work on raytracing

geo/Ray3.h

@@ -0,0 +1,28 @@
+#ifndef RAY3_H
+#define RAY3_H
+
+#include "Point3.h"
+
+struct Ray3 {
+
+	/** starting point */
+	Point3 start;
+
+	/** ray's direction */
+	Point3 dir;
+
+public:
+
+	/** empty */
+	Ray3() : start(), dir() {
+		;
+	}
+
+	/** ctor */
+	Ray3(Point3 start, Point3 dir) : start(start), dir(dir) {
+		;
+	}
+
+};
+
+#endif // RAY3_H