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SVGFESpotLightElement: limitingConeAngle property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨July 2015⁩.

The limitingConeAngle read-only property of the SVGFESpotLightElement interface reflects the limitingConeAngle attribute of the given <feSpotLight> element.

Value

An SVGAnimatedNumber object.

Examples

Accessing the `limitingConeAngle` attribute of the `<feSpotLight>` element

In this example, we access the angle in degrees between the spot light axis (i.e., the axis between the light source and the point to which it is pointing at) and the spot light cone, by using the limitingConeAngle read-only property of the SVGFESpotLightElement interface.

<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
  <defs>
    <filter id="specularLightingFilter">
      <!-- Apply a specular light effect to the SourceGraphic -->
      <feSpecularLighting
        in="SourceGraphic"
        specularExponent="40"
        lighting-color="lime"
        surfaceScale="5">
        <feSpotLight
          x="100"
          y="100"
          z="50"
          pointsAtX="100"
          pointsAtY="100"
          limitingConeAngle="30"
          specularExponent="40" />
      </feSpecularLighting>
    </filter>
  </defs>

  <!-- A circle to display the effect of the lighting -->
  <circle
    cx="100"
    cy="100"
    r="50"
    fill="lightblue"
    filter="url(#specularLightingFilter)" />
</svg>

// Select the feSpotLight element
const spotLightElement = document.querySelector("feSpotLight");

// Access the limitingConeAngle property
console.log(spotLightElement.limitingConeAngle.baseVal); // Output: 30

Specifications

Specification
Filter Effects Module Level 1> # dom-svgfespotlightelement-limitingconeangle>

Browser compatibility

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet	WebView Android	WebView on iOS
`limitingConeAngle`	5	12	3	≤12.1	6	18	4	≤12.1	6	1.0	4.4	6