CSS Motion Path Sample

Available in Chrome 46+ | View on GitHub | Browse Samples

Background

CSS Motion Paths allow web pages to animate graphical objects along paths, specified using CSS.

It introduces the following new CSS properties: motion-offset, motion-path, and motion-rotation.

HTML Snippet

<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 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>

CSS Snippet

#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');
}

JavaScript Snippet

var firstScissorHalf = document.querySelector('#firstScissorHalf');
var secondScissorHalf = document.querySelector('#secondScissorHalf');

var positionKeyframes = [{motionOffset: '0%'}, {motionOffset: '100%'}];
var positionTiming = {duration: 12000, iterations: Infinity};
firstScissorHalf.animate(positionKeyframes, positionTiming);
secondScissorHalf.animate(positionKeyframes, positionTiming);

var firstRotationKeyframes = [
{motionRotation: 'auto 0deg'},
{motionRotation: 'auto -45deg'},
{motionRotation: 'auto 0deg'}
];
var secondRotationKeyframes = [
{motionRotation: 'auto 0deg'},
{motionRotation: 'auto 45deg'},
{motionRotation: 'auto 0deg'}
];
var rotationTiming = {duration: 1000, iterations: Infinity};
firstScissorHalf.animate(firstRotationKeyframes, rotationTiming);
secondScissorHalf.animate(secondRotationKeyframes, rotationTiming);