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// csg test core, used by throwntegether test and opencsg test
#include "csgtestcore.h"
#include "system-gl.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
class CsgInfo
{
public:
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;
};
CsgInfo::CsgInfo() {
root_norm_term = NULL;
root_chain = NULL;
highlight_terms = std::vector<CSGTerm*>();
highlights_chain = NULL;
background_terms = std::vector<CSGTerm*>();
background_chain = NULL;
glview = NULL;
}
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 != 3) {
fprintf(stderr, "Usage: %s <file.scad> <output.png>\n", argv[0]);
exit(1);
}
std::string filename(argv[1]);
std::string outfile(argv[2]);
initialize_builtin_functions();
initialize_builtin_modules();
QApplication app(argc, argv, false);
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.c_str());
handle_dep(filename);
FILE *fp = fopen(filename.c_str(), "rt");
if (!fp) {
fprintf(stderr, "Can't open input file `%s'!\n", filename.c_str());
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 = 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());
try {
csgInfo.glview = new OffscreenView(512,512);
} catch (int error) {
fprintf(stderr,"Can't create OpenGL OffscreenView. Code: %i. Exiting.\n", error);
exit(1);
}
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);
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(outfile.c_str());
destroy_builtin_functions();
destroy_builtin_modules();
return 0;
}
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