Key Frames
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## Key Frames

Relevant to Blender v2.31

Figure 14.1. Insert Key Menu.

The simplest method for creating an object IPO is with the "Insert key" (IKEY) command in the 3DWindow, with an Object selected. A Pop-up menu provides a wide selection of options (Figure 14.1, “Insert Key Menu.”). We will select the topmost option: `Loc`. Now the current location X-Y-Z, is saved and everything takes place automatically:

- If there is no IPO block, a new one is created and linked to the object.

- If there are no IPOCurves in the channels `LocX`, `LocY` and `LocZ`, these are created.

- Vertices are then added in the IPOCurves with the exact values of the object location.

We go 30 frames further on (3 x UPARROW) and move the object. Again we use IKEY. Now we can immediately press ENTER since Blender remembers our last choice and will highlight it. The new position is inserted in the IPO Curves. We can see this by slowly paging back through the frames (LEFTARROW). The object moves between the two positions.

In this way, you can create the animation by paging through the frames, position by position. Note that the location of the object is directly linked to the curves. When you change frames, the IPOs are always re-evaluated and re-applied. You can freely move the object within the same frame, but as soon as you change frame, the object 'jumps' to the position determined by the IPO.

The rotation and size of the object are completely free in this example. They can be changed or animated with the Insert key procedure by selecting from the IKEY menu the other options such as Rotation, Size and any combination of these.

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