new Matrix2D()
A matrix that implements 2D affine transformations. Most of the method return the current instance for chaining.
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- To Do:
-
- Make it column major
Methods
copyFrom(m)
Copies values from m into the current matrix
Parameters:
| Name | Type | Description |
|---|---|---|
m |
SQR.Matrix2D | matrix to copy values from. Can be or {Float32Array} |
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copyTo(m)
Copies current matrix values to m
Parameters:
| Name | Type | Description |
|---|---|---|
m |
SQR.Matrix2D | matrix to copy values to. Can be or {Float32Array} |
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getTranslation(v) → {SQR.V2}
Returns the translation value as 2d vector.
Parameters:
| Name | Type | Description |
|---|---|---|
v |
SQR.V2 | vector to use to return values in, if ommited a new vector object is returned |
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Returns:
2d vector with translation values
- Type
- SQR.V2
identity()
Resets the matrix to identity values.
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multiply(m)
Multiples current matrix by m and stores result in current matrix.
Parameters:
| Name | Type | Description |
|---|---|---|
m |
matrix to multiply the current matrix by |
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rotate(a)
Applies rotation to matrix
Parameters:
| Name | Type | Description |
|---|---|---|
a |
angle in radians |
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scale(sx, sy)
Applies scale to matrix
Parameters:
| Name | Type | Description |
|---|---|---|
sx |
x scale |
|
sy |
y scale |
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setRotation(a, m)
Sets the rotation value.
Parameters:
| Name | Type | Description |
|---|---|---|
a |
angle in radians |
|
m |
the matrix to set shear to, applies to |
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setScale(sx, sy, m)
Sets the scale values.
Parameters:
| Name | Type | Description |
|---|---|---|
sx |
x scale |
|
sy |
y scale |
|
m |
the matrix to set scale to, applies to |
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setShear(sx, sy, m)
Sets the scale values.
Parameters:
| Name | Type | Description |
|---|---|---|
sx |
x shear |
|
sy |
y shear |
|
m |
the matrix to set shear to, applies to |
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setTranslation(tx, ty, m)
Sets the translation values.
Parameters:
| Name | Type | Description |
|---|---|---|
tx |
x translation |
|
ty |
y translation |
|
m |
the matrix to set translation to, applies to this if ommited |
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setTRS(tx, ty, a, sx, sy)
Sets the translation/rotation/scale values at once.
Parameters:
| Name | Type | Description |
|---|---|---|
tx |
x translation |
|
ty |
y translation |
|
a |
angle in radians |
|
sx |
x scale |
|
sy |
y scale |
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shear(sx, sy)
Applies shear to matrix
Parameters:
| Name | Type | Description |
|---|---|---|
sx |
x shear |
|
sy |
y shear |
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transformVector(v)
Multiplies the vector by the matrix
Parameters:
| Name | Type | Description |
|---|---|---|
v |
vector to multiply |
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Returns:
the same vector as passed in the parameter, multiplied by this matrix
translate(tx, ty)
Applies translation to matrix
Parameters:
| Name | Type | Description |
|---|---|---|
tx |
x translation |
|
ty |
y translation |
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