intercept

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 intercept attribute defines the intercept of the linear function of color component transfers when the type attribute is set to linear.

The linear function is defined as slope * color + intercept, where color is the color value, the intercept provides a base value for the result, and the slope is a scaling factor.

The intercept attribute is supported by children of the <feComponentTransfer> filter primitive and is used with the following SVG component transfer function elements when type="linear" is set:

Usage notes

Value	`<number>`
Default value	`0`
Animatable	Yes

<number>: This value indicates the intercept of the linear component transfer functions.

Example

html,
body,
svg {
  height: 100%;
}

html

<svg viewBox="0 0 420 200" xmlns="http://www.w3.org/2000/svg">
  <defs>
    <linearGradient
      id="gradient"
      gradientUnits="userSpaceOnUse"
      x1="0"
      y1="0"
      x2="200"
      y2="0">
      <stop offset="0" stop-color="#ff0000" />
      <stop offset="0.5" stop-color="#00ff00" />
      <stop offset="1" stop-color="#0000ff" />
    </linearGradient>
  </defs>

  <filter id="componentTransfer1" x="0" y="0" width="100%" height="100%">
    <feComponentTransfer>
      <feFuncR type="linear" intercept="0" />
      <feFuncG type="linear" intercept="0" />
      <feFuncB type="linear" intercept="0" />
    </feComponentTransfer>
  </filter>
  <filter id="componentTransfer2" x="0" y="0" width="100%" height="100%">
    <feComponentTransfer>
      <feFuncR type="linear" intercept="0.3" />
      <feFuncG type="linear" intercept="0.1" />
      <feFuncB type="linear" intercept="0.8" />
    </feComponentTransfer>
  </filter>

  <rect
    x="0"
    y="0"
    width="200"
    height="200"
    fill="url(#gradient)"
    style="filter: url(#componentTransfer1);" />
  <rect
    x="0"
    y="0"
    width="200"
    height="200"
    fill="url(#gradient)"
    style="filter: url(#componentTransfer2); transform: translateX(220px);" />
</svg>

Specifications

Specification
Filter Effects Module Level 1 # element-attrdef-fecomponenttransfer-intercept

Browser compatibility

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