2013

1 unit by 1 unit area, with its origin at the lower-left corner. The following
illustration shows an example of using the default DVIEWBLOCK to set the
view (moving the graphics cursor adjusts the view).
Point Specification
Rolls the view under the camera. The point you select with your pointing
device is a start point for the dragging operation. Your viewing direction
changes about the target point as you move the pointing device.
The angles must be positive. The direction angle indicates the front of the
view, and the magnitude angle determines how far the view rolls.
Camera
Specifies a new camera position by rotating the camera about the target point.
Two angles determine the amount of rotation.
Camera Location Sets the camera's position based on the specified point.
Enter Angle from the XY Plane Sets the camera's position at an angle above
or below the XY plane. An angle of 90 degrees looks down from above, and
an angle of -90 looks up from below. A camera angle of 0 degrees places the
camera parallel to the XY plane of the user coordinate system (UCS).
Toggle (Angle In) Switches between two angle input modes. Entering an angle
at the Command prompt locks the cursor movement so you see only the
positions available for that angle. Toggle unlocks the cursor movement for
the angle, and you can use the cursor to rotate the camera.
390 | Chapter 2 Commands