The operator attribute either defines the compositing operation or morphing operation to be performed. The elements that are using this attribute includes: <feComposite> and <feMorphology>.
Syntax:
operator = erode|dilate|over|arithmetic|out|atop|xor|lighter|in
Attribute Values: The operator attribute accepts the values mentioned above and described below
- over: It shows that the source graphic defined in the in attribute is placed over the destination graphic defined in the in2 attribute.
- in: It shows that the parts of the source graphic defined in the in attribute replace the destination graphic defined in the in2 attribute.
- out: It shows that the parts of the source graphic defined in the in attribute are displayed.
- atop: It shows that the parts of the source graphic which overlap the destination graphic, replace the destination graphic.
- xor: It shows that the non-overlapping regions of the source graphic defined in the in attribute are combined with the destination graphic defined in the in2 attribute.
- lighter: It shows that the sum of the source graphic and the destination graphic defined in the in and in2 attribute respectively, is displayed.
- arithmetic: It shows that the source graphic and the destination graphic defined in the in and in2 attribute respectively are combined using the following formula: result = k1*i1*i2 + k2*i1 + k3*i2 + k4
- erode: It thins the source graphic defined in the in attribute.
- dilate: It fattens the source graphic defined in the in attribute.
Below examples illustrate the use of operator attribute.
Example 1:
HTML
<!DOCTYPE html><html>
<body>
<h1 style="color: green;">
GeeksforGeeks
</h1>
<svg viewBox="0 0 420 70"
<filter id="thin">
<feMorphology operator="erode" radius="0.4" />
</filter>
<text x="10" y="20" fill="green" filter="url(#thin)">
Thin text
</text>
</svg>
</body>
</html>
|
Output:
Example 2:
HTML
<!DOCTYPE html><html>
<body>
<h1 style="color: green;">
GeeksforGeeks
</h1>
<svg viewBox="0 0 420 70"
<filter id="fat">
<feMorphology operator="dilate" radius="0.8" />
</filter>
<text x="10" y="20" fill="green" filter="url(#fat)">
Fat text
</text>
</svg>
</body>
</html>
|
Output: