Specs

add(matrix_a :: Scenic.Math.matrix(), matrix_b :: Scenic.Math.matrix()) ::
  Scenic.Math.matrix()

Add two matrices together.

This operation is implemented as a NIF for performance.

Parameters:

• matrix_a: The first matrix
• matrix_b: The second matrix

Returns: The resulting matrix

Specs

adjugate(matrix :: Scenic.Math.matrix()) :: Scenic.Math.matrix()

Calculate the adjugate of a matrix

This operation is implemented as a NIF for performance.

Parameters:

• matrix: A matrix

Returns: The resulting matrix

Specs

build_rotate_around(angle :: number(), pin :: Scenic.Math.point()) ::
  Scenic.Math.matrix()

Build a matrix that represents a 2D rotation around a point.

Parameters:

• angle: the amount to rotate, in radians
• pin: position to pin the rotation around

Returns: A binary matrix

Specs

build_rotation(angle :: number()) :: Scenic.Math.matrix()

Build a matrix that represents a 2D rotation around the origin.

Parameters:

• angle: the amount to rotate, in radians

Returns: A binary matrix

Specs

build_scale(scale :: number() | Scenic.Math.vector_2()) :: Scenic.Math.matrix()

Build a matrix that represents a scaling operation.

Parameters:

• scale: the amount to scale by. Can be either a number or a vector_2

Returns: A binary matrix

Specs

build_translation(vector_2 :: Scenic.Math.vector_2()) :: Scenic.Math.matrix()

Build a matrix that represents a simple translation.

Parameters:

• vector_2: the vector defining how much to translate

Returns: A binary matrix

Specs

close?(
  matrix_a :: Scenic.Math.matrix(),
  matrix_a :: Scenic.Math.matrix(),
  tolerance :: number()
) :: boolean()

Test if two matrices are close in value to each other.

Parameters:

• matrix_a: The first matrix
• matrix_b: The second matrix
• tolerance: Defines what close means. Defaults to: 0.000001

Returns: A boolean

Specs

determinant(matrix :: Scenic.Math.matrix()) :: Scenic.Math.matrix()

Calculate the determinant of a matrix

This operation is implemented as a NIF for performance.

Parameters:

• matrix: A matrix

Returns: The resulting matrix

Specs

div(matrix :: Scenic.Math.matrix(), divisor :: number()) :: Scenic.Math.matrix()

Divide a matrix by a scalar.

This operation is implemented as a NIF for performance.

Parameters:

• matrix: A matrix
• divisor: A number (scalar) to divide by

Returns: The resulting matrix

Specs

get(matrix :: Scenic.Math.matrix(), x :: number(), y :: number()) :: number()

Get a single value out of a binary matrix.

Parameters:

• matrix: The source matrix
• x: the column to pull the data from
• y: the row to pull the data from

Returns: A number

Specs

get_xy(matrix :: Scenic.Math.matrix()) :: Scenic.Math.vector_2()

Extract the 2D vector represented by the matrix.

Parameters:

• matrix: The source matrix

Returns: A vector_2

Specs

identity() :: Scenic.Math.matrix()

The identity matrix

Specs

invert(matrix :: Scenic.Math.matrix()) :: Scenic.Math.matrix()

Inverte a matrix.

This operation is implemented as a NIF for performance.

Parameters:

• matrix: A matrix

Returns: The resulting matrix

Specs

mul(matrix_list :: [Scenic.Math.matrix()]) :: Scenic.Math.matrix()

Multiply a list of matrices together.

This operation is implemented as a NIF for performance.

Parameters:

• matrix_list: A list of matrices

Returns: The resulting matrix

Specs

mul(
  matrix :: Scenic.Math.matrix(),
  multiplier :: number() | Scenic.Math.matrix()
) :: Scenic.Math.matrix()

Multiply a matrix by another matrix or a scalar.

This operation is implemented as a NIF for performance.

Parameters:

• matrix: A matrix
• multiplier: A number (scalar) or a matrix to multiply by

Returns: The resulting matrix

Specs

project_vector(
  matrix :: Scenic.Math.matrix(),
  vector_2 :: Scenic.Math.vector_2()
) :: Scenic.Math.vector_2()

project_vector(
  matrix :: Scenic.Math.matrix(),
  vector_list :: [Scenic.Math.vector_2()]
) :: [Scenic.Math.vector_2()]

Project a vector by a matrix.

This operation is implemented as a NIF for performance.

Parameters:

• matrix: A matrix
• vector: The vector to project

Returns: The projected vector

Project a list of vectors by a matrix.

This operation is implemented as a NIF for performance.

Parameters:

• matrix: A matrix
• vectors: The list of vectors to project

Returns: A list of projected vectors

Specs

put(matrix :: Scenic.Math.matrix(), x :: number(), y :: number(), v :: number()) ::
  Scenic.Math.matrix()

Put a single value into a binary matrix.

Parameters:

• matrix: The source matrix
• x: the column to pull the data from
• y: the row to pull the data from
• v: the value to put into the matrix. Must be a number.

Returns: A number

Specs

rotate(matrix :: Scenic.Math.matrix(), angle :: number() | nil) ::
  Scenic.Math.matrix()

Multiply a matrix by a rotation.

Parameters:

• matrix: The incoming source matrix
• angle: the amount to rotate, in radians or nil (which does nothing

Returns: A binary matrix

Specs

scale(
  matrix :: Scenic.Math.matrix(),
  scale :: number() | Scenic.Math.vector_2() | nil
) :: Scenic.Math.matrix()

Multiply a matrix by a scale factor.

Parameters:

• matrix: The incoming source matrix
• scale: the amount to scale by. Can be either a number, a vector, or nil (which does nothing)

Returns: A binary matrix

Specs

sub(matrix_a :: Scenic.Math.matrix(), matrix_b :: Scenic.Math.matrix()) ::
  Scenic.Math.matrix()

Subtract one matrix from another.

This operation is implemented as a NIF for performance.

Parameters:

• matrix_a: The first matrix
• matrix_b: The second matrix, which is subtracted from the first

Returns: The resulting matrix

Specs

translate(
  matrix :: Scenic.Math.matrix(),
  vector_2 :: Scenic.Math.vector_2() | nil
) :: Scenic.Math.matrix()

Multiply a matrix by a translation.

Parameters:

• matrix: The incoming source matrix
• vector_2: the vector to translate by or nil (which does nothing)

Returns: A binary matrix

Specs

transpose(matrix :: Scenic.Math.matrix()) :: Scenic.Math.matrix()

Transpose a matrix

This operation is implemented as a NIF for performance.

Parameters:

• matrix: A matrix

Returns: The resulting matrix

Specs

zero() :: Scenic.Math.matrix()

A matrix where all the values are 0