1 files changed, 255 insertions, 0 deletions
diff --git a/tests/csgtestcore.cc b/tests/csgtestcore.cc
new file mode 100644
index 0000000..efecf5e
--- /dev/null
+++ b/tests/csgtestcore.cc
@@ -0,0 +1,255 @@
+// csg test core, used by throwntegether test and opencsg test
+#include "csgtestcore.h"
+
+#include <GL/glew.h>
+#include "openscad.h"
+#include "handle_dep.h"
+#include "builtin.h"
+#include "context.h"
+#include "node.h"
+#include "module.h"
+#include "polyset.h"
+#include "Tree.h"
+#include "CSGTermEvaluator.h"
+#include "CGALEvaluator.h"
+#include "PolySetCGALEvaluator.h"
+
+#include "OpenCSGRenderer.h"
+#include "ThrownTogetherRenderer.h"
+
+#include "csgterm.h"
+#include "OffscreenView.h"
+
+#include <QApplication>
+#include <QFile>
+#include <QDir>
+#include <QSet>
+#include <QTimer>
+#include <sstream>
+
+using std::cerr;
+using std::cout;
+
+std::string commandline_commands;
+QString librarydir;
+
+//#define DEBUG
+
+struct CsgInfo
+{
+	CSGTerm *root_norm_term;          // Normalized CSG products
+	class CSGChain *root_chain;
+	std::vector<CSGTerm*> highlight_terms;
+	CSGChain *highlights_chain;
+	std::vector<CSGTerm*> background_terms;
+	CSGChain *background_chain;
+	OffscreenView *glview;
+};
+
+AbstractNode *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;
+}
+
+int csgtestcore(int argc, char *argv[], test_type_e test_type)
+{
+	if (argc < 2) {
+		fprintf(stderr, "Usage: %s <file.scad>\n", argv[0]);
+		exit(1);
+	}
+
+	const char *filename = argv[1];
+
+	initialize_builtin_functions();
+	initialize_builtin_modules();
+
+	QApplication app(argc, argv);
+
+	QDir original_path = QDir::current();
+
+	QString 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.append(new Value(0.0));
+	zero3.append(new Value(0.0));
+	zero3.append(new Value(0.0));
+	root_ctx.set_variable("$vpt", zero3);
+	root_ctx.set_variable("$vpr", zero3);
+
+
+	AbstractModule *root_module;
+	ModuleInstantiation root_inst;
+
+	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 {
+		std::stringstream text;
+		char buffer[513];
+		int ret;
+		while ((ret = fread(buffer, 1, 512, fp)) > 0) {
+			buffer[ret] = 0;
+			text << buffer;
+		}
+		fclose(fp);
+		text << commandline_commands;
+		root_module = parse(text.str().c_str(), fileInfo.absolutePath().toLocal8Bit(), false);
+		if (!root_module) {
+			exit(1);
+		}
+	}
+
+	QDir::setCurrent(fileInfo.absolutePath());
+
+	AbstractNode::resetIndexCounter();
+	AbstractNode *absolute_root_node = root_module->evaluate(&root_ctx, &root_inst);
+	AbstractNode *root_node;
+	// Do we have an explicit root node (! modifier)?
+	if (!(root_node = find_root_tag(absolute_root_node))) root_node = absolute_root_node;
+
+	Tree tree(root_node);
+
+	CsgInfo csgInfo;
+	CGALEvaluator cgalevaluator(tree);
+	CSGTermEvaluator evaluator(tree, &cgalevaluator.psevaluator);
+	CSGTerm *root_raw_term = evaluator.evaluateCSGTerm(*root_node, 
+																										 csgInfo.highlight_terms, 
+																										 csgInfo.background_terms);
+
+	if (!root_raw_term) {
+		cerr << "Error: CSG generation failed! (no top level object found)\n";
+		return 1;
+	}
+
+	// CSG normalization
+	csgInfo.root_norm_term = root_raw_term->link();
+	while (1) {
+		CSGTerm *n = csgInfo.root_norm_term->normalize();
+		csgInfo.root_norm_term->unlink();
+		if (csgInfo.root_norm_term == n)
+			break;
+		csgInfo.root_norm_term = n;
+	}
+		
+	assert(csgInfo.root_norm_term);
+	
+	csgInfo.root_chain = new CSGChain();
+	csgInfo.root_chain->import(csgInfo.root_norm_term);
+	fprintf(stderr, "Normalized CSG tree has %d elements\n", csgInfo.root_chain->polysets.size());
+	
+	if (csgInfo.highlight_terms.size() > 0) {
+		cerr << "Compiling highlights (" << csgInfo.highlight_terms.size() << "  CSG Trees)...\n";
+		
+		csgInfo.highlights_chain = new CSGChain();
+		for (unsigned int i = 0; i < csgInfo.highlight_terms.size(); i++) {
+			while (1) {
+				CSGTerm *n = csgInfo.highlight_terms[i]->normalize();
+				csgInfo.highlight_terms[i]->unlink();
+				if (csgInfo.highlight_terms[i] == n)
+					break;
+				csgInfo.highlight_terms[i] = n;
+			}
+			csgInfo.highlights_chain->import(csgInfo.highlight_terms[i]);
+		}
+	}
+	
+	if (csgInfo.background_terms.size() > 0) {
+		cerr << "Compiling background (" << csgInfo.background_terms.size() << " CSG Trees)...\n";
+		
+		csgInfo.background_chain = new CSGChain();
+		for (unsigned int i = 0; i < csgInfo.background_terms.size(); i++) {
+			while (1) {
+				CSGTerm *n = csgInfo.background_terms[i]->normalize();
+				csgInfo.background_terms[i]->unlink();
+				if (csgInfo.background_terms[i] == n)
+					break;
+				csgInfo.background_terms[i] = n;
+			}
+			csgInfo.background_chain->import(csgInfo.background_terms[i]);
+		}
+	}
+	
+	QDir::setCurrent(original_path.absolutePath());
+
+	csgInfo.glview = new OffscreenView(512,512);
+	BoundingBox bbox = csgInfo.root_chain->getBoundingBox();
+
+	Vector3d center = (bbox.min() + bbox.max()) / 2;
+	double radius = (bbox.max() - bbox.min()).norm() / 2;
+
+
+	Vector3d cameradir(1, 1, -0.5);
+	Vector3d camerapos = center - radius*1.8*cameradir;
+	csgInfo.glview->setCamera(camerapos, center);
+
+	glewInit();
+#ifdef DEBUG
+	cout << "GLEW version " << glewGetString(GLEW_VERSION) << "\n";
+	cout << (const char *)glGetString(GL_RENDERER) << "(" << (const char *)glGetString(GL_VENDOR) << ")\n"
+			 << "OpenGL version " << (const char *)glGetString(GL_VERSION) << "\n";
+	cout  << "Extensions: " << (const char *)glGetString(GL_EXTENSIONS) << "\n";
+
+
+	if (GLEW_ARB_framebuffer_object) {
+		cout << "ARB_FBO supported\n";
+	}
+	if (GLEW_EXT_framebuffer_object) {
+		cout << "EXT_FBO supported\n";
+	}
+	if (GLEW_EXT_packed_depth_stencil) {
+		cout << "EXT_packed_depth_stencil\n";
+	}
+#endif
+
+	OpenCSGRenderer opencsgRenderer(csgInfo.root_chain, csgInfo.highlights_chain, csgInfo.background_chain, csgInfo.glview->shaderinfo);
+	ThrownTogetherRenderer thrownTogetherRenderer(csgInfo.root_chain, csgInfo.highlights_chain, csgInfo.background_chain);
+
+	if (test_type == TEST_THROWNTOGETHER)
+		csgInfo.glview->setRenderer(&thrownTogetherRenderer);
+	else
+		csgInfo.glview->setRenderer(&opencsgRenderer);
+
+	csgInfo.glview->paintGL();
+
+	csgInfo.glview->save("/dev/stdout");
+	
+	destroy_builtin_functions();
+	destroy_builtin_modules();
+
+	return 0;
+}