API Reference > geometry-core > CartesianGeometry > Transform > multiplyTransformMatrix3d multiplyTransformMatrix3d Method multiply this Transform times other Matrix3d, with other considered to be a Transform with 0 translation. ‘this‘ transform with matrix part A and translation b[Bb01]‘other‘ matrix B promoted to block transform[B001]product[Aa01][B001]=[ABa01]\begin{matrix} \text{`this` transform with matrix part }\bold{A}\text{ and translation }\bold{b} & \blockTransform{B}{b}\\ \text{`other` matrix }\bold{B}\text{ promoted to block transform} & \blockTransform{B}{0} \\ \text{product}& \blockTransform{A}{a}\blockTransform{B}{0}=\blockTransform{AB}{a} \end{matrix}‘this‘ transform with matrix part A and translation b‘other‘ matrix B promoted to block transformproduct[B0b1][B001][A0a1][B001]=[AB0a1] multiplyTransformMatrix3d(other: Matrix3d, result?: Transform): Transform Parameter Type Description other Matrix3d right hand Matrix3d for multiplication. result Transform optional preallocated result to reuse. Returns - Transform Defined in geometry3d/Transform.ts Line 582 Last Updated: 12 June, 2024