<h2>Hover the shape to see the border-only version</h2>
<div style="width:150px;height:100px;--path:0 0,50% 40%,100% 0,100% 100%,50% 60%,0 100%;--radius:40px;"></div>
<div style="width:150px;height:100px;--path:0 50%,33% 0,66% 50%,100% 0,100% 50%,66% 100%,33% 50%,0 100%;--radius:10px;"></div>
<div style="width:150px;height:100px;--path:50% 0,100% 50% 0,50% 100%,0 50% 0;--radius:60px;"></div>
<div style="width:100px;height:100px;--path:25% 0,50% 25% 0,75% 0,100% 33%,50% 100% 0,0 33%;--radius:60px;"></div>
<div style="width:100px;height:100px;--path:0 0 0,50% 40%,100% 0 0,100% 100% 0,50% 60%,0 100% 0;--radius:100px;"></div>
<div style="width:100px;height:100px;--path:20% 0%, 0% 20%, 30% 50%, 0% 80%, 20% 100%, 50% 70%, 80% 100%, 100% 80%, 70% 50%, 100% 20%, 80% 0%, 50% 30%;--radius:100px;"></div>
<div style="width:100px;height:100px;--path:20% 0%, 0% 20%, 30% 50% 0, 0% 80%, 20% 100%, 50% 70% 0, 80% 100%, 100% 80%, 70% 50% 0, 100% 20%, 80% 0%, 50% 30% 0;--radius:100px;"></div>
<div style="width:100px;height:100px;--path:20% 0%, 0% 20%, 30% 50% 20px, 0% 80%, 20% 100%, 50% 70% 20px, 80% 100%, 100% 80%, 70% 50% 20px, 100% 20%, 80% 0%, 50% 30% 20px;--radius:0px;"></div>
<div style="width:100px;height:100px;--path:0 0,100% 0 0,20% 20%,0 100% 0;--radius:25px;"></div>
<div style="width:100px;height:100px;--path:50% -100% 0,50% 50%,200% 50% 0,50% 50%,50% 200% 0,50% 50%,-100% 50% 0,50% 50%;--radius:55px;"></div>
<div style="width:100px;height:100px;--path:30% 0,70% 0,70% 100%,150% 100% 0,-50% 100% 0,30% 100%;--radius:50px;"></div>
<div style="width:100px;height:100px;--path:0 0,30% 0,30% 70%,100% 70%,100% 100%,0 100%;--radius:100px;"></div>
<div style="width:100px;height:100px;--path:50% 0 0,100% 100%,0 100%;--radius:100px;"></div>
<div style="width:100px;height:100px;--path:0 0,33% 50% 100px,50% 0,66% 50% 100px,100% 0,80% 100%,20% 100% ;--radius:0;"></div>
<div style="width:150px;height:100px;--path:40% 0 0,50% 50%,60% 0 0,100% 100%,0 100%;--radius:100px;"></div>
<div style="width:150px;height:100px;--path:75% 0%, 100% 50%, 75% 100%, 0% 100%, 25% 50%, 0% 0%;--radius:10px;"></div>
<div style="width:150px;height:100px;--path:50% 0,100% 0,100% 50%,50% 50%,0 100% 0;--radius:50px;"></div>
<div style="width:150px;height:100px;--path:0 20%,50% 0,100% 20%,60% 50% 50px,100% 80%,50% 100%,0 80%,40% 50% 50px;--radius:0;"></div>
<div style="width:100px;height:100px;--path:50% 0%, 50% 50%, 100% 43%, 94% 78%, 68% 100%, 32% 100%, 6% 78%, 0% 43%, 17% 12%;--radius:100px;"></div>
<div style="width:100px;height:100px;--path:50% 0%, 37.64% 11.96%, 20.61% 9.55%, 17.64% 26.49%, 2.45% 34.55%, 10% 50%, 2.45% 65.45%, 17.64% 73.51%, 20.61% 90.45%, 37.64% 88.04%, 50% 100%, 62.36% 88.04%, 79.39% 90.45%, 82.36% 73.51%, 97.55% 65.45%, 90% 50%, 97.55% 34.55%, 82.36% 26.49%, 79.39% 9.55%, 62.36% 11.96%;--radius:100px;"></div>
<div style="width:80px;height:100px;--path:0 0,100% 0,100% 20%,25% 20%,25% 40%,100% 40%,100% 100%,0 100%,0 80%,75% 80%,75% 60%,0 60%;--radius:100px;"></div>
<div style="width:200px;height:100px;--path:30% 0 0,50% 35%,70% 0 0,100% 100% 0,80% 80%,70% 100% 0,50% 70%,30% 100% 0,20% 80%,0 100% 0;--radius:100px;"></div>
<div style="width:100px;height:100px;--path:50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%;--radius:10px;"></div>
<div style="width:100px;height:100px;--path:50% 50%, 83% 12%, 100% 43%, 50% 50%, 68% 100%, 32% 100%, 50% 50%, 0% 43%, 17% 12%;--radius:50px;"></div>
<script>
if (CSS.paintWorklet) { CSS.paintWorklet.addModule('/t_afif/pen/GREaoMJ.js');
} else {
alert("Your browser cannot run this demo. Consider Chrome or Edge instead")
}
</script>@property --radius{
syntax: '<length>';
inherits: true;
initial-value: 0;
}
@property --border{
syntax: '<length>';
inherits: true;
initial-value: 0;
}
div[style] {
display:inline-block;
cursor:pointer;
margin:10px;
--border:5px;
--t:0;
-webkit-mask:paint(rounded-shape);
position:relative;
}
div[style]:before {
content:"";
position:absolute;
inset:0;
background:#000;
--t:1;
}
div[style]:hover:before {
-webkit-mask:inherit;
}
body {
background:pink;
}registerPaint('rounded-shape', class {
static get inputProperties() {
return [
'--path',
'--radius',
'--border',
'--t',
'--dash'
]
}
paint(ctx, size, properties) {
const points = properties.get('--path').toString().split(',');
var Ppoints = [];
var Cpoints = [];
var Radius = [];
const r = parseFloat(properties.get('--radius').value);
const b = parseFloat(properties.get('--border').value);
const d = properties.get('--dash').toString().split(',');
const t = parseInt(properties.get('--t'));
const w = size.width;
const h = size.height;
const cc = function(x,y) {
var fx=0,fy=0;
if (x.indexOf('calc') > -1) {
var tmp = x.replace('calc(','').replace(')','');
if (tmp.indexOf('+') > -1) {
tmp = tmp.split('+');
fx = (parseFloat(tmp[0])/100)*w + parseFloat(tmp[1]);
} else {
tmp = tmp.split('-');
fx = (parseFloat(tmp[0])/100)*w - parseFloat(tmp[1]);
}
} else if (x.indexOf('%') > -1) {
fx = (parseFloat(x)/100)*w;
} else if(x.indexOf('px') > -1) {
fx = parseFloat(x);
}
if (y.indexOf('calc') > -1) {
var tmp = y.replace('calc(','').replace(')','');
if (tmp.indexOf('+') > -1) {
tmp = tmp.split('+');
fy = (parseFloat(tmp[0])/100)*h + parseFloat(tmp[1]);
} else {
tmp = tmp.split('-');
fy = (parseFloat(tmp[0])/100)*h - parseFloat(tmp[1]);
}
} else if (y.indexOf('%') > -1) {
fy = (parseFloat(y)/100)*h;
} else if(y.indexOf('px') > -1) {
fy = parseFloat(y);
}
return [fx,fy];
}
var N = points.length;
for (var i = 0; i < N; i++) {
var j = i-1;
if(j<0) j=N-1;
var p = points[i].trim().split(/(?!\(.*)\s(?![^(]*?\))/g);
if(p[2])
Radius.push(parseInt(p[2]));
else
Radius.push(r);
p = cc(p[0],p[1]);
Ppoints.push([p[0],p[1]]);
var pj = points[j].trim().split(/(?!\(.*)\s(?![^(]*?\))/g);
pj = cc(pj[0],pj[1]);
Cpoints.push([p[0]-((p[0]-pj[0])/2),p[1]-((p[1]-pj[1])/2)]);
}
ctx.beginPath();
ctx.moveTo(Cpoints[0][0],Cpoints[0][1]);
var i;
var rr;
for (i = 0; i < (Cpoints.length - 1); i++) {
var angle = Math.atan2(Cpoints[i+1][1] - Ppoints[i][1],
Cpoints[i+1][0] - Ppoints[i][0]) -
Math.atan2(Cpoints[i][1] - Ppoints[i][1],
Cpoints[i][0] - Ppoints[i][0]);
if (angle < 0) {
angle += (2*Math.PI)
}
if (angle > Math.PI) {
angle = 2*Math.PI - angle
}
var distance = Math.min(Math.sqrt((Cpoints[i+1][1] - Ppoints[i][1]) ** 2 +
(Cpoints[i+1][0] - Ppoints[i][0]) ** 2),
Math.sqrt((Cpoints[i][1] - Ppoints[i][1]) ** 2 +
(Cpoints[i][0] - Ppoints[i][0]) ** 2));
rr = Math.min(distance * Math.tan(angle/2),Radius[i]);
ctx.arcTo(Ppoints[i][0], Ppoints[i][1], Cpoints[i+1][0],Cpoints[i+1][1], rr);
}
var angle = Math.atan2(Cpoints[0][1] - Ppoints[i][1],
Cpoints[0][0] - Ppoints[i][0]) -
Math.atan2(Cpoints[i][1] - Ppoints[i][1],
Cpoints[i][0] - Ppoints[i][0]);
if (angle < 0) {
angle += (2*Math.PI)
}
if (angle > Math.PI) {
angle = 2*Math.PI - angle
}
var distance = Math.min(Math.sqrt((Cpoints[0][1] - Ppoints[i][1]) ** 2 +
(Cpoints[0][0] - Ppoints[i][0]) ** 2),
Math.sqrt((Cpoints[i][1] - Ppoints[i][1]) ** 2 +
(Cpoints[i][0] - Ppoints[i][0]) ** 2));
rr = Math.min(distance * Math.tan(angle/2),Radius[i]);
ctx.arcTo(Ppoints[i][0], Ppoints[i][1], Cpoints[0][0],Cpoints[0][1], rr);
ctx.closePath();
if(t==0) {
ctx.fillStyle = '#000';
ctx.fill();
} else {
ctx.setLineDash(d);
ctx.lineWidth = 2*b;
ctx.strokeStyle = '#000';
ctx.stroke();
}
}
})
External CSS
This Pen doesn't use any external CSS resources.
External JavaScript
This Pen doesn't use any external JavaScript resources.