njGetPlaneNormal | Japanese
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Finds the vector that is normal to a plane.

### FORMAT

      #include <Ninja.h>
      void njGetPlaneNormal(*p, *v)
      NJS_POINT3 *p
      NJS_VECTOR *v

### PARAMETERS

NJS_POINT3 *p
  data array describing three points in the plane
NJS_VECTOR *v
  normal vector to the plane

### RETURN VALUE

  None

### FUNCTION

- Finds the vector that is normal to a plane.

### EXAMPLE

  The following finds the vector that is normal to the plane passing through points (1, 2, 3), (1, -1, 2), and (2, 3, 1).

      NJS_POINT3 p[3];
      NJS_VECTOR v;

      p[0].x = 1.f;
      p[0].y = 2.f;
      p[0].z = 3.f;
      p[1].x = 1.f;
      p[1].y = -1,f;
      p[1].z = 2.f;
      p[2].x = 2.f;
      p[2].y = 3.f;
      p[2].z = 1.f;

      njGetPlaneNormal(p, &v);

      % Result %
      v (7, -1, 3)

### NOTES

### RELATED TOPICS

  NJS_POINT3
  NJS_VECTOR

njGetPlaneNormal |
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