# Synopsis

PDX_MSGT mth_GetRotMatrixFromPnts(long npnts, MTH_3DPNT (*pnts), double *matrix)

# Purpose

Get the 3X3 rotation matrix defined by the plane of the points

# Description

Using the first three non-coincident, non-colinear points determines the corresponding 3X3 rotation matrix that rotates the points to the XY plane.

# Input

## npnts

The number of points in the pnts array

## pnts

The XYZ 3D points array

# Output

## matrix

The 3X3 rotation matrix.

# Return

          MTH_NOERR
          MTH_COLINEARPLANEPNTS
          .fi