4f4c5fcfdf
This is a combination of running clang-tidy with modernize-use-nullptr check for some ports (GTK, X11, OSX) and manual changes to the ports for which it couldn't be used easily (MSW, DFB) and also manually updating the docs. Also replace NULL with null or nullptr in the comments as this is more consistent with the use of nullptr in the code and makes it simpler to grep for the remaining occurrences of NULL itself. And also use null in the assert messages. Only a few occurrences of "NULL" are still left in non-C files, mostly corresponding to unclear comments or string output which it might not be safe to change.
127 lines
3.6 KiB
C++
127 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 values 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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