keyTimes

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The keyTimes attribute is a semicolon-separated list of time values used to control the pacing of the animation. Each time in the list corresponds to a value in the values attribute list, and defines when the value is used in the animation. Each time value in the keyTimes list is specified as a floating point value between 0 and 1 (inclusive), representing a proportional offset into the duration of the animation element.

If a list of keyTimes is specified, there must be exactly as many values in the keyTimes list as in the values list.

Each successive time value must be greater than or equal to the preceding time value.

The keyTimes list semantics depends upon the interpolation mode:

  • For linear and spline animation, the first time value in the list must be 0, and the last time value in the list must be 1. The key time associated with each value defines when the value is set; values are interpolated between the key times.
  • For discrete animation, the first time value in the list must be 0. The time associated with each value defines when the value is set; the animation function uses that value until the next time defined in keyTimes.

If the interpolation mode is paced, the keyTimes attribute is ignored.

If the duration is indefinite, any keyTimes specification will be ignored.

Usage context

Categories Animation value attribute
Value <list>
Animatable No
Normative document SVG 1.1 (2nd Edition)

Example

Source code Output result
<?xml version="1.0"?>
<svg width="120" height="120" 
     viewPort="0 0 120 120" version="1.1"
     xmlns="http://www.w3.org/2000/svg">
	
    <circle cx="60" cy="10" r="10">

        <animate attributeName="cx"
                 attributeType="XML"
                 dur="4s"
                 values="60 ; 110 ; 60 ; 10 ; 60"
                 keyTimes="0 ; 0.25 ; 0.5 ; 0.75 ; 1"
                 repeatCount="indefinite"/>

        <animate attributeName="cy"
                 attributeType="XML"
                 dur="4s"
                 values="10 ; 60 ; 110 ; 60 ; 10 "
                 keyTimes="0 ; 0.25 ; 0.5 ; 0.75 ; 1"
                 repeatCount="indefinite"/>

	</circle>
</svg>

» keyTime.svg

Elements

The following elements can use the keyTimes attribute

Attachments

File Size Date Attached by
keyTime.svg
711 bytes 2011-10-19 17:26:49 Jeremie

Document Tags and Contributors

Contributors to this page: Jeremie
Last updated by: Jeremie,