1 files changed, 39 insertions, 0 deletions
diff --git a/src/PolySetEvaluator.h b/src/PolySetEvaluator.h
new file mode 100644
index 0000000..dcc67db
--- /dev/null
+++ b/src/PolySetEvaluator.h
@@ -0,0 +1,39 @@
+#ifndef POLYSETEVALUATOR_H_
+#define POLYSETEVALUATOR_H_
+
+#include "myqhash.h"
+#include "node.h"
+#include <QCache>
+
+class PolySetEvaluator
+{
+public:
+	enum EvaluateMode { EVALUATE_CGAL, EVALUATE_OPENCSG };
+	PolySetEvaluator() : cache(100) {}
+
+	virtual ~PolySetEvaluator() {}
+
+	virtual PolySet *evaluatePolySet(const class ProjectionNode &, AbstractPolyNode::render_mode_e) = 0;
+	virtual PolySet *evaluatePolySet(const class DxfLinearExtrudeNode &, AbstractPolyNode::render_mode_e) = 0;
+	virtual PolySet *evaluatePolySet(const class DxfRotateExtrudeNode &, AbstractPolyNode::render_mode_e) = 0;
+
+	void clearCache() {
+		this->cache.clear();
+	}
+
+protected:
+
+	struct cache_entry {
+		class PolySet *ps;
+		QString msg;
+		cache_entry(PolySet *ps);
+		~cache_entry();
+	};
+
+	QCache<std::string, cache_entry> cache;
+
+private:
+	static PolySetEvaluator *global_evaluator;
+};
+
+#endif