[WML-Source: IPOWindow.wml][TOC][Part00]


[section]The IpoWindow




[point]WindowType (IconMenu)

As with every window header, the first button enables you to set the window type. Full Window (IconTog) Maximise the window or return it to the previous window display size; return to the old screen setting. HotKey: (ALT-)CTRL+UPARROW

[point]Home (IconBut)

All visible curves are displayed completely, centered in the window. HotKey: HOMEKEY .

[point]IpoKeys (IconTog)


This is a drawing mode for the animation curves in the IpoWindow (the IpoCurves). Yellow vertical lines are drawn through all the vertices of the curves. Vertices of different curves at the same location in 'time' are joined together and can easily be selected, moved, copied or deleted. This method adds the ease of traditional key framing to the animation curve system. For Object-Ipos, these IpoKeys can also be drawn and transformed in the 3DWindow. Changes in the 3D position are processed in the IpoCurves immediately. #->$11

[point]Ipo Type


Depending on the active Object, the various Ipo systems can be specified with these buttons.

[point]Object Ipo (IconRow)

Settings, such as the location and rotation, are animated for the active Object. All Objects in Blender can have this Ipo block.

[point]Material Ipo (IconRow)

Settings of the active Material are animated for the active Object. A NumBut is added as an extra feature. This button indicates the number of the active Texture channel. Eight Textures, each with its own mapping, can be assigned per Material. Thus, per Material-Ipo, 8 curves in the row "OfsX, OfsY, ...Var" are available.

[point]Speed Ipo (Icon Row)

If the active Object is a path Curve, this button can be used to display the speed-Ipo.

[point]Lamp Ipo (IconRow)

If the active Object is a Lamp, this button can be used to animate light settings.

[point]World Ipo (IconRow)

Used to animate a number of settings for the WorldButtons.

[point]VertexKey Ipo (IconRow)

If the active Object has a VertexKey, the keys are drawn as horizontal lines. Only one IpoCurve is available to interpolate between the Keys.

[point]Sequence Ipo (IconRow)

The active Sequence Effect can have an IpoCurve.


The DataButtons can be used to control the Ipo blocks themselves.

[point]Ipo Browse (MenuBut)

Choose another Ipo from the list of available Ipos. The option "Add New" makes a complete copy of the current Ipo. This is not visible; only the name in the adjacent button will change. Only Ipos of the same type are displayed in the menu list.

[point]IP: (TextBut)

Give the current Ipo a new and unique name. After the new name is entered, it appears in the list, sorted alphabetically.

[point]Users (NumBut)

If this button is displayed, there is more than one user for the Ipo block. Use the button to make the Ipo "Single User".

[point]Unlink Ipo (IconBut)

The current Ipo is unlinked.


[point]Copy to Buffer (IconBut)

All selected IpoCurves are copied to a temporary buffer.

[point]Paste from Buffer (IconBut)

All selected channels in the IpoWindow are assigned an IpoCurve from the temporary buffer. The rule is: the sequence in which they are copied to the buffer is the sequence in which they are pasted. A check is made to see if the number of IpoCurves is the same.


[point]Extend mode Constant (IconBut)

The end of selected IpoCurves are horizontally extrapolated.

[point]Extend mode Direction (IconBut)

The ends of selected IpoCurves continue extending in the direction in which they end.

[point]Extend mode Cyclic (IconBut)

The full length of the IpoCurve is repeated cyclically.

[point]Extend mode Cyclic Extrapolation(IconBut)

The full length of the IpoCurve is extrapolated cyclic.


[point]View Zoom (IconBut, click-hold)

Move the mouse horizontally or vertically to zoom in or out on the IpoWindow. This is an alternative for CTRL+MiddleMouse.

[point]View Border (IconBut)

Draw a rectangle to indicate what part of the IpoWindow should be displayed in the full window.


[point]Lock (TogBut)

This buton locks the update of the 3DWindow while editing in the IpoWindow, so you can see changes maked to the Ipo in realtime inthe 3DWindow. This option works extremely well with relative vertex keys.



The IpoWindow shows the contents of the Ipo block. Which one depends on the Ipo Type specified in the header. The standard IpoWindow has a grid with the time expressed horizontally in frames and vertical values that depend on the channel. There are 2 sliders at the edge of the IpoWindow. How far the IpoWindow is zoomed in can be seen on the sliders, which can also be used to move the view. The right-hand part of the window shows the available channels.

To make it easier to work with rotation-IpoCurves, they are displayed in degrees (instead of in radials). The vertical scale relation is: 1.0 'Blender unit' = 10 degrees.

In addition to the IpoCurves, the VertexKeys are also drawn here. These are horizontal blue lines; the yellow line visualises the reference Key.


Each channel can be operated with two buttons:

[point]IpoCurve Select (TogBut)

This button is only displayed if the channel has an IpoCurve. The button is the same colour as the IpoCurve. Use the button to select IpoCurves. Multiple buttons can be (de)selected using SHIFT+LeftMouse.

[point]Channel Select (TogBut)

A channel can be selected whether there is an IpoCurve or not. Only IpoCurves of selected channels are drawn. Multiple channels can be (de)selected using SHIFT+LeftMouse.

[subsection]The Mouse

[point]LeftMouse (hold-draw)

These are the Gestures. Blender's gesture recognition works in two ways here:


Create a new vertex. These are the rules:

[point]MiddleMouse (hold-move)

Depending on the position within the window:

[point]CTRL+MiddleMouse (hold-move)

Zoom in/out on the IpoWindow. You can zoom horizonally or vertically using horizontal and vertical mouse movements.


Selection works the same here as in the 3DWindow: normally one item is selected. Use SHIFT to expand or reduce the selection (extend select).

[point]RightMouse (click-hold-move)

Select and start translation mode, i.e. the Grabber. The selection can be made using any of the four selection methods discussed above.


Extend the selection.

[subsection]The HotKeys


Zoom in, zoom out.


Select the next IpoKey. If more than one IpoKey is selected, the selection is shifted cyclically.


Extend select the next IpoKey.


Select the previous IpoKey. If more than one Object Key is selected, the selection is shifted cyclically.


Extend select the previous IpoKey.


All visible curves are displayed completely, centered in the window.


All selected IpoCurves go into or out of EditMode. This mode allows you to transform individual vertices.


Select All / deselect All. If any item is selected, first everything is deselected. Placing the mouse cursor above the channels, (de)selects all channels where there is a curve.


Border select. Draw a rectangle with the LeftMouse; all items that fall within this rectangle are selected. Draw a rectangle with the RightMouse to deselect.


If one vertex or one IpoKey is selected, the current frame number is set to this position.


Duplicate Ipo. All selected vertices or IpoKeys are copied. Then translation mode is started automatically.


Translation mode (the Grabber). This works on selected curves, keys or vertices.

Alternatives for starting this mode:

The following options are available in translation mode:


Toggle Handle align / free.


Set Handle auto. The selected Bezier handles are converted to auto type.


Insert Key. Vertices can be added to the visible curves in the IpoWindow. A PopupMenu asks you to make a choice:


Join vertices. Selected vertices or IpoKeys can be joined. A PopupMenu asks you to make a choice:


IpoKey mode ON/OFF. If the Ipo block is Object Ipo type, the Objects are redrawn with the option DrawKey ON (see the explanation under IpoHeader).


Recording mode. The X and Y movements of the mouse are linked to the height of the IpoCurve. Thus, this works with a maximum of two selected channels or IpoCurves. The old curve is completely deleted; the new one becomes a 'linear' type. You cannot change parts of curves with recording. The scale at which this happens is determined by the view of the IpoWindow.

A PopupMenu asks you to make a choice:

During recording mode, the SPACEKEY or ENTER or LeftMouse to stop recording. Use ESCKEY to undo changes.


Scaling mode. This works on selected IpoCurves and vertices. The degree of scaling is precisely linked to the mouse movement. Try to move from the (rotation) midpoint with the mouse. In IpoKey mode, you can only scale horizontally.

Alternatives for starting scaling mode:


Snap Menu.


If an IpoCurve is selected: "Ipo Type". The type of selected IpoCurves can be changed. A PopupMenu asks you to make a choice: If a Key is selected: "Key Type". The type of selected Keys can be changed.


Vector Handle. The selected Bezier handles are converted to vector type.


Erase selected. The selected vertices, IpoKeys or IpoCurves are deleted. If there are selected VertexKeys, they are also deleted.
-cw- Last modified: Tue Oct 24 13:54:37 CEST 2000