Controls for Path View

The main mechanism for interactively creating paths is the use of picks, as described in Section 3.3. To create new paths, follow these steps:

1.

Turn on Path View (see first action listed in the above table).

2.

Make a pick anywhere in the cube using the current symbol, say ``x''.

3.

Make another pick using symbol ``x'' and observe the formation of a path joining the two picks.

4.

Make additional picks using symbol "x" or edit (move, delete, etc.) existing picks of type ``x'' to alter the ``x'' path.

5.

To start a new path, switch the pick symbol (see second action listed in Table 5.2) to something different, say ``y''.

Using different symbols, the user can create multiple paths through the cube. Additionally, the user has the option of using a pre-constructed path file to invoke Path View. This can be done at the command line by adding one parameter (``path''):

Ricksep < data.T [ other arguments ] path=pathFile.H

The path constructed from the file is associated with the pick symbol ``F'' (for file) and several representative ``F'' picks are made on the user's behalf. This path can thereafter be treated as if it was manually generated from ``F'' picks.

Once in Path View, the user can navigate across the volume as usual. To move along the current path itself, the user has available the controls listed in the table below.

  

Turn on/off Path View [menu] PathView > Path View On/Off [key] Shift + p

Select a different symbol [menu] Pick > Change Pick Properties [key] Right mouse + c

Jump to start of path [menu] PathView > Path Start

Jump to middle of path [menu] PathView > Path Middle

Jump to end of path [menu] PathView > Path End

Move forward along path [key] +

Move backward along path [key] -

Play movie along path in [menu] PathView > Animate Path

forward direction Forward

Play movie along path in [menu] PathView > Animate Path

backward direction Backward

Pause animation [menu] PathView > Pause Animation [key] Control + p