Baseline Widely available
The matrix read-only property of the SVGTransform interface represents the transformation matrix that corresponds to the transformation type.
In case the matrix object is changed directly (i.e., without using the methods on the SVGTransform interface itself) then the type of the SVGTransform changes to SVG_TRANSFORM_MATRIX.
For SVG_TRANSFORM_MATRIX, the matrix contains the a, b, c, d, e, f values supplied by the user.
For SVG_TRANSFORM_TRANSLATE, e and f represent the translation amounts (a=1, b=0, c=0 and d=1).
For SVG_TRANSFORM_SCALE, a and d represent the scale amounts (b=0, c=0, e=0 and f=0).
For SVG_TRANSFORM_SKEWX and SVG_TRANSFORM_SKEWY, a, b, c and d represent the matrix which will result in the given skew (e=0 and f=0).
For SVG_TRANSFORM_ROTATE, a, b, c, d, e and f together represent the matrix which will result in the given rotation. When the rotation is around the center point (0, 0), e and f will be zero.
A live DOMMatrix object.
<svg width="200" height="200" xmlns="http://www.w3.org/2000/svg">
<rect id="rect" x="50" y="50" width="100" height="100" fill="red" />
</svg>
const rect = document.getElementById("rect");
const transformList = rect.transform.baseVal;
// Create and add a rotation transform
const rotateTransform = rect.ownerSVGElement.createSVGTransform();
rotateTransform.setRotate(30, 100, 100); // Rotate 30 degrees
transformList.appendItem(rotateTransform);
// Access the matrix
const matrix = transformList.getItem(0).matrix;
console.log(matrix.a, matrix.b, matrix.c, matrix.d, matrix.e, matrix.f);
// Modify the matrix directly
matrix.a = 2; // Double the horizontal scaling
console.log(transformList.getItem(0).type); // Output: 1 (SVG_TRANSFORM_MATRIX)
<svg width="200" height="200" xmlns="http://www.w3.org/2000/svg">
<rect id="rect" x="50" y="50" width="100" height="100" fill="blue" />
</svg>
const rect = document.getElementById("rect");
const transformList = rect.transform.baseVal;
// Apply a translation transform
const translateTransform = rect.ownerSVGElement.createSVGTransform();
translateTransform.setTranslate(20, 30);
transformList.appendItem(translateTransform);
// Access the matrix
const matrix = transformList.getItem(0).matrix;
console.log(matrix.e, matrix.f); // Output: 20, 30
console.log(transformList.getItem(0).type); // Output: 2 (SVG_TRANSFORM_TRANSLATE)
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