Matrix

Object Hierarchy:

[ CCode ( type_id = "COGL_TYPE_MATRIX" ) ]
public struct Matrix

Matrices are used in Cogl to describe affine model-view transforms, texture transforms, and projective transforms.

This exposes a utility API that can be used for direct manipulation of these matrices.

Namespace: Cogl

Package: cogl-1.0

public static bool equal (void* v1, void* v2)
Compares two matrices to see if they represent the same transformation.

public Matrix.from_array (float[] array)
Initializes this with the contents of array
public Matrix.identity ()
Resets matrix to the identity matrix:
public Matrix.multiply (Matrix a, Matrix b)
Multiplies the two supplied matrices together and stores the resulting matrix inside this.

public void frustum (float left, float right, float bottom, float top, float z_near, float z_far)
Multiplies this by the given frustum perspective matrix.
public unowned float[] get_array ()
Casts this to a float array which can be directly passed to OpenGL.
public bool get_inverse (out Matrix inverse)
Gets the inverse transform of a given matrix and uses it to initialize a new Matrix.
public void ortho (float left, float right, float bottom, float top, float z_near, float z_far)
Multiplies this by a parallel projection matrix.
public void perspective (float fov_y, float aspect, float z_near, float z_far)
Multiplies this by the described perspective matrix
public void rotate (float angle, float x, float y, float z)
Multiplies this with a rotation matrix that applies a rotation of angle degrees around the specified 3D vector.
public void scale (float sx, float sy, float sz)
Multiplies this with a transform matrix that scales along the X, Y and Z axis.
public void transform_point (ref float x, ref float y, ref float z, ref float w)
Transforms a point whos position is given and returned as four float components.
public void translate (float x, float y, float z)
Multiplies this with a transform matrix that translates along the X, Y and Z axis.