Moved more tests from test-code to tests

7 files changed, 821 insertions, 0 deletions

diff --git a/tests/CSGTextCache.cc b/tests/CSGTextCache.cc
new file mode 100644
index 0000000..4234c63
--- /dev/null
+++ b/tests/CSGTextCache.cc
@@ -0,0 +1,27 @@
+#include "CSGTextCache.h"
+
+bool CSGTextCache::contains(const AbstractNode &node) const
+{
+	return this->cache.contains(this->tree.getString(node));
+}
+
+// We cannot return a reference since the [] operator returns a temporary value
+string CSGTextCache::operator[](const AbstractNode &node) const
+{
+	return this->cache[this->tree.getString(node)];
+}
+
+void CSGTextCache::insert(const class AbstractNode &node, const string & value)
+{
+	this->cache.insert(this->tree.getString(node), value);
+}
+
+void CSGTextCache::remove(const class AbstractNode &node)
+{
+	this->cache.remove(this->tree.getString(node));
+}
+
+void CSGTextCache::clear()
+{
+	this->cache.clear();
+}
diff --git a/tests/CSGTextCache.h b/tests/CSGTextCache.h
new file mode 100644
index 0000000..57a6972
--- /dev/null
+++ b/tests/CSGTextCache.h
@@ -0,0 +1,27 @@
+#ifndef CSGTEXTCACHE_H_
+#define CSGTEXTCACHE_H_
+
+#include "myqhash.h"
+#include "Tree.h"
+#include <string>
+
+using std::string;
+
+class CSGTextCache
+{
+public:
+	CSGTextCache(const Tree &tree) : tree(tree) {}
+	~CSGTextCache() {}
+
+	bool contains(const AbstractNode &node) const;
+  string operator[](const AbstractNode &node) const;
+  void insert(const class AbstractNode &node, const string & value);
+  void remove(const class AbstractNode &node);
+	void clear();
+
+private:
+	QHash<string, string> cache;
+	const Tree &tree;
+};
+
+#endif
diff --git a/tests/CSGTextRenderer.cc b/tests/CSGTextRenderer.cc
new file mode 100644
index 0000000..b55c88f
--- /dev/null
+++ b/tests/CSGTextRenderer.cc
@@ -0,0 +1,185 @@
+#include "CSGTextRenderer.h"
+
+#include <string>
+#include <map>
+#include <list>
+#include "visitor.h"
+#include "state.h"
+#include "module.h" // FIXME: Temporarily for ModuleInstantiation
+
+#include "csgnode.h"
+#include "transformnode.h"
+
+#include <sstream>
+#include <iostream>
+#include <assert.h>
+#include <QRegExp>
+
+bool CSGTextRenderer::isCached(const AbstractNode &node)
+{
+	return this->cache.contains(node);
+}
+
+/*!
+	Modifies target by applying op to target and src:
+	target = target [op] src
+ */
+void
+CSGTextRenderer::process(string &target, const string &src, CSGTextRenderer::CsgOp op)
+{
+// 	if (target.dim != 2 && target.dim != 3) {
+// 		assert(false && "Dimension of Nef polyhedron must be 2 or 3");
+// 	}
+
+	switch (op) {
+	case UNION:
+		target += "+" + src;
+		break;
+	case INTERSECTION:
+		target += "*" + src;
+		break;
+	case DIFFERENCE:
+		target += "-" + src;
+		break;
+	case MINKOWSKI:
+		target += "M" + src;
+		break;
+	}
+}
+
+void CSGTextRenderer::applyToChildren(const AbstractNode &node, CSGTextRenderer::CsgOp op)
+{
+	std::stringstream stream;
+	stream << node.name() << node.index();
+	string N = stream.str();
+	if (this->visitedchildren[node.index()].size() > 0) {
+		// FIXME: assert that cache contains nodes in code below
+		bool first = true;
+		for (ChildList::const_iterator iter = this->visitedchildren[node.index()].begin();
+				 iter != this->visitedchildren[node.index()].end();
+				 iter++) {
+			const AbstractNode *chnode = *iter;
+			assert(this->cache.contains(*chnode));
+			// FIXME: Don't use deep access to modinst members
+			if (chnode->modinst->tag_background) continue;
+			if (first) {
+				N += "(" + this->cache[*chnode];
+// 				if (N.dim != 0) first = false; // FIXME: when can this happen?
+				first = false;
+			} else {
+				process(N, this->cache[*chnode], op);
+			}
+			chnode->progress_report();
+		}
+		N += ")";
+	}
+	this->cache.insert(node, N);
+}
+
+/*
+	Typical visitor behavior:
+	o In prefix: Check if we're cached -> prune
+	o In postfix: Check if we're cached -> don't apply operator to children
+	o In postfix: addToParent()
+ */
+
+Response CSGTextRenderer::visit(State &state, const AbstractNode &node)
+{
+	if (state.isPrefix() && isCached(node)) return PruneTraversal;
+	if (state.isPostfix()) {
+		if (!isCached(node)) applyToChildren(node, UNION);
+		addToParent(state, node);
+	}
+	return ContinueTraversal;
+}
+
+Response CSGTextRenderer::visit(State &state, const AbstractIntersectionNode &node)
+{
+	if (state.isPrefix() && isCached(node)) return PruneTraversal;
+	if (state.isPostfix()) {
+		if (!isCached(node)) applyToChildren(node, INTERSECTION);
+		addToParent(state, node);
+	}
+	return ContinueTraversal;
+}
+
+Response CSGTextRenderer::visit(State &state, const CsgNode &node)
+{
+	if (state.isPrefix() && isCached(node)) return PruneTraversal;
+	if (state.isPostfix()) {
+		if (!isCached(node)) {
+			CsgOp op;
+			switch (node.type) {
+			case CSG_TYPE_UNION:
+				op = UNION;
+				break;
+			case CSG_TYPE_DIFFERENCE:
+				op = DIFFERENCE;
+				break;
+			case CSG_TYPE_INTERSECTION:
+				op = INTERSECTION;
+				break;
+			}
+			applyToChildren(node, op);
+		}
+		addToParent(state, node);
+	}
+	return ContinueTraversal;
+}
+
+Response CSGTextRenderer::visit(State &state, const TransformNode &node)
+{
+	if (state.isPrefix() && isCached(node)) return PruneTraversal;
+	if (state.isPostfix()) {
+		if (!isCached(node)) {
+			// First union all children
+			applyToChildren(node, UNION);
+			// FIXME: Then apply transform
+		}
+		addToParent(state, node);
+	}
+	return ContinueTraversal;
+}
+
+// FIXME: RenderNode: Union over children + some magic
+// FIXME: CgaladvNode: Iterate over children. Special operation
+
+// FIXME: Subtypes of AbstractPolyNode:
+// ProjectionNode
+// DxfLinearExtrudeNode
+// DxfRotateExtrudeNode
+// (SurfaceNode)
+// (PrimitiveNode)
+Response CSGTextRenderer::visit(State &state, const AbstractPolyNode &node)
+{
+	if (state.isPrefix() && isCached(node)) return PruneTraversal;
+	if (state.isPostfix()) {
+		if (!isCached(node)) {
+
+	// FIXME: Manage caching
+	// FIXME: Will generate one single Nef polyhedron (no csg ops necessary)
+ 
+			string N = node.name();
+			this->cache.insert(node, N);
+		
+// 		std::cout << "Insert: " << N << "\n";
+// 		std::cout << "Node: " << cacheid.toStdString() << "\n\n";
+		}
+		addToParent(state, node);
+	}
+
+	return ContinueTraversal;
+}
+
+/*!
+	Adds ourself to out parent's list of traversed children.
+	Call this for _every_ node which affects output during the postfix traversal.
+*/
+void CSGTextRenderer::addToParent(const State &state, const AbstractNode &node)
+{
+	assert(state.isPostfix());
+	this->visitedchildren.erase(node.index());
+	if (state.parent()) {
+		this->visitedchildren[state.parent()->index()].push_back(&node);
+	}
+}
diff --git a/tests/CSGTextRenderer.h b/tests/CSGTextRenderer.h
new file mode 100644
index 0000000..79a8a96
--- /dev/null
+++ b/tests/CSGTextRenderer.h
@@ -0,0 +1,40 @@
+#ifndef CSGTEXTRENDERER_H_
+#define CSGTEXTRENDERER_H_
+
+#include "visitor.h"
+#include "CSGTextCache.h"
+
+#include <map>
+#include <list>
+
+using std::string;
+using std::map;
+using std::list;
+
+class CSGTextRenderer : public Visitor
+{
+public:
+	CSGTextRenderer(CSGTextCache &cache) : cache(cache) {}
+  virtual ~CSGTextRenderer() {}
+
+  virtual Response visit(State &state, const AbstractNode &node);
+	virtual Response visit(State &state, const AbstractIntersectionNode &node);
+	virtual Response visit(State &state, const CsgNode &node);
+	virtual Response visit(State &state, const TransformNode &node);
+	virtual Response visit(State &state, const AbstractPolyNode &node);
+
+private:
+	enum CsgOp {UNION, INTERSECTION, DIFFERENCE, MINKOWSKI};
+  void addToParent(const State &state, const AbstractNode &node);
+  bool isCached(const AbstractNode &node);
+	void process(string &target, const string &src, CSGTextRenderer::CsgOp op);
+	void applyToChildren(const AbstractNode &node, CSGTextRenderer::CsgOp op);
+
+  string currindent;
+  typedef list<const AbstractNode *> ChildList;
+  map<int, ChildList> visitedchildren;
+
+	CSGTextCache &cache;
+};
+
+#endif
diff --git a/tests/cgaltest.cc b/tests/cgaltest.cc
new file mode 100644
index 0000000..3e2cb44
--- /dev/null
+++ b/tests/cgaltest.cc
@@ -0,0 +1,188 @@
+/*
+ *  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.
+ *
+ *  As a special exception, you have permission to link this program
+ *  with the CGAL library and distribute executables, as long as you
+ *  follow the requirements of the GNU GPL in regard to all of the
+ *  software in the executable aside from CGAL.
+ *
+ *  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
+ *
+ */
+
+#include "myqhash.h"
+#include "openscad.h"
+#include "node.h"
+#include "module.h"
+#include "context.h"
+#include "value.h"
+#include "export.h"
+#include "builtin.h"
+#include "Tree.h"
+#include "CGALRenderer.h"
+#include "PolySetCGALRenderer.h"
+
+#include <QApplication>
+#include <QFile>
+#include <QDir>
+#include <QSet>
+#include <QTextStream>
+#include <getopt.h>
+#include <iostream>
+
+QString commandline_commands;
+const char *make_command = NULL;
+QSet<QString> dependencies;
+QString currentdir;
+QString examplesdir;
+QString librarydir;
+
+using std::string;
+
+void handle_dep(QString filename)
+{
+	if (filename.startsWith("/"))
+		dependencies.insert(filename);
+	else
+		dependencies.insert(QDir::currentPath() + QString("/") + filename);
+	if (!QFile(filename).exists() && make_command) {
+		char buffer[4096];
+		snprintf(buffer, 4096, "%s '%s'", make_command, filename.replace("'", "'\\''").toUtf8().data());
+		system(buffer); // FIXME: Handle error
+	}
+}
+
+// FIXME: enforce some maximum cache size (old version had 100K vertices as limit)
+QHash<std::string, CGAL_Nef_polyhedron> cache;
+
+void cgalTree(Tree &tree)
+{
+	assert(tree.root());
+
+	CGALRenderer renderer(cache, tree);
+	Traverser render(renderer, *tree.root(), Traverser::PRE_AND_POSTFIX);
+	render.execute();
+}
+
+int main(int argc, char **argv)
+{
+	if (argc != 2) {
+		fprintf(stderr, "Usage: %s <file.scad>\n", argv[0]);
+		exit(1);
+	}
+
+	const char *filename = argv[1];
+
+	int rc = 0;
+
+	initialize_builtin_functions();
+	initialize_builtin_modules();
+
+	QApplication app(argc, argv, false);
+	QDir original_path = QDir::current();
+
+	currentdir = QDir::currentPath();
+
+	QDir libdir(QApplication::instance()->applicationDirPath());
+#ifdef Q_WS_MAC
+	libdir.cd("../Resources"); // Libraries can be bundled
+	if (!libdir.exists("libraries")) libdir.cd("../../..");
+#elif defined(Q_OS_UNIX)
+	if (libdir.cd("../share/openscad/libraries")) {
+		librarydir = libdir.path();
+	} else
+	if (libdir.cd("../../share/openscad/libraries")) {
+		librarydir = libdir.path();
+	} else
+	if (libdir.cd("../../libraries")) {
+		librarydir = libdir.path();
+	} else
+#endif
+	if (libdir.cd("libraries")) {
+		librarydir = libdir.path();
+	}
+
+	Context root_ctx;
+	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);
+
+
+	AbstractModule *root_module;
+	ModuleInstantiation root_inst;
+	AbstractNode *root_node;
+
+	QFileInfo fileInfo(filename);
+	handle_dep(filename);
+	FILE *fp = fopen(filename, "rt");
+	if (!fp) {
+		fprintf(stderr, "Can't open input file `%s'!\n", filename);
+		exit(1);
+	} else {
+		QString text;
+		char buffer[513];
+		int ret;
+		while ((ret = fread(buffer, 1, 512, fp)) > 0) {
+			buffer[ret] = 0;
+			text += buffer;
+		}
+		fclose(fp);
+		root_module = parse((text+commandline_commands).toAscii().data(), fileInfo.absolutePath().toLocal8Bit(), false);
+		if (!root_module) {
+			exit(1);
+		}
+	}
+
+	QDir::setCurrent(fileInfo.absolutePath());
+
+	AbstractNode::resetIndexCounter();
+	root_node = root_module->evaluate(&root_ctx, &root_inst);
+
+	Tree tree;
+	tree.setRoot(root_node);
+
+	cgalTree(tree);
+
+// 	std::cout << tree.getString(*root_node) << "\n";
+
+// 	CGALRenderer cgalrenderer(dumper.getCache());
+// 	PolySetCGALRenderer psrenderer(cgalrenderer);
+// 	PolySetRenderer::setRenderer(&psrenderer);
+
+	CGAL_Nef_polyhedron N = cache[tree.getString(*root_node)];
+
+	QDir::setCurrent(original_path.absolutePath());
+	QTextStream outstream(stdout);
+	export_stl(&N, outstream, NULL);
+
+	PolySetRenderer::setRenderer(NULL);
+
+	destroy_builtin_functions();
+	destroy_builtin_modules();
+
+	return rc;
+}
diff --git a/tests/csgtermtest.cc b/tests/csgtermtest.cc
new file mode 100644
index 0000000..be9314c
--- /dev/null
+++ b/tests/csgtermtest.cc
@@ -0,0 +1,184 @@
+/*
+ *  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.
+ *
+ *  As a special exception, you have permission to link this program
+ *  with the CGAL library and distribute executables, as long as you
+ *  follow the requirements of the GNU GPL in regard to all of the
+ *  software in the executable aside from CGAL.
+ *
+ *  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
+ *
+ */
+
+#include "CSGTermRenderer.h"
+#include "CSGTextCache.h"
+#include "openscad.h"
+#include "node.h"
+#include "module.h"
+#include "context.h"
+#include "value.h"
+#include "export.h"
+#include "builtin.h"
+#include "Tree.h"
+#include "csgterm.h"
+
+#include <QApplication>
+#include <QFile>
+#include <QDir>
+#include <QSet>
+#include <getopt.h>
+#include <assert.h>
+#include <iostream>
+
+using std::cout;
+
+QString commandline_commands;
+const char *make_command = NULL;
+QSet<QString> dependencies;
+QString currentdir;
+QString examplesdir;
+QString librarydir;
+
+void handle_dep(QString filename)
+{
+	if (filename.startsWith("/"))
+		dependencies.insert(filename);
+	else
+		dependencies.insert(QDir::currentPath() + QString("/") + filename);
+	if (!QFile(filename).exists() && make_command) {
+		char buffer[4096];
+		snprintf(buffer, 4096, "%s '%s'", make_command, filename.replace("'", "'\\''").toUtf8().data());
+		system(buffer); // FIXME: Handle error
+	}
+}
+
+int main(int argc, char **argv)
+{
+	if (argc != 2) {
+		fprintf(stderr, "Usage: %s <file.scad>\n", argv[0]);
+		exit(1);
+	}
+
+	const char *filename = argv[1];
+
+	int rc = 0;
+
+	initialize_builtin_functions();
+	initialize_builtin_modules();
+
+	QApplication app(argc, argv, false);
+	QDir original_path = QDir::current();
+
+	currentdir = QDir::currentPath();
+
+	QDir libdir(QApplication::instance()->applicationDirPath());
+#ifdef Q_WS_MAC
+	libdir.cd("../Resources"); // Libraries can be bundled
+	if (!libdir.exists("libraries")) libdir.cd("../../..");
+#elif defined(Q_OS_UNIX)
+	if (libdir.cd("../share/openscad/libraries")) {
+		librarydir = libdir.path();
+	} else
+	if (libdir.cd("../../share/openscad/libraries")) {
+		librarydir = libdir.path();
+	} else
+	if (libdir.cd("../../libraries")) {
+		librarydir = libdir.path();
+	} else
+#endif
+	if (libdir.cd("libraries")) {
+		librarydir = libdir.path();
+	}
+
+	Context root_ctx;
+	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);
+
+
+	AbstractModule *root_module;
+	ModuleInstantiation root_inst;
+	AbstractNode *root_node;
+
+	QFileInfo fileInfo(filename);
+	handle_dep(filename);
+	FILE *fp = fopen(filename, "rt");
+	if (!fp) {
+		fprintf(stderr, "Can't open input file `%s'!\n", filename);
+		exit(1);
+	} else {
+		QString text;
+		char buffer[513];
+		int ret;
+		while ((ret = fread(buffer, 1, 512, fp)) > 0) {
+			buffer[ret] = 0;
+			text += buffer;
+		}
+		fclose(fp);
+		root_module = parse((text+commandline_commands).toAscii().data(), fileInfo.absolutePath().toLocal8Bit(), false);
+		if (!root_module) {
+			exit(1);
+		}
+	}
+
+	QDir::setCurrent(fileInfo.absolutePath());
+
+	AbstractNode::resetIndexCounter();
+	root_node = root_module->evaluate(&root_ctx, &root_inst);
+
+	Tree tree;
+	tree.setRoot(root_node);
+
+//	cout << tree.getString(*root_node) << "\n";
+
+	CSGTermRenderer renderer;
+	Traverser render(renderer, *tree.root(), Traverser::PRE_AND_POSTFIX);
+	render.execute();
+	
+	// cout << "Stored terms: " << renderer.stored_term.size() << "\n";
+	// for (map<int, class CSGTerm*>::iterator iter = renderer.stored_term.begin();
+	// 		 iter != renderer.stored_term.end();
+	// 		 iter++) {
+	// 	cout << iter->first << ":" << (iter->second ? iter->second->label : "NULL") << "\n";
+	// }
+
+	// if (renderer.background) cout << "Background terms: " << renderer.background->size() << "\n";
+	// if (renderer.highlights) cout << "Highlights terms: " << renderer.highlights->size() << "\n";
+
+	CSGTerm *root_term = renderer.stored_term[root_node->index()];
+	if (root_term) {
+		cout << root_term->dump() << "\n";
+	}
+	else {
+		cout << "No top-level CSG object\n";
+	}
+
+	destroy_builtin_functions();
+	destroy_builtin_modules();
+
+	return rc;
+}
diff --git a/tests/csgtexttest.cc b/tests/csgtexttest.cc
new file mode 100644
index 0000000..d097f7d
--- /dev/null
+++ b/tests/csgtexttest.cc
@@ -0,0 +1,170 @@
+/*
+ *  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.
+ *
+ *  As a special exception, you have permission to link this program
+ *  with the CGAL library and distribute executables, as long as you
+ *  follow the requirements of the GNU GPL in regard to all of the
+ *  software in the executable aside from CGAL.
+ *
+ *  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
+ *
+ */
+
+#include "CSGTextRenderer.h"
+#include "CSGTextCache.h"
+#include "openscad.h"
+#include "node.h"
+#include "module.h"
+#include "context.h"
+#include "value.h"
+#include "export.h"
+#include "builtin.h"
+#include "Tree.h"
+
+#include <QApplication>
+#include <QFile>
+#include <QDir>
+#include <QSet>
+#include <getopt.h>
+#include <assert.h>
+#include <iostream>
+
+QString commandline_commands;
+const char *make_command = NULL;
+QSet<QString> dependencies;
+QString currentdir;
+QString examplesdir;
+QString librarydir;
+
+void handle_dep(QString filename)
+{
+	if (filename.startsWith("/"))
+		dependencies.insert(filename);
+	else
+		dependencies.insert(QDir::currentPath() + QString("/") + filename);
+	if (!QFile(filename).exists() && make_command) {
+		char buffer[4096];
+		snprintf(buffer, 4096, "%s '%s'", make_command, filename.replace("'", "'\\''").toUtf8().data());
+		system(buffer); // FIXME: Handle error
+	}
+}
+
+void csgTree(CSGTextCache &cache, const AbstractNode &root)
+{
+	CSGTextRenderer renderer(cache);
+	Traverser render(renderer, root, Traverser::PRE_AND_POSTFIX);
+	render.execute();
+}
+
+int main(int argc, char **argv)
+{
+	if (argc != 2) {
+		fprintf(stderr, "Usage: %s <file.scad>\n", argv[0]);
+		exit(1);
+	}
+
+	const char *filename = argv[1];
+
+	int rc = 0;
+
+	initialize_builtin_functions();
+	initialize_builtin_modules();
+
+	QApplication app(argc, argv, false);
+	QDir original_path = QDir::current();
+
+	currentdir = QDir::currentPath();
+
+	QDir libdir(QApplication::instance()->applicationDirPath());
+#ifdef Q_WS_MAC
+	libdir.cd("../Resources"); // Libraries can be bundled
+	if (!libdir.exists("libraries")) libdir.cd("../../..");
+#elif defined(Q_OS_UNIX)
+	if (libdir.cd("../share/openscad/libraries")) {
+		librarydir = libdir.path();
+	} else
+	if (libdir.cd("../../share/openscad/libraries")) {
+		librarydir = libdir.path();
+	} else
+	if (libdir.cd("../../libraries")) {
+		librarydir = libdir.path();
+	} else
+#endif
+	if (libdir.cd("libraries")) {
+		librarydir = libdir.path();
+	}
+
+	Context root_ctx;
+	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);
+
+
+	AbstractModule *root_module;
+	ModuleInstantiation root_inst;
+	AbstractNode *root_node;
+
+	QFileInfo fileInfo(filename);
+	handle_dep(filename);
+	FILE *fp = fopen(filename, "rt");
+	if (!fp) {
+		fprintf(stderr, "Can't open input file `%s'!\n", filename);
+		exit(1);
+	} else {
+		QString text;
+		char buffer[513];
+		int ret;
+		while ((ret = fread(buffer, 1, 512, fp)) > 0) {
+			buffer[ret] = 0;
+			text += buffer;
+		}
+		fclose(fp);
+		root_module = parse((text+commandline_commands).toAscii().data(), fileInfo.absolutePath().toLocal8Bit(), false);
+		if (!root_module) {
+			exit(1);
+		}
+	}
+
+	QDir::setCurrent(fileInfo.absolutePath());
+
+	AbstractNode::resetIndexCounter();
+	root_node = root_module->evaluate(&root_ctx, &root_inst);
+
+	Tree tree;
+	tree.setRoot(root_node);
+	CSGTextCache csgcache(tree);
+
+	csgTree(csgcache, *root_node);
+// 	std::cout << tree.getString(*root_node) << "\n";
+
+	std::cout << csgcache[*root_node] << "\n";
+
+	destroy_builtin_functions();
+	destroy_builtin_modules();
+
+	return rc;
+}