1 files changed, 51 insertions, 0 deletions
diff --git a/src/csgterm.h b/src/csgterm.h
new file mode 100644
index 0000000..35d071d
--- /dev/null
+++ b/src/csgterm.h
@@ -0,0 +1,51 @@
+#ifndef CSGTERM_H_
+#define CSGTERM_H_
+
+#include <QString>
+#include <QVector>
+
+class CSGTerm
+{
+public:
+	enum type_e {
+		TYPE_PRIMITIVE,
+		TYPE_UNION,
+		TYPE_INTERSECTION,
+		TYPE_DIFFERENCE
+	};
+
+	type_e type;
+	class PolySet *polyset;
+	QString label;
+	CSGTerm *left;
+	CSGTerm *right;
+	double m[20];
+	int refcounter;
+
+	CSGTerm(PolySet *polyset, double m[20], QString label);
+	CSGTerm(type_e type, CSGTerm *left, CSGTerm *right);
+
+	CSGTerm *normalize();
+	CSGTerm *normalize_tail();
+
+	CSGTerm *link();
+	void unlink();
+	QString dump();
+};
+
+class CSGChain
+{
+public:
+	QVector<PolySet*> polysets;
+	QVector<double*> matrices;
+	QVector<CSGTerm::type_e> types;
+	QVector<QString> labels;
+
+	CSGChain();
+
+	void add(PolySet *polyset, double *m, CSGTerm::type_e type, QString label);
+	void import(CSGTerm *term, CSGTerm::type_e type = CSGTerm::TYPE_UNION);
+	QString dump();
+};
+
+#endif