Onion skin

(Updated 05/13/2021)

The states before and after keyframes and keyforms are displayed, allowing the transition of movement to be checked.
In addition, the Modeling View allows visualization of parameter trajectories with lines, facilitating adjustments such as extended interpolation.


Onion Skin Activation

The onion skin can be activated by a button added to the bottom of the view area.
The ON/OFF status is linked to the open view ([Modeling], [Animation], [Form Animation]).

Click the adjacent ▼ button to toggle the onion skin on or off for each view.
The Onion Skin Settings dialog can also be launched from here.

 

 

Onion Skin Settings Dialog

Click on [Show] menu -> [Onion skin] -> [Onion skin setting].

Modeling View Display Settings

The modeling view allows the following settings.

Image / Orbit display of selected vertex

[PRO Version Exclusive Features]

Toggles the orbit display on or off.
You can toggle the display of the image (the displayed texture) and the trajectory of the vertices of the object currently selected, respectively.

The orbit of a vertex is the control point of the currently selected vertex and deformation path.

Color and transparency settings

Onion skin color and transparency settings are also available in the modeling view.

Onion skin layer in front

When checked, the onion skin layer is always displayed in front of the other parts, and when unchecked, the onion skin layer is displayed in its original drawing order.

 

About coupling parameters

The onion skin of the combined parameters is not displayed.
Accordingly, when the onion skin in the Modeling View is activated for the first time, the following hint dialog will appear.

 

 

Onion Skin Marker

Onion skin markers are special markers that are placed at any frame position on the timeline palette to set the display position of the onion skin.

Clicking the newly added button/buttons in the left pane of the timeline palette toggles between the marker and onion skin marker functions.
* This function is exclusive of the marker function. 

Onion skin markers in effect:

Marker is active:

 

Onion skin markers can be added/removed by right-clicking at the top of the timeline while onion skin markers are enabled.

 

Onion skin markers can be moved by mouse dragging.

 

Once an onion skin marker is locked, it cannot be added, deleted, or moved. This helps prevent accidental operation such as when dragging the indicator bar.

 

You can skip the indicator bar to the previous onion skin marker by pressing [Ctrl] + [Shift] + [J] and to the next onion skin marker by pressing [Ctrl] + [Shift] + [K].

 

Onion skin marker information and lock settings are retained for each scene and written to the .can3 file when saved.

 

Visualize the display range of the onion skin on the timeline

A red bar has been added to indicate the range of frames in which the onion skin will be displayed.

The length of the onion skin display range bar is linked to the display range of the frame to be displayed (see below) and the previous and next frames in the onion skin settings.

 

The frame to be displayed is indicated by a white line in the bar.

Whole frame

Key frame

Onion Skin Marker

 

Drag the start/end position handles to adjust the display range of the previous/next frame.
Values in the Onion Skin Settings dialog are also synchronized.

 

 

Animation View Display Settings

The following settings are available in the animation view.

Display during playback:
Onion skin display can be toggled on and off during animation playback.
The onion skin function itself is effective when you want to reduce the drawing load during playback while keeping it turned on.

Onion skin layer in the foreground:
When checked, tracks in the onion skin are always displayed in front of other tracks; when unchecked, tracks are displayed in their original drawing order.

Displayed in:
You can select the target frame for displaying the onion skin.
Selecting all frames makes all drawing frames visible in the onion skin, regardless of the key being struck on the track.
When all frames are selected, the number of onion skins actually displayed can be thinned out by setting the frame display interval.

For example, if the display range of the previous frame is “10” and the frame spacing is “5,” then 5 frame spacing, or two onion skins, will be displayed within 10 frames of the indicator's position.
This is useful for animations with a large number of frames, for example, when it is difficult to see the changes before and after in the onion skin for each frame.

Selecting only keyframes makes the keyframes of the currently selected track the target of the onion skin display.
The onion skin will not be displayed on tracks where no keyframes have been hit.

When an onion skin marker is selected, the frame corresponding to the position of the onion skin marker set on the timeline palette is targeted for display.

 

Uncertainty downside

The opacity of the onion skin frame can be set to decay as you move away from the current position. The attenuation level can be set in 10 steps.
This setting is only affected from the second frame onward and does not affect the opacity of the first frame.

It can be set for each of the front and rear frames.
No attenuation at level 0 and completely transparent except for one frame at level 10.

Opacity reduction 0 (no attenuation)

Opacity reduction 5 (3rd frame onwards becomes transparent)

Opacity reduction 10 (displayed only in the first frame)

 

 

Offset

The drawing position of the onion skin can be shifted in the X and Y directions.
Utilize this function when you want to check the previous and next frames on a track that moves few coordinates.

 

 

Form animation view display settings

The following settings are available in the form animation view.
* Both are almost the same function as the setting of the same name added to the Animation View.

Display during playback:
Turn on/off the onion skin display during animation playback. The onion skin function itself is effective when you want to reduce the drawing load during playback while keeping it turned on.

Onion skin layer in the foreground:
When checked, the onion skin layer is always displayed in front of the other parts, and when unchecked, the onion skin layer is displayed in its original drawing order.

Offset:
The drawing position of the onion skin can be shifted in the X and Y directions. Use this function when you want to check the previous and next frames in a model with few coordinate shifts.

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