233)) + QString("\t")))
-		txt.chop(1);
-	txt = QString("\t") + txt;
-
-	cursor.insertText(txt);
-	int p2 = cursor.position();
-	cursor.setPosition(p1, QTextCursor::MoveAnchor);
-	cursor.setPosition(p2, QTextCursor::KeepAnchor);
-	editor->setTextCursor(cursor);
-}
-
-void MainWindow::editUnindent()
-{
-	QTextCursor cursor = editor->textCursor();
-	int p1 = cursor.selectionStart();
-	QString txt = cursor.selectedText();
-
-	txt.replace(QString(QChar(8233)) + QString("\t"), QString(QChar(8233)));
-	if (txt.startsWith(QString("\t")))
-		txt.remove(0, 1);
-
-	cursor.insertText(txt);
-	int p2 = cursor.position();
-	cursor.setPosition(p1, QTextCursor::MoveAnchor);
-	cursor.setPosition(p2, QTextCursor::KeepAnchor);
-	editor->setTextCursor(cursor);
-}
-
-void MainWindow::editComment()
-{
-	QTextCursor cursor = editor->textCursor();
-	int p1 = cursor.selectionStart();
-	QString txt = cursor.selectedText();
-
-	txt.replace(QString(QChar(8233)), QString(QChar(8233)) + QString("//"));
-	if (txt.endsWith(QString(QChar(8233)) + QString("//")))
-		txt.chop(2);
-	txt = QString("//") + txt;
-
-	cursor.insertText(txt);
-	int p2 = cursor.position();
-	cursor.setPosition(p1, QTextCursor::MoveAnchor);
-	cursor.setPosition(p2, QTextCursor::KeepAnchor);
-	editor->setTextCursor(cursor);
-}
-
-void MainWindow::editUncomment()
-{
-	QTextCursor cursor = editor->textCursor();
-	int p1 = cursor.selectionStart();
-	QString txt = cursor.selectedText();
-
-	txt.replace(QString(QChar(8233)) + QString("//"), QString(QChar(8233)));
-	if (txt.startsWith(QString("//")))
-		txt.remove(0, 2);
-
-	cursor.insertText(txt);
-	int p2 = cursor.position();
-	cursor.setPosition(p1, QTextCursor::MoveAnchor);
-	cursor.setPosition(p2, QTextCursor::KeepAnchor);
-	editor->setTextCursor(cursor);
-}
-
-void MainWindow::hideEditor()
-{
-	if (editActionHide->isChecked()) {
-		editor->hide();
-	} else {
-		editor->show();
-	}
-}
-
-void MainWindow::pasteViewportTranslation()
-{
-	QTextCursor cursor = editor->textCursor();
-	QString txt;
-	txt.sprintf("[ %.2f, %.2f, %.2f ]", -screen->object_trans_x, -screen->object_trans_y, -screen->object_trans_z);
-	cursor.insertText(txt);
-}
-
-void MainWindow::pasteViewportRotation()
-{
-	QTextCursor cursor = editor->textCursor();
-	QString txt;
-	txt.sprintf("[ %.2f, %.2f, %.2f ]",
-		fmodf(360 - screen->object_rot_x + 90, 360), fmodf(360 - screen->object_rot_y, 360), fmodf(360 - screen->object_rot_z, 360));
-	cursor.insertText(txt);
-}
-
-void MainWindow::actionReloadCompile()
-{
-	console->clear();
-
-	load();
-
-	current_win = this;
-	compile(true);
-
-#ifdef ENABLE_OPENCSG
-	if (!(viewActionOpenCSG->isVisible() && viewActionOpenCSG->isChecked()) &&
-			!viewActionThrownTogether->isChecked()) {
-		viewModeOpenCSG();
-	}
-	else
-#endif
-	{
-		screen->updateGL();
-	}
-	current_win = NULL;
-}
-
-void MainWindow::actionCompile()
-{
-	current_win = this;
-	console->clear();
-
-	compile(!viewActionAnimate->isChecked());
-
-	// Go to non-CGAL view mode
-	if (!viewActionOpenCSG->isChecked() && !viewActionThrownTogether->isChecked()) {
-		viewModeOpenCSG();
-	}
-	else {
-		screen->updateGL();
-	}
-
-	if (viewActionAnimate->isChecked() && e_dump->isChecked()) {
-		QImage img = screen->grabFrameBuffer();
-		QString filename;
-		double s = e_fsteps->text().toDouble();
-		double t = e_tval->text().toDouble();
-		filename.sprintf("frame%05d.png", int(round(s*t)));
-		img.save(filename, "PNG");
-	}
-	
-	current_win = NULL;
-}
-
-#ifdef ENABLE_CGAL
-
-static void report_func(const class AbstractNode*, void *vp, int mark)
-{
-	QProgressDialog *pd = (QProgressDialog*)vp;
-	int v = (int)((mark*100.0) / progress_report_count);
-	pd->setValue(v < 100 ? v : 99);
-	QString label;
-	label.sprintf("Rendering Polygon Mesh using CGAL (%d/%d)", mark, progress_report_count);
-	pd->setLabelText(label);
-	QApplication::processEvents();
-}
-
-void MainWindow::actionRenderCGAL()
-{
-	current_win = this;
-	console->clear();
-
-	compile(true);
-
-	if (!root_module || !root_node)
-		return;
-
-	if (this->root_N) {
-		delete this->root_N;
-		this->root_N = NULL;
-		this->recreate_cgal_ogl_p = true;
-	}
-
-	PRINT("Rendering Polygon Mesh using CGAL...");
-	QApplication::processEvents();
-
-	QTime t;
-	t.start();
-
-	QProgressDialog *pd = new QProgressDialog("Rendering Polygon Mesh using CGAL...", QString(), 0, 100);
-	pd->setValue(0);
-	pd->setAutoClose(false);
-	pd->show();
-	QApplication::processEvents();
-
-	progress_report_prep(root_node, report_func, pd);
-	this->root_N = new CGAL_Nef_polyhedron(root_node->render_cgal_nef_polyhedron());
-	progress_report_fin();
-
-	PRINTF("Number of vertices currently in CGAL cache: %d", AbstractNode::cgal_nef_cache.totalCost());
-	PRINTF("Number of objects currently in CGAL cache: %d", AbstractNode::cgal_nef_cache.size());
-	QApplication::processEvents();
-
-	if (this->root_N->dim == 2) {
-		PRINTF("   Top level object is a 2D object:");
-		QApplication::processEvents();
-		PRINTF("   Empty:      %6s", this->root_N->p2.is_empty() ? "yes" : "no");
-		QApplication::processEvents();
-		PRINTF("   Plane:      %6s", this->root_N->p2.is_plane() ? "yes" : "no");
-		QApplication::processEvents();
-		PRINTF("   Vertices:   %6d", (int)this->root_N->p2.explorer().number_of_vertices());
-		QApplication::processEvents();
-		PRINTF("   Halfedges:  %6d", (int)this->root_N->p2.explorer().number_of_halfedges());
-		QApplication::processEvents();
-		PRINTF("   Edges:      %6d", (int)this->root_N->p2.explorer().number_of_edges());
-		QApplication::processEvents();
-		PRINTF("   Faces:      %6d", (int)this->root_N->p2.explorer().number_of_faces());
-		QApplication::processEvents();
-		PRINTF("   FaceCycles: %6d", (int)this->root_N->p2.explorer().number_of_face_cycles());
-		QApplication::processEvents();
-		PRINTF("   ConnComp:   %6d", (int)this->root_N->p2.explorer().number_of_connected_components());
-		QApplication::processEvents();
-	}
-
-	if (this->root_N->dim == 3) {
-		PRINTF("   Top level object is a 3D object:");
-		PRINTF("   Simple:     %6s", this->root_N->p3.is_simple() ? "yes" : "no");
-		QApplication::processEvents();
-		PRINTF("   Valid:      %6s", this->root_N->p3.is_valid() ? "yes" : "no");
-		QApplication::processEvents();
-		PRINTF("   Vertices:   %6d", (int)this->root_N->p3.number_of_vertices());
-		QApplication::processEvents();
-		PRINTF("   Halfedges:  %6d", (int)this->root_N->p3.number_of_halfedges());
-		QApplication::processEvents();
-		PRINTF("   Edges:      %6d", (int)this->root_N->p3.number_of_edges());
-		QApplication::processEvents();
-		PRINTF("   Halffacets: %6d", (int)this->root_N->p3.number_of_halffacets());
-		QApplication::processEvents();
-		PRINTF("   Facets:     %6d", (int)this->root_N->p3.number_of_facets());
-		QApplication::processEvents();
-		PRINTF("   Volumes:    %6d", (int)this->root_N->p3.number_of_volumes());
-		QApplication::processEvents();
-	}
-
-	int s = t.elapsed() / 1000;
-	PRINTF("Total rendering time: %d hours, %d minutes, %d seconds", s / (60*60), (s / 60) % 60, s % 60);
-
-	if (!viewActionCGALSurfaces->isChecked() && !viewActionCGALGrid->isChecked()) {
-		viewModeCGALSurface();
-	} else {
-		screen->updateGL();
-	}
-
-	PRINT("Rendering finished.");
-
-	delete pd;
-	current_win = NULL;
-}
-
-#endif /* ENABLE_CGAL */
-
-void MainWindow::actionDisplayAST()
-{
-	current_win = this;
-	QTextEdit *e = new QTextEdit(this);
-	e->setWindowFlags(Qt::Window);
-	e->setTabStopWidth(30);
-	e->setWindowTitle("AST Dump");
-	e->setReadOnly(true);
-	if (root_module) {
-		e->setPlainText(root_module->dump("", ""));
-	} else {
-		e->setPlainText("No AST to dump. Please try compiling first...");
-	}
-	e->show();
-	e->resize(600, 400);
-	current_win = NULL;
-}
-
-void MainWindow::actionDisplayCSGTree()
-{
-	current_win = this;
-	QTextEdit *e = new QTextEdit(this);
-	e->setWindowFlags(Qt::Window);
-	e->setTabStopWidth(30);
-	e->setWindowTitle("CSG Tree Dump");
-	e->setReadOnly(true);
-	if (root_node) {
-		e->setPlainText(root_node->dump(""));
-	} else {
-		e->setPlainText("No CSG to dump. Please try compiling first...");
-	}
-	e->show();
-	e->resize(600, 400);
-	current_win = NULL;
-}
-
-void MainWindow::actionDisplayCSGProducts()
-{
-	current_win = this;
-	QTextEdit *e = new QTextEdit(this);
-	e->setWindowFlags(Qt::Window);
-	e->setTabStopWidth(30);
-	e->setWindowTitle("CSG Products Dump");
-	e->setReadOnly(true);
-	e->setPlainText(QString("\nCSG before normalization:\n%1\n\n\nCSG after normalization:\n%2\n\n\nCSG rendering chain:\n%3\n\n\nHighlights CSG rendering chain:\n%4\n\n\nBackground CSG rendering chain:\n%5\n").arg(root_raw_term ? root_raw_term->dump() : "N/A", root_norm_term ? root_norm_term->dump() : "N/A", root_chain ? root_chain->dump() : "N/A", highlights_chain ? highlights_chain->dump() : "N/A", background_chain ? background_chain->dump() : "N/A"));
-	e->show();
-	e->resize(600, 400);
-	current_win = NULL;
-}
-
-#ifdef ENABLE_CGAL
-void MainWindow::actionExportSTLorOFF(bool stl_mode)
-#else
-void MainWindow::actionExportSTLorOFF(bool)
-#endif
-{
-#ifdef ENABLE_CGAL
-	current_win = this;
-
-	if (!this->root_N) {
-		PRINT("Nothing to export! Try building first (press F6).");
-		current_win = NULL;
-		return;
-	}
-
-	if (this->root_N->dim != 3) {
-		PRINT("Current top level object is not a 3D object.");
-		current_win = NULL;
-		return;
-	}
-
-	if (!this->root_N->p3.is_simple()) {
-		PRINT("Object isn't a valid 2-manifold! Modify your design..");
-		current_win = NULL;
-		return;
-	}
-
-	QString stl_filename = QFileDialog::getSaveFileName(this,
-			stl_mode ? "Export STL File" : "Export OFF File", "",
-			stl_mode ? "STL Files (*.stl)" : "OFF Files (*.off)");
-	if (stl_filename.isEmpty()) {
-		PRINTF("No filename specified. %s export aborted.", stl_mode ? "STL" : "OFF");
-		current_win = NULL;
-		return;
-	}
-
-	QProgressDialog *pd = new QProgressDialog(
-			stl_mode ? "Exporting object to STL file..." : "Exporting object to OFF file...",
-			QString(), 0, this->root_N->p3.number_of_facets() + 1);
-	pd->setValue(0);
-	pd->setAutoClose(false);
-	pd->show();
-	QApplication::processEvents();
-
-	if (stl_mode)
-		export_stl(this->root_N, stl_filename, pd);
-	else
-		export_off(this->root_N, stl_filename, pd);
-
-	PRINTF("%s export finished.", stl_mode ? "STL" : "OFF");
-
-	delete pd;
-
-	current_win = NULL;
-#endif /* ENABLE_CGAL */
-}
-
-void MainWindow::actionExportSTL()
-{
-	actionExportSTLorOFF(true);
-}
-
-void MainWindow::actionExportOFF()
-{
-	actionExportSTLorOFF(false);
-}
-
-void MainWindow::actionExportDXF()
-{
-#ifdef ENABLE_CGAL
-	current_win = this;
-
-	if (!this->root_N) {
-		PRINT("Nothing to export! Try building first (press F6).");
-		current_win = NULL;
-		return;
-	}
-
-	if (this->root_N->dim != 2) {
-		PRINT("Current top level object is not a 2D object.");
-		current_win = NULL;
-		return;
-	}
-
-	QString stl_filename = QFileDialog::getSaveFileName(this,
-			"Export DXF File", "", "DXF Files (*.dxf)");
-	if (stl_filename.isEmpty()) {
-		PRINTF("No filename specified. DXF export aborted.");
-		current_win = NULL;
-		return;
-	}
-
-	export_dxf(this->root_N, stl_filename, NULL);
-	PRINTF("DXF export finished.");
-
-	current_win = NULL;
-#endif /* ENABLE_CGAL */
-}
-
-void MainWindow::actionFlushCaches()
-{
-	PolySet::ps_cache.clear();
-	AbstractNode::cgal_nef_cache.clear();
-	dxf_dim_cache.clear();
-	dxf_cross_cache.clear();
-}
-
-void MainWindow::viewModeActionsUncheck()
-{
-	viewActionOpenCSG->setChecked(false);
-#ifdef ENABLE_CGAL
-	viewActionCGALSurfaces->setChecked(false);
-	viewActionCGALGrid->setChecked(false);
-#endif
-	viewActionThrownTogether->setChecked(false);
-}
-
-#ifdef ENABLE_OPENCSG
-
-class OpenCSGPrim : public OpenCSG::Primitive
-{
-public:
-	OpenCSGPrim(OpenCSG::Operation operation, unsigned int convexity) :
-			OpenCSG::Primitive(operation, convexity) { }
-	PolySet *p;
-	double *m;
-	int csgmode;
-	virtual void render() {
-		glPushMatrix();
-		glMultMatrixd(m);
-		p->render_surface(PolySet::COLORMODE_NONE, PolySet::csgmode_e(csgmode), m);
-		glPopMatrix();
-	}
-};
-
-static void renderCSGChainviaOpenCSG(CSGChain *chain, GLint *shaderinfo, bool highlight, bool background)
-{
-	std::vector<OpenCSG::Primitive*> primitives;
-	int j = 0;
-	for (int i = 0;; i++)
-	{
-		bool last = i == chain->polysets.size();
-
-		if (last || chain->types[i] == CSGTerm::TYPE_UNION)
-		{
-			if (j+1 != i) {
-				OpenCSG::render(primitives);
-				glDepthFunc(GL_EQUAL);
-			}
-			if (shaderinfo)
-				glUseProgram(shaderinfo[0]);
-			for (; j < i; j++) {
-				double *m = chain->matrices[j];
-				glPushMatrix();
-				glMultMatrixd(m);
-				int csgmode = chain->types[j] == CSGTerm::TYPE_DIFFERENCE ? PolySet::CSGMODE_DIFFERENCE : PolySet::CSGMODE_NORMAL;
-				if (highlight) {
-					chain->polysets[j]->render_surface(PolySet::COLORMODE_HIGHLIGHT, PolySet::csgmode_e(csgmode + 20), m, shaderinfo);
-				} else if (background) {
-					chain->polysets[j]->render_surface(PolySet::COLORMODE_BACKGROUND, PolySet::csgmode_e(csgmode + 10), m, shaderinfo);
-				} else if (m[16] >= 0 || m[17] >= 0 || m[18] >= 0 || m[19] >= 0) {
-					// User-defined color from source
-					glColor4d(m[16], m[17], m[18], m[19]);
-					if (shaderinfo) {
-						glUniform4f(shaderinfo[1], m[16], m[17], m[18], m[19]);
-						glUniform4f(shaderinfo[2], (m[16]+1)/2, (m[17]+1)/2, (m[18]+1)/2, 1.0);
-					}
-					chain->polysets[j]->render_surface(PolySet::COLORMODE_NONE, PolySet::csgmode_e(csgmode), m, shaderinfo);
-				} else if (chain->types[j] == CSGTerm::TYPE_DIFFERENCE) {
-					chain->polysets[j]->render_surface(PolySet::COLORMODE_CUTOUT, PolySet::csgmode_e(csgmode), m, shaderinfo);
-				} else {
-					chain->polysets[j]->render_surface(PolySet::COLORMODE_MATERIAL, PolySet::csgmode_e(csgmode), m, shaderinfo);
-				}
-				glPopMatrix();
-			}
-			if (shaderinfo)
-				glUseProgram(0);
-			for (unsigned int k = 0; k < primitives.size(); k++) {
-				delete primitives[k];
-			}
-			glDepthFunc(GL_LEQUAL);
-			primitives.clear();
-		}
-
-		if (last)
-			break;
-
-		OpenCSGPrim *prim = new OpenCSGPrim(chain->types[i] == CSGTerm::TYPE_DIFFERENCE ?
-				OpenCSG::Subtraction : OpenCSG::Intersection, chain->polysets[i]->convexity);
-		prim->p = chain->polysets[i];
-		prim->m = chain->matrices[i];
-		prim->csgmode = chain->types[i] == CSGTerm::TYPE_DIFFERENCE ? PolySet::CSGMODE_DIFFERENCE : PolySet::CSGMODE_NORMAL;
-		if (highlight)
-			prim->csgmode += 20;
-		else if (background)
-			prim->csgmode += 10;
-		primitives.push_back(prim);
-	}
-}
-
-static void renderGLThrownTogether(void *vp);
-
-static void renderGLviaOpenCSG(void *vp)
-{
-	MainWindow *m = (MainWindow*)vp;
-	if (!m->enableOpenCSG) {
-		renderGLThrownTogether(vp);
-		return;
-	}
-	static int glew_initialized = 0;
-	if (!glew_initialized) {
-		glew_initialized = 1;
-		glewInit();
-	}
-	if (m->root_chain) {
-		GLint *shaderinfo = m->screen->shaderinfo;
-		if (!shaderinfo[0])
-			shaderinfo = NULL;
-		renderCSGChainviaOpenCSG(m->root_chain, m->viewActionShowEdges->isChecked() ? shaderinfo : NULL, false, false);
-		if (m->background_chain) {
-			renderCSGChainviaOpenCSG(m->background_chain, m->viewActionShowEdges->isChecked() ? shaderinfo : NULL, false, true);
-		}
-		if (m->highlights_chain) {
-			renderCSGChainviaOpenCSG(m->highlights_chain, m->viewActionShowEdges->isChecked() ? shaderinfo : NULL, true, false);
-		}
-	}
-#ifdef ENABLE_MDI
-	OpenCSG::reset();
-#endif
-}
-
-/*!
-	Go to the OpenCSG view mode.
-	Falls back to thrown together mode if OpenCSG is not available
-*/
-void MainWindow::viewModeOpenCSG()
-{
-	if (screen->hasOpenCSGSupport()) {
-		viewModeActionsUncheck();
-		viewActionOpenCSG->setChecked(true);
-		screen->setRenderFunc(renderGLviaOpenCSG, this);
-		screen->updateGL();
-	} else {
-		viewModeThrownTogether();
-	}
-}
-
-#endif /* ENABLE_OPENCSG */
-
-#ifdef ENABLE_CGAL
-
-static void renderGLviaCGAL(void *vp)
-{
-	MainWindow *m = (MainWindow*)vp;
-	if (m->recreate_cgal_ogl_p) {
-		m->recreate_cgal_ogl_p = false;
-		Polyhedron *p = (Polyhedron*)m->cgal_ogl_p;
-		delete p;
-		m->cgal_ogl_p = NULL;
-		if (m->cgal_ogl_ps)
-			m->cgal_ogl_ps->unlink();
-		m->cgal_ogl_ps = NULL;
-	}
-	if (!m->root_N) return;
-	if (m->root_N->dim == 2)
-	{
-		if (m->cgal_ogl_ps == NULL) {
-			DxfData dd(*m->root_N);
-			m->cgal_ogl_ps = new PolySet();
-			m->cgal_ogl_ps->is2d = true;
-			dxf_tesselate(m->cgal_ogl_ps, &dd, 0, true, false, 0);
-		}
-
-		// Draw 2D polygons
-		glDisable(GL_LIGHTING);
-		const QColor &col = Preferences::inst()->color(Preferences::CGAL_FACE_2D_COLOR);
-		glColor3f(col.redF(), col.greenF(), col.blueF());
-
-		for (int i=0; i < m->cgal_ogl_ps->polygons.size(); i++) {
-			glBegin(GL_POLYGON);
-			for (int j=0; j < m->cgal_ogl_ps->polygons[i].size(); j++) {
-				PolySet::Point p = m->cgal_ogl_ps->polygons[i][j];
-				glVertex3d(p.x, p.y, -0.1);
-			}
-			glEnd();
-		}
-
-		typedef CGAL_Nef_polyhedron2::Explorer Explorer;
-		typedef Explorer::Face_const_iterator fci_t;
-		typedef Explorer::Halfedge_around_face_const_circulator heafcc_t;
-		typedef Explorer::Point Point;
-		Explorer E = m->root_N->p2.explorer();
-		
-		// Draw 2D edges
-		glDisable(GL_DEPTH_TEST);
-		glDisable(GL_LIGHTING);
-		glLineWidth(2);
-		const QColor &col2 = Preferences::inst()->color(Preferences::CGAL_EDGE_2D_COLOR);
-		glColor3f(col2.redF(), col2.greenF(), col2.blueF());
-
-		// Extract the boundary, including inner boundaries of the polygons
-		for (fci_t fit = E.faces_begin(), fend = E.faces_end(); fit != fend; ++fit)
-		{
-			bool fset = false;
-			double fx = 0.0, fy = 0.0;
-			heafcc_t fcirc(E.halfedge(fit)), fend(fcirc);
-			CGAL_For_all(fcirc, fend) {
-				if(E.is_standard(E.target(fcirc))) {
-					Point p = E.point(E.target(fcirc));
-					double x = to_double(p.x()), y = to_double(p.y());
-					if (!fset) {
-						glBegin(GL_LINE_STRIP);
-						fx = x, fy = y;
-						fset = true;
-					}
-					glVertex3d(x, y, -0.1);
-				}
-			}
-			if (fset) {
-				glVertex3d(fx, fy, -0.1);
-				glEnd();
-			}
-		}
-
-		glEnable(GL_DEPTH_TEST);
-	}
-	else if (m->root_N->dim == 3)
-	{
-		Polyhedron *p = (Polyhedron*)m->cgal_ogl_p;
-		if (!p) {
-			Nef3_Converter<CGAL_Nef_polyhedron3>::setColor(Polyhedron::CGAL_NEF3_MARKED_FACET_COLOR,
-																										 Preferences::inst()->color(Preferences::CGAL_FACE_BACK_COLOR).red(),
-																										 Preferences::inst()->color(Preferences::CGAL_FACE_BACK_COLOR).green(),
-																										 Preferences::inst()->color(Preferences::CGAL_FACE_BACK_COLOR).blue());
-			Nef3_Converter<CGAL_Nef_polyhedron3>::setColor(Polyhedron::CGAL_NEF3_UNMARKED_FACET_COLOR,
-																										 Preferences::inst()->color(Preferences::CGAL_FACE_FRONT_COLOR).red(),
-																										 Preferences::inst()->color(Preferences::CGAL_FACE_FRONT_COLOR).green(),
-																										 Preferences::inst()->color(Preferences::CGAL_FACE_FRONT_COLOR).blue());
-			m->cgal_ogl_p = p = new Polyhedron();
-			Nef3_Converter<CGAL_Nef_polyhedron3>::convert_to_OGLPolyhedron(m->root_N->p3, p);
-			p->init();
-		}
-		if (m->viewActionCGALSurfaces->isChecked())
-			p->set_style(SNC_BOUNDARY);
-		if (m->viewActionCGALGrid->isChecked())
-			p->set_style(SNC_SKELETON);
-#if 0
-		p->draw();
-#else
-		if (p->style == SNC_BOUNDARY) {
-			glCallList(p->object_list_+2);
-			if (m->viewActionShowEdges->isChecked()) {
-				glDisable(GL_LIGHTING);
-				glCallList(p->object_list_+1);
-				glCallList(p->object_list_);
-			}
-		} else {
-			glDisable(GL_LIGHTING);
-			glCallList(p->object_list_+1);
-			glCallList(p->object_list_);
-		}
-#endif
-	}
-}
-
-void MainWindow::viewModeCGALSurface()
-{
-	viewModeActionsUncheck();
-	viewActionCGALSurfaces->setChecked(true);
-	screen->setRenderFunc(renderGLviaCGAL, this);
-	screen->updateGL();
-}
-
-void MainWindow::viewModeCGALGrid()
-{
-	viewModeActionsUncheck();
-	viewActionCGALGrid->setChecked(true);
-	screen->setRenderFunc(renderGLviaCGAL, this);
-	screen->updateGL();
-}
-
-#endif /* ENABLE_CGAL */
-
-static void renderGLThrownTogetherChain(MainWindow *m, CSGChain *chain, bool highlight, bool background, bool fberror)
-{
-	glDepthFunc(GL_LEQUAL);
-	QHash<QPair<PolySet*,double*>,int> polySetVisitMark;
-	bool showEdges = m->viewActionShowEdges->isChecked();
-	for (int i = 0; i < chain->polysets.size(); i++) {
-		if (polySetVisitMark[QPair<PolySet*,double*>(chain->polysets[i], chain->matrices[i])]++ > 0)
-			continue;
-		double *m = chain->matrices[i];
-		glPushMatrix();
-		glMultMatrixd(m);
-		int csgmode = chain->types[i] == CSGTerm::TYPE_DIFFERENCE ? PolySet::CSGMODE_DIFFERENCE : PolySet::CSGMODE_NORMAL;
-		if (highlight) {
-			chain->polysets[i]->render_surface(PolySet::COLORMODE_HIGHLIGHT, PolySet::csgmode_e(csgmode + 20), m);
-			if (showEdges) {
-				glDisable(GL_LIGHTING);
-				chain->polysets[i]->render_edges(PolySet::COLORMODE_HIGHLIGHT, PolySet::csgmode_e(csgmode + 20));
-				glEnable(GL_LIGHTING);
-			}
-		} else if (background) {
-			chain->polysets[i]->render_surface(PolySet::COLORMODE_BACKGROUND, PolySet::csgmode_e(csgmode + 10), m);
-			if (showEdges) {
-				glDisable(GL_LIGHTING);
-				chain->polysets[i]->render_edges(PolySet::COLORMODE_BACKGROUND, PolySet::csgmode_e(csgmode + 10));
-				glEnable(GL_LIGHTING);
-			}
-		} else if (fberror) {
-			if (highlight) {
-				chain->polysets[i]->render_surface(PolySet::COLORMODE_NONE, PolySet::csgmode_e(csgmode + 20), m);
-			} else if (background) {
-				chain->polysets[i]->render_surface(PolySet::COLORMODE_NONE, PolySet::csgmode_e(csgmode + 10), m);
-			} else {
-				chain->polysets[i]->render_surface(PolySet::COLORMODE_NONE, PolySet::csgmode_e(csgmode), m);
-			}
-		} else if (m[16] >= 0 || m[17] >= 0 || m[18] >= 0 || m[19] >= 0) {
-			glColor4d(m[16], m[17], m[18], m[19]);
-			chain->polysets[i]->render_surface(PolySet::COLORMODE_NONE, PolySet::csgmode_e(csgmode), m);
-			if (showEdges) {
-				glDisable(GL_LIGHTING);
-				glColor4d((m[16]+1)/2, (m[17]+1)/2, (m[18]+1)/2, 1.0);
-				chain->polysets[i]->render_edges(PolySet::COLORMODE_NONE, PolySet::csgmode_e(csgmode));
-				glEnable(GL_LIGHTING);
-			}
-		} else if (chain->types[i] == CSGTerm::TYPE_DIFFERENCE) {
-			chain->polysets[i]->render_surface(PolySet::COLORMODE_CUTOUT, PolySet::csgmode_e(csgmode), m);
-			if (showEdges) {
-				glDisable(GL_LIGHTING);
-				chain->polysets[i]->render_edges(PolySet::COLORMODE_CUTOUT, PolySet::csgmode_e(csgmode));
-				glEnable(GL_LIGHTING);
-			}
-		} else {
-			chain->polysets[i]->render_surface(PolySet::COLORMODE_MATERIAL, PolySet::csgmode_e(csgmode), m);
-			if (showEdges) {
-				glDisable(GL_LIGHTING);
-				chain->polysets[i]->render_edges(PolySet::COLORMODE_MATERIAL, PolySet::csgmode_e(csgmode));
-				glEnable(GL_LIGHTING);
-			}
-		}
-		glPopMatrix();
-	}
-}
-
-static void renderGLThrownTogether(void *vp)
-{
-	MainWindow *m = (MainWindow*)vp;
-	if (m->root_chain) {
-		glEnable(GL_CULL_FACE);
-		glCullFace(GL_BACK);
-		renderGLThrownTogetherChain(m, m->root_chain, false, false, false);
-		glCullFace(GL_FRONT);
-		glColor3ub(255, 0, 255);
-		renderGLThrownTogetherChain(m, m->root_chain, false, false, true);
-		glDisable(GL_CULL_FACE);
-	}
-	if (m->background_chain)
-		renderGLThrownTogetherChain(m, m->background_chain, false, true, false);
-	if (m->highlights_chain)
-		renderGLThrownTogetherChain(m, m->highlights_chain, true, false, false);
-}
-
-void MainWindow::viewModeThrownTogether()
-{
-	viewModeActionsUncheck();
-	viewActionThrownTogether->setChecked(true);
-	screen->setRenderFunc(renderGLThrownTogether, this);
-	screen->updateGL();
-}
-
-void MainWindow::viewModeShowEdges()
-{
-	screen->updateGL();
-}
-
-void MainWindow::viewModeShowAxes()
-{
-	screen->setShowAxes(viewActionShowAxes->isChecked());
-	screen->updateGL();
-}
-
-void MainWindow::viewModeShowCrosshairs()
-{
-	screen->setShowCrosshairs(viewActionShowCrosshairs->isChecked());
-	screen->updateGL();
-}
-
-void MainWindow::viewModeAnimate()
-{
-	if (viewActionAnimate->isChecked()) {
-		animate_panel->show();
-		actionCompile();
-		updatedFps();
-	} else {
-		animate_panel->hide();
-		animate_timer->stop();
-	}
-}
-
-void MainWindow::animateUpdateDocChanged()
-{
-	QString current_doc = editor->toPlainText();
-	if (current_doc != last_compiled_doc)
-		animateUpdate();
-}
-
-void MainWindow::animateUpdate()
-{
-	if (animate_panel->isVisible()) {
-		bool fps_ok;
-		double fps = e_fps->text().toDouble(&fps_ok);
-		if (fps_ok && fps <= 0 && !animate_timer->isActive()) {
-			animate_timer->stop();
-			animate_timer->setSingleShot(true);
-			animate_timer->setInterval(50);
-			animate_timer->start();
-		}
-	}
-}
-
-void MainWindow::viewAngleTop()
-{
-	screen->object_rot_x = 90;
-	screen->object_rot_y = 0;
-	screen->object_rot_z = 0;
-	screen->updateGL();
-}
-
-void MainWindow::viewAngleBottom()
-{
-	screen->object_rot_x = 270;
-	screen->object_rot_y = 0;
-	screen->object_rot_z = 0;
-	screen->updateGL();
-}
-
-void MainWindow::viewAngleLeft()
-{
-	screen->object_rot_x = 0;
-	screen->object_rot_y = 0;
-	screen->object_rot_z = 90;
-	screen->updateGL();
-}
-
-void MainWindow::viewAngleRight()
-{
-	screen->object_rot_x = 0;
-	screen->object_rot_y = 0;
-	screen->object_rot_z = 270;
-	screen->updateGL();
-}
-
-void MainWindow::viewAngleFront()
-{
-	screen->object_rot_x = 0;
-	screen->object_rot_y = 0;
-	screen->object_rot_z = 0;
-	screen->updateGL();
-}
-
-void MainWindow::viewAngleBack()
-{
-	screen->object_rot_x = 0;
-	screen->object_rot_y = 0;
-	screen->object_rot_z = 180;
-	screen->updateGL();
-}
-
-void MainWindow::viewAngleDiagonal()
-{
-	screen->object_rot_x = 35;
-	screen->object_rot_y = 0;
-	screen->object_rot_z = 25;
-	screen->updateGL();
-}
-
-void MainWindow::viewCenter()
-{
-	screen->object_trans_x = 0;
-	screen->object_trans_y = 0;
-	screen->object_trans_z = 0;
-	screen->updateGL();
-}
-
-void MainWindow::viewPerspective()
-{
-	viewActionPerspective->setChecked(true);
-	viewActionOrthogonal->setChecked(false);
-	screen->setOrthoMode(false);
-	screen->updateGL();
-}
-
-void MainWindow::viewOrthogonal()
-{
-	viewActionPerspective->setChecked(false);
-	viewActionOrthogonal->setChecked(true);
-	screen->setOrthoMode(true);
-	screen->updateGL();
-}
-
-void MainWindow::hideConsole()
-{
-	if (viewActionHide->isChecked()) {
-		console->hide();
-	} else {
-		console->show();
-	}
-}
-
-void MainWindow::dragEnterEvent(QDragEnterEvent *event)
-{
-	if (event->mimeData()->hasUrls())
-		event->acceptProposedAction();
-}
-
-void MainWindow::dropEvent(QDropEvent *event)
-{
-	current_win = this;
-	const QList<QUrl> urls = event->mimeData()->urls();
-	for (int i = 0; i < urls.size(); i++) {
-		if (urls[i].scheme() != "file")
-			continue;
-		openFile(urls[i].path());
-	}
-	current_win = NULL;
-}
-
-void
-MainWindow::helpAbout()
-{
-	qApp->setWindowIcon(QApplication::windowIcon());
-	QMessageBox::information(this, "About OpenSCAD", QString(helptitle) + QString(copyrighttext));
-}
-
-void
-MainWindow::helpManual()
-{
-	QDesktopServices::openUrl(QUrl("http://en.wikibooks.org/wiki/OpenSCAD_User_Manual"));
-}
-
-/*!
-	FIXME: In SDI mode, this should be called also on New and Open
-	In MDI mode; also call on both reload functions?
- */
-bool
-MainWindow::maybeSave()
-{
-	if (editor->document()->isModified()) {
-		QMessageBox::StandardButton ret;
-		ret = QMessageBox::warning(this, "Application",
-				"The document has been modified.\n"
-				"Do you want to save your changes?",
-				QMessageBox::Save | QMessageBox::Discard | QMessageBox::Cancel);
-		if (ret == QMessageBox::Save) {
-			actionSave();
-			return true; // FIXME: Should return false on error
-		}
-		else if (ret == QMessageBox::Cancel) {
-			return false;
-		}
-	}
-	return true;
-}
-
-void MainWindow::closeEvent(QCloseEvent *event)
-{
-	if (maybeSave()) {
-		event->accept();
-	} else {
-		event->ignore();
-	}
-}
-
-void
-MainWindow::preferences()
-{
-	Preferences::inst()->show();
-	Preferences::inst()->activateWindow();
-	Preferences::inst()->raise();
-}
-
-void MainWindow::setFont(const QString &family, uint size)
-{
-	QFont font(editor->font());
-	if (!family.isEmpty()) font.setFamily(family);
-	if (size > 0)	font.setPointSize(size);
-	font.setStyleHint(QFont::TypeWriter);
-	editor->setFont(font);
-}
-
-void MainWindow::quit()
-{
-	QCloseEvent ev;
-	QApplication::sendEvent(QApplication::instance(), &ev);
-	if (ev.isAccepted()) QApplication::instance()->quit();
-}