CSS - motion-path

Example

The following example is excerpted from a sample that may be viewed live on GitHub in a supporting browser. The SVG in the second code sample is a simple drawing of a house with a chimney. The motion-path properties in the first code sample move a pair of scissors along the outside border of the house. Notice the :path() pseudo class in the motion-path property and the <path> element in the SVG. If you compare them, you'll find they are identical.

CSS

Copy Code

#firstScissorHalf {
  motion-path: path('M900,190  L993,245 V201  A11,11 0 0,1 1004,190  H1075  A11,11 0 0,1 1086,201  V300  L1294,423 H1216  A11,11 0 0,0 1205,434  V789  A11,11 0 0,1 1194,800  H606  A11,11 0 0,1 595,789  V434  A11,11 0 0,0 584,423  H506 L900,190');
}

#secondScissorHalf {
  motion-path: path('M900,190  L993,245 V201  A11,11 0 0,1 1004,190  H1075  A11,11 0 0,1 1086,201  V300  L1294,423 H1216  A11,11 0 0,0 1205,434  V789  A11,11 0 0,1 1194,800  H606  A11,11 0 0,1 595,789  V434  A11,11 0 0,0 584,423  H506 L900,190');
}

XML

Copy Code

<svg xmlns="http://www.w3.org/2000/svg"
     width="700"
     height="450"
     viewBox="350 0 1400 900">
  <rect x="595"
        y="423"
        width="610"
        height="377"
        fill="blue" />
  <polygon points="506,423 900,190 1294,423"
           fill="yellow" />
  <polygon points="993,245 993,190 1086,190 1086,300"
           fill="red" />
  <path id="house" d="M900,190 L993,245 V201 A11,11 0 0,1 1004,190 H1075 A11,11 0 0,1 1086,201 V300 L1294,423 H1216 A11,11 0 0,0 1205,434 V789 A11,11 0 0,1 1194,800 H606 A11,11 0 0,1 595,789 V434 A11,11 0 0,0 584,423 H506 L900,190"
        fill="none"
        stroke="black"
        stroke-width="13"
        stroke-linejoin="round"
        stroke-linecap="round" />
  <path id="firstScissorHalf"
        d="M30,0 H-10 A10,10 0 0,0 -20,10 A20,20 0 1,1 -40,-10 H20 A10,10 0 0,1 30,0 M-40,20 A10,10 1 0,0 -40,0 A10,10 1 0,0 -40,20 M0,0"
        transform="translate(0,0)"
        fill="green"
        stroke="black"
        stroke-width="5"
        stroke-linejoin="round"
        stroke-linecap="round"
        fill-rule="evenodd" />
  <path id="secondScissorHalf"
        d="M30,0 H-10 A10,10 0 0,1 -20,-10 A20,20 0 1,0 -40,10 H20 A10,10 0 0,0 30,0 M-40,-20 A10,10 1 0,0 -40,0 A10,10 1 0,0 -40,-20 M0,0"
        transform="translate(0,0)"
        fill="forestgreen"
        stroke="black"
        stroke-width="5"
        stroke-linejoin="round"
        stroke-linecap="round"
        fill-rule="evenodd" />
</svg>

Syntax

TBD

Formal syntax

CSS

Copy Code

<a href="css/url" title=""><url></a> <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> <a href="css/value_definition_syntax#brackets" title="Brackets">[</a> <a href="css/motion-path#basic-shape"><basic-shape></a> <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> <path()> <a href="css/value_definition_syntax#brackets" title="Brackets">]</a> <a href="css/value_definition_syntax#double_bar" title="Double bar">||</a> <a href="css/motion-path#geometry-box"><geometry-box></a> <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> none<p>where <br><code><basic-shape> = <a href="css/motion-path#inset()"><inset()></a> <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> <a href="css/motion-path#circle()"><circle()></a> <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> <a href="css/motion-path#ellipse()"><ellipse()></a> <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> <a href="css/motion-path#polygon()"><polygon()></a><br><geometry-box> = <a href="css/motion-path#shape-box"><shape-box></a> <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> fill-box <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> stroke-box <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> view-box</code></p><p>where <br><code><inset()> = inset( <a href="css/motion-path#length-percentage"><length-percentage></a><a href="css/value_definition_syntax#curly_braces_(.7b_.7d)" title="Curly braces">{</a>1,4<a href="css/value_definition_syntax#curly_braces_(.7b_.7d)" title="Curly braces">}</a> <a href="css/value_definition_syntax#brackets" title="Brackets">[</a> round <border-radius> <a href="css/value_definition_syntax#brackets" title="Brackets">]</a><a href="css/value_definition_syntax#question_mark_(.3f)" title="Question mark">?</a> )<br><circle()> = circle( <a href="css/value_definition_syntax#brackets" title="Brackets">[</a> <a href="css/motion-path#shape-radius"><shape-radius></a> <a href="css/value_definition_syntax#brackets" title="Brackets">]</a><a href="css/value_definition_syntax#question_mark_(.3f)" title="Question mark">?</a> <a href="css/value_definition_syntax#brackets" title="Brackets">[</a> at <a href="css/position_value" title=""><position></a> <a href="css/value_definition_syntax#brackets" title="Brackets">]</a><a href="css/value_definition_syntax#question_mark_(.3f)" title="Question mark">?</a> )<br><ellipse()> = ellipse( <a href="css/value_definition_syntax#brackets" title="Brackets">[</a> <a href="css/motion-path#shape-radius"><shape-radius></a><a href="css/value_definition_syntax#curly_braces_(.7b_.7d)" title="Curly braces">{</a>2<a href="css/value_definition_syntax#curly_braces_(.7b_.7d)" title="Curly braces">}</a> <a href="css/value_definition_syntax#brackets" title="Brackets">]</a><a href="css/value_definition_syntax#question_mark_(.3f)" title="Question mark">?</a> <a href="css/value_definition_syntax#brackets" title="Brackets">[</a> at <a href="css/position_value" title=""><position></a> <a href="css/value_definition_syntax#brackets" title="Brackets">]</a><a href="css/value_definition_syntax#question_mark_(.3f)" title="Question mark">?</a> )<br><polygon()> = polygon( <a href="css/motion-path#fill-rule"><fill-rule></a><a href="css/value_definition_syntax#question_mark_(.3f)" title="Question mark">?</a> , <a href="css/value_definition_syntax#brackets" title="Brackets">[</a> <a href="css/motion-path#length-percentage"><length-percentage></a> <a href="css/motion-path#length-percentage"><length-percentage></a> <a href="css/value_definition_syntax#brackets" title="Brackets">]</a><a href="css/value_definition_syntax#hash_mark_(.23)" title="Hash mark">#</a> )<br><shape-box> = <a href="css/motion-path#box"><box></a> <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> margin-box</code></p><p>where <br><code><length-percentage> = <a href="css/length" title="Possible values: a number followed by'em', 'ex', 'ch', 'rem', 'px', 'cm', 'mm', 'in', 'vh', 'vw', 'vmin', 'vmax', 'pt', 'pc' or 'px', like 3px, 1.5cm, -0.5em or 0"><length></a> <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> <a href="css/percentage" title=""><percentage></a><br><shape-radius> = <a href="css/motion-path#length-percentage"><length-percentage></a> <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> closest-side <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> farthest-side<br><position> = <a href="css/value_definition_syntax#brackets" title="Brackets">[</a><a href="css/value_definition_syntax#brackets" title="Brackets">[</a> left <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> center <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> right <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> top <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> bottom <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> <a href="css/percentage" title=""><percentage></a> <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> <a href="css/length" title="Possible values: a number followed by'em', 'ex', 'ch', 'rem', 'px', 'cm', 'mm', 'in', 'vh', 'vw', 'vmin', 'vmax', 'pt', 'pc' or 'px', like 3px, 1.5cm, -0.5em or 0"><length></a> <a href="css/value_definition_syntax#brackets" title="Brackets">]</a> <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> <a href="css/value_definition_syntax#brackets" title="Brackets">[</a> left <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> center <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> right <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> <a href="css/percentage" title=""><percentage></a> <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> <a href="css/length" title="Possible values: a number followed by'em', 'ex', 'ch', 'rem', 'px', 'cm', 'mm', 'in', 'vh', 'vw', 'vmin', 'vmax', 'pt', 'pc' or 'px', like 3px, 1.5cm, -0.5em or 0"><length></a> <a href="css/value_definition_syntax#brackets" title="Brackets">]</a> <a href="css/value_definition_syntax#brackets" title="Brackets">[</a> top <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> center <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> bottom <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> <a href="css/percentage" title=""><percentage></a> <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> <a href="css/length" title="Possible values: a number followed by'em', 'ex', 'ch', 'rem', 'px', 'cm', 'mm', 'in', 'vh', 'vw', 'vmin', 'vmax', 'pt', 'pc' or 'px', like 3px, 1.5cm, -0.5em or 0"><length></a> <a href="css/value_definition_syntax#brackets" title="Brackets">]</a> <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a>  <a href="css/value_definition_syntax#brackets" title="Brackets">[</a> center <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> <a href="css/value_definition_syntax#brackets" title="Brackets">[</a> left <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> right <a href="css/value_definition_syntax#brackets" title="Brackets">]</a> <a href="css/value_definition_syntax#brackets" title="Brackets">[</a> <a href="css/percentage" title=""><percentage></a> <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> <a href="css/length" title="Possible values: a number followed by'em', 'ex', 'ch', 'rem', 'px', 'cm', 'mm', 'in', 'vh', 'vw', 'vmin', 'vmax', 'pt', 'pc' or 'px', like 3px, 1.5cm, -0.5em or 0"><length></a> <a href="css/value_definition_syntax#brackets" title="Brackets">]</a><a href="css/value_definition_syntax#question_mark_(.3f)" title="Question mark">?</a> <a href="css/value_definition_syntax#brackets" title="Brackets">]</a> && <a href="css/value_definition_syntax#brackets" title="Brackets">[</a> center <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> <a href="css/value_definition_syntax#brackets" title="Brackets">[</a> top <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> bottom <a href="css/value_definition_syntax#brackets" title="Brackets">]</a> <a href="css/value_definition_syntax#brackets" title="Brackets">[</a> <a href="css/percentage" title=""><percentage></a> <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> <a href="css/length" title="Possible values: a number followed by'em', 'ex', 'ch', 'rem', 'px', 'cm', 'mm', 'in', 'vh', 'vw', 'vmin', 'vmax', 'pt', 'pc' or 'px', like 3px, 1.5cm, -0.5em or 0"><length></a> <a href="css/value_definition_syntax#brackets" title="Brackets">]</a><a href="css/value_definition_syntax#question_mark_(.3f)" title="Question mark">?</a> <a href="css/value_definition_syntax#brackets" title="Brackets">]</a><a href="css/value_definition_syntax#brackets" title="Brackets">]</a><br><fill-rule> = nonzero <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> evenodd<br><box> = border-box <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> padding-box <a href="css/value_definition_syntax#single_bar" title="Single bar">|</a> content-box</code></p>

Description

This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The motion-path CSS property specifies the motion path where the element gets positioned. The exact element’s position on the motion path is determined by the motion-offset property. A motion path is either a specified path with one or multiple sub-paths or the geometry of a not styled basic shape. Each shape or path must define an initial position for the computed value of "0" for motion-offset and an initial direction which specifies the rotation of the object to the initial position.

In this specification, a direction (or rotation) of 0 degrees is equivalent to the direction of the positive x-axis in the object’s local coordinate system. In other words, a rotation of 0 degree points to the right side of the UA if the object and its ancestors have no transformation applied.

Initial value	`none`
Applies to	all elements; In SVG, it applies to container elements excluding the `<defs>` element and all graphics elements
Inherited	no
Media	visual
Computed value	as specified
Animatable	no
Canonical order	the unique non-ambiguous order defined by the formal grammar
Creates stacking context	yes

Feature	Chrome	Firefox (Gecko)	Internet Explorer	Opera	Safari (WebKit)
Basic support	46.0	No support	No support	No support	No support

Feature	Android	Android Webview	Firefox Mobile (Gecko)	Firefox OS	IE Mobile	Opera Mobile	Safari Mobile	Chrome for Android
Basic support	No support	46.0	No support	No support	No support	No support	No support	46.0

Specifications

Specification	Status	Comment
Motion Path Module Level 1 The definition of 'motion-path' in that specification.	Working Draft	Initial definition

License

© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/css/motion-path

CSS