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#ifndef CGALRENDERER_H_
#define CGALRENDERER_H_
#include "myqhash.h"
#include "visitor.h"
#include "Tree.h"
#include "cgal.h"
#include <string>
#include <map>
#include <list>
extern CGAL_Nef_polyhedron3 minkowski3(CGAL_Nef_polyhedron3 a, CGAL_Nef_polyhedron3 b);
extern CGAL_Nef_polyhedron2 minkowski2(CGAL_Nef_polyhedron2 a, CGAL_Nef_polyhedron2 b);
using std::string;
using std::map;
using std::list;
using std::pair;
class CGALRenderer : public Visitor
{
public:
enum CsgOp {UNION, INTERSECTION, DIFFERENCE, MINKOWSKI};
// FIXME: If a cache is not given, we need to fix this ourselves
CGALRenderer(QHash<string, CGAL_Nef_polyhedron> &cache, const Tree &tree) : cache(cache), tree(tree) {}
virtual ~CGALRenderer() {}
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);
CGAL_Nef_polyhedron renderCGALMesh(const AbstractNode &node);
CGAL_Nef_polyhedron renderCGALMesh(const PolySet &polyset);
private:
void addToParent(const State &state, const AbstractNode &node);
bool isCached(const AbstractNode &node) const;
void process(CGAL_Nef_polyhedron &target, const CGAL_Nef_polyhedron &src, CGALRenderer::CsgOp op);
void applyToChildren(const AbstractNode &node, CGALRenderer::CsgOp op);
string currindent;
typedef list<pair<const AbstractNode *, string> > ChildList;
map<int, ChildList> visitedchildren;
QHash<string, CGAL_Nef_polyhedron> &cache;
const Tree &tree;
};
#endif
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