wx.AffineMatrix2DBase

A 2x3 matrix representing an affine 2D transformation.

This is an abstract base class implemented by wx.AffineMatrix2D only so far, but in the future we also plan to derive wx.GraphicsMatrix from it.

New in version 2.9.2.

Class Hierarchy

Inheritance diagram for class AffineMatrix2DBase:

Known Subclasses

wx.AffineMatrix2D

Methods Summary

__init__	Default constructor.
Concat	Concatenate this matrix with another one.
Get	Get the component values of the matrix.
Invert	Invert this matrix.
IsEqual	Check that this matrix is identical with t.
IsIdentity	Check if this is the identity matrix.
Mirror	Add mirroring to this matrix.
Rotate	Add clockwise rotation to this matrix.
Scale	Add scaling to this matrix.
Set	Set all elements of this matrix.
TransformDistance	Applies the linear part of this matrix, i.e. without translation.
TransformPoint	Applies this matrix to the point.
Translate	Add the translation to this matrix.
__ne__	Check that this matrix differs from t.
__eq__	Check that this matrix is identical with t.

Class API

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class wx.AffineMatrix2DBase(object)

Possible constructors:

AffineMatrix2DBase()

A 2x3 matrix representing an affine 2D transformation.

Methods

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__init__(self)

Default constructor.

The matrix elements are initialize to the identity matrix.

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Concat(self, t)

Concatenate this matrix with another one.

The parameter matrix is the multiplicand.

Parameters:t (wx.AffineMatrix2DBase) – The multiplicand.

#           | t.m_11  t.m_12  0 |   | m_11  m_12   0 |
# matrix' = | t.m_21  t.m_22  0 | x | m_21  m_22   0 |
#           | t.m_tx  t.m_ty  1 |   | m_tx  m_ty   1 |

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Get(self)

Get the component values of the matrix.

Return type:tuple Returns:( mat2D, tr )

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Invert(self)

Invert this matrix.

If the matrix is not invertible, i.e. if its determinant is 0, returns False and doesn’t modify it.

#           | m_11  m_12  0 |
# Invert    | m_21  m_22  0 |
#           | m_tx  m_ty  1 |

Return type:bool

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IsEqual(self, t)

Check that this matrix is identical with t.

Parameters:t (wx.AffineMatrix2DBase) – The matrix compared with this. Return type:bool

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IsIdentity(self)

Check if this is the identity matrix.

Return type:bool

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Mirror(self, direction=HORIZONTAL)

Add mirroring to this matrix.

Parameters:direction (int) – The direction(s) used for mirroring. One of wx.HORIZONTAL, wx.VERTICAL or their combination wx.BOTH.

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Rotate(self, cRadians)

Add clockwise rotation to this matrix.

Parameters:cRadians (wx.Double) – Rotation angle in radians, clockwise.

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Scale(self, xScale, yScale)

Add scaling to this matrix.

Parameters:

• xScale (wx.Double) – Scaling in x direction.
• yScale (wx.Double) – Scaling in y direction.

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Set(self, mat2D, tr)

Set all elements of this matrix.

Parameters:

• mat2D (wx.Matrix2D) – The rotational components of the matrix (upper 2 x 2).
• tr (Point2DDouble) – The translational components of the matrix.

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TransformDistance(self, *args, **kw)

Overloaded Implementations:

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TransformDistance (self, p)

Applies the linear part of this matrix, i.e. without translation.

Parameters:p (Point2DDouble) – The source receiving the transformations. Return type:Point2DDouble Returns:The source with the transformations applied.

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TransformDistance (self, dx, dy)

Parameters:

• dx (wx.Double) –
• dy (wx.Double) –

Return type:

tuple

Returns:

( dx, dy )

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TransformPoint(self, *args, **kw)

Overloaded Implementations:

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TransformPoint (self, p)

Applies this matrix to the point.

Parameters:p (Point2DDouble) – The point receiving the transformations. Return type:Point2DDouble Returns:The point with the transformations applied.

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TransformPoint (self, x, y)

Parameters:

• x (wx.Double) –
• y (wx.Double) –

Return type:

tuple

Returns:

( x, y )

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Translate(self, dx, dy)

Add the translation to this matrix.

Parameters:

• dx (wx.Double) – The translation in x direction.
• dy (wx.Double) – The translation in y direction.

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__ne__(self)

Check that this matrix differs from t.

Parameters:t (wx.AffineMatrix2DBase) – The matrix compared with this.

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__eq__(self)

Check that this matrix is identical with t.

Parameters:t (wx.AffineMatrix2DBase) – The matrix compared with this.