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matrix3d()

The matrix3d() CSS function defines a 3D transformation as a 4x4 homogeneous matrix. Its result is a <transform-function> data type.

The matrix3d() function is specified with 16 values. They are described in the column-major order.

matrix3d(a1, b1, c1, d1, a2, b2, c2, d2, a3, b3, c3, d3, a4, b4, c4, d4)

a1 b1 c1 d1 a2 b2 c2 d2 a3 b3 c3 d3 d4: Are <number>s describing the linear transformation.
a4 b4 c4: Are <number>s describing the translation to apply.

Note: Until Firefox 16, Gecko accepted a <length> value for a4, b4 and c4.

Cartesian coordinates on ℝ²	Homogeneous coordinates on ℝℙ²	Cartesian coordinates on ℝ³	Homogeneous coordinates on ℝℙ³
This transformation applies to the 3D space and can't be represented on the plane.		A generic 3D affine transformation can't be represented using a Cartesian-coordinate matrix, as translations are not linear transformations.	$(\begin{matrix} a1 & a2 & a3 & a4 \\ b1 & b2 & b3 & b4 \\ c1 & c2 & c3 & c4 \\ d1 & d2 & d3 & d4 \end{matrix})$

TBD

Please see the <transform-function> data type for compatibility info.