Local Space Rectangular
// Specification of Object Reference Model (ORM)
SRM_DIRECTION_OF_UP_ENUM up_direction
SRM_DIRECTION_OF_FORWARD_ENUM forward_direction
// Specification of Projection Basis
// Origin of Coordinate System
// Origin Displacement of Coordinate System
SRM_Direction_Of_Up_Positive_Primary_Axis
SRM_Direction_Of_Up_Positive_Secondary_Axis
SRM_Direction_Of_Up_Positive_Tertiary_Axis
SRM_Direction_Of_Up_Negative_Primary_Axis
SRM_Direction_Of_Up_Negative_Secondary_Axis
SRM_Direction_Of_Up_Negative_Tertiary_Axis
SRM_FLOAT64 x // meters, unless used in unitless Model
SRM_FLOAT64 y // meters, unless used in unitless Model
SRM_FLOAT64 z // Elevation or height, unless used in unitless Model
// positive along XY surface normal