1 files changed, 49 insertions, 0 deletions
diff --git a/samples/OpenGL/qt_terr/quad.h b/samples/OpenGL/qt_terr/quad.h
new file mode 100644
index 0000000..36850e6
--- /dev/null
+++ b/samples/OpenGL/qt_terr/quad.h
@@ -0,0 +1,49 @@
+#ifndef QUAD_H
+#define QUAD_H
+
+#include <vector>
+
+class Quad
+{
+public:
+//	double x1,x2, x_mid;
+//	double y1,y2, y_mid;
+	
+	unsigned int v1_offset; 
+	unsigned int v2_offset;
+	unsigned int v_mid_offset;
+
+	double *x1() { return &(*V)[v1_offset + 0]; }
+	double *y1() { return &(*V)[v1_offset + 1]; }
+	double *z1() { return &(*V)[v1_offset + 2]; }
+
+	double *x2() { return &(*V)[v2_offset + 0]; }
+	double *y2() { return &(*V)[v2_offset + 1]; }
+	double *z2() { return &(*V)[v2_offset + 2]; }
+	
+	double *x_mid() { return &(*V)[v_mid_offset + 0]; }
+	double *y_mid() { return &(*V)[v_mid_offset + 1]; }
+	double *z_mid() { return &(*V)[v_mid_offset + 2]; }
+
+	Quad *quads[2][2];
+
+public:
+	Quad();
+	Quad(Quad &q);
+	~Quad();
+	Quad& operator=(Quad &q);
+
+	virtual void split();
+	virtual bool is_split();
+
+	virtual void track_down(double x, double y, int levels);
+	virtual Quad *get_at(double x, double y, int max_level=0, int level=0);
+
+	virtual void set_range(double nx1, double nx2, double ny1, double ny2);
+
+protected:
+	Quad(std::vector<double>*);
+	std::vector<double> * const V;
+};
+
+#endif//QUAD_H