Size3DKeyFrame

Size3DKeyFrame

Hierarchy: DependencyObject Freezable

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Size3DPointFrame is the base class for three types of Size3D key frames: discrete, linear, and spline. Each of the three subclasses of Size3DKeyFrame represents a key frame with a distinct interpolation technique, indicated by its name:

     <LinearSize3DKeyFrame             KeyTime="0:0:10|Uniform|Paced|30%"             Value="1 1 1" />     <DiscreteSize3DKeyFrame             KeyTime="0:0:10|Uniform|Paced|30%"             Value="1 1 1" />     <SplineSize3DKeyFrame             KeyTime="0:0:10|Uniform|Paced|30%"             Value="1 1 1" >             <SplineSize3DKeyFrame.KeySpline>                 <KeySpline ControlPoint1="5,5" ControlPoint2="10,10" />             </SplineSize3DKeyFrame.KeySpline>     </SplineSize3DKeyFrame> 

All three Size3DKeyFrame subclasses determine when (KeyTime) the frame will reach the designated value (Value). KeyTime is specified in terms of hours:minutes:seconds. The Value attribute of all Size3DKeyFrame subclasses is a Size3D.

DiscreteSize3DKeyFrame

Skips from one value to the desired value without interpolation. Thus, the Value will not be reached until KeyTime (relative to the beginning of the animation).

LinearSize3DKeyFrame

Utilizes linear interpolation to reach the desired value. Linear interpolation progresses the animation at a steady rate for its duration.

SplineSize3DKeyFrame

Uses a concept similar to Bezier curves to interpolate values until Value has been reached. This subclass requires an additional attribute, KeySpline, which is used to interpolate the value in much the same way as control points are used to interpolate a line when declaring a Bezier curve.

The Size3Dvalue may be specified using abbreviated markup syntax or explicitly declared as a Size3D element.

Attributes

KeySpline (required) (SplineSize3DKeyFrame only)

This KeySpline describes how the key frame will be altered during animation.

KeyTime (required)

This attribute specifies when, relative to the animation, this key frame takes place:

• A time period specified in hours:minutes:seconds.

• Uniform: The Duration will be split evenly among all key frames.

• Paced: The Duration will be split among key frames in a way that ensures the speed of the animation remains relatively constant.

• A percentage of the total duration.

Value (required)

This Size3D describes the destination value of the key frame.