DOMMatrixReadOnly: toFloat64Array() method
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.
The toFloat64Array() method of the DOMMatrixReadOnly interface returns a new Float64Array containing all 16 elements (m11, m12, m13, m14, m21, m22, m23, m24, m31, m32, m33, m34, m41, m42, m43, m44) which comprise the matrix. The elements are stored into the array as double-precision floating-point numbers in column-major (colexographical access, or "colex") order. (In other words, down the first column from top to bottom, then the second column, and so forth.)
Syntax
js
toFloat64Array()
Parameters
None.
Return value
A Float64Array; an array of the matrix's 16 element values.
Examples
js
const matrix = new DOMMatrixReadOnly();
let float64 = matrix.translate(20, 30, 50).toFloat64Array();
console.log(float64); // Float64Array(16) [ 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 20, 30, 0, 1 ] ]
console.log(`m41: ${float64[12]}, m42: ${float64[13]}, m43: ${float64[14]}`); // m41: 20, m42: 30, M44: 40
float64 = matrix.rotate(30).toFloat64Array();
console.log(float64);
console.log(`m11: ${float64[0]}, m12: ${float64[1]}`); // m11: 0.8660254037844387, m12: 0.49999999999999994
Specifications
| Specification |
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| Geometry Interfaces Module Level 1 # dom-dommatrixreadonly-tofloat64array |
Browser compatibility
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toFloat64Array()
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