A standard 4x4 transformation 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.
Consult any graphics textbook for in depth explanation of transformation matrices.
In Unity, Matrix4x4 is used by several Transform, Camera, Material and GL functions.
Matrices in unity are column major. Data is accessed as: row + (column*4)
| this [int row, int column] |
Access element at [row, column]. |
| this [int index] |
Access element at sequential index (0..15 inclusive). |
| inverse |
The inverse of this matrix (Read Only). |
| transpose |
Returns the transpose of this matrix (Read Only). |
| isIdentity |
Is this the identity matrix? |
| GetColumn |
Get a column of the matrix. |
| GetRow |
Returns a row of the matrix. |
| SetColumn |
Sets a column of the matrix. |
| SetRow |
Sets a row of the matrix. |
| MultiplyPoint |
Transforms a position by this matrix (generic). |
| MultiplyPoint3x4 |
Transforms a position by this matrix (fast). |
| MultiplyVector |
Transforms a direction by this matrix. |
| SetTRS |
Sets this matrix to a translation, rotation and scaling matrix. |
| ToString |
Returns a nicely formatted string for this matrix. |
| zero |
Returns a matrix with all elements set to zero (Read Only). |
| identity |
Returns the identity matrix (Read Only). |
| operator * |
Multiplies two matrices. |
| Scale |
Creates a scaling matrix. |
| TRS |
Creates a translation, rotation and scaling matrix. |
| Ortho |
Creates an orthogonal projection matrix. |
| Perspective |
Creates a perspective projection matrix. |