| Associate sites:
Cheap domains registration
Cheap domain registration or
domain transfer |
IPO Curves and IPO Keys
The easiest way to work with motion curves is to convert them to
IPOKeys. We return to the situation in the previous example: we have
specified two positions in an object IPO in frame 1 and frame 31 with
"Insert Key". At the right of the screen, you can see an IPOWindow. We
set the current frame to 21 (Figure 5).
Press KKEY while the mouse cursor is in the 3DWindow. Two things
will happen now:
The two actions each have separate meanings.
The IPOWindow now draws vertical lines through all the vertices
of all the visible IPOCurves (IPOS are now black). Vertices with the same 'frame' value are
linked to the vertical lines. The vertical lines (the "IPOKeys") can
be selected, moved or duplicated, just like the vertices in
EditMode. You can translate the IPOKeys only horizontally.
The object is not
only shown in its current position but 'ghost' objects are
also shown at all the Key positions.
In addition to now being able to visualize the key positions of the
object, you can also modify them in the 3DWindow. In this example,
use the Grab mode on the object to change the selected IPOKeys.
Below are a number of instructions for utilizing the power of the
system:
You can only use the RMB to select IPOKeys in the
IPOWindow. Border select, and extend select, are also enabled
here. Select all IPOKeys to transform the complete animation system in
the 3DWindow.
The "Insert Key" always affects all selected objects. The
IPOKeys for multiple objects can also be transformed simultaneously in
the 3DWindow. Use the SHIFT-K command:
Show and select all keys to
transform complete animations of a group of objects all at once.
Use the PAGEUP and PAGEDOWN commands to select
subsequent keys in the 3DWindow.
You can create IPOKeys with each arrangement of channels. By
consciously excluding certain channels, you can force a situation in
which changes to key positions in the 3DWindow can only be made to the
values specified by the visible channels. For example, with only the
channel LocX selected, the keys can only be moved in the X
direction.
Each IPOKey consists of the vertices that have exactly the same
frame value. If vertices are moved manually, this can result in large
numbers of keys, each having only one curve. In this case, use
the JKEY ("Join") command to combine selected IPOKeys. It is also
possible to assign selected IPOKeys vertices for all the visible
curves: use IKEY in the IPOWindow and choose "Selected keys".
The DrawKey option and the IPOKey mode can be switched on and off
independently. Use the button EditButtons->DrawKey to switch off this
option or object. You can switch IPOKey mode on and off yourself with
KKEY in the IPOWindow. Only KKEY
in the 3DWindow turns on/off both
the DrawKey and IPOKey mode.
|
