njLookAtView | Japanese
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Changes the view direction towards point (x, y, z).

### FORMAT

      #include <Ninja.h>

      void njLookAtView( *v,  x,  y,  z)
      NJS_VIEW *v
      Float x
      Float y
      Float z

### PARAMETERS

*v
  view structure pointer
x
  X coordinate of point toward which view is being directed
y
  Y coordinate of point toward which view is being directed
z
  Z coordinate of point toward which view is being directed

### RETURN VALUE

  None

### FUNCTION

  Changes the view direction towards a point (x, y, z).

### EXAMPLE

  The following changes the direction of the view located at (500, 500, 500) and directed toward (0, 0, -1) (to rear of screen) toward the origin (0, 0, 0).

      #define VIEW_PX 500.f
      #define VIEW_PY 500.f
      #define VIEW_PZ 500.f
      #define VIEW_VX 0.f
      #define VIEW_VY 0.f
      #define VIEW_VZ -1.f
      #define VIEW_ROLL 0

      NJS_VIEW v;

      v.px = VIEW_PX;
      v.py = VIEW_PY;
      v.pz = VIEW_PZ;
      v.vx = VIEW_VX;
      v.vy = VIEW_VY;
      v.vz = VIEW_VZ;
      v.roll = NJM_DEG_ANG(VIEW_ROLL);

      njLookAtView(&v, 0.f, 0.f, 0.f);
      njSetView(&v);
      njClearMatrix();

### NOTES

  When parameter v is NULL, the current view is changed.

### RELATED TOPICS

  njInitView()
  njSetView()
  njClearMatrix()

njLookAtView |
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