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SVGGraphicsElement: getScreenCTM() method - Web APIs | MDN
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SVGGraphicsElement: getScreenCTM() method
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 getScreenCTM() method of the SVGGraphicsElement interface represents the matrix that transforms the current element's coordinate system to the coordinate system of the SVG viewport for the SVG document fragment.
Syntax
js
getScreenCTM()
Parameters
None.
Return value
A DOMMatrix object.
Examples
Getting the Screen Transformation Matrix
html
<svg xmlns="https://www.w3.org/2000/svg" width="400" height="400">
<!-- Circle with translation and scale -->
<circle
id="circle"
cx="50"
cy="50"
r="30"
fill="blue"
transform="translate(100, 150) scale(2)" />
</svg>
js
const circle = document.getElementById("circle");
// Get the current screen transformation matrix
const screenCTM = circle.getScreenCTM();
console.log("Screen transformation matrix:");
console.log(
`a: ${screenCTM.a}, b: ${screenCTM.b}, c: ${screenCTM.c}, d: ${screenCTM.d}, e: ${screenCTM.e}, f: ${screenCTM.f}`,
);
// Output: a: 2, b: 0, c: 0, d: 2, e: 100, f: 150
Specifications
| Specification |
|---|
| Scalable Vector Graphics (SVG) 2 # __svg__SVGGraphicsElement__getScreenCTM |
Browser compatibility
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