105 lines
3.5 KiB
C++
105 lines
3.5 KiB
C++
/**
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* @file transform.h
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*/
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/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2007-2010 Wayne Stambaugh <stambaughw@verizon.net>
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* Copyright (C) 2007-2017 KiCad Developers, see AUTHORS.txt for contributors.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#ifndef _TRANSFORM_H_
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#define _TRANSFORM_H_
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#include <wx/gdicmn.h>
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class EDA_RECT;
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/**
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* Class for tranforming drawing coordinates for a wxDC device context.
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*
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* This probably should be a base class with all pure methods and a derived class
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* named WXDC_TRANFORM be created. Then in the future if some new device context
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* is used, a new transform could be derived from the base class and all the drawable
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* objects would have to do is provide overloaded draw methods to use the new transorm.
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*/
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class TRANSFORM
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{
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public:
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int x1;
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int y1;
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int x2;
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int y2;
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/**
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* The default construct creates a tranform that draws object is the normal orientation.
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*/
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TRANSFORM() : x1( 1 ), y1( 0 ), x2( 0 ), y2( -1 ) {}
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TRANSFORM( int ax1, int ay1, int ax2, int ay2 ) : x1( ax1 ), y1( ay1 ), x2( ax2 ), y2( ay2 ) {}
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bool operator==( const TRANSFORM& aTransform ) const;
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bool operator!=( const TRANSFORM& aTransform ) const { return !( *this == aTransform ); }
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/**
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* Calculate a new coordinate according to the mirror/rotation transform.
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* Useful to calculate actual coordinates of a point
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* from coordinates relative to a component
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* which are given for a non rotated, non mirrored item
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* @param aPoint = The position to transform
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* @return The transformed coordinate.
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*/
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wxPoint TransformCoordinate( const wxPoint& aPoint ) const;
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/**
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* Calculate a new rect according to the mirror/rotation transform.
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* Useful to calculate actual coordinates of a point
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* from coordinates relative to a component
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* which are given for a non rotated, non mirrored item
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* @param aRect = The rectangle to transform
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* @return The transformed rectangle.
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*/
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EDA_RECT TransformCoordinate( const EDA_RECT& aRect ) const;
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/**
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* Calculate the Inverse mirror/rotation transform.
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* Useful to calculate coordinates relative to a component
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* which must be for a non rotated, non mirrored item
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* from the actual coordinate.
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* @return The inverse transform.
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*/
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TRANSFORM InverseTransform( ) const;
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/**
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* Calculate new angles according to the transform.
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*
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* @param aAngle1 = The first angle to transform
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* @param aAngle2 = The second angle to transform
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* @return True if the angles were swapped during the transform.
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*/
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bool MapAngles( int* aAngle1, int* aAngle2 ) const;
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};
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#endif // _TRANSFORM_H_
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