Class: shaka.ui.Matrix4x4

Constructor

new Matrix4x4()

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Members

EPSILON_ :number

Type:
  • number
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Methods

create() → {Float32Array}

Creates a new identity 4x4 Matrix
Source:
Returns:
a new 4x4 matrix
Type
Float32Array

fromQuat(outnon-null, qnon-null)

Calculates a 4x4 matrix from the given quaternion
Parameters:
Name Type Description
out Float32Array 4x4 matrix receiving operation result
q Float32Array Quaternion to create matrix from
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frustum(outnon-null, left, right, bottom, top, near, far) → {Float32Array}

Generates a frustum matrix with the given bounds
Parameters:
Name Type Description
out Float32Array 4x4 matrix frustum matrix will be written into
left number Left bound of the frustum
right number Right bound of the frustum
bottom number Bottom bound of the frustum
top number Top bound of the frustum
near number Near bound of the frustum
far number Far bound of the frustum
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Returns:
Type
Float32Array

getRotation(outnon-null, matnon-null) → {Float32Array}

Returns a quaternion representing the rotational component of a transformation matrix. If a matrix is built with fromRotationTranslation, the returned quaternion will be the same as the quaternion originally supplied.
Parameters:
Name Type Description
out Float32Array Quaternion to receive the rotation component
mat Float32Array Matrix to be decomposed (input)
Source:
Returns:
Type
Float32Array

getScaling_(outnon-null, matnon-null)

Returns the scaling factor component of a transformation matrix. If a matrix is built with fromRotationTranslationScale with a normalized Quaternion parameter, the returned vector will be the same as the scaling vector originally supplied.
Parameters:
Name Type Description
out Float32Array Vector to receive scaling factor component
mat Float32Array Matrix to be decomposed (input)
Source:

identity_(outnon-null) → {Float32Array}

Set a 4x4 matrix to the identity matrix
Parameters:
Name Type Description
out Float32Array the receiving matrix
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Returns:
Type
Float32Array

lookAt(outnon-null, eyenon-null, centernon-null, upnon-null) → {Float32Array}

Generates a look-at matrix with the given eye position, focal point, and up axis.
Parameters:
Name Type Description
out Float32Array 4x4 matrix frustum matrix will be written into
eye Array.<number> Position of the viewer
center Array.<number> Point the viewer is looking at
up Array.<number> Vector pointing up
Source:
Returns:
Type
Float32Array

multiply(outnon-null, anon-null, bnon-null)

Multiplies two 4x4 matrix
Parameters:
Name Type Description
out Float32Array the receiving matrix
a Float32Array the first operand
b Float32Array the second operand
Source:

perspective(outnon-null, fovy, aspect, near, far) → {Float32Array}

Generates a perspective projection matrix with the given bounds. The near/far clip planes correspond to a normalized device coordinate Z range of [-1, 1], which matches WebGL's clip volume. Passing null/undefined/no value for far will generate infinite projection matrix.
Parameters:
Name Type Description
out Float32Array 4x4 matrix frustum matrix will be written into
fovy number Vertical field of view in radians
aspect number Aspect ratio. typically viewport width/height
near number Near bound of the frustum
far number Far bound of the frustum, can be null or Infinity
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Returns:
Type
Float32Array

rotateX(outnon-null, anon-null, rad)

Rotates a matrix by the given angle around the X axis
Parameters:
Name Type Description
out Float32Array the receiving matrix
a Float32Array the matrix to rotate
rad number the angle to rotate the matrix by
Source:

rotateY(outnon-null, anon-null, rad)

Rotates a matrix by the given angle around the Y axis
Parameters:
Name Type Description
out Float32Array the receiving matrix
a Float32Array the matrix to rotate
rad number the angle to rotate the matrix by
Source:

rotateZ(outnon-null, anon-null, rad)

Rotates a matrix by the given angle around the Z axis
Parameters:
Name Type Description
out Float32Array the receiving matrix
a Float32Array the matrix to rotate
rad number the angle to rotate the matrix by
Source:

scale(outnon-null, anon-null, vnon-null)

Scales the 4x4 matrix by the dimensions in the given vector not using vectorization
Parameters:
Name Type Description
out Float32Array the receiving matrix
a Float32Array the matrix to scale
v Array.<number> the vector to scale the matrix by
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