Constructor
# new mat2d()
- Source:
A mat2d contains six elements defined as:
[a, c, tx, b, d, ty]This is a short form for the 3x3 matrix:
[a, c, tx, b, d, ty, 0, 0, 1]The last row is ignored so the array is shorter and operations are faster.
Methods
# (static) clone(a) → {mat2d}
- Source:
Creates a new mat2d initialized with values from an existing matrix
Parameters:
| Name | Type | Description |
|---|---|---|
a |
mat2d | matrix to clone |
Returns:
a new 2x3 matrix
- Type
- mat2d
# (static) copy(out, a) → {mat2d}
- Source:
Copy the values from one mat2d to another
Parameters:
| Name | Type | Description |
|---|---|---|
out |
mat2d | the receiving matrix |
a |
mat2d | the source matrix |
Returns:
out
- Type
- mat2d
# (static) create() → {mat2d}
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Creates a new identity mat2d
Returns:
a new 2x3 matrix
- Type
- mat2d
# (static) determinant(a) → {Number}
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Calculates the determinant of a mat2d
Parameters:
| Name | Type | Description |
|---|---|---|
a |
mat2d | the source matrix |
Returns:
determinant of a
- Type
- Number
# (static) frob(a) → {Number}
- Source:
Returns Frobenius norm of a mat2d
Parameters:
| Name | Type | Description |
|---|---|---|
a |
mat2d | the matrix to calculate Frobenius norm of |
Returns:
Frobenius norm
- Type
- Number
# (static) identity(out) → {mat2d}
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Set a mat2d to the identity matrix
Parameters:
| Name | Type | Description |
|---|---|---|
out |
mat2d | the receiving matrix |
Returns:
out
- Type
- mat2d
# (static) invert(out, a) → {mat2d}
- Source:
Inverts a mat2d
Parameters:
| Name | Type | Description |
|---|---|---|
out |
mat2d | the receiving matrix |
a |
mat2d | the source matrix |
Returns:
out
- Type
- mat2d
# (static) mul()
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Alias for mat2d.multiply
# (static) multiply(out, a, b) → {mat2d}
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Multiplies two mat2d's
Parameters:
| Name | Type | Description |
|---|---|---|
out |
mat2d | the receiving matrix |
a |
mat2d | the first operand |
b |
mat2d | the second operand |
Returns:
out
- Type
- mat2d
# (static) rotate(out, a, rad) → {mat2d}
- Source:
Rotates a mat2d by the given angle
Parameters:
| Name | Type | Description |
|---|---|---|
out |
mat2d | the receiving matrix |
a |
mat2d | the matrix to rotate |
rad |
Number | the angle to rotate the matrix by |
Returns:
out
- Type
- mat2d
# (static) scale(out, a, v) → {mat2d}
- Source:
Scales the mat2d by the dimensions in the given vec2
Parameters:
| Name | Type | Description |
|---|---|---|
out |
mat2d | the receiving matrix |
a |
mat2d | the matrix to translate |
v |
vec2 | the vec2 to scale the matrix by |
Returns:
out
- Type
- mat2d
# (static) translate(out, a, v) → {mat2d}
- Source:
Translates the mat2d by the dimensions in the given vec2
Parameters:
| Name | Type | Description |
|---|---|---|
out |
mat2d | the receiving matrix |
a |
mat2d | the matrix to translate |
v |
vec2 | the vec2 to translate the matrix by |
Returns:
out
- Type
- mat2d