Sample Mode

The mode is used to scale the 3D model in a local co-ordinate system with a horizontal reference plane. It is especially suitable for underground environment. The mode requires defining three points, two points provide scale and orientation of the x-axis while the third point defines the xy plane. The Sample Mode is based in a right handed co-ordinate system and requires a First Point, a Second Point and a Plane Point. The local co-ordinate system is defined as follows:

• The x-axis points from the Second Point to the First Point
• The Plane Point defines the orientation of the xy-plane by fixing the orientation around the x-axis
• The y-axis points from the Plane Point into the direction of the x-axis
• The z-direction is either to the observer or away from the observer, respectively, depending from orientation of the other axis

In addition, the Sample Mode requires the input of the point distance between the First and the Second Point. According to the setup of the three points, four scenarios of co-ordinate system are possible.