# matrix3d()

The `matrix3d()` CSS function describes a 3D transform as a 4x4 homogeneous matrix. The 16 parameters are described in the column-major order.

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

## Syntax

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

## Values

a1 b1 c1 d1 a2 b2 c2 d2 a3 b3 c3 d3 d4
Are `<number>` describing the linear transformation.
a4 b4 c4
Are `<number>` describing the translation to apply.
Cartesian coordinates on ℝ2 Homogeneous coordinates on ℝℙ2 Cartesian coordinates on ℝ3 Homogeneous coordinates on ℝℙ3
This transform applies to the 3D space and cannot be represented on the plan. Cartesian-coordinate matrix doesn't allow to represent a generic 3d affine transforms as translations are not linear transforms. $\left(\begin{array}{cccc}a1& a2& a3& a4\\ b1& b2& b3& b4\\ c1& c2& c3& c4\\ d1& d2& d3& d4\end{array}\right)$

TBD

## Document Tags and Contributors

Tags:
Contributors to this page: Sebastianz, mrstork, SphinxKnight
Last updated by: Sebastianz,