Look From

View the Scene from a Specified Point

Use the Look From option to select the point from which to view the data. Once selected, you can rotate (using rotate ortho) the data, while maintaining your viewing position. This is equivalent to placing the camera at the centre of the rotation and entering normal rotate mode.

The Perspective factor at near plane value, which specified through the Graphics : Effects section of the Tools > Preferences option), is set by default to '0.01'. This setting minimises the effects of distortion on objects when they are close to triangle facets. However, this setting may not be suitable in this mode. A more suitable setting in this case would be '0.001'. In general you should try settings between the '0.01' and '0.001'.

Instructions

On the View menu, point to Change View, and then click Look From.

Select position from which to look. When selecting the position, you can use Snap to Objects or Snap to Points mode to 'snap' onto a specific point in an object, or you can use Indicate mode to pick any position at the current Z value. See the Digitise toolbar for details on these modes.

When the point is selected, you are then placed in the rotate ortho mode.

The data in view can be interactively rotated by moving the cursor around the X displayed in the middle of the screen. Selecting to go left rotates about the X axis, and if you go clockwise around the X marker the object is rotated clockwise around the X axis.

Use the Esc key to exit the option.