mirror of https://github.com/PCSX2/pcsx2.git
128 lines
3.6 KiB
C++
128 lines
3.6 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/affinematrix2dbase.h
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// Purpose: Common interface for 2D transformation matrices.
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// Author: Catalin Raceanu
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// Created: 2011-04-06
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// Copyright: (c) wxWidgets team
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_AFFINEMATRIX2DBASE_H_
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#define _WX_AFFINEMATRIX2DBASE_H_
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#include "wx/defs.h"
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#if wxUSE_GEOMETRY
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#include "wx/geometry.h"
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struct wxMatrix2D
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{
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wxMatrix2D(wxDouble v11 = 1,
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wxDouble v12 = 0,
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wxDouble v21 = 0,
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wxDouble v22 = 1)
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{
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m_11 = v11; m_12 = v12;
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m_21 = v21; m_22 = v22;
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}
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wxDouble m_11, m_12, m_21, m_22;
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};
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// A 2x3 matrix representing an affine 2D transformation.
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//
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// This is an abstract base class implemented by wxAffineMatrix2D only so far,
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// but in the future we also plan to derive wxGraphicsMatrix from it (it should
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// also be documented then as currently only wxAffineMatrix2D itself is).
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class WXDLLIMPEXP_CORE wxAffineMatrix2DBase
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{
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public:
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wxAffineMatrix2DBase() {}
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virtual ~wxAffineMatrix2DBase() {}
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// sets the matrix to the respective values
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virtual void Set(const wxMatrix2D& mat2D, const wxPoint2DDouble& tr) = 0;
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// gets the component valuess of the matrix
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virtual void Get(wxMatrix2D* mat2D, wxPoint2DDouble* tr) const = 0;
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// concatenates the matrix
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virtual void Concat(const wxAffineMatrix2DBase& t) = 0;
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// makes this the inverse matrix
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virtual bool Invert() = 0;
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// return true if this is the identity matrix
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virtual bool IsIdentity() const = 0;
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// returns true if the elements of the transformation matrix are equal ?
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virtual bool IsEqual(const wxAffineMatrix2DBase& t) const = 0;
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bool operator==(const wxAffineMatrix2DBase& t) const { return IsEqual(t); }
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bool operator!=(const wxAffineMatrix2DBase& t) const { return !IsEqual(t); }
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//
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// transformations
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//
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// add the translation to this matrix
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virtual void Translate(wxDouble dx, wxDouble dy) = 0;
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// add the scale to this matrix
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virtual void Scale(wxDouble xScale, wxDouble yScale) = 0;
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// add the rotation to this matrix (counter clockwise, radians)
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virtual void Rotate(wxDouble ccRadians) = 0;
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// add mirroring to this matrix
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void Mirror(int direction = wxHORIZONTAL)
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{
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wxDouble x = (direction & wxHORIZONTAL) ? -1 : 1;
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wxDouble y = (direction & wxVERTICAL) ? -1 : 1;
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Scale(x, y);
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}
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// applies that matrix to the point
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wxPoint2DDouble TransformPoint(const wxPoint2DDouble& src) const
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{
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return DoTransformPoint(src);
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}
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void TransformPoint(wxDouble* x, wxDouble* y) const
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{
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wxCHECK_RET( x && y, "Can't be NULL" );
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const wxPoint2DDouble dst = DoTransformPoint(wxPoint2DDouble(*x, *y));
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*x = dst.m_x;
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*y = dst.m_y;
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}
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// applies the matrix except for translations
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wxPoint2DDouble TransformDistance(const wxPoint2DDouble& src) const
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{
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return DoTransformDistance(src);
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}
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void TransformDistance(wxDouble* dx, wxDouble* dy) const
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{
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wxCHECK_RET( dx && dy, "Can't be NULL" );
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const wxPoint2DDouble
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dst = DoTransformDistance(wxPoint2DDouble(*dx, *dy));
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*dx = dst.m_x;
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*dy = dst.m_y;
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}
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protected:
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virtual
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wxPoint2DDouble DoTransformPoint(const wxPoint2DDouble& p) const = 0;
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virtual
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wxPoint2DDouble DoTransformDistance(const wxPoint2DDouble& p) const = 0;
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};
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#endif // wxUSE_GEOMETRY
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#endif // _WX_AFFINEMATRIX2DBASE_H_
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