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!viewpoint

viewpoint: Specifies the viewpoint position by coordinates.

Default
x = (xmin + xmax)/2.0,
y = ymin + 1.5 *(ymax – ymin),
z = zmin + 1.5 *(zmax – zmin)

look_at_point: Specifies the look-at position.

(Default: center of the data)

up_direction: The view frame is specified by Viewpoint, look_at_point, and up_direction.
              default : 0.0 0.0 1.0

View coordinate frame:
              Origin    : look_at_point
              z-axis     : viewpoint - look_at_point
              x-axis     : up × z axis
              y-axis     : z axis × x axis

Method for determining the view frame

Figure 7.4.11 Method for determining the view frame

Example settings for !viewpoint, !look_at_point, and up_direction

Figure 7.4.12 Example settings for !viewpoint, !look_at_point, and up_direction