shape-points
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Generate points for simple shapes and curves: arcs, rectangles, rounded rectangles, circles, ellipses, bezierCurveTo, bezierCurveThrough (i.e., bezier curves through specific points)
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<title>JSDoc: Source: roundedRect.js</title>
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<h1 class="page-title">Source: roundedRect.js</h1>
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<pre class="prettyprint source linenums"><code>import { arc } from './arc'
/**
* calculate points for a rounded rectangle with one corner radius, or 4 separate corner radii
* @module shape-points/roundedRect
* @param {number} x (center)
* @param {number} y
* @param {number} width
* @param {number} height
* @param {(number|object)} radius
* @param {number} [radius.topLeft]
* @param {number} [radius.topRight]
* @param {number} [radius.bottomLeft]
* @param {number} [radius.bottomRight]
* @param {number} [pointsInArc=5]
* @returns {array} [x1, y1, x2, y2, ... xn, yn]
*/
export function roundedRect(x, y, width, height, radius, pointsInArc)
{
pointsInArc = pointsInArc || 5
if (isNaN(radius))
{
radius.topLeft = radius.topLeft || 0
radius.topRight = radius.topRight || 0
radius.bottomLeft = radius.bottomLeft || 0
radius.bottomRight = radius.bottomRight || 0
const points = [
x - width / 2 + radius.topLeft, y - height / 2,
x + width / 2 - radius.topRight, y - height / 2
]
if (radius.topRight)
{
points.push(...arc(x + width / 2 - radius.topRight, y - height / 2 + radius.topRight, 3 * Math.PI / 2, Math.PI * 2, radius.topRight, pointsInArc))
}
points.push(
x + width / 2, y - height / 2 + radius.topRight,
x + width / 2, y + height / 2 - radius.bottomRight
)
if (radius.bottomRight)
{
points.push(...arc(x + width / 2 - radius.bottomRight, y + height / 2 - radius.bottomRight, 0, Math.PI / 2, radius.bottomRight, pointsInArc))
}
points.push(
x + width / 2 - radius.bottomRight, y + height / 2,
x - width / 2 + radius.bottomLeft, y + height / 2
)
if (radius.bottomLeft)
{
points.push(...arc(x - width / 2 + radius.bottomLeft, y + height / 2 - radius.bottomLeft, Math.PI / 2, Math.PI, radius.bottomLeft, pointsInArc))
}
points.push(
x - width / 2, y + height / 2 - radius.bottomLeft,
x - width / 2, y - height / 2 + radius.topLeft
)
if (radius.topLeft)
{
points.push(...arc(x - width / 2 + radius.topLeft, y - height / 2 + radius.topLeft, Math.PI, 3 * Math.PI / 2, radius.topLeft, pointsInArc))
}
return points
}
return [
x - width / 2 + radius, y - height / 2,
x + width / 2 - radius, y - height / 2,
...arc(x + width / 2 - radius, y - height / 2 + radius, 3 * Math.PI / 2, 2 * Math.PI, radius, pointsInArc),
x + width / 2, y - height / 2 + radius,
x + width / 2, y + height / 2 - radius,
...arc(x + width / 2 - radius, y + height / 2 - radius, 0, Math.PI / 2, radius, pointsInArc),
x + width / 2 - radius, y + height / 2,
x - width / 2 + radius, y + height / 2,
...arc(x - width / 2 + radius, y + height / 2 - radius, Math.PI / 2, Math.PI, radius, pointsInArc),
x - width / 2, y + height / 2 - radius,
x - width / 2, y - height / 2 + radius,
...arc(x - width / 2 + radius, y - height / 2 + radius, Math.PI, 3 * Math.PI / 2, radius, pointsInArc),
]
}</code></pre>
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<h2><a href="index.html">Home</a></h2><h3>Modules</h3><ul><li><a href="module-shape-points.html">shape-points</a></li><li><a href="module-shape-points_arc.html">shape-points/arc</a></li><li><a href="module-shape-points_bezierCurveThrough.html">shape-points/bezierCurveThrough</a></li><li><a href="module-shape-points_bezierCurveTo.html">shape-points/bezierCurveTo</a></li><li><a href="module-shape-points_circle.html">shape-points/circle</a></li><li><a href="module-shape-points_ellipse.html">shape-points/ellipse</a></li><li><a href="module-shape-points_line.html">shape-points/line</a></li><li><a href="module-shape-points_quadraticCurveTo.html">shape-points/quadraticCurveTo</a></li><li><a href="module-shape-points_rect.html">shape-points/rect</a></li><li><a href="module-shape-points_roundedRect.html">shape-points/roundedRect</a></li></ul>
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