Matrix4x4

Massive Loop7/14/25About 2 min

Matrix4x4

standard 4x4 transformation matrix.

Members

Properties

Name	Description
`Matrix4x4`.`[index]`	Access element at sequential index (1..16 inclusive).
`Matrix4x4`.[`[row, column]`](./[row, column].md)	Access element at [row, column].
`Matrix4x4`.`decomposeProjection`	This property takes a projection matrix and returns the six plane coordinates that define a projection frustum.
`Matrix4x4`.`determinant`	The determinant of the matrix. (Read Only)
`Matrix4x4`.`inverse`	The inverse of this matrix. (Read Only)
`Matrix4x4`.`isIdentity`	Checks whether this is an identity matrix. (Read Only)
`Matrix4x4`.`lossyScale`	Attempts to get a scale value from the matrix. (Read Only)
`Matrix4x4`.`rotation`	Attempts to get a rotation quaternion from this matrix.
`Matrix4x4`.`transpose`	Returns the transpose of this matrix (Read Only).

Static Properties

Name	Description
`Matrix4x4`.`identity`	Returns the identity matrix (Read Only).
`Matrix4x4`.`zero`	Returns a matrix with all elements set to zero (Read Only).

Methods

Name	Description
`Matrix4x4`.`GetColumn(index)`	Get a column of the matrix. The i-th column is returned as a Vector4. i must be from 1 to 4 inclusive.
`Matrix4x4`.`GetRow(index)`	Returns a row of the matrix.
`Matrix4x4`.`MultiplyPoint(point)`	Transforms a position by this matrix (generic).
`Matrix4x4`.`MultiplyPoint3x4( point)`	Transforms a position by this matrix (fast).
`Matrix4x4`.`MultiplyVector(vector)`	Transforms a direction by this matrix.
`Matrix4x4`.`SetColumn(index, column)`	Sets a column of the matrix.
`Matrix4x4`.`SetRow(index, row)`	Sets a row of the matrix.
`Matrix4x4`.`TransformPlane(plane)`	Returns a plane that is transformed in space.
`Matrix4x4`.`ValidTRS()`	Checks if this matrix is a valid transform matrix.

Static Methods

Name	Description
`Matrix4x4`.`Frustum(left, right, bottom, top, zNear, zFar)`	This function returns a projection matrix with viewing frustum that has a near plane defined by the coordinates that were passed in.
`Matrix4x4`.`Frustum(frustumPlanes)`	This function returns a projection matrix with viewing frustum that has a near plane defined by the coordinates that were passed in.
`Matrix4x4`.`Inverse3DAffine(input)`	Computes the inverse of a 3D affine matrix.
`Matrix4x4`.`LookAt(from, to, up)`	Create a "look at" matrix.
`Matrix4x4`.`Ortho(left, right, bottom, top, zNear, zFar)`	Create an orthogonal projection matrix.
`Matrix4x4`.`Perspective(fov, aspect, zNear, zFar)`	Create a perspective projection matrix.
`Matrix4x4`.`Rotate(q)`	Creates a rotation matrix.
`Matrix4x4`.`Scale(vector)`	Creates a scaling matrix.
`Matrix4x4`.`Translate(vector)`	Creates a translation matrix.
`Matrix4x4`.`TRS(pos, q, s)`	Creates a translation, rotation and scaling matrix.

Operators

Name	Description
Operator (Matrix4x4*Matrix4x4)	Multiplies two matrices.

| Operator (Matrix4x4*Vector4) | Transforms a Vector4 by a matrix. |

A transformation matrix can perform arbitrary linear 3D transformations (i.e. translation, rotation, scale, shear etc.) and perspective transformations using homogenous coordinates. You rarely use matrices in scripts; most often using Vector3s, Quaternions and functionality of Transform class is more straightforward. Plain matrices are used in special cases like setting up nonstandard camera projection.