Added CSGTextCache for experimenting with cache-tree organization

8 files changed, 96 insertions, 131 deletions

diff --git a/test-code/CSGTextCache.cc b/test-code/CSGTextCache.cc
new file mode 100644
index 0000000..4234c63
--- /dev/null
+++ b/test-code/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/test-code/CSGTextCache.h b/test-code/CSGTextCache.h
new file mode 100644
index 0000000..57a6972
--- /dev/null
+++ b/test-code/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/test-code/CSGTextRenderer.cc b/test-code/CSGTextRenderer.cc
index ab498f6..6f1010c 100644
--- a/test-code/CSGTextRenderer.cc
+++ b/test-code/CSGTextRenderer.cc
@@ -17,7 +17,7 @@
 
 bool CSGTextRenderer::isCached(const AbstractNode &node)
 {
-	return this->cache.contains(this->tree.getString(node));
+	return this->cache.contains(node);
 }
 
 /*!
@@ -47,49 +47,6 @@ CSGTextRenderer::process(string &target, const string &src, CSGTextRenderer::Csg
 	}
 }
 
-// /*!
-// 	Modifies target by applying op to target and src:
-// 	target = target [op] src
-//  */
-// void process(CGAL_Nef_polyhedron &target, const CGAL_Nef_polyhedron &src, CsgOp op)
-// {
-// 	if (target.dim == 2) {
-// 		switch (op) {
-// 		case UNION:
-// 			target.p2 += src.p2;
-// 			break;
-// 		case INTERSECTION:
-// 			target.p2 *= src.p2;
-// 			break;
-// 		case DIFFERENCE:
-// 			target.p2 -= src.p2;
-// 			break;
-// 		case MINKOWSKI:
-// 			target.p2 = minkowski2(target.p2, src.p2);
-// 			break;
-// 		}
-// 	}
-// 	else if (target.dim == 3) {
-// 		switch (op) {
-// 		case UNION:
-// 			target.p3 += src.p3;
-// 			break;
-// 		case INTERSECTION:
-// 			target.p3 *= src.p3;
-// 			break;
-// 		case DIFFERENCE:
-// 			target.p3 -= src.p3;
-// 			break;
-// 		case MINKOWSKI:
-// 			target.p3 = minkowski3(target.p3, src.p3);
-// 			break;
-// 		}
-// 	}
-// 	else {
-// 		assert(false && "Dimention of Nef polyhedron must be 2 or 3");
-// 	}
-// }
-
 void CSGTextRenderer::applyToChildren(const AbstractNode &node, CSGTextRenderer::CsgOp op)
 {
 	std::stringstream stream;
@@ -99,26 +56,25 @@ void CSGTextRenderer::applyToChildren(const AbstractNode &node, CSGTextRenderer:
 	if (this->visitedchildren[node.index()].size() > 0) {
 		// FIXME: assert that cache contains nodes in code below
 		bool first = true;
-//		CGAL_Nef_polyhedron N;
 		for (ChildList::const_iterator iter = this->visitedchildren[node.index()].begin();
 				 iter != this->visitedchildren[node.index()].end();
 				 iter++) {
-			const AbstractNode *chnode = iter->first;
-			const string &chcacheid = iter->second;
+			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[chcacheid];
+				N += "(" + this->cache[*chnode];
 // 				if (N.dim != 0) first = false; // FIXME: when can this happen?
 				first = false;
 			} else {
-				process(N, this->cache[chcacheid], op);
+				process(N, this->cache[*chnode], op);
 			}
 			chnode->progress_report();
 		}
 		N += ")";
 	}
-	this->cache.insert(this->tree.getString(node), N);
+	this->cache.insert(node, N);
 }
 
 /*
@@ -204,23 +160,8 @@ Response CSGTextRenderer::visit(const State &state, const AbstractPolyNode &node
 	// FIXME: Manage caching
 	// FIXME: Will generate one single Nef polyhedron (no csg ops necessary)
  
-// 	PolySet *ps = render_polyset(RENDER_CGAL);
-// 	try {
-// 		CGAL_Nef_polyhedron N = ps->renderCSGMesh();
-// 		cgal_nef_cache.insert(cache_id, new cgal_nef_cache_entry(N), N.weight());
-// 		print_messages_pop();
-// 		progress_report();
-		
-// 		ps->unlink();
-// 		return N;
-// 	}
-// 	catch (...) { // Don't leak the PolySet on ProgressCancelException
-// 		ps->unlink();
-// 		throw;
-// 	}
-
 			string N = typeid(node).name();
-			this->cache.insert(this->tree.getString(node), N);
+			this->cache.insert(node, N);
 		
 // 		std::cout << "Insert: " << N << "\n";
 // 		std::cout << "Node: " << cacheid.toStdString() << "\n\n";
@@ -240,26 +181,6 @@ 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(std::make_pair(&node, this->tree.getString(node)));
+		this->visitedchildren[state.parent()->index()].push_back(&node);
 	}
 }
-
-
-
-static uint hash(const uchar *p, int n)
-{
-    uint h = 0;
-    uint g;
-
-    while (n--) {
-        h = (h << 4) + *p++;
-        if ((g = (h & 0xf0000000)) != 0)
-            h ^= g >> 23;
-        h &= ~g;
-    }
-    return h;
-}
-
-uint qHash(const string &str) {
-	return hash(reinterpret_cast<const uchar *>(str.c_str()), str.length());
-}
diff --git a/test-code/CSGTextRenderer.h b/test-code/CSGTextRenderer.h
index 236f900..4085e60 100644
--- a/test-code/CSGTextRenderer.h
+++ b/test-code/CSGTextRenderer.h
@@ -1,26 +1,20 @@
 #ifndef CSGTEXTRENDERER_H_
 #define CSGTEXTRENDERER_H_
 
-#include <qglobal.h>
-#include <string>
-extern uint qHash(const std::string &);
+#include "visitor.h"
+#include "CSGTextCache.h"
 
 #include <map>
 #include <list>
-#include <QHash>
-#include "visitor.h"
-#include "Tree.h"
 
 using std::string;
 using std::map;
 using std::list;
-using std::pair;
 
 class CSGTextRenderer : public Visitor
 {
 public:
-	CSGTextRenderer(QHash<string, string> &cache, const Tree &tree) : 
-		cache(cache), tree(tree) {}
+	CSGTextRenderer(CSGTextCache &cache) : cache(cache) {}
   virtual ~CSGTextRenderer() {}
 
   virtual Response visit(const State &state, const AbstractNode &node);
@@ -37,11 +31,10 @@ private:
 	void applyToChildren(const AbstractNode &node, CSGTextRenderer::CsgOp op);
 
   string currindent;
-  typedef list<pair<const AbstractNode *, string> > ChildList;
+  typedef list<const AbstractNode *> ChildList;
   map<int, ChildList> visitedchildren;
 
-	QHash<string, string> &cache;
-	const Tree &tree;
+	CSGTextCache &cache;
 };
 
 #endif
diff --git a/test-code/cgaltest.cc b/test-code/cgaltest.cc
index 147e390..ed646ce 100644
--- a/test-code/cgaltest.cc
+++ b/test-code/cgaltest.cc
@@ -23,6 +23,7 @@
  *
  */
 
+#include "myqhash.h"
 #include "openscad.h"
 #include "node.h"
 #include "module.h"
@@ -30,10 +31,9 @@
 #include "value.h"
 #include "export.h"
 #include "builtin.h"
-#include "nodedumper.h"
+#include "Tree.h"
 #include "CGALRenderer.h"
 #include "PolySetCGALRenderer.h"
-#include "Tree.h"
 
 #include <QApplication>
 #include <QFile>
@@ -49,6 +49,8 @@ QString currentdir;
 QString examplesdir;
 QString librarydir;
 
+using std::string;
+
 void handle_dep(QString filename)
 {
 	if (filename.startsWith("/"))
@@ -63,20 +65,14 @@ void handle_dep(QString filename)
 }
 
 // FIXME: enforce some maximum cache size (old version had 100K vertices as limit)
-QHash<string, CGAL_Nef_polyhedron> cache;
+QHash<std::string, CGAL_Nef_polyhedron> cache;
 
 void cgalTree(Tree &tree)
 {
-	const AbstractNode *root = tree.root();
-	assert(root);
-	NodeCache<string> &cache = tree.cache();
-	NodeDumper dumper(cache, false);
-	Traverser trav(dumper, *root, Traverser::PRE_AND_POSTFIX);
-	trav.execute();
-	assert(!cache[*root].empty());
-
-	CSGTextRenderer renderer(csgcache, cache);
-	Traverser render(renderer, *root, Traverser::PRE_AND_POSTFIX);
+	assert(tree.root());
+
+	CGALRenderer renderer(cache, tree);
+	Traverser render(renderer, *tree.root(), Traverser::PRE_AND_POSTFIX);
 	render.execute();
 }
 
@@ -170,16 +166,13 @@ int main(int argc, char **argv)
 
 	cgalTree(tree);
 
- 	std::cout << cache[tree.cache()[*root_node]] << "\n";
+ 	std::cout << tree.getString(*root_node) << "\n";
 
-	CGALRenderer cgalrenderer(dumper.getCache());
-	PolySetCGALRenderer psrenderer(cgalrenderer);
-	PolySetRenderer::setRenderer(&psrenderer);
+// 	CGALRenderer cgalrenderer(dumper.getCache());
+// 	PolySetCGALRenderer psrenderer(cgalrenderer);
+// 	PolySetRenderer::setRenderer(&psrenderer);
 
-// This is done in renderCGALMesh() for convenience, but can be overridden here
-// 	Traverser render(cgalrenderer, *root_node, Traverser::PRE_AND_POSTFIX);
-// 	render.execute();
-	CGAL_Nef_polyhedron N = cgalrenderer.renderCGALMesh(*root_node);
+	CGAL_Nef_polyhedron N = cache[tree.getString(*root_node)];
 
 	QDir::setCurrent(original_path.absolutePath());
 	export_stl(&N, fileInfo.baseName() + ".stl", NULL);
diff --git a/test-code/cgaltest.pro b/test-code/cgaltest.pro
index a91cb5b..5f0ea99 100644
--- a/test-code/cgaltest.pro
+++ b/test-code/cgaltest.pro
@@ -62,6 +62,7 @@ HEADERS += ../src/builtin.h \
            ../src/state.h \
            ../src/PolySetRenderer.h \
            ../src/PolySetCGALRenderer.h \
+           ../src/myqhash.h \
            ../src/Tree.h
 
 SOURCES += cgaltest.cc \
@@ -100,4 +101,5 @@ SOURCES += cgaltest.cc \
            ../src/traverser.cc \
            ../src/PolySetRenderer.cc \
            ../src/PolySetCGALRenderer.cc \
+           ../src/qhash.cc \
            ../src/Tree.cc
diff --git a/test-code/csgtexttest.cc b/test-code/csgtexttest.cc
index f464900..95b530d 100644
--- a/test-code/csgtexttest.cc
+++ b/test-code/csgtexttest.cc
@@ -24,6 +24,7 @@
  */
 
 #include "CSGTextRenderer.h"
+#include "CSGTextCache.h"
 #include "openscad.h"
 #include "node.h"
 #include "module.h"
@@ -61,14 +62,10 @@ void handle_dep(QString filename)
 	}
 }
 
-
-QHash<string, string> csgcache;
-void csgTree(Tree &tree)
+void csgTree(CSGTextCache &cache, const AbstractNode &root)
 {
-	assert(tree.root());
-
-	CSGTextRenderer renderer(csgcache, tree);
-	Traverser render(renderer, *tree.root(), Traverser::PRE_AND_POSTFIX);
+	CSGTextRenderer renderer(cache);
+	Traverser render(renderer, root, Traverser::PRE_AND_POSTFIX);
 	render.execute();
 }
 
@@ -159,11 +156,12 @@ int main(int argc, char **argv)
 
 	Tree tree;
 	tree.setRoot(root_node);
+	CSGTextCache csgcache(tree);
 
-	csgTree(tree);
+	csgTree(csgcache, *root_node);
  	std::cout << tree.getString(*root_node) << "\n";
 
-	std::cout << csgcache[tree.getString(*root_node)] << "\n";
+	std::cout << csgcache[*root_node] << "\n";
 
 	destroy_builtin_functions();
 	destroy_builtin_modules();
diff --git a/test-code/csgtexttest.pro b/test-code/csgtexttest.pro
index a1c3148..8fd4769 100644
--- a/test-code/csgtexttest.pro
+++ b/test-code/csgtexttest.pro
@@ -66,7 +66,9 @@ HEADERS += ../src/builtin.h \
            ../src/state.h \
            ../src/PolySetRenderer.h \
            ../src/Tree.h \
-           CSGTextRenderer.h
+           ../src/myqhash.h \
+           CSGTextRenderer.h \
+           CSGTextCache.h
 
 SOURCES += csgtexttest.cc \
            ../src/export.cc \
@@ -100,4 +102,6 @@ SOURCES += csgtexttest.cc \
            ../src/traverser.cc \
            ../src/PolySetRenderer.cc \
            ../src/Tree.cc \
-           CSGTextRenderer.cc
+           ../src/qhash.cc \
+           CSGTextRenderer.cc \
+           CSGTextCache.cc